{"id":1591,"date":"2018-05-03T11:23:29","date_gmt":"2018-05-03T04:23:29","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=1591"},"modified":"2023-11-23T12:25:30","modified_gmt":"2023-11-23T05:25:30","slug":"vietnam-journal-of-forest-science-number-4-2017","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2018\/05\/vietnam-journal-of-forest-science-number-4-2017\/","title":{"rendered":"Vietnam Journal of Forest Science Number 4-2017"},"content":{"rendered":"

\"Bia<\/a><\/p>\n

\n

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 <\/b>4<\/b> – 201<\/b>7<\/b><\/p>\n

\u00a0<\/b><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1<\/td>\n\n

\u0110a d\u1ea1ng h\u1ecd H\u1ed3 ti\u00eau (Piperaceae) \u1edf V\u01b0\u1eddn Qu\u1ed1c gia B\u1ebfn En, Thanh H\u00f3a<\/p>\n<\/td>\n

\n

\u0110\u1eadu B\u00e1 Th\u00ecn
\nNghi\u00eam Th\u1ecb Giang
\nHo\u00e0ng V\u0103n Ch\u00ednh<\/p>\n<\/td>\n

\n

Diversity plants of Piperaceae from Ben En National Park, Thanh Hoa province<\/p>\n<\/td>\n

\n

5<\/p>\n<\/td>\n<\/tr>\n

2<\/td>\n\n

\u0110a d\u1ea1ng c\u00e2y thu\u1ed1c \u1edf x\u00e3 M\u01b0\u1eddng L\u1ed1ng huy\u1ec7n K\u1ef3 S\u01a1n, t\u1ec9nh Ngh\u1ec7 An<\/p>\n<\/td>\n

\n

L\u00ea Th\u1ecb H\u01b0\u01a1ng
\nHo\u00e0ng Thanh S\u01a1n
\nNguy\u1ec5n Ti\u1ebfn C\u01b0\u1eddng
\n\u0110\u1eadu B\u00e1 Th\u00ecn
\nNguy\u1ec5n Xu\u00e2n Tr\u01b0\u1eddng<\/p>\n<\/td>\n

\n

Diversity of medicinal plants in Muong Long commune, Ky Son district, Nghe An province<\/p>\n<\/td>\n

\n

10<\/p>\n<\/td>\n<\/tr>\n

3<\/td>\n\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a ho\u1ea1t \u0111\u1ed9ng du l\u1ecbch sinh th\u00e1i \u0111\u1ebfn \u0111\u1ed9ng v\u1eadt hoang d\u00e3 trong c\u00e1c khu b\u1ea3o t\u1ed3n<\/p>\n<\/td>\n

\n

Nguy\u1ec5n \u0110\u1eafc M\u1ea1nh
\nT\u1ea1 Tuy\u1ebft Nga
\nNguy\u1ec5n H\u1ea3i H\u00e0
\nL\u01b0u Quang Vinh
\nPh\u00f9ng Th\u1ecb Tuy\u1ebfn
\nNguy\u1ec5n Th\u1ecb B\u00edch H\u1ea3o
\nTr\u1ea7n Th\u1ecb H\u01b0\u01a1ng<\/p>\n<\/td>\n

\n

Impacts of ecotourism activities on wildlife in conservation areas<\/p>\n<\/td>\n

\n

16<\/p>\n<\/td>\n<\/tr>\n

4<\/td>\n\n

T\u1ed5ng quan nghi\u00ean c\u1ee9u c\u00e2y S\u00e2m ng\u1ecdc linh (Panax vietnamensis<\/i> Ha et Grush.) \u0111i\u1ec1u ki\u1ec7n in vitro<\/p>\n<\/td>\n

\n

L\u01b0\u01a1ng Th\u1ecb Hoan
\nPhan Th\u1ecb H\u01b0\u01a1ng Tr\u00e0
\nHo\u00e0ng Th\u1ecb Nh\u01b0 N\u1ee5
\nL\u00ea Vi\u1ec7t D\u0169ng
\nD\u01b0\u01a1ng Th\u1ecb Ph\u00fac H\u1eadu
\nNguy\u1ec5n \u0110\u0103ng Minh Ch\u00e1nh<\/p>\n<\/td>\n

\n

Research overview of panax Vietnamensis (Pnax vietnamensis<\/i> Ha et Grush.) invitro condition<\/p>\n<\/td>\n

\n

26<\/p>\n<\/td>\n<\/tr>\n

5<\/td>\n\n

Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a lo\u00e0i Xoan \u0111\u00e0o (Prunus arborea<\/i> (Blume) Kalkman) t\u1ea1i huy\u1ec7n Na R\u00ec, t\u1ec9nh B\u1eafc K\u1ea1n<\/p>\n<\/td>\n

\n

\u0110\u1ed7 Ho\u00e0ng Chung
\nNguy\u1ec5n C\u00f4ng Hoan
\nMa \u0110\u1ee9c Khi\u00eam<\/p>\n<\/td>\n

\n

Study on silvic characteristics of Prunus arborea<\/i> (Blume) Kalkman species in Na Ri district, Bac Kan province<\/p>\n<\/td>\n

\n

38<\/p>\n<\/td>\n<\/tr>\n

6<\/td>\n\n

M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a lo\u00e0i Xoan m\u1ed9c (Toona surenii<\/i> Blume Merr) t\u1ea1i khu B\u1ea3o t\u1ed3n lo\u00e0i v\u00e0 sinh c\u1ea3nh Nam Xu\u00e2n L\u1ea1c – B\u1eafc K\u1ea1n<\/p>\n<\/td>\n

\n

H\u1ed3 Ng\u1ecdc S\u01a1n<\/p>\n

Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n<\/p>\n

L\u01b0\u1eddng Qu\u1ed1c H\u1ea3i<\/p>\n<\/td>\n

\n

Some biological characteristics of Toona surenii<\/i> Blume Merr in Nam Xuan Lac species & habibat conservation area, Bac Kan province<\/p>\n<\/td>\n

\n

47<\/p>\n<\/td>\n<\/tr>\n

7<\/td>\n\n

\u0110\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng c\u1ee7a B\u1eddi l\u1eddi \u0111\u1ecf (Machilus odoratissima<\/i> Nees) \u1edf t\u1ec9nh Gia Lai, \u0110\u1eafk L\u1eafk
\nv\u00e0 Kon Tum<\/p>\n<\/td>\n

\n

\u0110\u1eb7ng Th\u00e1i Ho\u00e0ng
\n\u0110\u1eb7ng Th\u00e1i D\u01b0\u01a1ng<\/p>\n<\/td>\n

\n

The growth characteristics of Machilus odoratissima<\/i> Nees in Gia Lai, Dak Lak, and Kon Tum provinces<\/p>\n<\/td>\n

\n

54<\/p>\n<\/td>\n<\/tr>\n

8<\/td>\n\n

M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac r\u1eebng t\u1ef1 nhi\u00ean n\u01a1i c\u00f3 lo\u00e0i D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p (Amentotaxus argotaenia<\/i> (Hance) Pilger) ph\u00e2n b\u1ed1
\nt\u1ea1i huy\u1ec7n M\u1ed9c Ch\u00e2u,
\nt\u1ec9nh S\u01a1n La<\/p>\n<\/td>\n

\n

Phan Th\u1ecb Thanh Huy\u1ec1n
\nNguy\u1ec5n V\u0103n H\u00f9ng<\/p>\n<\/td>\n

\n

Some characteristics of natural forest structure wich have Amentotaxus argotaenia<\/i> (Hance) Pilger in Moc Chau district,
\nSon La province<\/p>\n<\/td>\n

\n

64<\/p>\n<\/td>\n<\/tr>\n

9<\/td>\n\n

\u0110\u1eb7c \u0111i\u1ec3m t\u00e1i sinh r\u1eebng
\nt\u1ef1 nhi\u00ean n\u01a1i c\u00f3 lo\u00e0i c\u00e2y
\nD\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p (Amentotaxus argotaenia<\/i> (Hance) Pilger) ph\u00e2n b\u1ed1
\nt\u1ea1i huy\u1ec7n M\u1ed9c Ch\u00e2u,
\nt\u1ec9nh S\u01a1n La<\/p>\n<\/td>\n

\n

Phan Th\u1ecb Thanh Huy\u1ec1n
\nNguy\u1ec5n V\u0103n H\u00f9ng<\/p>\n<\/td>\n

\n

The traits of natural regeneration of Amentotaxus argotaenia<\/i> (Hance) Pilger) forest in Moc Chau district, Son La province<\/p>\n<\/td>\n

\n

74<\/p>\n<\/td>\n<\/tr>\n

10<\/td>\n\n

\u0110\u1eb7c tr\u01b0ng c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng ph\u00f2ng h\u1ed9 \u0111\u1ea7u ngu\u1ed3n l\u01b0u v\u1ef1c s\u00f4ng P\u00f4 K\u00f4,
\nt\u1ec9nh Kon Tum<\/p>\n<\/td>\n

\n

Hu\u1ef3nh V\u0103n Chung<\/p>\n<\/td>\n

\n

The characteristics of watershed protection forests in the Po Ko river basin in Kon Tum province<\/p>\n<\/td>\n

\n

83<\/p>\n<\/td>\n<\/tr>\n

11<\/td>\n\n

\u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 ph\u00f2ng tr\u1eeb lo\u00e0i s\u00e2u (Orthaga exvinacea<\/i> Hamp.) H\u1ea1i l\u00e1 Long n\u00e3o (Cinnamomum camphora<\/i> Linnaeus) t\u1ea1i huy\u1ec7n
\nGia B\u00ecnh, t\u1ec9nh B\u1eafc Ninh<\/p>\n<\/td>\n

\n

L\u00ea V\u0103n B\u00ecnh
\nNguy\u1ec5n Qu\u1ed1c Th\u1ed1ng<\/p>\n<\/td>\n

\n

Biological characteristic and control measure of Orthaga exvinacea<\/i> Hamp. damaging leaf of Cinnamomum camphora<\/i> Linnaeus in Gia Binh district, Bac Ninh province<\/p>\n<\/td>\n

\n

95<\/p>\n<\/td>\n<\/tr>\n

12<\/td>\n\n

\u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 th\u00e0nh ph\u1ea7n thi\u00ean \u0111\u1ecbch
\nc\u1ee7a S\u00e2u \u0111o \u0103n l\u00e1 (Biston suppressaria<\/i> Guen\u00e9e) h\u1ea1i Keo tai t\u01b0\u1ee3ng
\n(Acacia mangium<\/i>)
\nt\u1ea1i Qu\u1ea3ng Ninh<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Ho\u00e0i Thu
\n\u0110\u00e0o Ng\u1ecdc Quang
\nB\u00f9i Quang Ti\u1ebfp<\/p>\n<\/td>\n

\n

Biological characteristics and natural enemies of Looper caterpillar
\n(Biston suppressaria<\/i> Guen\u00e9e) associated with Acacia mangium<\/i> in
\nQuang Ninh province<\/p>\n<\/td>\n

\n

101<\/p>\n<\/td>\n<\/tr>\n

13<\/td>\n\n

B\u1ec7nh th\u1ed1i r\u1ec5 Qu\u1ebf \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m\u00a0 v\u00e0 \u0111\u1ec1 xu\u1ea5t bi\u1ec7n ph\u00e1p qu\u1ea3n l\u00fd d\u1ecbch b\u1ec7nh\u00a0 \u1edf t\u1ec9nh L\u00e0o Cai<\/p>\n<\/td>\n

\n

V\u0169 V\u0103n \u0110\u1ecbnh
\n\u0110\u1eb7ng Nh\u01b0 Qu\u1ef3nh
\nL\u00ea Th\u1ecb Xu\u00e2n
\nNguy\u1ec5n Th\u1ecb Loan
\nPh\u1ea1m V\u0103n Nh\u1eadt
\nv\u00e0 Tr\u1ea7n Nh\u1eadt T\u00e2n<\/p>\n<\/td>\n

\n

Wilt disease of Cinnamomum cassia<\/i> in nurseries and control measures for diseases management in Lao Cai province<\/p>\n<\/td>\n

\n

109<\/p>\n<\/td>\n<\/tr>\n

14<\/td>\n\n

\u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i v\u00e0 ph\u00e2n t\u00edch tr\u00ecnh t\u1ef1 gen 28s-rRNA c\u1ee7a lo\u00e0i n\u1ea5m li\u00ean quan \u0111\u1ebfn b\u1ec7nh th\u1ed1i qu\u1ea3 v\u1ea3i t\u1ea1i L\u1ee5c Ng\u1ea1n – B\u1eafc Giang<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n
\nTr\u1ecbnh \u0110\u00ecnh Kh\u00e1<\/p>\n<\/td>\n

\n

Morphological characteristics and sequence analysis of 8s – rRNA gene of fungal species associated with the rot disease of litchi fruit in Luc Ngan – Bac Giang<\/p>\n<\/td>\n

\n

119<\/p>\n<\/td>\n<\/tr>\n

15<\/td>\n\n

K\u1ebft h\u1ee3p \u1ea3nh v\u1ec7 tinh Alos-2\/Palsar-2 v\u00e0 Landsat-8 trong x\u00e1c \u0111\u1ecbnh tr\u1eef l\u01b0\u1ee3ng r\u1eebng t\u1ef1 nhi\u00ean l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh t\u1ea1i t\u1ec9nh
\n\u0110\u1eafk N\u00f4ng<\/p>\n<\/td>\n

\n

Ph\u1ea1m V\u0103n Du\u1ea9n
\nNguy\u1ec5n Thanh Ho\u00e0n
\nNguy\u1ec5n Tr\u1ecdng B\u00ecnh
\nPh\u1ea1m Ti\u1ebfn D\u0169ng<\/p>\n<\/td>\n

\n

A combination of
\nAlos-\/Palsar- and Landsat-8 satellite images for wood volume estimation of natural evergreen broadleaf forest in Dak Nong province<\/p>\n<\/td>\n

\n

125<\/p>\n<\/td>\n<\/tr>\n

16<\/td>\n\n

Th\u1ef1c tr\u1ea1ng v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd ch\u00e1y r\u1eebng \u1ee9ng ph\u00f3 v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu t\u1ea1i t\u1ec9nh Qu\u1ea3ng B\u00ecnh<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Ph\u01b0\u01a1ng V\u0103n
\nNguy\u1ec5n V\u0103n L\u1ee3i
\nTr\u1ea7n Minh \u0110\u1ee9c<\/p>\n<\/td>\n

\n

Situation and measures to forest fire management for climate change adaptation in Quang Binh province<\/p>\n<\/td>\n

\n

139<\/p>\n<\/td>\n<\/tr>\n

17<\/td>\n\n

Kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 m\u00e0u s\u1eafc g\u1ed7 c\u1ee7a s\u01a1n pu ch\u1ee9a v\u1eadt li\u1ec7u nano TiO2<\/sub>, ZnO v\u00e0 nanoclay hydrophilic<\/p>\n<\/td>\n

\n

B\u00f9i V\u0103n \u00c1i
\nNguy\u1ec5n Th\u1ecb H\u1eb1ng
\nHo\u00e0ng Trung Hi\u1ebfu
\nHo\u00e0ng Th\u1ecb T\u00e1m
\nB\u00f9i Th\u1ecb Th\u1ee7y<\/p>\n<\/td>\n

\n

Color protection capability of PU paint enhanced with dispersed nano particles of TiO, SiO, ZnO, Nanoclay hydrophilic<\/p>\n<\/td>\n

\n

151<\/p>\n<\/td>\n<\/tr>\n

18<\/td>\n\n

X\u1eed l\u00fd t\u1ea9y tr\u1eafng v\u00e1n b\u00f3c g\u1ed7 Keo tai t\u01b0\u1ee3ng v\u00e0 keo lai<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Quang Trung
\nNguy\u1ec5n th\u1ecb Ph\u01b0\u1ee3ng
\nH\u00e0 Ti\u1ebfn M\u1ea1nh
\nPh\u1ea1m Th\u1ecb Thanh Mi\u1ec1n<\/p>\n<\/td>\n

\n

Bleaching peeled veneer of acacia wood<\/p>\n<\/td>\n

\n

160<\/p>\n<\/td>\n<\/tr>\n

19<\/td>\n\n

M\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u s\u1ea5y g\u1ed7 C\u00e1ng l\u00f2 (Betula alnoides<\/i> Buch. Ham)<\/p>\n<\/td>\n

\n

\u0110\u1ed7 Th\u1ecb Ho\u00e0i Thanh
\nH\u00e0 Ti\u1ebfn M\u1ea1nh<\/p>\n<\/td>\n

\n

Study on drying technology of Betula alnoides<\/i> Buch. Ham<\/p>\n<\/td>\n

\n

169<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110A D\u1ea0NG H\u1ecc H\u1ed2 TI\u00caU (PIPERACEAE) \u1ede V\u01af\u1edcN QU\u1ed0C GIA\u00a0 B\u1ebeN EN, THANH H\u00d3A<\/p>\n

\u0110\u1eadu B\u00e1 Th\u00ecn1<\/sup>, Nghi\u00eam Th\u1ecb Giang1<\/sup>, Ho\u00e0ng V\u0103n Ch\u00ednh1,2<\/sup><\/p>\n

1 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc H\u1ed3ng \u0110\u1ee9c
\n2 <\/sup>H\u1ecdc vi\u1ec7n Khoa h\u1ecdc Vi\u1ec7t Nam<\/p>\n<\/div>\n\n\n\n\n
\n

T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u h\u1ecd H\u1ed3 ti\u00eau (Piperaceae) \u1edf V\u01b0\u1eddn qu\u1ed1c gia (VQG) B\u1ebfn En, Thanh H\u00f3a, m\u1eabu \u0111\u01b0\u1ee3c thu t\u1eeb n\u0103m 2016 \u0111\u1ebfn n\u0103m 2017. B\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 18 lo\u00e0i, 2 chi, trong \u0111\u00f3 b\u1ed5 sung cho danh l\u1ee5c VQG B\u1ebfn En (2013) \u0111\u01b0\u1ee3c 09 lo\u00e0i. Chi Piper<\/i> c\u00f3 s\u1ed1 lo\u00e0i nhi\u1ec1u nh\u1ea5t v\u1edbi 17 lo\u00e0i (chi\u1ebfm 84,44% t\u1ed5ng s\u1ed1 lo\u00e0i), Peperomia <\/i>ch\u1ec9 c\u00f3 1 lo\u00e0i (chi\u1ebfm 5,56%). C\u00e1c lo\u00e0i c\u00e2y thu\u1ed9c h\u1ecd H\u1ed3 ti\u00eau (Piperaceae) \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u c\u00f3 c\u00e1c gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng kh\u00e1c nhau nh\u01b0 c\u00f3 17 lo\u00e0i thu\u1ed9c nh\u00f3m c\u00e2y c\u00f3 tinh d\u1ea7u, 09 lo\u00e0i thu\u1ed9c nh\u00f3m c\u00e2y l\u00e0m thu\u1ed1c, 03 lo\u00e0i \u0103n \u0111\u01b0\u1ee3c v\u00e0 02 lo\u00e0i thu\u1ed9c nh\u00f3m c\u00e2y l\u00e0m gia v\u1ecb. L\u1ea7n \u0111\u1ea7u ghi nh\u1eadn b\u1ed5 sung 12 lo\u00e0i thu\u1ed9c h\u1ecd H\u1ed3 ti\u00eau c\u00f3 m\u1eb7t \u1edf Thanh H\u00f3a.<\/p>\n

T\u1eeb kh\u00f3a: <\/i><\/b>B\u1ebfn En, \u0111a d\u1ea1ng, h\u1ecd H\u1ed3 ti\u00eau, Thanh H\u00f3a, V\u01b0\u1eddn qu\u1ed1c gia.<\/b><\/td>\n<\/tr>\n

Diversity plants of Piperaceae from Ben En National Park, Thanh Hoa province<\/strong><\/p>\n

This paper presents some results of research on family Piperaceae in Ben En National Park, Thanh Hoa province, from 2016 to 2017. Total 18 species belonging to 2 genera of Piperaceae were collected and identified. There were 9 species found as new records for the plant list of Ben En published in 2013. Piper <\/i>was the richest genus (17 species), then followed by Peperomia <\/i>(1 species), The number of useful plant species of the Lauraceae is categorized as follows: 17 species supply essential oil, 9 species as medicinal plants, 03 species for edible and 02 species for spice. The first, recorded new distribution for 12 species in Thanh Hoa.<\/p>\n

Key words: <\/i><\/b>Ben En, biodiversity, National park, Piperaceae, Thanh Hoa.<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

A D\u1ea0NG C\u00c2Y THU\u1ed0C \u1ede X\u00c3 M\u01af\u1edcNG L\u1ed0NG HUY\u1ec6N K\u1ef2 S\u01a0N, T\u1ec8NH NGH\u1ec6 AN<\/p>\n

L\u00ea Th\u1ecb H\u01b0\u01a1ng1,*<\/sup>, Ho\u00e0ng Thanh S\u01a1n2<\/sup>, Nguy\u1ec5n Ti\u1ebfn C\u01b0\u1eddng1<\/sup>,<\/p>\n

\u0110\u1eadu B\u00e1 Th\u00ecn3<\/sup>, Nguy\u1ec5n Xu\u00e2n Tr\u01b0\u1eddng4<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n S\u01b0 ph\u1ea1m T\u1ef1 nhi\u00ean, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Vinh<\/p>\n

2<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m Sinh
\n3<\/sup>Khoa Khoa h\u1ecdc T\u1ef1 nhi\u00ean, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc H\u1ed3ng \u0110\u1ee9c
\n4<\/sup>BQL R\u1eebng ph\u00f2ng h\u1ed9 K\u1ef3 S\u01a1n<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u00e2y thu\u1ed1c \u1edf x\u00e3 M\u01b0\u1eddng L\u1ed1ng huy\u1ec7n K\u1ef3 S\u01a1n, b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 91 h\u1ecd, 185 chi v\u00e0 231 thu\u1ed9c 4 ng\u00e0nh th\u1ef1c v\u1eadt b\u1eadc cao c\u00f3 m\u1ea1ch (Equisetophyta, Polypodiophyta, Pinophyta v\u00e0 Magnoliophyta). Trong \u0111\u00f3, ng\u00e0nh Magnoliophyta l\u00e0 \u0111a d\u1ea1ng nh\u1ea5t v\u1edbi v\u1edbi 217 lo\u00e0i thu\u1ed9c 175 chi v\u00e0 81 h\u1ecd. Nh\u00f3m c\u00e2y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t l\u00e0 c\u00e2y th\u00e2n th\u1ea3o v\u1edbi 76 lo\u00e0i, ti\u1ebfp \u0111\u1ebfn l\u00e0 c\u00e2y th\u00e2n b\u1ee5i v\u1edbi 70 lo\u00e0i, c\u00e2y th\u00e2n g\u1ed7 v\u1edbi 47 lo\u00e0i, th\u1ea5p nh\u1ea5t c\u00e2y th\u00e2n leo v\u1edbi 38 lo\u00e0i. M\u00f4i tr\u01b0\u1eddng s\u1ed1ng \u1edf r\u1eebng v\u1edbi 123 lo\u00e0i, n\u01b0\u01a1ng r\u1eaby v\u1edbi 91 lo\u00e0i, khe su\u1ed1i v\u1edbi 54 lo\u00e0i, \u0111\u1ed3i v\u1edbi 35 lo\u00e0i, v\u01b0\u1eddn nh\u00e0 v\u1edbi 30 lo\u00e0i. \u0110\u00e3 \u0111i\u1ec1u tra \u0111\u01b0\u1ee3c 15 nh\u00f3m c\u00e2y thu\u1ed1c d\u00f9ng \u0111\u1ec3 ch\u1eefa b\u1ec7nh, trong \u0111\u00f3 b\u1ec7nh th\u1eddi ti\u1ebft l\u00e0 cao nh\u1ea5t v\u1edbi 78 lo\u00e0i, b\u1ec7nh x\u01b0\u01a1ng kh\u1edbp v\u1edbi 71 lo\u00e0i, b\u1ec7nh ngo\u00e0i da v\u1edbi 56 lo\u00e0i, b\u1ec7nh ti\u00eau h\u00f3a v\u1edbi 63 lo\u00e0i, \u0111\u1ed9ng v\u1eadt c\u1eafn 30 lo\u00e0i, b\u1ec7nh ph\u1ee5 n\u1eef 21 lo\u00e0i, h\u00f4 h\u1ea5p 18 lo\u00e0i, b\u1ec7nh d\u1ea1 d\u00e0y 12 v\u00e0 c\u00e1c b\u1ec7nh kh\u00e1c 35. C\u00f3 15 lo\u00e0i c\u00e2y thu\u1ed1c \u1edf x\u00e3 M\u01b0\u1eddng L\u1ed1ng c\u00f3 nguy c\u01a1 b\u1ecb tuy\u1ec7t ch\u1ee7ng \u0111\u01b0\u1ee3c ghi trong S\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam (2007), 2 lo\u00e0i r\u1ea5t nguy c\u1ea5p (CR), 5 lo\u00e0i nguy c\u1ea5p (EN), 8 lo\u00e0i s\u1ebd nguy c\u1ea5p (VU).<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>C\u00e2y thu\u1ed1c, \u0111a d\u1ea1ng, M\u01b0\u1eddng L\u1ed1ng, Ngh\u1ec7 An<\/td>\n<\/tr>\n

Diversity of medicinal plants in Muong Long commune, Ky Son district, Nghe An province<\/strong><\/p>\n

Research results of medicinal plants in Muong Long commune, Ky Son district, have been identified 231 species belonging to 185 genera and 91 families of 4 divisions (Equisetophyta, Polypodiophyta, Pinophyta and Magnoliophyta). Magnoliophyta was found the richest with 217 pecies (93.93%). Highest number of species were herbs with 76 species (32,90%), followed by Shrubs (70 species), trees (47 species). The vines were the lowes with 38 species. Medecinal plants of Muong Long were identified which are able to cure 9 diseases groups. Among these, 4 groups used with the largest number of species: fever and lung diseases (78 species), related to the mesculoskeletal system diseases (71 species), diseases of the digestive system (63 species), skin diseases (56 species). There are 15 species are listed in the Red data Book of Vietnamese (2007).<\/p>\n

Keywords: <\/i><\/b>Diversity, medicinal, Muong Long, Nghe An<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u1ea2NH H\u01af\u1edeNG C\u1ee6A HO\u1ea0T \u0110\u1ed8NG DU L\u1ecaCH SINH TH\u00c1I \u0110\u1ebeN \u0110\u1ed8NG V\u1eacT HOANG D\u00c3 TRONG C\u00c1C KHU B\u1ea2O T\u1ed2N<\/p>\n

Nguy\u1ec5n \u0110\u1eafc M\u1ea1nh, T\u1ea1 Tuy\u1ebft Nga, Nguy\u1ec5n H\u1ea3i H\u00e0, L\u01b0u Quang Vinh, Ph\u00f9ng Th\u1ecb Tuy\u1ebfn, Nguy\u1ec5n Th\u1ecb B\u00edch H\u1ea3o, Tr\u1ea7n Th\u1ecb H\u01b0\u01a1ng<\/p>\n

Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Hi\u1ec7n nay, c\u00f3 kh\u00e1 nhi\u1ec1u V\u01b0\u1eddn qu\u1ed1c gia, khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean \u1edf Vi\u1ec7t Nam \u0111\u00e3 t\u1ed5 ch\u1ee9c ho\u1ea1t \u0111\u1ed9ng du l\u1ecbch sinh th\u00e1i, tuy nhi\u00ean ch\u01b0a c\u00f3 nhi\u1ec1u nghi\u00ean c\u1ee9u v\u1ec1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a ho\u1ea1t \u0111\u1ed9ng du l\u1ecbch sinh th\u00e1i \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng v\u1eadt hoang d\u00e3. B\u1edfi v\u1eady, tr\u00ean c\u01a1 s\u1edf t\u00f3m l\u01b0\u1ee3c c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 l\u0129nh v\u1ef1c n\u00e0y \u1edf ngo\u00e0i n\u01b0\u1edbc v\u00e0 so s\u00e1nh v\u1edbi hi\u1ec7n tr\u1ea1ng nghi\u00ean c\u1ee9u \u1edf n\u01b0\u1edbc ta; ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t \u0111\u1ecbnh h\u01b0\u1edbng nghi\u00ean c\u1ee9u, c\u0169ng nh\u01b0 ph\u01b0\u01a1ng th\u1ee9c gi\u00e1m s\u00e1t v\u00e0 qu\u1ea3n l\u00fd. Ho\u1ea1t \u0111\u1ed9ng du l\u1ecbch sinh th\u00e1i di\u1ec5n ra trong khu b\u1ea3o t\u1ed3n ch\u1ee7 y\u1ebfu bao g\u1ed3m: xem \u0111\u1ed9ng v\u1eadt hoang d\u00e3, \u0111i b\u1ed9, ch\u1ee5p \u1ea3nh, c\u1eafm tr\u1ea1i, leo n\u00fai ho\u1eb7c tr\u01b0\u1ee3t tuy\u1ebft, ch\u00e8o thuy\u1ec1n tr\u00ean h\u1ed3, ch\u00e8o m\u1ea3ng xu\u00f4i d\u00f2ng su\u1ed1i, gi\u00e1o d\u1ee5c m\u00f4i tr\u01b0\u1eddng, th\u0103m b\u1ea3n l\u00e0ng,… Lo\u1ea1i h\u00ecnh ho\u1ea1t \u0111\u1ed9ng, ph\u1ea1m vi – c\u01b0\u1eddng \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng, ph\u00e2n b\u1ed1 kh\u00f4ng gian – th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng l\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 g\u00e2y nhi\u1ec5u \u0111\u1ed1i v\u1edbi \u0111\u1ed9ng v\u1eadt hoang d\u00e3. Th\u00e1o ch\u1ea1y, b\u1ecb thu h\u00fat v\u00e0 ph\u1ea3i th\u00edch nghi l\u00e0 ba ki\u1ec3u h\u00e0nh vi m\u00e0 \u0111\u1ed9ng v\u1eadt hoang d\u00e3 h\u1ecdc t\u1eadp \u0111\u01b0\u1ee3c \u0111\u1ec3 ph\u1ea3n \u1ee9ng \u0111\u1ed1i v\u1edbi c\u00e1c nhi\u1ec5u lo\u1ea1n t\u1eeb ho\u1ea1t \u0111\u1ed9ng du l\u1ecbch. Tr\u00ean th\u1ebf gi\u1edbi, c\u00f3 kh\u00e1 nhi\u1ec1u nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a ho\u1ea1t \u0111\u1ed9ng du l\u1ecbch sinh th\u00e1i \u0111\u1ebfn \u0111\u1ed9ng v\u1eadt hoang d\u00e3, ch\u1ee7 y\u1ebfu t\u1eadp trung v\u00e0o c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0: ph\u1ea3n \u1ee9ng kinh \u0111\u1ed9ng, ki\u1ebfm \u0103n, ti\u00eau hao n\u0103ng l\u01b0\u1ee3ng, thay \u0111\u1ed5i t\u1eadp t\u00ednh – sinh l\u00fd, n\u0103ng l\u1ef1c sinh s\u1ea3n, k\u00edch th\u01b0\u1edbc qu\u1ea7n th\u1ec3, k\u1ebft c\u1ea5u qu\u1ea7n x\u00e3,… Trong t\u01b0\u01a1ng lai, c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 l\u0129nh v\u1ef1c n\u00e0y \u1edf n\u01b0\u1edbc ta n\u00ean ch\u00fa tr\u1ecdng thu th\u1eadp d\u1eef li\u1ec7u cho nghi\u00ean c\u1ee9u c\u01a1 s\u1edf, \u0111\u1ed3ng th\u1eddi \u0111i s\u00e2u nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 l\u00fd lu\u1eadn v\u00e0 \u1ee9ng d\u1ee5ng; c\u1ea7n v\u1eadn d\u1ee5ng nhi\u1ec1u b\u00ed k\u00edp k\u1ef9 thu\u1eadt \u0111\u1ec3 ti\u1ebfn h\u00e0nh gi\u00e1m s\u00e1t tr\u01b0\u1eddng k\u1ef3 \u0111\u1ed1i v\u1edbi t\u1eadp t\u00ednh, sinh l\u00fd, \u0111\u1ed9ng th\u00e1i qu\u1ea7n th\u1ec3, t\u00ednh \u0111a d\u1ea1ng lo\u00e0i, ch\u1ea5t l\u01b0\u1ee3ng sinh c\u1ea3nh c\u1ee7a \u0111\u1ed9ng v\u1eadt hoang d\u00e3, c\u0169ng nh\u01b0 ph\u00e2n b\u1ed1 th\u1eddi gian – kh\u00f4ng gian, th\u00e1i \u0111\u1ed9 v\u00e0 h\u00e0nh vi c\u1ee7a du kh\u00e1ch; t\u1eeb \u0111\u00f3, \u1ee9ng d\u1ee5ng c\u00e1c k\u1ebft qu\u1ea3 gi\u00e1m s\u00e1t n\u00e0y \u0111\u1ec3 \u0111\u01b0a ra c\u00e1c quy\u1ebft s\u00e1ch qu\u1ea3n l\u00fd du kh\u00e1ch, qu\u1ea3n l\u00fd \u0111\u1ed9ng v\u1eadt hoang d\u00e3 v\u00e0 sinh c\u1ea3nh s\u1ed1ng c\u1ee7a ch\u00fang.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>\u1ea2nh h\u01b0\u1edfng, \u0111\u1ed9ng v\u1eadt hoang d\u00e3, du l\u1ecbch sinh th\u00e1i, gi\u00e1m s\u00e1t, khu b\u1ea3o t\u1ed3n, qu\u1ea3n l\u00fd<\/td>\n<\/tr>\n

Impacts of ecotourism activities on wildlife in conservation areas<\/strong><\/p>\n

Presently, ecotourism is planned or developed for many National Parks, Natural Reserves in Vietnam, but the studies of these impacts on wildlife are a few. A framework for monitoring and managing the effects of ecotourism on wildlife in natural Reserves in Vietnam should be proposed, based on reviewing the literature from scientists in Europe, USA, Australia and China. Ecotourism activities in conservation areas include wildlife viewing, hiking, all – terrain vehicles, snowmobiles, camping, motor – boating, floating, interpretation and visiting local community. Pattern, intensity, scope, temporal and spatial patterns of ecotourism activities are known as factors influencing the impacts on wildlife. Runaway, attracted and adapted three types of behaviors that wildlife learn to how respond to disturbances from tourism. There are plenty studies about ecotourism impacts on wildlife, mainly focusing on the flight responses, feeding, energy expenditure, physiological index, reproduction, population size, community structure. Due to the lack of research on ecotourism impacts, it is necessary for Vietnam to collect large basic data, and discuss some important questions about theory and application, and establish monitoring systems in reserves to measure wildlife behavior, physiology, population dynamics, and distribution; habitats, environmental quality; temporal and spatial characteristics, as well as the attitudes, and behavior of visitors. Monitoring methods include control area comparison for different levels of tourism intensity before and after development, to determine its long – term effect. Ecological research and monitoring should be applied to wildlife, habitat, and visitor management strategies used by conservation areas.<\/p>\n

Keywords: <\/i><\/b>Conservation areas, ecotourism, impacts, management, monitoring, wildlife<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

T\u1ed4NG QUAN NGHI\u00caN C\u1ee8U\u00a0C\u00c2Y S\u00c2M NG\u1eccC LINH (Panax vietnamensis<\/i> Ha et Grush.) \u0110I\u1ec0U KI\u1ec6N IN VITRO<\/p>\n

L\u01b0\u01a1ng Th\u1ecb Hoan1<\/sup>, Phan Th\u1ecb H\u01b0\u01a1ng Tr\u00e01<\/sup>, Ho\u00e0ng Th\u1ecb Nh\u01b0 N\u1ee51<\/sup>, L\u00ea Vi\u1ec7t D\u0169ng1<\/sup>,<\/p>\n

D\u01b0\u01a1ng Th\u1ecb Ph\u00fac H\u1eadu1<\/sup>, Nguy\u1ec5n \u0110\u0103ng Minh Ch\u00e1nh2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n D\u01b0\u1ee3c li\u1ec7u<\/p>\n

2<\/sup>Vi\u1ec7n C\u00e2y l\u01b0\u01a1ng th\u1ef1c v\u00e0 c\u00e2y th\u1ef1c ph\u1ea9m<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

S\u00e2m ng\u1ecdc linh (Panax vietnamensis,<\/i> Ha et Grushv), thu\u1ed9c h\u1ecd Nh\u00e2n s\u00e2m (Araliaceae) l\u00e0 lo\u1ea1i c\u00e2y \u0111\u1eb7c h\u1eefu v\u00e0 qu\u00fd hi\u1ebfm \u1edf Vi\u1ec7t Nam, c\u00f3 t\u00e1c d\u1ee5ng ch\u1ed1ng stress v\u1eadt l\u00fd, t\u00e2m l\u00fd, tr\u1ea7m c\u1ea3m, k\u00edch th\u00edch h\u1ec7 mi\u1ec5n d\u1ecbch, ch\u1ed1ng oxy h\u00f3a, l\u00e3o h\u00f3a… V\u00ec v\u1eady ph\u00e1t tri\u1ec3n v\u00e0 b\u1ea3o t\u1ed3n ngu\u1ed3n gen \u0111\u1ec3 cung c\u1ea5p cho ng\u00e0nh d\u01b0\u1ee3c \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong chi\u1ebfn l\u01b0\u1ee3c ph\u00e1t tri\u1ec3n c\u1ee7a qu\u1ed1c gia n\u00f3i chung v\u00e0 ng\u00e0nh n\u00f4ng nghi\u1ec7p, y h\u1ecdc n\u00f3i ri\u00eang. M\u1ee5c ti\u00eau c\u1ee7a b\u00e0i b\u00e1o n\u00e0y \u0111\u1ec3 t\u1ed5ng qu\u00e1t l\u1ea1i c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 nh\u00e2n gi\u1ed1ng c\u00e2y S\u00e2m ng\u1ecdc linh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p in vitro <\/i>trong \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 nu\u00f4i c\u1ea5y m\u00f4 t\u1ebf b\u00e0o t\u1ea1o ngu\u1ed3n d\u01b0\u1ee3c li\u1ec7u qu\u00ed v\u00e0 c\u00f3 \u0111\u1ecbnh h\u01b0\u1edbng ph\u00e1t tri\u1ec3n d\u01b0\u1ee3c li\u1ec7u S\u00e2m ng\u1ecdc linh trong t\u01b0\u01a1ng lai. M\u1eb7c d\u00f9, m\u1ed9t v\u00e0i nghi\u00ean c\u1ee9u v\u1ec1 S\u00e2m ng\u1ecdc linh ph\u00e1t tri\u1ec3n t\u1eeb th\u1eadp ni\u00ean 90 nh\u01b0 \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 sinh h\u1ecdc trong nh\u00e2n gi\u1ed1ng t\u1ea1o ngu\u1ed3n d\u01b0\u1ee3c li\u1ec7u S\u00e2m ng\u1ecdc linh th\u00f4ng qua nu\u00f4i c\u1ea5y m\u00f4 s\u1eb9o, ph\u00f4i v\u00f4 t\u00ednh, nu\u00f4i c\u1ea5y sinh kh\u1ed1i, ch\u1ed3i, l\u00e1, r\u1ec5 v\u00e0 c\u1ee7…g\u00f3p ph\u1ea7n mang l\u1ea1i th\u00e0nh c\u00f4ng \u0111\u00e1ng k\u1ec3 cho vi\u1ec7c ph\u00e1t tri\u1ec3n t\u1ea1o ngu\u1ed3n c\u00e2y gi\u1ed1ng, duy tr\u00ec v\u00e0 b\u1ea3o t\u1ed3n lo\u1ea1i s\u00e2m qu\u00fd hi\u1ebfm \u1edf Vi\u1ec7t Nam \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 b\u1edfi c\u00e1c nh\u00e0 khoa h\u1ecdc trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc. Tuy nhi\u00ean, g\u1eb7p m\u1ed9t s\u1ed1 kh\u00f3 kh\u0103n trong giai \u0111o\u1ea1n hu\u1ea5n luy\u1ec7n, ph\u00e1t tri\u1ec3n c\u00e2y con ngo\u00e0i v\u01b0\u1eddn \u01b0\u01a1m, v\u00e0 h\u00e0m l\u01b0\u1ee3ng saponin c\u1ee7a c\u00e2y nu\u00f4i c\u1ea5y in vitro<\/i> hi\u1ec7u qu\u1ea3 th\u1ea5p h\u01a1n so v\u1edbi s\u00e2m t\u1ef1 nhi\u00ean. Nh\u1eefng k\u1ebft qu\u1ea3 t\u1ed5ng quan n\u00e0y \u0111\u1ec3 l\u00e0m c\u01a1 s\u1edf cho c\u00e1c nghi\u00ean c\u1ee9u trong t\u01b0\u01a1ng lai.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>M\u00f4 ph\u00e2n sinh, m\u00f4 s\u1eb9o, nh\u00e2n gi\u1ed1ng, r\u1ec5 b\u1ea5t \u0111\u1ecbnh, S\u00e2m ng\u1ecdc linh<\/td>\n<\/tr>\n

Research overview of Panax vietnamensis<\/i> (Panax vietnamensis<\/i> Ha et Grush.) invitro condition<\/strong><\/p>\n

Panax vietnamensis<\/i> is a species of the ginseng genus, and is an endemic, valuable and rare plant species in Vietnam. This species is medicial propreties and the effect of anti stress, physics, mentality, depression and stimulating immune system, antioxidant and aging, etc. Therefore, the development and conservation of genetic resources to provide the pharmaceutical industry have played an important roles in the development strategy of Vietnam in general and agriculture, medicine in particular. The objective of this paper was to review the research results of Ngoc Linh ginseng by the application of tissue culture technology to create precious medicinal herbs and to orientate development for Ngoc Linh ginseng in the future. Although some studies on Ngoc Linh ginseng have been developed since the 1990s such as the application of biotechnology in propagation of Ngoc Linh ginseng through the culture of callus, cloned embryos, biomass, shoot, leaf, roots and tubers. The scientists in nation and the world have publicated and contributed to the significant success for the development of seedling production, maintaining and conservation the valuable and rare ginseng in Vietnam. However, there are some difficulties in the stage of seedlings in the nursery, and the saponin content of in vitro<\/i> cultivated plants is less effective than natural ginseng. This result is the reasons for further research in the future.<\/p>\n

Keywords: <\/i><\/b>Meristem, callus, indefinate roots, Panax vietnamensis<\/i>, propagation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

NGHI\u00caN C\u1ee8U M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC\u00a0C\u1ee6A LO\u00c0I XOAN \u0110\u00c0O (Prunus arborea <\/i>(Blume) Kalkman) T\u1ea0I HUY\u1ec6N NA R\u00cc, T\u1ec8NH B\u1eaeC K\u1ea0N<\/p>\n

\u0110\u1ed7 Ho\u00e0ng Chung1*<\/sup>, <\/sub>Nguy\u1ec5n C\u00f4ng Hoan1<\/sup>, Ma \u0110\u1ee9c Khi\u00eam2<\/sup><\/p>\n

1<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Th\u00e1i Nguy\u00ean<\/p>\n

2<\/sup> S\u1edf N\u00f4ng nghi\u1ec7p & PTNT t\u1ec9nh B\u1eafc K\u1ea1n<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Huy\u1ec7n Na R\u00ec, t\u1ec9nh B\u1eafc K\u1ea1n l\u00e0 \u0111\u1ecba ph\u01b0\u01a1ng ph\u00f9 h\u1ee3p v\u1edbi ph\u00e1t tri\u1ec3n v\u00f9ng nguy\u00ean li\u1ec7u g\u1ed7 l\u1edbn, Xoan \u0111\u00e0o (Prunus arborea<\/i>) l\u00e0 m\u1ed9t lo\u00e0i c\u00e2y g\u1ed7 b\u1ea3n \u0111\u1ecba th\u00edch h\u1ee3p v\u1edbi tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn. M\u1ee5c \u0111\u00edch c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m cung c\u1ea5p d\u1eabn li\u1ec7u khoa h\u1ecdc v\u1ec1 m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i; ph\u00e2n b\u1ed1 c\u1ee7a c\u00e2y Xoan \u0111\u00e0o; m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a l\u00e2m ph\u1ea7n n\u01a1i c\u00f3 c\u00e2y Xoan \u0111\u00e0o ph\u00e2n b\u1ed1. Tr\u00ean c\u01a1 s\u1edf c\u00e1c d\u1eef li\u1ec7u th\u1ee9 c\u1ea5p, \u0111i\u1ec1u tra ph\u1ecfng v\u1ea5n v\u00e0 \u0111i\u1ec1u tra th\u1ef1c \u0111\u1ecba (27 OTC), k\u1ebft qu\u1ea3 cho th\u1ea5y, t\u1ea1i huy\u1ec7n Na R\u00ec, B\u1eafc K\u1ea1n, lo\u00e0i c\u00e2y Xoan \u0111\u00e0o ph\u00e2n b\u1ed1 tr\u00ean \u0111\u1ea5t \u0111\u1ecf v\u00e0ng tr\u00ean \u0111\u00e1 phi\u1ebfn s\u00e9t (Fs), n\u01a1i c\u00f3 \u0111\u1ecba h\u00ecnh d\u1ed1c v\u1edbi \u0111\u1ed9 d\u1ed1c t\u1eeb 20o<\/sup> – 35o<\/sup>, th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi th\u1ecbt trung b\u00ecnh \u0111\u1ebfn s\u00e9t. Nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh h\u00e0ng n\u0103m \u0111\u1ea1t 20,9o<\/sup>C, s\u1ed1 gi\u1edd n\u1eafng h\u00e0ng n\u0103m \u0111\u1ea1t 1499,8 gi\u1edd\/n\u0103m, l\u01b0\u1ee3ng m\u01b0a h\u00e0ng n\u0103m \u0111\u1ea1t 1076,6mm. T\u1ea1i Na R\u00ec, lo\u00e0i Xoan \u0111\u00e0o ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu \u1edf tr\u1ea1ng th\u00e1i r\u1eebng trung b\u00ecnh v\u00e0 r\u1eebng ngh\u00e8o, ph\u00e2n b\u1ed1 \u1edf \u0111\u1ed9 cao t\u1eeb 308m \u0111\u1ebfn 456m so v\u1edbi m\u1eb7t n\u01b0\u1edbc bi\u1ec3n. Th\u00e0nh ph\u1ea7n lo\u00e0i c\u00e2y g\u1ed7 c\u1ee7a r\u1eebng (n\u01a1i c\u00f3 lo\u00e0i Xoan \u0111\u00e0o ph\u00e2n b\u1ed1) bi\u1ebfn \u0111\u1ed9ng t\u1eeb 13 – 32 lo\u00e0i, trong \u0111\u00f3 c\u00f3 t\u1eeb 6 \u0111\u1ebfn 8 lo\u00e0i tham gia c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh r\u1eebng. C\u00e1c lo\u00e0i c\u00e2y ch\u1ee7 y\u1ebfu l\u00e0 nh\u1eefng lo\u00e0i c\u00e2y \u01b0a s\u00e1ng, g\u1ed7 gi\u00e1 tr\u1ecb th\u1ea5p nh\u01b0: D\u1ebb gai (Castanopsis indica<\/i>), Kh\u00e1o (Machilus<\/i> spp.), V\u1ed1i thu\u1ed1c (Schima wallichii<\/i>), Tr\u00e1m chim (Canarium tonkiense<\/i>), Sau sau (Liquidambar formosana<\/i>); Tr\u1ea9u (Vernicia fordii<\/i>), Mu\u1ed3ng (Zenia insignis<\/i>), S\u1ed3i (Lithocarpus <\/i>spp.<\/i>), B\u1ee9a (Garcinia oblongifolia<\/i>); ngo\u00e0i ra c\u00e1c lo\u00e0i c\u00e2y g\u1ed7 c\u00f3 gi\u00e1 tr\u1ecb nh\u01b0 Xoan \u0111\u00e0o (Prunus arborea<\/i>) v\u00e0 Xoan nh\u1eeb (Allospondias lakonensis<\/i>) c\u0169ng tham gia trong c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh lo\u00e0i, \u0111\u1eb7c bi\u1ec7t trong tr\u1ea1ng th\u00e1i r\u1eebng trung b\u00ecnh th\u00ec lo\u00e0i Xoan \u0111\u00e0o c\u00f3 h\u1ec7 s\u1ed1 t\u1ed5 th\u00e0nh l\u1edbn. Lo\u00e0i Xoan \u0111\u00e0o ph\u00e2n b\u1ed1 \u1edf r\u1eebng ngh\u00e8o c\u00f3 \u0111\u1ed9 t\u00e0n che c\u1ee7a l\u00e2m ph\u1ea7n trung b\u00ecnh \u0111\u1ea1t 0,57; r\u1eebng trung b\u00ecnh c\u00f3 \u0111\u1ed9 t\u00e0n che \u0111\u1ea1t 0,7.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>B\u1eafc K\u1ea1n, c\u00e2y Xoan \u0111\u00e0o, \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc, Prunus arborea<\/i><\/td>\n<\/tr>\n

Study on silvic characteristics of Prunus arborea <\/i>(Blume) Kalkman species in Na Ri district, Bac Kan province<\/strong><\/p>\n

Na Ri district, Bac Kan province is an area suitable for the development of saw log production areas. Prunus arborea<\/i> is a native species which has potential for saw log plantation forest. The purpose of the study is to provide scientific data on characteristics of some ecological factors; distribution characteristics of Prunus arborea <\/i>species; forest characteristics where Prunus arborea <\/i>trees are distributed. On the basis of secondary data, interview and field surveys (27 plots), results showed that: in Na Ri district, Prunus arborea<\/i> species were distributed on yellowish red soils (Fs.). The soil is was derived from clay rocks, sloping terrain, the texture varies from medium loam to clay. The annual temperature is 20.9o<\/sup>C, the annual sunshine is 1499.8 hours per year, the annual rainfall is 1076.6mm per year. Prunus arborea<\/i> species is distributed mainly in the medium forest and poor forest, altitude level in between 308 and 456m above sea level, slope level between 20o<\/sup> and 35o<\/sup>. Tree species composition ranged from 13 – 32 species and 6 to 8 species that participated in composition formula. The woody species in composition formula are mainly photophilic with low values timber, such as: Castanopsis indica, Machilus <\/i>spp., Schima wallichii, Canarium tonkiense, Liquidambar formosana, Vernicia fordii, Zenia insignis, Lithocarpus <\/i>spp., Garcinia oblongifolia<\/i>; In addition, there are some valuable timber species, such as: Prunus arborea<\/i> and Allospondias lakonensis<\/i>, especially in the medium forest status, Prunus arborea<\/i> species has a large species composition coefficient. Prunus arborea<\/i> distribute in poor forest with canopy coverage is 0.57 and the canopy coverage is 0.7 in medium forest.<\/p>\n

Keywords: <\/i><\/b>Bac Kan, Prunus arborea<\/i> (Blume) Kalkman, silvic characteristics<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC C\u1ee6A LO\u00c0I XOAN M\u1ed8C (Toona surenii<\/i> Blume Merr) T\u1ea0I KHU B\u1ea2O T\u1ed2N LO\u00c0I V\u00c0 SINH C\u1ea2NH
\nNAM XU\u00c2N L\u1ea0C – B\u1eaeC K\u1ea0N<\/p>\n

H\u1ed3 Ng\u1ecdc S\u01a1n1<\/sup>*<\/sup>, Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n1<\/sup>, L\u01b0\u1eddng Qu\u1ed1c H\u1ea3i2<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Th\u00e1i Nguy\u00ean<\/p>\n

2<\/sup>Khu b\u1ea3o t\u1ed3n Lo\u00e0i v\u00e0 Sinh c\u1ea3nh Nam Xu\u00e2n L\u1ea1c – B\u1eafc K\u1ea1n<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh t\u1ea1i Khu b\u1ea3o t\u1ed3n Lo\u00e0i v\u00e0 Sinh c\u1ea3nh Nam Xu\u00e2n L\u1ea1c – B\u1eafc K\u1ea1n tr\u00ean 3 \u00f4 ti\u00eau chu\u1ea9n \u0111i\u1ec3n h\u00ecnh 1.000 m2<\/sup>. K\u1ebft qu\u1ea3 cho th\u1ea5y, t\u1ea7ng c\u00e2y cao c\u00f3 m\u1eadt \u0111\u1ed9 c\u00e2y dao \u0111\u1ed9ng t\u1eeb 470 – 520 c\u00e2y\/ha, c\u00e1c lo\u00e0i \u01b0u th\u1ebf trong c\u00e1c OTC bi\u1ebfn \u0111\u1ed9ng t\u1eeb 4 – 7 lo\u00e0i, trong \u0111\u00f3 c\u00e1c lo\u00e0i ch\u1ee7 \u0111\u1ea1o ch\u1ee7 y\u1ebfu l\u00e0 Nghi\u1ebfn (Excentrodendron tonkinense<\/i>), Xoan m\u1ed9c (Toona surenii)<\/i>, Mu\u1ed3ng \u0111en (Cassia siamea)<\/i> v\u00e0 Tr\u01b0\u1eddng m\u1eadt (Pavieasia annamensis)<\/i>. Nghi\u00ean c\u1ee9u c\u0169ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c lo\u00e0i \u01b0u th\u1ebf c\u1ee7a t\u1ea7ng c\u00e2y t\u00e1i sinh \u1edf c\u00e1c OTC dao \u0111\u1ed9ng t\u1eeb 10 – 13 lo\u00e0i v\u00e0 m\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh \u0111\u1ed9ng t\u1eeb 7.760 – 11.760 c\u00e2y\/ha, trong \u0111\u00f3 Xoan m\u1ed9c c\u00f3 560 – 960 c\u00e2y\/ha. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y s\u1ebd g\u00f3p ph\u1ea7n l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc cho qu\u1ea3n l\u00fd r\u1eebng t\u1ef1 nhi\u00ean theo h\u01b0\u1edbng b\u1ec1n v\u1eefng n\u00f3i chung v\u00e0 l\u00e0m c\u01a1 s\u1edf cho nghi\u00ean c\u1ee9u \u0111\u1ed9ng th\u00e1i c\u1ea5u tr\u00fac r\u1eebng \u1edf c\u00e1c giai \u0111o\u1ea1n ti\u1ebfp theo n\u00f3i ri\u00eang c\u0169ng nh\u01b0 c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh t\u00e1c \u0111\u1ed9ng v\u00e0o c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh theo h\u01b0\u1edbng c\u00f3 l\u1ee3i m\u1ee5c ti\u00eau kinh doanh, b\u1ea3o t\u1ed3n lo\u00e0i.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>B\u1eafc K\u1ea1n, \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc, Nam Xu\u00e2n L\u1ea1c, t\u00e1i sinh, Xoan m\u1ed9c<\/td>\n<\/tr>\n

Some biological characteristics of Toona surenii<\/i> Blume Merr in Nam Xuan Lac species & habibat conservation area, Bac Kan province<\/strong><\/p>\n

This study was conducted in Nam Xuan Lac Species and Habitat Conservation Area, Bac Kan province using 3 typical standard plots with area of 1000 m2<\/sup>. The study showed that the density of uppper level plants ranged from 470 – 520 species\/ha, the dominant species in the plots ranged from 4 – 7 species, of which the key species were Excentrodendron tonkinense<\/i>, Toona surenii<\/i>, Cassia javanica<\/i> and Amesiodendron chinense<\/i>. This study also identified dominant species of regeneration plants among plots ranged from 10 – 13 species and their density of 7.760 – 11.760 trees\/ha, of Toona surenii<\/i> was from 560 – 960 trees\/ha. This study result will provide important information for decision making to manage forests toward more sustaintable ways in Nam Xuan Lac, Bac Kan province. It also provides basis for further study in structural dynamic of forests in the future as well as silvicultural practice solutions for species consevation and development purposes.<\/p>\n

Keywords: <\/i><\/b>Bac Kan, biological characteristics, Nam Xuan Lac, regeneration, Toona surenii<\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0110\u1eb6C \u0110I\u1ec2M SINH TR\u01af\u1edeNG C\u1ee6A B\u1edcI L\u1edcI \u0110\u1ece (Machilus odoratissima <\/i>Nees) \u1ede T\u1ec8NH GIA LAI, \u0110\u1eaeK L\u1eaeK V\u00c0 KON TUM<\/p>\n

\u0110\u1eb7ng Th\u00e1i Ho\u00e0ng, \u0110\u1eb7ng Th\u00e1i D\u01b0\u01a1ng<\/p>\n

Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m – \u0110\u1ea1i h\u1ecdc Hu\u1ebf<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u01a1\u0300i l\u01a1\u0300i \u0111o\u0309 (Machilus odoratissima<\/i>\u00a0Nees) l\u00e0 lo\u00e0i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao. Hi\u1ec7n nay \u0111\u00e3 \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh T\u00e2y Nguy\u00ean, v\u00ec v\u1eady nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00f9ng tr\u1ed3ng r\u1eebng th\u00edch h\u1ee3p l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, sinh tr\u01b0\u1edfng v\u1ec1 chi\u1ec1u cao, \u0111\u01b0\u1eddng k\u00ednh, \u0111\u01b0\u1eddng k\u00ednh t\u00e1n v\u00e0 th\u1ec3 t\u00edch c\u1ee7a r\u1eebng tr\u1ed3ng B\u1eddi l\u1eddi \u0111\u1ecf giai \u0111o\u1ea1n 5 n\u0103m tu\u1ed5i c\u00f3 s\u1ef1 kh\u00e1c nhau gi\u1eefa c\u00e1c t\u1ec9nh v\u00e0 gi\u1eefa c\u00e1c v\u00f9ng \u0111i\u1ec1u tra trong t\u1eebng t\u1ec9nh. M\u1ee9c \u0111\u1ed9 dao \u0111\u1ed9ng v\u1ec1 th\u1ec3 t\u00edch c\u1ee7a c\u00e2y trung b\u00ecnh gi\u1eefa c\u00e1c v\u00f9ng \u0111i\u1ec1u tra l\u00e0 t\u1eeb 0,0302m3<\/sup> \u1edf \u0110\u1eafk L\u1eafk \u0111\u1ebfn 0,0677m3<\/sup> \u1edf Gia Lai, \u0111\u1ed9 ch\u00eanh l\u1ec7ch 0,037m3<\/sup>; M\u1ee9c \u0111\u1ed9 dao \u0111\u1ed9ng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh t\u00e1n gi\u1eefa c\u00e1c v\u00f9ng \u0111i\u1ec1u tra l\u00e0 t\u1eeb 2,10m \u1edf \u0110\u1eafk L\u1eafk \u0111\u1ebfn 3,23 m \u1edf Gia Lai, \u0111\u1ed9 ch\u00eanh l\u1ec7ch 1,13m; M\u1ee9c \u0111\u1ed9 dao \u0111\u1ed9ng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh gi\u1eefa c\u00e1c v\u00f9ng \u0111i\u1ec1u tra l\u00e0 t\u1eeb 10,00cm \u1edf \u0110\u1eafk L\u1eafk \u0111\u1ebfn 13,70cm \u1edf Gia Lai, \u0111\u1ed9 ch\u00eanh l\u1ec7ch 3,7cm; M\u1ee9c \u0111\u1ed9 dao \u0111\u1ed9ng v\u1ec1 chi\u1ec1u cao gi\u1eefa c\u00e1c v\u00f9ng \u0111i\u1ec1u tra l\u00e0 t\u1eeb 6,87m \u1edf \u0110\u1eafk L\u1eafk \u0111\u1ebfn 8,97m \u1edf Gia Lai, \u0111\u1ed9 ch\u00eanh l\u1ec7ch 2,1m. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch th\u1ed1ng k\u00ea b\u1eb1ng ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai v\u00e0 ti\u00eau chu\u1ea9n t (student) v\u1ec1 c\u00e1c ch\u1ec9 ti\u00eau D\u00ad1.3<\/sub>, Hvn<\/sub>, Dt, V v\u00e0 t\u1ed5ng h\u1ee3p c\u00e1c k\u1ebft qu\u1ea3 \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c t\u1ec9nh Gia Lai v\u00e0 t\u1ec9nh Kon Tum tr\u1ed3ng r\u1eebng B\u1eddi l\u1eddi \u0111\u1ecf l\u00e0 ph\u00f9 h\u1ee3p nh\u1ea5t. Trong t\u1ec9nh Gia Lai ch\u1ecdn \u0111\u01b0\u1ee3c ti\u1ec3u v\u00f9ng x\u00e3 Ayun v\u00e0 \u0110ak Taley, \u1edf t\u1ec9nh Kon Tum ch\u1ecdn \u0111\u01b0\u1ee3c ti\u1ec3u v\u00f9ng huy\u1ec7n Kon R\u1eaby v\u00e0 \u1edf t\u1ec9nh \u0110\u1eafk L\u1eafk ch\u1ecdn ti\u1ec3u v\u00f9ng huy\u1ec7n M\u2019\u0110rak tr\u1ed3ng r\u1eebng B\u1eddi l\u1eddi \u0111\u1ecf l\u00e0 th\u00edch h\u1ee3p.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>B\u1eddi l\u1eddi \u0111\u1ecf, sinh tr\u01b0\u1edfng, T\u00e2y Nguy\u00ean<\/td>\n<\/tr>\n

The growth characteristics of Machilus odoratissima<\/i> Nees in Gia Lai, Dak Lak, and Kon Tum provinces<\/strong><\/p>\n

Machilus odoratissima<\/i> Nees has been evaluated to be a tree species having the high economic value. Currently, this species has been planted in some provinces in the Central Highlands of Vietnam. Therefore, the present study aimed to investigate the growth characteristics of this species as the basis for selecting suitable afforestation areas. The study results show that tree height, tree diameter, canopy diameter, and tree volume in the 5 year period of forest plantation differed between provinces as well as between surveyed areas in each province. The level of variation in the tree volume average between surveyed areas ranged from 0.0302 m3<\/sup> in Dak Lak to 0.0677 m3<\/sup> in Gia Lai with the difference of 0.037 m3<\/sup>. The level of fluctuation in the canopy diameter between surveyed areas ranged 2.10m in Dak Lak to 3.23m in Gia Lai, and the level of difference between these provinces was 1.13m. The degree of fluctuation in the tree diameter between surveyed areas was 10.00 cm in Dak Lak to 13.70cm in Gia Lai with the difference of 3.7cm. The degree of fluctuation in the tree height between surveyed areas was from 6.87m in Dak Lak to 8.97m m in Gia Lai with the difference of\u00a0 2.1m. From the results based on statistical analyses using Anova and t – tests in D1.3<\/sub>, Hvn<\/sub>, Dt<\/sub>, and V, Gia Lai and Kon Tum provinces were selected as the most suitable afforestation regions of Machilus odoratissima<\/i> Nees. In Gia Lai province, Ayun and Dak Taley communes were more suitable for planting current species, while in Kon Tum province, Kon Ray commune was the suitable area. In Dak Lak, M\u2019Drak district was also selected as the suitable afforest area of Machilus odoratissima<\/i> Nees.<\/p>\n

Keywords: <\/i><\/b>Machilus odoratissima<\/i>\u00a0Nees, growth, Central Highlands<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U TR\u00daC R\u1eeaNG T\u1ef0 NHI\u00caN N\u01a0I C\u00d3 LO\u00c0I
\nD\u1eba T\u00d9NG S\u1eccC TR\u1eaeNG H\u1eb8P (Amentotaxus argotaenia<\/i> (Hance) Pilger) PH\u00c2N B\u1ed0 T\u1ea0I HUY\u1ec6N M\u1ed8C CH\u00c2U, T\u1ec8NH S\u01a0N LA<\/p>\n

Phan Th\u1ecb Thanh Huy\u1ec1n1<\/sup>, Nguy\u1ec5n V\u0103n H\u00f9ng2<\/sup><\/p>\n

1 <\/sup>\u0110\u1ea1i h\u1ecdc T\u00e2y B\u1eafc<\/p>\n

2<\/sup> Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p T\u00e2y B\u1eafc, Vi\u1ec7n KHLN Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac t\u1ea7ng c\u00e2y cao r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p ph\u00e2n b\u1ed1 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf 3 \u0111ai cao: 1.000 – 1.300m, 1.300 – 1.600m, l\u1edbn h\u01a1n 1.600m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n t\u1ea1i huy\u1ec7n M\u1ed9c Ch\u00e2u, t\u1ec9nh S\u01a1n La. Khu v\u1ef1c nghi\u00ean c\u1ee9u kh\u00e1 \u0111a d\u1ea1ng v\u1edbi nhi\u1ec1u lo\u00e0i c\u00e2y kh\u00e1c nhau, dao \u0111\u1ed9ng t\u1eeb 17 – 26 lo\u00e0i\/OTC, trong \u0111\u00f3 c\u00f3 5 – 9 lo\u00e0i tham gia v\u00e0o c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh theo ch\u1ec9 s\u1ed1 IV%, c\u00f2n 12 – 17 lo\u00e0i kh\u00f4ng tham gia v\u00e0o c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh; C\u00e2y D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p ph\u00e2n b\u1ed1 \u1edf \u0111ai cao 1.300 – 1.600m v\u00e0 l\u1edbn h\u01a1n 1.600m, s\u1ed1 l\u01b0\u1ee3ng \u00edt, dao \u0111\u1ed9ng t\u1eeb 4 – 6 c\u00e2y\/ha. C\u1ea5u tr\u00fac t\u1ea7ng th\u1ee9 t\u1ea7ng c\u00e2y cao r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p ph\u00e2n b\u1ed1 c\u00f3 3 t\u1ea7ng t\u00e1n, t\u1ea7ng v\u01b0\u1ee3t tr\u1ed9i s\u1ed1 c\u00e2y c\u00f2n th\u01b0a th\u1edbt (1 – 8 c\u00e2y\/ha), t\u1ea7ng d\u01b0\u1edbi t\u00e1n s\u1ed1 c\u00e2y tham gia ch\u01b0a nhi\u1ec1u (8 – 56 c\u00e2y\/ha) v\u00e0 ch\u1ee7 y\u1ebfu l\u00e0 t\u1ea7ng t\u00e1n ch\u00ednh (141 – 173 c\u00e2y\/ha); \u0110\u1ed9 t\u00e0n che \u0111\u1ea1t \u1edf m\u1ee9c trung b\u00ecnh t\u1eeb 0,6 – 0,7. H\u00e0m ph\u00e2n b\u1ed1 Weibull ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ec3 m\u00f4 ph\u1ecfng quy lu\u1eadt ph\u00e2n b\u1ed1 s\u1ed1 c\u00e2y theo c\u1ea5p \u0111\u01b0\u1eddng k\u00ednh v\u00e0 c\u1ea5p chi\u1ec1u cao. D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p c\u00f3 m\u1ed1i quan h\u1ec7 sinh th\u00e1i t\u01b0\u01a1ng h\u1ed7 v\u1edbi lo\u00e0i c\u00e2y \u0110\u1ec9nh t\u00f9ng, Kh\u00e1o l\u00e1 d\u00e0i, D\u1ebb cu\u1ed1ng.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>C\u1ea5u tr\u00fac D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p, c\u1ea5u tr\u00fac r\u1eebng, S\u01a1n La<\/td>\n<\/tr>\n

Some characteristics of natural forest structure wich have Amentotaxus argotaenia<\/i> (Hance) Pilger in Moc Chau district, Son La province<\/strong><\/p>\n

Research on the characteristics of natural forest structure with narrow Amentotaxus argotaenia<\/i> (Hance) Pilger distributed in 3 elevations: 1,000 \u2013 1,300m, 1,300 – 1,600m, 1,600m above the sea level in Moc Chau district, Son La. The study area is quite diverse with many different species of tree, ranging from 17 – 26 species\/OTC, of which 5 to 9 species participate in the composition fomular of the IV% index, while 12 – 17 species do not participate in this fomular; Amentotaxus argotaenia <\/i>(Hance) Pilger is distributed at the belt height of 1,300 – 1,600m and larger than 1,600m, in small numbers, ranging from 4 – 6 plants\/ha. The structure of the second layer of natural forest, which has Amentotaxus argotaenia<\/i> (Hance) Pilger, has three layers of canopy. In dominance layer, the number of trees is sparse (1 – 8 trees\/ha) and the number of trees under the canopy is low (8 – 56 trees\/ha) and mainly the main canopy (141 – 173 trees\/ha). The level of forest cover is between 0.6 and 0.7. The Weibull distribution is best suited to simulate the distribution of tree numbers by diameter classes and height. Amentotaxus argotaenia <\/i>(Hance) Pilger is associated ecologically with the species of Cephalotaxus mannii, Machilus odoratissima <\/i>Ness, Castanopsis fissa <\/i>Rehd.et Will.<\/p>\n

Keywords: <\/i><\/b>Amentotaxus argotaenia<\/i> (Hance) Pilger, forest tructure, Son La<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0110\u1eb6C \u0110I\u1ec2M T\u00c1I SINH R\u1eeaNG T\u1ef0 NHI\u00caN N\u01a0I C\u00d3 LO\u00c0I C\u00c2Y
\nD\u1eba T\u00d9NG S\u1eccC TR\u1eaeNG H\u1eb8P (Amentotaxus argotaenia<\/i> (Hance) Pilger) PH\u00c2N B\u1ed0 T\u1ea0I HUY\u1ec6N M\u1ed8C CH\u00c2U, T\u1ec8NH S\u01a0N LA<\/p>\n

Phan Th\u1ecb Thanh Huy\u1ec1n1<\/sup>, Nguy\u1ec5n V\u0103n H\u00f9ng2<\/sup><\/p>\n

1 <\/sup>\u0110\u1ea1i h\u1ecdc T\u00e2y B\u1eafc<\/p>\n

2<\/sup> Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p T\u00e2y B\u1eafc, Vi\u1ec7n KHLN Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p (AmentotaxusArgotaenia<\/i> (Hance) Pilger) thu\u1ed9c h\u1ecd Th\u00f4ng \u0111\u1ecf (Taxaceac), l\u00e0 m\u1ed9t trong s\u1ed1 nh\u1eefng lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 ph\u00e2n b\u1ed1 \u1edf v\u00f9ng T\u00e2y B\u1eafc v\u00e0 th\u01b0\u1eddng m\u1ecdc \u1edf \u0111\u1ec9nh n\u00fai cao, trong nh\u1eefng khu r\u1eebng \u00c1 nhi\u1ec7t \u0111\u1edbi th\u01b0\u1eddng xanh c\u00e2y l\u00e1 r\u1ed9ng, tr\u00ean \u0111\u1ea5t n\u00fai \u0111\u00e1 v\u00f4i. \u1ede Vi\u1ec7t Nam lo\u00e0i c\u00e2y n\u00e0y c\u00f2n c\u00f3 ph\u00e2n b\u1ed1 \u1edf S\u01a1n La, Thanh Ho\u00e1, Th\u00e1i Nguy\u00ean, Tuy\u00ean Quang, V\u0129nh Ph\u00fac, Ph\u00fa Th\u1ecd, L\u00e0o cai, Cao b\u1eb1ng (Nguy\u1ec5n \u0110\u1ee9c T\u1ed1 L\u01b0u, Philip Ian Thomas, 2004)… T\u1ed5 th\u00e0nh lo\u00e0i c\u00e2y t\u00e1i sinh trong khu v\u1ef1c nghi\u00ean c\u1ee9u l\u00e0 r\u1ea5t \u0111a d\u1ea1ng, nh\u1eefng lo\u00e0i chi\u1ebfm \u01b0u th\u1ebf l\u00e0 D\u1ebb cu\u1ed1ng, D\u1ebb gai \u1ea5n \u0111\u1ed9, Nh\u1ecdc, V\u1ed1i thu\u1ed1c, Re h\u01b0\u01a1ng, D\u1ebb gai \u0111\u1ecf; D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p xu\u1ea5t hi\u1ec7n \u1edf \u0111ai cao 1300 – 1600m v\u00e0 \u0111ai cao tr\u00ean 1600m v\u1edbi s\u1ed1 l\u01b0\u1ee3ng \u00edt. M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u dao \u0111\u1ed9ng t\u1eeb 2.250 – 3.917 c\u00e2y\/ha, trong \u0111\u00f3 m\u1eadt \u0111\u1ed9 c\u00e2y D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p t\u00e1i sinh dao \u0111\u1ed9ng trong kho\u1ea3ng 83 – 250 c\u00e2y\/ha. C\u00e2y t\u00e1i sinh c\u00f3 ph\u1ea9m ch\u1ea5t t\u1ed1t trong khu v\u1ef1c nghi\u00ean c\u1ee9u chi\u1ebfm t\u1eeb 1.083 – 1.750 c\u00e2y\/ha (36,10 – 48,14%), c\u00e2y c\u00f3 ph\u1ea9m ch\u1ea5t trung b\u00ecnh chi\u1ebfm t\u1eeb 750 – 1.333 c\u00e2y\/ha (28,56 – 44,43%) v\u00e0 c\u00e2y c\u00f3 ph\u1ea9m ch\u1ea5t x\u1ea5u chi\u1ebfm t\u1eeb 250 – 660 c\u00e2y\/ha (10,72 – 19,43%)<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p, S\u01a1n La, t\u00e1i sinh<\/td>\n<\/tr>\n

The traits of natural regeneration of Amentotaxus argotaenia <\/i>(Hance) Pilger forest in Moc Chau district, Son La province<\/strong><\/p>\n

Amentotaxus argotaenia<\/i> (Hance) Pilger belongs to the Taxaceace family, which is one of the indigenous tree species naturally distributed in the Northwest and usually grows in high mountains, as well as the evergreen broad – leaved and limestone forest. In Vietnam, this species also was naturally found in Son La, Thanh Hoa, Thai Nguyen, Tuyen Quang, Vinh Phuc, Phu Tho, Lao Cai, Cao Bang provinces, etc (Nguyen \u0110uc To Luu, Philip Ian Thomas, 2004). We studied the natural regeneration forest where Amentotaxus argotaenia<\/i> (Hance) Pilger distributed in Moc Chau district. The results revealed that the naturel composition of seedling and sapling regeneration in the study area is very diversity, with some dominant species such as Castanopsis fissa<\/i> Rehd.et Will, Castanopsis indian<\/i> A.DC, Polyathia cerasoides<\/i> Benth et Hook, Schima wallichii<\/i> Choisy, Cinnamomum iners<\/i> Reinw. Ex Blume, and Castanopsis tonkinensis<\/i> Seem., Amentotaxus argotaenia<\/i> (Hance) Pilger mainly occurs in the elevation from 1,300 to 1,600m and but in over 1,600m with only small munber found. The density of regenerated trees in the study area ranged from 2,250 to 3,917 trees\/ha, of which the density of regenerated Amentotaxus argotaenia <\/i>(Hance) Pilger was only ranged from 83 to 250 trees\/ha. In the total of regenerated trees the trees with good quality were from 1,083 to 1,750 trees\/ha, accounting for 36.10% to 48.14%, average trees with 750 – 1,333 trees\/ha, accounting for 28.56% to 44.43%, trees with bad quality. The number of trees from 250 to 667 trees\/ha accounts for 10.72 to 19.43%. For the original regenetation, there were 81.37% regenated trees from natural seeds and 18.63% from coppices.<\/p>\n

Keywords: <\/i><\/b>Amentotaxus argotaenia<\/i> (Hance) Pilger, Son La, Regeneration<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0110\u1eb6C TR\u01afNG C\u00c1C TR\u1ea0NG TH\u00c1I R\u1eeaNG PH\u00d2NG H\u1ed8 \u0110\u1ea6U NGU\u1ed2N L\u01afU V\u1ef0C S\u00d4NG P\u00d4 K\u00d4, T\u1ec8NH KON TUM<\/p>\n

Hu\u1ef3nh V\u0103n Chung<\/p>\n

Tr\u01b0\u1eddng Cao \u0111\u1eb3ng Kinh t\u1ebf – K\u1ef9 thu\u1eadt Kon Tum<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

S\u00f4ng P\u00f4 K\u00f4 n\u1eb1m \u1edf ph\u00eda T\u00e2y c\u1ee7a t\u1ec9nh Kon Tum, v\u1edbi di\u1ec7n t\u00edch l\u01b0u v\u1ef1c kho\u1ea3ng 316.676,2ha, chi\u1ebfm 32,7% di\u1ec7n t\u00edch t\u1ef1 nhi\u00ean to\u00e0n t\u1ec9nh, trong \u0111\u00f3 di\u1ec7n t\u00edch c\u00f3 r\u1eebng 164.685,4ha (RPH c\u00f3 64.052,4ha, R\u0110D 11.909,6ha, RSX 78.931,1ha), chi\u1ebfm 17,7% di\u1ec7n t\u00edch c\u00f3 r\u1eebng c\u1ee7a to\u00e0n t\u1ec9nh, v\u1edbi tr\u1eef l\u01b0\u1ee3ng kho\u1ea3ng 20,64 tri\u1ec7u m3<\/sup>, chi\u1ebfm 24,8% t\u1ed5ng tr\u1eef l\u01b0\u1ee3ng g\u1ed7 to\u00e0n t\u1ec9nh (83,3 tri\u1ec7u m3<\/sup>). Tr\u1ea1ng th\u00e1i r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh c\u00f3 di\u1ec7n t\u00edch l\u1edbn nh\u1ea5t, c\u00f3 110.044ha, chi\u1ebfm 66,8% di\u1ec7n t\u00edch c\u00f3 r\u1eebng to\u00e0n l\u01b0u v\u1ef1c v\u00e0 chi\u1ebfm 24,9% di\u1ec7n t\u00edch r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh c\u1ee7a to\u00e0n t\u1ec9nh. R\u1eebng tre n\u1ee9a c\u00f3 kho\u1ea3ng 150,72 tri\u1ec7u c\u00e2y tre n\u1ee9a c\u00e1c lo\u1ea1i, chi\u1ebfm 23,7% t\u1ed5ng tr\u1eef l\u01b0\u1ee3ng tre n\u1ee9a to\u00e0n t\u1ec9nh (637,1 tri\u1ec7u c\u00e2y). Di\u1ec7n t\u00edch r\u1eebng v\u00e0 \u0111\u1ea5t l\u00e2m nghi\u1ec7p ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u gi\u1eefa c\u00e1c \u0111\u01a1n v\u1ecb h\u00e0nh ch\u00ednh huy\u1ec7n, trong \u0111\u00f3 t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf c\u00e1c huy\u1ec7n \u0110\u1eafc Glei c\u00f3 56.604ha, chi\u1ebfm 34,4% di\u1ec7n t\u00edch c\u00f3 r\u1eebng to\u00e0n l\u01b0u v\u1ef1c, Tu M\u01a1 R\u00f4ng (49.129ha, 29,8%), \u0110\u1eafk H\u00e0 (23.637ha, 14,4%), \u0110\u1eafk T\u00f4 (19.272ha, 11,7%). C\u1ea5u tr\u00fac ph\u00e2n b\u1ed1 s\u1ed1 c\u00e2y theo c\u1ea5p \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh v\u00e0 r\u1eebng l\u00e1 kim c\u00f3 d\u1ea1ng ph\u00e2n b\u1ed1 gi\u1ea3m, s\u1ed1 c\u00e2y l\u1edbn nh\u1ea5t \u1edf c\u1ee1 k\u00ednh nh\u1ecf nh\u1ea5t, v\u00e0 gi\u1ea3m d\u1ea7n khi c\u1ee1 k\u00ednh t\u0103ng l\u00ean. Khi \u0111\u01b0\u1eddng k\u00ednh c\u00e2y r\u1eebng t\u0103ng th\u00ec m\u1eadt \u0111\u1ed9 gi\u1ea3m, c\u1ee1 k\u00ednh t\u1eeb 15 – 20cm tr\u1edf l\u00ean, m\u1eadt \u0111\u1ed9 c\u00e2y r\u1eebng gi\u1ea3m theo th\u1ee9 t\u1ef1 c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng: LRTX – G > LRTX – TB > LRTX – N > LRTX – PH v\u00e0 LK – G > LK – TB > LK – N > LK – PH.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>Kon Tum, l\u00e1 kim, l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh, l\u01b0u v\u1ef1c s\u00f4ng P\u00f4 K\u00f4<\/td>\n<\/tr>\n

The characteristics of watershed protection forests in the Po Ko river basin in Kon Tum province<\/strong><\/p>\n

Po Ko river is located in the western part of Kon Tum province, with a basin area of \u200b\u200b \u200b\u200b316,676.2ha, accounting for 32.7% of the province\u2019s natural area, of which the forest area is 164,685.4ha (RPH 64,052.4ha, R\u0110D 11,889.6ha, RSX 78.931,1ha), accounting for 17.7% of the total forest area of \u200b\u200bthe province, with reserves of about 20.64 million m3<\/sup>, accounting for 24.8% of the total timber volume in the province (83.3 million m3<\/sup>). The broardleaf evergreen forest has the largest area of \u200b\u200b110,044ha, accounting for 66.8% of the total forest area and accounting for 24.9% of the broardleaf evergreen forest area of \u200b\u200bthe province. Bamboo forest has about 150.72 million bamboo of all kinds, accounting for 23.7% of total bamboo reserves in the province (637.1 million trees). The area of \u200b\u200bforest and forest land is unevenly distributed among district administrative units, of which 56,604ha are in Dak Glei, accounting for 34.4% of the total forest area; Tu Mo Rong (49,129ha, 29.8%), Dak Ha (23,677ha, 14.4%), Dak To (19,272ha, 11.7%). The structure of diameter distribution of broardleaf evergreen forest and coniferous forest species has a reduced distribution pattern, the largest number of trees at the smallest diameter, and decreases as the diameter increases. When the diameter of forest trees increases, the density decreases, the diameter of 15 – 20cm and over, the density of forest trees decreases in the order of forest status: LRTX – G > LRTX – TB > LRTX – N > LRTX – PH and LK – G > LK – TB > LK – N > LK – PH.<\/p>\n

Keywords: <\/i><\/b>Kon Tum, Po Ko basin, the broardleaf evergreen forest, the coniferous forest, watershedprotection<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0110\u1eb6C \u0110I\u1ec2M SINH H\u1eccC V\u00c0 PH\u00d2NG TR\u1eea\u00a0LO\u00c0I S\u00c2U (Orthaga<\/i><\/a> exvinacea<\/i> Hamp.) H\u1ea0I L\u00c1 LONG N\u00c3O (Cinnamomum camphora <\/i>Linnaeus)\u00a0T\u1ea0I HUY\u1ec6N GIA B\u00ccNH, T\u1ec8NH B\u1eaeC NINH<\/p>\n

L\u00ea V\u0103n B\u00ecnh, Nguy\u1ec5n Qu\u1ed1c Th\u1ed1ng<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

N\u0103m 2016 t\u1ea1i huy\u1ec7n Gia B\u00ecnh, t\u1ec9nh B\u1eafc Ninh xu\u1ea5t hi\u1ec7n lo\u00e0i S\u00e2u h\u1ea1i l\u00e1 Long n\u00e3o tr\u00ean 2 n\u0103m tu\u1ed5i; Lo\u00e0i s\u00e2u n\u00e0y c\u00f3 4 pha (tr\u01b0\u1edfng th\u00e0nh, tr\u1ee9ng, s\u00e2u non v\u00e0 nh\u1ed9ng), t\u00ean khoa h\u1ecdc l\u00e0 Orthaga<\/i><\/a> exvinacea <\/i>Hamp., thu\u1ed9c h\u1ecd Pyralidae, b\u1ed9 Lepidoptera; tr\u01b0\u1edfng th\u00e0nh to\u00e0n th\u00e2n c\u00f3 m\u00e0u x\u00e1m n\u00e2u, tr\u01b0\u1edfng th\u00e0nh c\u00e1i c\u01a1 th\u1ec3 d\u00e0i trung b\u00ecnh 1,22cm (\u00b10,06); r\u00e2u \u0111\u1ea7u h\u00ecnh s\u1ee3i ch\u1ec9; tr\u01b0\u1edfng th\u00e0nh \u0111\u1ef1c c\u01a1 th\u1ec3 d\u00e0i trung b\u00ecnh 1,13cm (\u00b10,03); r\u00e2u \u0111\u1ea7u h\u00ecnh l\u00f4ng chim; tr\u1ee9ng m\u00e0u xanh ph\u1edbt v\u00e0ng; s\u00e2u non to\u00e0n th\u00e2n c\u00f3 m\u00e0u n\u00e2u b\u00f3ng v\u00e0 k\u00edch th\u01b0\u1edbc s\u00e2u non thay \u0111\u1ed5i theo tu\u1ed5i; nh\u1ed9ng m\u00e0u n\u00e2u t\u1ed1i. S\u00e2u h\u1ea1i l\u00e1 Long n\u00e3o nu\u00f4i trong ph\u00f2ng th\u00ed nghi\u1ec7m \u1edf \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 28,9o<\/sup>C v\u00e0 \u1ea9m \u0111\u1ed9 (RH) 78,5% th\u1eddi gian ho\u00e0n th\u00e0nh v\u00f2ng \u0111\u1eddi trung b\u00ecnh l\u00e0 53,5 ng\u00e0y. Ch\u1ecdn \u0111\u01b0\u1ee3c thu\u1ed1c Ofatox 400EC ph\u00f2ng tr\u1eeb S\u00e2u cu\u1ed1n l\u00e1 Long n\u00e3o \u0111\u1ea1t hi\u1ec7u l\u1ef1c cao nh\u1ea5t 99,8% sau 8 gi\u1edd phun thu\u1ed1c.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>G\u00e2y h\u1ea1i, \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, v\u00f2ng \u0111\u1eddi v\u00e0 Cinnamomum camphora<\/i><\/td>\n<\/tr>\n

Biological characteristic and control measure of Orthaga exvinacea<\/i> Hamp. damaging leaf of Cinnamomum camphora<\/i> Linnaeus in Gia Binh district, Bac Ninh province<\/strong><\/p>\n

In 2016, in Gia Binh district, Bac Ninh province, a leaf eating species appeared on the 2 – year – old trees; this insect species, Orthaga exvinacea<\/i> Hamp. (Pyralidae, Lepidoptera), has four stages (maturity, egg, larva and pupa). The body of mature is brownish gray, the female body length reaches 1.22cm (\u00b10.06) on average; setaceous antenna; average body length of males is 1.13cm (\u00b10.03); antenna has plumose shape; the eggs are yellowish blue; whole body of the larva is brownish and the size of young larva varies with age; puppies are dark brown. Camphor leaf eating insects were reared in laboratory at average temperature of 28.9o<\/sup>C and humidity (RH) of 78.5%. The average life expectancy is 53.5 days. Selection of the drug Ofatox 400EC for prevention of Camphor leaf eating insects reached the highest effect of 99.8% after 8 hours post spraying.<\/p>\n

Keywords: <\/i><\/b>Damage, morphology, life cycle and Cinnamomum camphora<\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0110\u1eb6C \u0110I\u1ec2M SINH H\u1eccC V\u00c0 TH\u00c0NH PH\u1ea6N THI\u00caN \u0110\u1ecaCH C\u1ee6A S\u00c2U \u0110O \u0102N L\u00c1 (Biston suppressaria<\/i> Guen\u00e9e) H\u1ea0I KEO TAI T\u01af\u1ee2NG (Acacia mangium<\/i>) T\u1ea0I QU\u1ea2NG NINH<\/p>\n

Nguy\u1ec5n Ho\u00e0i Thu, \u0110\u00e0o Ng\u1ecdc Quang, B\u00f9i Quang Ti\u1ebfp<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Biston suppressaria <\/i>Guen\u00e9e <\/b>l\u00e0 lo\u00e0i S\u00e2u \u0111o \u0103n l\u00e1 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n l\u00e0 m\u1ed1i \u0111e d\u1ecda m\u1edbi cho r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng t\u1ea1i Vi\u1ec7t Nam trong v\u00e0i n\u0103m g\u1ea7n \u0111\u00e2y, \u0111\u1eb7c bi\u1ec7t l\u00e0 t\u1ea1i t\u1ec9nh Qu\u1ea3ng Ninh. Qua qu\u00e1 tr\u00ecnh nu\u00f4i S\u00e2u \u0111o trong ph\u00f2ng th\u00ed nghi\u1ec7m \u1edf \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 28o<\/sup>C, \u1ea9m \u0111\u1ed9 80% cho th\u1ea5y \u0111\u00e2y l\u00e0 lo\u00e0i bi\u1ebfn th\u00e1i ho\u00e0n to\u00e0n. V\u00f2ng \u0111\u1eddi c\u1ee7a s\u00e2u \u0111o \u0103n l\u00e1 Keo tai t\u01b0\u1ee3ng g\u1ed3m 4 giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n: Tr\u01b0\u1edfng th\u00e0nh, tr\u1ee9ng, s\u00e2u non v\u00e0 nh\u1ed9ng. Th\u1eddi gian ho\u00e0n th\u00e0nh v\u00f2ng \u0111\u1eddi trung b\u00ecnh l\u00e0 63 ng\u00e0y (dao \u0111\u1ed9ng t\u1eeb 55 \u0111\u1ebfn 71 ng\u00e0y). Qua \u0111i\u1ec1u tra, theo d\u00f5i ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng v\u00e0 nu\u00f4i S\u00e2u \u0111o trong ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u00e3 thu \u0111\u01b0\u1ee3c 5 lo\u00e0i thi\u00ean \u0111\u1ecbch c\u1ee7a S\u00e2u \u0111o thu\u1ed9c 5 h\u1ecd, trong \u0111\u00f3 c\u00f3 02 lo\u00e0i thi\u00ean \u0111\u1ecbch b\u1eaft m\u1ed3i (B\u1ecd ng\u1ef1a v\u00e0 B\u1ecd ng\u1ef1a c\u00e1nh xanh Trung B\u1ed9) \u1edf giai \u0111o\u1ea1n s\u00e2u non v\u00e0 s\u00e2u tr\u01b0\u1edfng th\u00e0nh v\u1edbi m\u1ee9c \u0111\u1ed9 xu\u1ea5t hi\u1ec7n l\u00e0 \u00edt ph\u1ed5 bi\u1ebfn; 03 lo\u00e0i thi\u00ean \u0111\u1ecbch k\u00fd sinh s\u00e2u non trong \u0111\u00f3 lo\u00e0i Ru\u1ed3i ba v\u1ea1ch v\u00e0 N\u1ea5m b\u1ea1ch c\u01b0\u01a1ng l\u00e0 r\u1ea5t ph\u1ed5 bi\u1ebfn.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>Keo tai t\u01b0\u1ee3ng, S\u00e2u \u0111o, thi\u00ean \u0111\u1ecbch, v\u00f2ng \u0111\u1eddi, \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc<\/td>\n<\/tr>\n

Biological characteristics and natural enemies of Looper caterpillar (Biston suppressaria<\/i> Guen\u00e9e) associated with Acacia mangium<\/i> in Quang Ninh province<\/strong><\/p>\n

In the past few years, a Looper caterpillar (Biston suppressaria <\/i>Guen\u00e9e) has become a severe pest of Acacia mangium<\/i> plantation in Viet Nam, especially in Quang Ninh province. Larval rearing was carried out under laboratory conditions at 28\u00b0C and 80% R.H, the result showed that this is complete metamorphic species, and their lifecycle is 63 days (ranging from 55 to 71 days) and comprises of four developmental stages: adult, egg, larva and pupa. According to the results of field observation and rearing in laboratory, there are five natural enemy species of Biston suppressaria<\/i> of which two species are predatory natural enemies (Mantis<\/i> sp. and Creobroter apicalis<\/i>) <\/i>associated with larva and adult stage at low frequency of appearance (+); three species are parasitic natural enemies associated with the lava stage, especially Exorista sorbillans <\/i>and Beauveria<\/i> bassiana <\/i>at high frequency of appearance (+++).<\/p>\n

Keywords: <\/i><\/b>Acacia mangium<\/i>, Biston suppressaria<\/i>, natural enemies, lifecycle, biological characteristics<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

B\u1ec6NH TH\u1ed0I R\u1ec4 QU\u1ebe \u1ede GIAI \u0110O\u1ea0N V\u01af\u1edcN \u01af\u01a0M V\u00c0 \u0110\u1ec0 XU\u1ea4T BI\u1ec6N PH\u00c1P QU\u1ea2N L\u00dd D\u1ecaCH B\u1ec6NH \u1ede T\u1ec8NH L\u00c0O CAI<\/p>\n

V\u0169 V\u0103n \u0110\u1ecbnh, \u0110\u1eb7ng Nh\u01b0 Qu\u1ef3nh, L\u00ea Th\u1ecb Xu\u00e2n, Nguy\u1ec5n Th\u1ecb Loan,<\/p>\n

Ph\u1ea1m V\u0103n Nh\u1eadt v\u00e0 Tr\u1ea7n Nh\u1eadt T\u00e2n<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

C\u00e2y qu\u1ebf (Cinnamomum cassia<\/i>) thu\u1ed9c h\u1ecd Long n\u00e3o (Lauraceae) l\u00e0 c\u00e2y \u0111a t\u00e1c d\u1ee5ng. Tr\u01b0\u1edbc \u0111\u00e2y, c\u00e2y qu\u1ebf ch\u1ec9 b\u00e1n \u0111\u01b0\u1ee3c v\u1ecf, hi\u1ec7n nay, th\u00e2n, c\u00e0nh, l\u00e1 \u0111\u1ec1u b\u00e1n \u0111\u01b0\u1ee3c v\u1edbi gi\u00e1 cao. Th\u00e2n Qu\u1ebf sau khi b\u00f3c v\u1ecf b\u00e1n cho c\u00e1c c\u01a1 s\u1edf ch\u1ebf bi\u1ebfn g\u1ed7 l\u00e0m v\u00e1n gh\u00e9p thanh, v\u00e1n s\u00e0n, \u0111\u1ed3 gia d\u1ee5ng ho\u1eb7c l\u00e0m c\u1ed9t ch\u1ed1ng… C\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb Qu\u1ebf c\u00f3 gi\u00e1 tr\u1ecb xu\u1ea5t kh\u1ea9u \u0111em l\u1ea1i ngu\u1ed3n l\u1ee3i kinh t\u1ebf to l\u1edbn. Ngo\u00e0i l\u1ee3i \u00edch v\u1ec1 m\u1eb7t kinh t\u1ebf, c\u00e2y qu\u1ebf c\u00f2n \u0111\u00f3ng g\u00f3p v\u00e0o vi\u1ec7c b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i, b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n s\u1ef1 \u0111a d\u1ea1ng c\u00e1c ngu\u1ed3n gen qu\u00fd c\u00e2y b\u1ea3n \u0111\u1ecba. Hi\u1ec7n nay di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng Qu\u1ebf \u1edf n\u01b0\u1edbc ta kho\u1ea3ng 40.000ha, \u1edf mi\u1ec1n B\u1eafc Vi\u1ec7t Nam, Qu\u1ebf ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu \u1edf c\u00e1c t\u1ec9nh Y\u00ean B\u00e1i, L\u00e0o Cai v\u00e0 Qu\u1ea3ng Ninh. Trong nh\u1eefng n\u0103m t\u1edbi v\u00f9ng tr\u1ed3ng Qu\u1ebf ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng tr\u00ean c\u1ea3 ph\u01b0\u01a1ng di\u1ec7n quy m\u00f4 v\u00e0 di\u1ec7n t\u00edch. Tr\u01b0\u1edbc s\u1ef1 gia t\u0103ng nhanh v\u1ec1 m\u1eb7t di\u1ec7n t\u00edch n\u00ean nhi\u1ec1u v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 r\u1eebng tr\u1ed3ng Qu\u1ebf c\u1ee7a m\u1ed9t s\u1ed1 \u0111\u1ecba ph\u01b0\u01a1ng \u0111ang \u0111\u1ee9ng tr\u01b0\u1edbc nguy c\u01a1 b\u1ecb s\u00e2u b\u1ec7nh h\u1ea1i. Nguy\u00ean nh\u00e2n g\u00e2y b\u1ec7nh ch\u1ebft h\u00e9o Qu\u1ebf \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m c\u1ee7a huy\u1ec7n B\u1ea3o Th\u1eafng, huy\u1ec7n B\u1ea3o Y\u00ean, huy\u1ec7n B\u1eafc H\u00e0 v\u00e0 huy\u1ec7n V\u0103n B\u00e0n c\u1ee7a t\u1ec9nh L\u00e0o Cai do n\u1ea5m g\u00e2y b\u1ec7nh v\u00f9ng r\u1ec5 (Phytophthora cinnamomi; Pythium vexans<\/i>) g\u00e2y h\u1ea1i. \u0110\u1ec3 ph\u00f2ng tr\u1eeb c\u00e2y b\u1ecb b\u1ec7nh trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m c\u1ea7n \u00e1p d\u1ee5ng bi\u1ec7n ph\u00e1p ph\u00f2ng tr\u1eeb t\u1ed5ng h\u1ee3p nh\u01b0: ti\u00eau h\u1ee7y nh\u1eefng c\u00e2y b\u1ecb b\u1ec7nh n\u1eb7ng, s\u1eed d\u1ee5ng thu\u1ed1c h\u00f3a h\u1ecdc (Ridomil 72WP n\u1ed3ng \u0111\u1ed9 0,5-1%; Thu\u1ed1c Agrifos 400 n\u1ed3ng \u0111\u1ed9 0,5-1% v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 4 l\u00edt\/100m2<\/sup>) phun t\u1eeb 2 \u0111\u1ebfn 3 l\u1ea7n m\u1ed7i l\u1ea7n c\u00e1ch nhau t\u1eeb 10 \u0111\u1ebfn 15 ng\u00e0y. Khi \u0111\u00f3ng b\u1ea7u gieo \u01b0\u01a1m c\u00e2y con c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t s\u1ed1 ch\u1ebf ph\u1ea9m sinh h\u1ecdc: Trichoderma <\/i>ho\u1eb7c ch\u1ebf ph\u1ea9m sinh h\u1ecdc kh\u00e1c c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ed1i kh\u00e1ng v\u1edbi n\u1ea5m g\u00e2y b\u1ec7nh v\u00f9ng r\u1ec5 \u0111\u1ec3 h\u1ea1n ch\u1ebf b\u1ec7nh h\u1ea1i. Tr\u01b0\u1edbc khi gieo \u01b0\u01a1m c\u1ea7n d\u1ecdn v\u1ec7 sinh v\u01b0\u1eddn \u01b0\u01a1m, l\u00ean lu\u1ed1ng tho\u00e1t n\u01b0\u1edbc, tr\u00e1nh \u0111\u1ec3 lu\u1ed1ng b\u1ea7u b\u1ecb ng\u1eadp \u00fang, kh\u1eed tr\u00f9ng b\u1eb1ng thu\u1ed1c h\u00f3a h\u1ecdc ho\u1eb7c v\u00f4i b\u1ed9t. Trong qu\u00e1 tr\u00ecnh ch\u0103m s\u00f3c c\u00e2y ph\u1ea3i s\u1eed d\u1ee5ng ngu\u1ed3n n\u01b0\u1edbc t\u01b0\u1edbi s\u1ea1ch kh\u00f4ng c\u00f3 m\u1ea7m m\u1ed1ng c\u1ee7a b\u1ec7nh h\u1ea1i.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>C\u00e2y Qu\u1ebf (Cinnamomum cassia<\/i>), ch\u1ec9 s\u1ed1 b\u1ec7nh, t\u00ednh g\u00e2y b\u1ec7nh, t\u1ef7 l\u1ec7 b\u1ecb b\u1ec7nh<\/td>\n<\/tr>\n

Wilt disease of Cinnamomum cassia<\/i> in nurseries and control measures for diseases management in Lao Cai province<\/strong><\/p>\n

Cinnamomum cassia <\/i>belonging to the family Lauraceae is a multi-purpose tree. Previously, only the barks of Cinnamon trees were consumed. Currently, the stem, branches, leaves are sold at high prices. Cinnamon stalks are sold to wood processing factories for boards, flooring, furniture or pillars. The products from cinnamon can be processed into large quantities of valuable commodities. In addition, Cinnamon also contributes to the protection of the ecological environment, preserving and developing the variety of indigenous precious tree species. Currently, the Cinnamon plantation in our country reached 40,000ha, in Northern Vietnam, Cinnamon mainly distributed in the provinces of Yen Bai, Lao Cai and Quang Ninh. In the coming years, Cinnamon growing area will be expanded in both size and area. With the rapid increase, many Cinnamon nurseries and plantations in some localities are facing the risk of pests and diseases. The death of Cinnamon in the nurseries of Bao Thang district, Bao Yen district, Bac Ha district and Van Ban district of Lao Cai province was identified by Phytophthora cinnamomi<\/i> and Pythium vexans<\/i>. For control measures of diseased plants during the nursery period, it is necessary to apply integrated management such as eliminating infected plants, using fungicides (Ridomil 72WP with the concentration of 0.5-1%; Agrifos 400 with the concentration of 0.5-1% in 4 liters\/100m2<\/sup>) were sprayed 2 to 3 times at intervals of 10 to 15 days. When preparing seedlings, we can use some biological products Trichoderma<\/i> or other bio-preparations that are resistant to pathogenic fungi to control the disease. Before nursing seedlings, the nurseries need to be cleaned, drainage, avoid the flooded beds, disinfected with fungicides calcium carbonate powder. In the process of watering trees, clean water must be used.<\/p>\n

Keywords: <\/i><\/b>Cinnamomum cassia<\/i>, disease index, pathogenicity, disease incidence<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0110\u1eb6C \u0110I\u1ec2M H\u00ccNH TH\u00c1I V\u00c0 PH\u00c2N T\u00cdCH TR\u00ccNH T\u1ef0 GEN 28S – rRNA C\u1ee6A LO\u00c0I N\u1ea4M LI\u00caN QUAN \u0110\u1ebeN B\u1ec6NH TH\u1ed0I QU\u1ea2 V\u1ea2I
\nT\u1ea0I L\u1ee4C NG\u1ea0N – B\u1eaeC GIANG<\/p>\n

Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n1<\/sup>, Tr\u1ecbnh \u0110\u00ecnh Kh\u00e12<\/sup><\/p>\n

1<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng l\u00e2m Th\u00e1i Nguy\u00ean<\/p>\n

2<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Khoa h\u1ecdc Th\u00e1i Nguy\u00ean<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

C\u00e2y v\u1ea3i (Litchi chinensis<\/i> Sonn.) l\u00e0 c\u00e2y \u0103n qu\u1ea3 \u0111\u1eb7c s\u1ea3n c\u00f3 gi\u00e1 tr\u1ecb dinh d\u01b0\u1ee1ng cao, v\u1edbi h\u01b0\u01a1ng v\u1ecb th\u01a1m ngon, nhi\u1ec1u ch\u1ea5t b\u1ed5, \u0111\u01b0\u1ee3c ng\u01b0\u1eddi ti\u00eau d\u00f9ng \u01b0a chu\u1ed9ng. Tuy nhi\u00ean, qu\u1ea3 v\u1ea3i c\u00f3 th\u1ec3 b\u1ecb nhi\u1ec5m m\u1ed9t s\u1ed1 lo\u1ea1i n\u1ea5m b\u1ec7nh. Nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c lo\u00e0i n\u1ea5m g\u00e2y h\u01b0 h\u1ecfng qu\u1ea3 v\u1ea3i L\u1ee5c Ng\u1ea1n – B\u1eafc Giang. Ch\u1ee7ng n\u1ea5m k\u00fd hi\u1ec7u LNT1.1 \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n l\u1eadp t\u1eeb qu\u1ea3 v\u1ea3i v\u00e0 x\u00e1c \u0111\u1ecbnh b\u1eb1ng m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, sinh h\u1ecdc v\u00e0 ph\u00e2n t\u00edch tr\u00ecnh t\u1ef1 nucleotide 28S – rRNA. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch tr\u00ecnh t\u1ef1 \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng tr\u00ecnh t\u1ef1 ph\u00e2n \u0111o\u1ea1n gen 28S rRNA c\u1ee7a ch\u1ee7ng LNT1.1 c\u00f3 k\u00edch th\u01b0\u1edbc 606 bp v\u00e0 c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng cao v\u1edbi m\u1ed9t s\u1ed1 \u0111\u1ea1i di\u1ec7n c\u1ee7a chi n\u1ea5m Fusarium<\/i> (92,8 – 100%). Trong \u0111\u00f3, tr\u00ecnh t\u1ef1 gen t\u01b0\u01a1ng \u0111\u1ed3ng cao nh\u1ea5t v\u1edbi lo\u00e0i Fusarium graminearum <\/i>PH – 1 (M\u00e3 s\u1ed1 XR_893061). Tr\u00ecnh t\u1ef1 ph\u00e2n \u0111o\u1ea1n gen 28S rRNA c\u1ee7a ch\u1ee7ng n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd tr\u00ean GenBank v\u1edbi m\u00e3 s\u1ed1 KU521339 v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 Fusarium graminearum<\/i> <\/i>LNT1.1.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>B\u1ec7nh th\u1ed1i qu\u1ea3 v\u1ea3i, \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, Fusarium graminearum<\/i>, Gen 28S – rRNA, Litchi chinensis<\/i> Sonn<\/td>\n<\/tr>\n

Morphological characteristics and sequence analysis of 28s – rRNA gene of fungal species associated with the rot disease of litchi fruit in Luc Ngan – Bac Giang<\/strong><\/p>\n

Litchi (Litchi chinensis<\/i> Sonn.) a specialty fruit, has an appealing natural red color, high nutritional value, and pleasant flavour. However, litchi fruit can infect some pathogenic fungi. This study aimed Isolation and identification of pathogenic fungi associated with litchi fruit rot disease in Luc Ngan – Bac Giang. The fungal strain, designated as LNT1.1 was isolated from litchi fruit and identified by some morphological characteristics and analysed by 28S – rRNA sequence nucleotide. The sequencing analysis result has showed that sequence of 28S rRNA gene of the LNT1.1 strain has 606 bp and high homology to those of some representatives of the fungi genus Fusarium<\/i> (92.8 – 100%). Among them, it has the highest homology with that of Fusarium graminearum<\/i> strain PH – 1 (Accession number XR_893061). The sequence of 28S rRNA gene fragment of LNT1.1 strain was deposited in GenBank with accession number KU521339 and was named Fusarium graminearum<\/i> LNT1.1.<\/p>\n

Keywords: <\/i><\/b>Fruit rot disease of litchi, morphological characteristics, Fusarium graminearum<\/i>, 28S – rRNA gene, Litchi chinensis<\/i> Sonn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebeT H\u1ee2P \u1ea2NH V\u1ec6 TINH ALOS-2\/PALSAR-2 V\u00c0 LANDSAT-8 TRONG X\u00c1C \u0110\u1ecaNH TR\u1eee L\u01af\u1ee2NG R\u1eeaNG T\u1ef0 NHI\u00caN L\u00c1 R\u1ed8NG TH\u01af\u1edcNG XANH T\u1ea0I T\u1ec8NH \u0110\u1eaeK N\u00d4NG<\/p>\n

Ph\u1ea1m V\u0103n Du\u1ea9n1<\/sup>, Nguy\u1ec5n Thanh Ho\u00e0n2<\/sup>, Nguy\u1ec5n Tr\u1ecdng B\u00ecnh1<\/sup>, Ph\u1ea1m Ti\u1ebfn D\u0169ng3<\/sup><\/p>\n

1<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n

2<\/sup> Vi\u1ec7n \u0110\u1ecba l\u00fd, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam
\n3<\/sup> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u1ea3n \u0111\u1ed3 tr\u1eef l\u01b0\u1ee3ng r\u1eebng l\u00e0 c\u00f4ng c\u1ee5 quan tr\u1ecdng trong qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean r\u1eebng v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c ch\u00ednh s\u00e1ch v\u1ec1 r\u1eebng. S\u1eed d\u1ee5ng hai lo\u1ea1i \u1ea3nh v\u1ec7 tinh ALOS-2\/PALSAR-2 v\u00e0 LANDSAT-8, m\u00f4 h\u00ecnh s\u1ed1 \u0111\u1ed9 cao t\u1eeb \u1ea3nh ASTER (GDEM), c\u00e1c b\u1ea3n \u0111\u1ed3 s\u1eb5n c\u00f3 v\u00e0 t\u00e0i li\u1ec7u ph\u00f9 tr\u1ee3, k\u1ebft h\u1ee3p v\u1edbi s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra r\u1eebng tr\u00ean 214 \u00f4 ti\u00eau chu\u1ea9n, nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh x\u00e1c \u0111\u1ecbnh tr\u1eef l\u01b0\u1ee3ng r\u1eebng g\u1ed7 t\u1ef1 nhi\u00ean l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh (LRTX) t\u1ea1i t\u1ec9nh \u0110\u1eafk N\u00f4ng. M\u00f4 h\u00ecnh x\u00e1c \u0111\u1ecbnh tr\u1eef l\u01b0\u1ee3ng r\u1eebng t\u1ed1i \u01b0u \u0111\u01b0\u1ee3c t\u1ea1o ra v\u1edbi bi\u1ebfn \u0111\u1ea7u v\u00e0o l\u00e0 gi\u00e1 tr\u1ecb t\u00e1n x\u1ea1 ng\u01b0\u1ee3c k\u00eanh HV tr\u00ean \u1ea3nh ALOS-2\/PALSAR-2 k\u1ebft h\u1ee3p v\u1edbi gi\u00e1 tr\u1ecb k\u00eanh th\u00e0nh ph\u1ea7n ch\u00ednh th\u1ee9 nh\u1ea5t tr\u00ean \u1ea3nh LANDSAT-8 t\u1ea1i k\u00edch th\u01b0\u1edbc c\u1eeda s\u1ed5 l\u1ecdc \u1ea3nh 13 \u00d7 13 pixel. M\u00f4 h\u00ecnh c\u00f3 sai s\u1ed1 khi x\u00e1c \u0111\u1ecbnh tr\u1eef l\u01b0\u1ee3ng r\u1eebng nh\u01b0 sau: Sai s\u1ed1 trung b\u00ecnh to\u00e0n ph\u01b0\u01a1ng (RMSE = 31,8 m3<\/sup>\/ha), sai s\u1ed1 tuy\u1ec7t \u0111\u1ed1i (MAE = 25,2 m3<\/sup>\/ha), sai s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i (MAE% = 29,0%) v\u00e0 sai s\u1ed1 trung b\u00ecnh to\u00e0n ph\u01b0\u01a1ng t\u01b0\u01a1ng \u0111\u1ed1i (RMSE% = 48,0%). Hi\u1ec7n t\u1ea1i, t\u01b0 li\u1ec7u v\u1ec7 tinh ALOS-2\/PALSAR-2 lu\u00f4n c\u00f3 s\u1eb5n tr\u00ean c\u1ea3 n\u01b0\u1edbc, t\u01b0 li\u1ec7u v\u1ec7 tinh LANDSAT-8 \u0111\u01b0\u1ee3c cung c\u1ea5p th\u01b0\u1eddng xuy\u00ean v\u00e0 mi\u1ec5n ph\u00ed. Ranh gi\u1edbi ki\u1ec3u tr\u1ea1ng th\u00e1i r\u1eebng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 c\u1ea3 tr\u00ean th\u1ef1c \u0111\u1ecba v\u00e0 tr\u00ean b\u1ea3n \u0111\u1ed3 theo k\u1ebft qu\u1ea3 ki\u1ec3m k\u00ea r\u1eebng l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 \u00e1p d\u1ee5ng, nh\u00e2n r\u1ed9ng m\u00f4 h\u00ecnh x\u00e1c \u0111\u1ecbnh tr\u1eef l\u01b0\u1ee3ng cho c\u00e1c khu r\u1eebng t\u1ef1 nhi\u00ean l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh kh\u00e1c \u1edf n\u01b0\u1edbc ta v\u1edbi \u0111i\u1ec1u ki\u1ec7n t\u01b0\u01a1ng t\u1ef1.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>Alos-2\/ Palsar-2, Landsat-8, \u0110\u1eafk N\u00f4ng, ki\u1ec3m k\u00ea r\u1eebng, LRTX, tr\u1eef l\u01b0\u1ee3ng r\u1eebng<\/td>\n<\/tr>\n

A combination of Alos-2\/Palsar-2 and Landsat-8 satellite images for wood volume estimation of natural evergreen broadleaf forest in Dak Nong province<\/strong><\/p>\n

Forest wood volume map is an important tool for managing forest resources and implementing forest policies. This study has developed models for wood volume estimation of natural evergreen broadleaf forest in DakNongProvince based on a combination of ALOS-2\/PALSAR-2 satellite images, Landsat-8 satellite images, ASTER DEM (GDEM), existing maps and 214 sample plots. The optimal prediction model has been selected. The input variables for the optimal model are mean values of HV backscatter of ALOS-2\/PALSAR-2 image and the first Principal Component (PC1) from Landsat-8 image with the window size 13 \u00d7 13 pixels. The errors in wood volume estimation using the optimal model are as following: RMSE = 31.8 m3<\/sup>\/ha, absolute error (MAE) = 25.2 m3<\/sup>\/ha, relative error (MAE%) = 29.0%, relative RMSE% = 48.0%. In current, ALOS-2\/PALSAR-2 satellite image is always available for whole Vietnam. Landsat-8 images are observed frequently and provided in free of charge. The forest type boundaries have been defined both in the field and on the map according to the National forest inventory and statistics program that is as the basis for applying the model for wood volume estimation in other regions with similar conditions.<\/p>\n

Keywords: <\/i><\/b>Alos-2\/Palsar-2, Landsat-8, Nfis, Dak Nong province, natural evergreen broadleaf forest, wood volume<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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TH\u1ef0C TR\u1ea0NG V\u00c0 C\u00c1C GI\u1ea2I PH\u00c1P QU\u1ea2N L\u00dd CH\u00c1Y R\u1eeaNG
\n\u1ee8NG PH\u00d3 V\u1edaI BI\u1ebeN \u0110\u1ed4I KH\u00cd H\u1eacU T\u1ea0I T\u1ec8NH QU\u1ea2NG B\u00ccNH<\/p>\n

Nguy\u1ec5n Ph\u01b0\u01a1ng V\u0103n1,2<\/sup>, Nguy\u1ec5n V\u0103n L\u1ee3i1<\/sup>, Tr\u1ea7n Minh \u0110\u1ee9c1<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Hu\u1ebf, \u0110\u1ea1i h\u1ecdc Hu\u1ebf<\/p>\n

2<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Qu\u1ea3ng B\u00ecnh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu (B\u0110KH) hi\u1ec7n nay \u0111\u00e3 v\u00e0 \u0111ang t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn nguy c\u01a1 gia t\u0103ng s\u1ed1 v\u1ee5 ch\u00e1y v\u00e0 di\u1ec7n t\u00edch r\u1eebng c\u00f3 kh\u1ea3 n\u0103ng ch\u00e1y cao t\u1ea1i t\u1ec9nh Qu\u1ea3ng B\u00ecnh. Nghi\u00ean c\u1ee9u \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p: Ph\u00e2n t\u00edch ch\u1ecdn l\u1ecdc c\u00e1c v\u0103n b\u1ea3n li\u00ean quan \u0111\u1ebfn c\u00f4ng t\u00e1c t\u1ed5 ch\u1ee9c l\u1ef1c l\u01b0\u1ee3ng qu\u1ea3n l\u00fd ch\u00e1y r\u1eebng v\u00e0 ph\u1ecfng v\u1ea5n k\u1ebft h\u1ee3p v\u1edbi \u0111i\u1ec1u tra hi\u1ec7n tr\u1ea1ng c\u00f4ng t\u00e1c t\u1ed5 ch\u1ee9c l\u1ef1c l\u01b0\u1ee3ng \u1edf c\u00e1c \u0111\u1ecba ph\u01b0\u01a1ng trong t\u1ec9nh. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y h\u1ec7 th\u1ed1ng v\u0103n b\u1ea3n v\u1ec1 qu\u1ea3n l\u00fd ch\u00e1y \u0111\u01b0\u1ee3c c\u1ee5 th\u1ec3 ho\u00e1, c\u00f3 s\u1ef1 thay \u0111\u1ed5i c\u01a1 c\u1ea5u t\u1ed5 ch\u1ee9c trong ban ch\u1ec9 \u0111\u1ea1o t\u1eeb c\u1ea5p t\u1ec9nh \u0111\u1ebfn c\u00e1c \u0111\u1ecba ph\u01b0\u01a1ng \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng t\u00e1c qu\u1ea3n l\u00fd ch\u00e1y trong b\u1ed1i c\u1ea3nh B\u0110KH; trong \u0111\u00f3 \u0111\u00e3 x\u00e1c \u0111\u1ecbnh vai tr\u00f2, tr\u00e1ch nhi\u1ec7m ch\u00ednh c\u1ee7a c\u00e1c \u0111\u01a1n v\u1ecb c\u00f3 li\u00ean quan trong ban ch\u1ec9 \u0111\u1ea1o c\u00e1c c\u1ea5p v\u1ec1 qu\u1ea3n l\u00fd ch\u00e1y. C\u00e1c \u0111\u1ecba ph\u01b0\u01a1ng \u0111\u00e3 th\u00e0nh l\u1eadp \u0111\u01b0\u1ee3c 161 ban ch\u1ec9 \u0111\u1ea1o qu\u1ea3n l\u00fd ch\u00e1y r\u1eebng v\u1edbi 2.588 ng\u01b0\u1eddi, 918 t\u1ed5 \u0111\u1ed9i PCCCR v\u1edbi 8.753 ng\u01b0\u1eddi \u0111\u1ec3 ph\u1ee5c v\u1ee5 c\u00f4ng t\u00e1c ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y r\u1eebng. C\u00e1c gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t bao g\u1ed3m: Chuy\u1ec3n \u0111\u1ed5i c\u01a1 c\u1ea5u c\u00e2y tr\u1ed3ng\/tr\u1ed3ng r\u1eebng v\u00e0 t\u00e1i t\u1ea1o r\u1eebng; X\u00e2y d\u1ef1ng ch\u01b0\u01a1ng tr\u00ecnh ph\u00f2ng ch\u1ed1ng ch\u00e1y r\u1eebng tr\u00ean c\u00e1c v\u00f9ng kh\u00e1c nhau; X\u00e2y d\u1ef1ng ch\u1ec9 s\u1ed1 nguy c\u01a1 ch\u00e1y r\u1eebng v\u00e0 c\u1ea3nh b\u00e1o ch\u00e1y r\u1eebng cho c\u00e1c v\u00f9ng sinh th\u00e1i; T\u0103ng c\u01b0\u1eddng nh\u1eadn th\u1ee9c c\u1ed9ng \u0111\u1ed3ng v\u1ec1 qu\u1ea3n l\u00fd ch\u00e1y r\u1eebng; X\u00e2y d\u1ef1ng l\u1ef1c l\u01b0\u1ee3ng n\u00f2ng c\u1ed1t qu\u1ea3n l\u00fd ch\u00e1y r\u1eebng; N\u00e2ng cao tr\u00ecnh \u0111\u1ed9 chuy\u00ean m\u00f4n, nghi\u1ec7p v\u1ee5 qu\u1ea3n l\u00fd ch\u00e1y r\u1eebng, \u0111\u1ea7u t\u01b0 trang thi\u1ebft b\u1ecb v\u00e0 ch\u1ebf \u0111\u1ed9 ch\u00ednh s\u00e1ch trong c\u00f4ng t\u00e1c qu\u1ea3n l\u00fd ch\u00e1y r\u1eebng.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>Bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu, ch\u00e1y r\u1eebng, qu\u1ea3n l\u00fd ch\u00e1y r\u1eebng, t\u1ed5 ch\u1ee9c l\u1ef1c l\u01b0\u1ee3ng, t\u1ec9nh Qu\u1ea3ng B\u00ecnh<\/td>\n<\/tr>\n

Situation and measures to forest fire management for climate change adaptation in Quang Binh province<\/strong><\/p>\n

Climate change could cause wildfires to increase and nearly double the area hit by forest fires\u00a0in Quang Binh province in the future. The study has used the following methods: selective analysis of documents related to the organization of forest fire management forces, and interviews combined with the assessement on the current situation of force organization at the units in the province. The results of the study show that the system of forest fire management documents has been concretized with changes of the organizational structure of the steering committee from the provincial level to the lower levels in accordance with the management of firein the context of climate change. 161 fire management committees with 2,588 people were formed. There are 918 teams of fire prevention and firefighting with 8,753 people to serve fire prevention and firefighting. The proposed solutions are: Restructuring of plantation\/reforestation and regeneration; Developing programs of forest fire prevention for different areas; Developing indicators of forest fire risk and fire forecast for ecological areas; Raising community\u2019s awareness on forest fire management; Forming the core forceof forest fire management; Improving professional knowledge and skills of fire management, investing equipment and proposing suitable policies related to forest fire management.<\/p>\n

Keywords: <\/i><\/b>Climate change, forest fire, forest fire management, resource organisation, Quang Binh province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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KH\u1ea2 N\u0102NG B\u1ea2O V\u1ec6 M\u00c0U S\u1eaeC G\u1ed6 C\u1ee6A S\u01a0N PU CH\u1ee8A V\u1eacT LI\u1ec6U NANO TiO2<\/sub>, ZnO V\u00c0 NANOCLAY HYDROPHILIC<\/p>\n

B\u00f9i V\u0103n \u00c1i, Nguy\u1ec5n Th\u1ecb H\u1eb1ng, Ho\u00e0ng Trung Hi\u1ebfu, Ho\u00e0ng Th\u1ecb T\u00e1m, B\u00f9i Th\u1ecb Th\u1ee7y<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

G\u1ed7 khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf \u0111i\u1ec1u ki\u1ec7n ngo\u00e0i tr\u1eddi ch\u1ecbu t\u00e1c \u0111\u1ed9ng r\u1ea5t l\u1edbn c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 th\u1eddi ti\u1ebft nh\u01b0 \u00e1nh s\u00e1ng, nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m, gi\u00f3… l\u00e0m \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n c\u1ee7a g\u1ed7 \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1ea3nh h\u01b0\u1edfng t\u1edbi m\u00e0u s\u1eafc c\u1ee7a g\u1ed7. C\u00e1c lo\u1ea1i ch\u1ea5t ph\u1ee7 nh\u01b0 s\u01a1n, vecni, d\u1ea7u nh\u1ef1a… \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ee7 l\u00ean b\u1ec1 m\u1eb7t g\u1ed7 \u0111\u1ec3 h\u1ea1n ch\u1ebf t\u00e1c \u0111\u1ed9ng b\u1ea5t l\u1ee3i c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 t\u1ef1 nhi\u00ean. S\u01a1n PU \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u nano: TiO2<\/sub>, ZnO v\u00e0 Clay hydrophilic \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng c\u1ea3i thi\u1ec7n m\u00e0u s\u1eafc g\u1ed7 B\u1ed3 \u0111\u1ec1 (Styrax tonkinensis<\/i>\u00a0(Pierre) Craib. ex Hardw) v\u00e0 g\u1ed7 Keo Lai (Acacia mangium<\/i> \u00b4 Acacia auriculiformis<\/i>) so v\u1edbi s\u01a1n PU th\u00f4ng d\u1ee5ng. C\u00e1c c\u00f4ng th\u1ee9c s\u01a1n PU ph\u00e2n t\u00e1n nano TiO2<\/sub> (<100nm) 0,1%, nano TiO2<\/sub> (21nm) 0,1%, nano ZnO 0,1% v\u00e0 nanoclay hydrophilic 0,1% \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0m gia t\u0103ng \u0111\u00e1ng k\u1ec3 hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 m\u00e0u s\u1eafc cho g\u1ed7. C\u00e1c m\u1eabu g\u1ed7 sau khi \u0111\u01b0\u1ee3c s\u01a1n ph\u1ee7 v\u00e0 \u0111\u1eb7t tr\u00ean gi\u00e1 ph\u01a1i \u1edf \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean trong v\u00f2ng 12 th\u00e1ng, \u0111\u1ecbnh k\u1ef3 \u0111o \u0111\u1ea1c, l\u1ea5y s\u1ed1 li\u1ec7u. T\u1ef7 l\u1ec7 thay \u0111\u1ed5i m\u00e0u s\u1eafc \u0394EH<\/sub> (%) c\u1ee7a c\u1ea3 g\u1ed7 B\u1ed3 \u0111\u1ec1 v\u00e0 g\u1ed7 keo lai \u0111\u00e3 \u0111\u01b0\u1ee3c s\u01a1n ph\u1ee7 b\u1eb1ng PU ch\u1ee9a v\u1eadt li\u1ec7u nano \u0111\u1ec1u nh\u1ecf h\u01a1n 12%, m\u1eabu s\u01a1n b\u1eb1ng PU th\u00f4ng th\u01b0\u1eddng \u0111\u1ea1t 18%, so v\u1edbi m\u1eabu \u0111\u1ed1i ch\u1ee9ng kh\u00f4ng ph\u1ee7 m\u1eb7t \u0111\u1ea1t tr\u00ean 30%. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, PU bi\u1ebfn t\u00ednh b\u1edfi nano c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn m\u00e0u cho g\u1ed7.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>S\u01a1n PU, b\u1ea3o v\u1ec7 m\u00e0u s\u1eafc, v\u1eadt li\u1ec7u nano<\/td>\n<\/tr>\n

Color protection capability of PU paint enhanced with dispersed nano particles of TiO2<\/sub>, SiO2<\/sub>, ZnO, Nanoclay hydrophilic\u00a0<\/strong><\/p>\n

Wood used in outdoor conditions is extremely influenced by environmental factors such as light, temperature, humidity, wind and so on. These processes, at the same time are causing greatly effect on the durability of the wood, especially on the color of wood. Therefore, coating materials such as paints, varnishes, resinous oils… are employed on the surface of wood in order to reduce these adverse effects. In this study, polyureathane (PU) paint reinforcement with nano particles (TiO2, SiO2, ZnO and nanoclay) were investigated on Styrax tonkinensis<\/i> (Pierre) Craib. ex Hardw and Acacia hybrid<\/i> wood. All samples were then exposed under natural environmental condition in 12 months. The results of this study were compared to those of common PU paint. It is indicated that with the use of 0.1% nano TiO2<\/sub> (<100nm), 0.1% nano TiO2<\/sub> (21nm), 0.1% nano ZnO and 0.1% nano clay could significantly increase wood color protection, the discoloration of both wood species coated with nano modified PU were less than 12%, while ordinary PU treated wood was 18%. This value of control samples was was 30%. From above indication, it can be concluded that the reinforcement of PU paint with nano particles can significant reduce discoloration of wood.<\/p>\n

Keywords: <\/i><\/b>PU paint, color protection, nano particles<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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X\u1eec L\u00dd T\u1ea8Y TR\u1eaeNG V\u00c1N B\u00d3C G\u1ed6 KEO TAI T\u01af\u1ee2NG V\u00c0 KEO LAI<\/p>\n

Nguy\u1ec5n Quang Trung, Nguy\u1ec5n th\u1ecb Ph\u01b0\u1ee3ng, H\u00e0 Ti\u1ebfn M\u1ea1nh, Ph\u1ea1m Th\u1ecb Thanh Mi\u1ec1n<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

G\u1ed7 Keo tai t\u01b0\u1ee3ng (Acacia mangium<\/i>) v\u00e0 g\u1ed7 keo lai (Acacia mangium<\/i> \u00b4 Acacia auriculifomis<\/i>) l\u00e0 nguy\u00ean li\u1ec7u ch\u1ee7 y\u1ebfu trong s\u1ea3n xu\u1ea5t v\u00e1n b\u00f3c hi\u1ec7n nay \u1edf Vi\u1ec7t Nam. Do \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u t\u1ea1o, g\u1ed7 keo c\u00f3 ph\u1ea7n g\u1ed7 d\u00e1c v\u00e0 g\u1ed7 l\u00f5i ph\u00e2n bi\u1ec7t (c\u1ea3 v\u1ec1 m\u00e0u s\u1eafc v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch). \u0110\u1eb7c \u0111i\u1ec3m n\u00e0y \u0111\u00e3 h\u1ea1n ch\u1ebf \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u00e1n b\u00f3c s\u1eed d\u1ee5ng cho s\u1ea3n xu\u1ea5t v\u00e1n d\u00e1n v\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 s\u1ea3n ph\u1ea9m g\u1ed7 \u00e9p kh\u1ed1i. Nghi\u00ean c\u1ee9u t\u1ea9y tr\u1eafng v\u00e1n b\u00f3c g\u1ed7 keo nh\u1eb1m l\u00e0m \u0111\u1ed3ng nh\u1ea5t v\u1ec1 m\u00e0u s\u1eafc gi\u1eefa hai ph\u1ea7n d\u00e1c v\u00e0 l\u00f5i c\u1ee7a v\u00e1n b\u00f3c b\u1eb1ng h\u00f3a ch\u1ea5t (H2<\/sub>O2<\/sub>) \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n. Th\u1eddi gian x\u1eed l\u00fd v\u00e0 n\u1ed3ng \u0111\u1ed9 ho\u00e1 ch\u1ea5t c\u00f3 \u1ea3nh h\u01b0\u1edbng \u0111\u1ebfn m\u00e0u s\u1eafc g\u1ed7 sau t\u1ea9y tr\u1eafng. Khi th\u1eddi gian x\u1eed l\u00fd v\u00e0 n\u1ed3ng \u0111\u1ed9 h\u00f3a ch\u1ea5t t\u0103ng th\u00ec m\u1ee9c \u0111\u1ed9 t\u1ea9y tr\u1eafng g\u1ed7 t\u0103ng l\u00ean. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c th\u1eddi gian x\u1eed l\u00fd t\u1ed1i thi\u1ec3u t\u1ea1i c\u00e1c c\u1ea5p n\u1ed3ng \u0111\u1ed9 kh\u00e1c nhau \u0111\u1ec3 \u0111\u1ed3ng nh\u1ea5t m\u00e0u s\u1eafc gi\u1eefa hai ph\u1ea7n g\u1ed7 d\u00e1c v\u00e0 g\u1ed7 l\u00f5i c\u1ee7a t\u1ea5m v\u00e1n b\u00f3c; c\u1ee5 th\u1ec3 \u1edf n\u1ed3ng \u0111\u1ed9 (H2<\/sub>O2<\/sub>) 20%, th\u1eddi gian x\u1eed l\u00fd l\u00e0 3h; \u1edf n\u1ed3ng \u0111\u1ed9 (H2<\/sub>O2<\/sub>) – 25%, th\u1eddi gian x\u1eed l\u00fd 2h v\u00e0 \u1edf n\u1ed3ng \u0111\u1ed9 (H2<\/sub>O2<\/sub>) – 30%, th\u1eddi gian x\u1eed l\u00fd l\u00e0 1h. \u0110\u00e2y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 l\u1ef1a ch\u1ecdn th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u00f9 h\u1ee3p khi c\u1ea7n x\u1eed l\u00fd \u0111\u1ed3ng m\u00e0u cho v\u00e1n b\u00f3c g\u1ed7 Keo Tai t\u01b0\u1ee3ng v\u00e0 keo lai.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>T\u1ea9y tr\u1eafng g\u1ed7 keo, v\u00e1n b\u00f3c g\u1ed7 keo<\/td>\n<\/tr>\n

Bleaching peeled veneer of acacia wood<\/strong><\/p>\n

Acacia mangium<\/i> and Acacia hybrid (Acacia mangium<\/i> \u00b4 Acacia auriculifomis<\/i>) are the main raw materials being used in the peeling veneer production industry in Vietnam. Due to its structural characteristics, acacia wood has the quite difference between the heart wood and sap wood (both in colour and density of wood); The difference of colour, some what limited to the quality of veneer product to be used for plywood and multilaminar products manufacturing. Study on bleaching of peeled veneer of Acacia wood for the homogeneous coloration between the two parts of heart wood and sap wood will increase the value and usability of the acacia timber in the production of multilaminar products. The treatment results show that the treatment time and chemical concentration of (H2<\/sub>O2<\/sub>) have a great influence on the degree of bleaching. The result of bleaching will be better if the veneer is treated in the condition of chemical liquid having concentration (or solid content) is higher or the treated time to be kept longer. The results also indicated that the minimum time at different chemical concentration for the homogeneous coloration between the two parts of heart wood and sap wood; Concentration of (H2<\/sub>O2<\/sub>) at 20%, the minimum time is 3 hours; Concentration of (H2<\/sub>O2<\/sub>) at 25%, the minimum time is 2 hours and at the Concentration of (H2<\/sub>O2<\/sub>) at 30%, the minimum time is 1 hour. This is the basis for selecting the suitable solution when it is needed to bleach colour or for the homogeneous coloration between the heart wood and sap wood of veneer as well as before veneer colouring.<\/p>\n

Keywords: <\/i><\/b>Bleaching peeled veneer of Acacia Wood; peeled veneer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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M\u1ed8T S\u1ed0 K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U S\u1ea4Y G\u1ed6 C\u00c1NG L\u00d2
\n(Betula alnoides<\/i> <\/i>Buch. Ham)<\/p>\n

\u0110\u1ed7 Th\u1ecb Ho\u00e0i Thanh, H\u00e0 Ti\u1ebfn M\u1ea1nh<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

S\u1ea5y l\u00e0 kh\u00e2u quan tr\u1ecdng v\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu trong ch\u1ebf bi\u1ebfn g\u1ed7, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi lo\u00e0i sinh tr\u01b0\u1edfng nhanh nh\u01b0 g\u1ed7 C\u00e1ng l\u00f2. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh ch\u1ebf \u0111\u1ed9 s\u1ea5y ph\u00f9 h\u1ee3p cho g\u1ed7 C\u00e1ng l\u00f2 (Betula alnoides<\/i> <\/i>Buch. Ham), lo\u00e0i g\u1ed7 sinh tr\u01b0\u1edfng nhanh, t\u1ed3n t\u1ea1i n\u1ed9i \u1ee9ng su\u1ea5t l\u1edbn, d\u1ec5 b\u1ecb n\u1ee9t v\u1ee1. Khi s\u1ea5y g\u1ed7 C\u00e1ng l\u00f2 \u1edf ch\u1ebf \u0111\u1ed9 c\u1ee9ng, nhi\u1ec7t \u0111\u1ed9 60 – 80 o<\/sup>C, m\u1ee9c \u0111\u1ed9 n\u1ee9t v\u1ee1 tr\u00ean thanh g\u1ed7 s\u1ea5y l\u00e0 r\u1ea5t cao (3,44%), cao t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi g\u1ed7 H\u00f4ng (Paulownia<\/i>) v\u00e0 g\u1ea7n b\u1eb1ng g\u1ed7 B\u1ea1ch \u0111\u00e0n (Eucalyptus<\/i>). \u1ede hai ch\u1ebf \u0111\u1ed9 s\u1ea5y kh\u00e1c, 40 – 60o<\/sup>C v\u00e0 50 – 70o<\/sup>C, m\u1ee9c \u0111\u1ed9 n\u1ee9t v\u1ee1 g\u1ed7 gi\u1ea3m r\u00f5 r\u1ec7t, l\u1ea7n l\u01b0\u1ee3t l\u00e0 1,24% v\u00e0 1,44%. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u0169ng cho th\u1ea5y, m\u1ee9c \u0111\u1ed9 cong v\u00eanh khi s\u1ea5y c\u1ee7a g\u1ed7 C\u00e1ng l\u00f2 l\u00e0 th\u1ea5p v\u00e0 kh\u00f4ng ch\u00eanh l\u1ec7ch nhau nhi\u1ec1u \u1edf c\u1ea3 ba ch\u1ebf \u0111\u1ed9 s\u1ea5y. Ch\u1ebf \u0111\u1ed9 50 – 70o<\/sup>C cho th\u1eddi gian s\u1ea5y r\u00fat ng\u1eafn 76 gi\u1edd so v\u1edbi ch\u1ebf \u0111\u1ed9 40 – 60o<\/sup>C, g\u1ed7 s\u1ea5y \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t n\u00ean \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u0111\u1ec3 \u0111\u1ec1 xu\u1ea5t quy tr\u00ecnh s\u1ea5y h\u1ee3p l\u00fd cho g\u1ed7 C\u00e1ng l\u00f2.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>Ch\u1ebf \u0111\u1ed9 s\u1ea5y, g\u1ed7 C\u00e1ng l\u00f2, quy tr\u00ecnh s\u1ea5y g\u1ed7 x\u1ebb<\/td>\n<\/tr>\n

Study on drying technology of Betula alnoides<\/i> Buch. Ham<\/strong><\/p>\n

Wood drying is an important stage the manufacturing process, especially for the fast – growing species like Betula alnoides <\/i>Buch. Ham. This study investigated appropriate drying technology applied for Betula alnoides<\/i> Buch. Ham wood, which is fast – growing tree with high internal stress and potential wood – drying defects. The result showed that the percentage of wood checks and splits is rather high (3.44%) at drying temperature of 60 – 80o<\/sup>C. This value is equivalent to Paulownia wood and Eucalyptus wood. However, this value decreased significantly to 1.24% and 1.44% at drying temperature of 40 – 60o<\/sup>C and 50 – 70o<\/sup>C, respectively. The results also revealed that the degree of wood warping was similar in all three drying classes. The drying time of the Betula alnoides<\/i> Buch. Ham wood at 50 – 70o<\/sup>C was 76 hours, shorter than that at 40 – 60o<\/sup>C. This drying procedure can be practically applied for dying of Betula alnoides<\/i> Buch. Ham wood.<\/p>\n

Keywords: <\/i><\/b>Betula alnoides<\/i> Buch. Ham, drying schedule, wood drying process<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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 <\/p>\n","protected":false},"excerpt":{"rendered":"

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 4 – 2017 \u00a0 1 \u0110a d\u1ea1ng h\u1ecd H\u1ed3 ti\u00eau (Piperaceae) \u1edf V\u01b0\u1eddn Qu\u1ed1c gia B\u1ebfn En, Thanh H\u00f3a \u0110\u1eadu B\u00e1 Th\u00ecn Nghi\u00eam Th\u1ecb Giang Ho\u00e0ng V\u0103n Ch\u00ednh Diversity plants of Piperaceae from Ben En National Park, Thanh Hoa province 5 2 \u0110a d\u1ea1ng c\u00e2y thu\u1ed1c \u1edf x\u00e3 […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26,24],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1591"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=1591"}],"version-history":[{"count":5,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1591\/revisions"}],"predecessor-version":[{"id":1695,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1591\/revisions\/1695"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}