{"id":1597,"date":"2018-05-10T15:14:59","date_gmt":"2018-05-10T08:14:59","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=1597"},"modified":"2023-11-23T12:25:30","modified_gmt":"2023-11-23T05:25:30","slug":"vietnam-journal-of-forest-science-number-1-2018","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2018\/05\/vietnam-journal-of-forest-science-number-1-2018\/","title":{"rendered":"Vietnam Journal of Forest Science Number 1-2018"},"content":{"rendered":"

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

\n

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0\u00a0<\/b>1 –\u00a0<\/b>201<\/b>8<\/b><\/p>\n

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

Vai tr\u00f2 c\u1ee7a nghi\u00ean c\u1ee9u khoa h\u1ecdc v\u00e0 \u0111\u00e0o t\u1ea1o trong ph\u00e1t tri\u1ec3n l\u00e2m nghi\u1ec7p b\u1ec1n v\u1eefng<\/p>\n<\/td>\n

\n

The role of research and training in subtainable forestry development<\/p>\n<\/td>\n

\n

Ph\u1ea1m Th\u1ebf D\u0169ng<\/p>\n<\/td>\n

\n

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

2<\/td>\n\n

\u0110a d\u1ea1ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c r\u1eebng ph\u00f2ng h\u1ed9 T\u00e2n Ph\u00fa, t\u1ec9nh \u0110\u1ed3ng Nai<\/p>\n<\/td>\n

\n

Investigating diversity of medicinal plants at Tan Phu protection forest, Dong Nai province<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Th\u1ecb Ng\u1ecdc Linh Tr\u1ea7n H\u00e0 Di\u1ec5m My
\n\u0110\u1ed7 Th\u1ecb C\u1ea9m Ho\u00e0ng
\nNguy\u1ec5n Ho\u00e0ng Th\u01a1<\/p>\n<\/td>\n

\n

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

3<\/td>\n\n

\u0110\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n hai lo\u00e0i tre thu\u1ed9c chi Lu\u1ed3ng (Dendrocalamus\u00a0<\/i>Nees) \u1edf mi\u1ec1n B\u1eafc Vi\u1ec7t Nam d\u1ef1a tr\u00ean ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed ISSR<\/p>\n<\/td>\n

\n

Evaluation of genetic diversity of two bamboo species of\u00a0Dendrocalamus\u00a0<\/i>from Northern Vietnam by ISSR markers<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a
\nNguy\u1ec5n V\u0103n Th\u1ecd
\nNguy\u1ec5n Vi\u1ec5n
\nPh\u1ea1m Quang Ti\u1ebfn
\nL\u00ea Th\u1ecb Mai Linh
\nNguy\u1ec5n Th\u1ecb H\u1ed3ng Mai<\/p>\n<\/td>\n

\n

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

4<\/td>\n\n

T\u0103ng thu di truy\u1ec1n th\u1ef1c t\u1ebf v\u1ec1 sinh tr\u01b0\u1edfng, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y v\u00e0 t\u1ef7 l\u1ec7 g\u1ed7 x\u1ebb c\u1ee7a gi\u1ed1ng Keo l\u00e1 tr\u00e0m ch\u1ecdn l\u1ecdc so v\u1edbi gi\u1ed1ng \u0111\u1ea1i tr\u00e0 sau 15 n\u0103m tr\u1ed3ng t\u1ea1i Qu\u1ea3ng Tr\u1ecb<\/p>\n<\/td>\n

\n

Realized gains in growth traits, stem quality and sawlog percentage of breeded seedsources of\u00a0Acacia auriculiformis\u00a0<\/i>compared with a commercial seedlot after 15 – year planting in Quang Tri<\/p>\n<\/td>\n

\n

Ph\u00ed H\u1ed3ng H\u1ea3i<\/p>\n<\/td>\n

\n

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

5<\/td>\n\n

T\u0103ng thu di truy\u1ec1n th\u1ef1c t\u1ebf c\u1ee7a gi\u1ed1ng Keo tai t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc so v\u1edbi gi\u1ed1ng nguy\u00ean s\u1ea3n v\u00e0 \u0111\u1ea1i tr\u00e0 t\u1ea1i v\u00f9ng B\u1eafc Trung b\u1ed9 v\u00e0
\nNam Trung b\u1ed9<\/p>\n<\/td>\n

\n

Realized genetic gain of improved seed sources of\u00a0Acacia mangium<\/i>\u00a0compare
\nto natural provenances and commercial seed sources
\nin North and South Central Vietnam<\/p>\n<\/td>\n

\n

\u0110\u1ed7 H\u1eefu S\u01a1n
\nV\u00f5 \u0110\u1ea1i H\u1ea3i
\nNg\u00f4 V\u0103n Ch\u00ednh
\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean<\/p>\n<\/td>\n

\n

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

6<\/td>\n\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng hom lo\u00e0i Gi\u00e1ng h\u01b0\u01a1ng (Pterocarpus macrocarpus<\/i>\u00a0Kurz).<\/p>\n<\/td>\n

\n

The research results of\u00a0Pterocarpus macrocarpus\u00a0<\/i>Kurz cutting propagation<\/p>\n<\/td>\n

\n

Tr\u1ea7n H\u1eefu Bi\u1ec3n
\n\u00d4n Th\u1ecb Kim T\u00fa<\/p>\n<\/td>\n

\n

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

7<\/td>\n\n

T\u00e1i sinh r\u1eebng t\u1ef1 nhi\u00ean
\nsau canh t\u00e1c n\u01b0\u01a1ng r\u1eaby
\nt\u1ea1i r\u1eebng ph\u00f2ng h\u1ed9 Ia Grai, t\u1ec9nh Gia Lai<\/p>\n<\/td>\n

\n

Natural regernaration after shifting cultivation in the Ia Grai Protection Forest Area, Gia Lai province<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Thanh T\u00e2n
\nNg\u00f4 V\u0103n C\u1ea7m<\/p>\n<\/td>\n

\n

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

8<\/td>\n\n

Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac v\u00e0 t\u00e1i sinh r\u1eebng S\u1ebfn m\u1eadt tam quy, huy\u1ec7n H\u00e0 Trung, t\u1ec9nh Thanh H\u00f3a<\/p>\n<\/td>\n

\n

Research on structure and generation of\u00a0Madhuca pasquieri<\/i>\u00a0forest in Ha Trung district, Thanh Hoa province<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Ho\u00e0ng Ti\u1ec7p
\nNguy\u1ec5n Th\u1ebf \u0110\u1ea1i<\/p>\n<\/td>\n

\n

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

9<\/td>\n\n

Ph\u00e2n l\u1eadp v\u00e0 tuy\u1ec3n ch\u1ecdn vi sinh v\u1eadt n\u1ed9i sinh trong c\u00e2y Keo tai t\u01b0\u1ee3ng \u1ee9c ch\u1ebf n\u1ea5m\u00a0Ceratocystis manginecans<\/i><\/p>\n<\/td>\n

\n

Isolation and Evaluation of Endophytes from\u00a0Acacia mangium<\/i>\u00a0antagonising to\u00a0Ceratocystis manginecans<\/i><\/p>\n<\/td>\n

\n

Tr\u1ea7n Th\u1ecb Thanh T\u00e2m
\nPh\u1ea1m Quang Thu
\nNguy\u1ec5n Minh Ch\u00ed<\/p>\n<\/td>\n

\n

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

10<\/td>\n\n

B\u1ec7nh \u0111\u1ed1m l\u00e1, lo\u00e9t th\u00e2n B\u1ea1\u0323ch \u0111\u00e0n \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m<\/p>\n<\/td>\n

\n

Leaf spot and canker
\ndisease of Eucalyptus
\nin nursery stage<\/p>\n<\/td>\n

\n

N\u00f4ng Ph\u01b0\u01a1ng Nhung
\n\u0110\u1eb7ng Th\u1ecb Kim Anh
\nTr\u1ea7n Xu\u00e2n Hinh
\nNguy\u1ec5n Minh Ch\u00ed<\/p>\n<\/td>\n

\n

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

11<\/td>\n\n

Variations of soil chemical properties at different horizons under natural forest canopy in Kon Ka Kinh National Park, Gia Lai<\/p>\n<\/td>\n

\n

Bi\u1ebfn \u0111\u1ed9ng t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u1ea5t \u1edf c\u00e1c \u0111\u1ed9 s\u00e2u d\u01b0\u1edbi t\u00e1n r\u1eebng t\u1ef1 nhi\u00ean t\u1ea1i V\u01b0\u1eddn qu\u1ed1c gia Kon Ka Kinh, Gia Lai<\/p>\n<\/td>\n

\n

Nguyen Thi Bich Phuong
\nBui Manh Hung<\/p>\n<\/td>\n

\n

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

12<\/td>\n\n

Univartiate, multivariate and permutational analysis of variance methods for forestry data by using R<\/p>\n<\/td>\n

\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai \u0111\u01a1n bi\u1ebfn, \u0111a bi\u1ebfn v\u00e0 \u0111a bi\u1ebfn l\u1eb7p s\u1ed1 li\u1ec7u l\u00e2m nghi\u1ec7p b\u1eb1ng R<\/p>\n<\/td>\n

\n

Bui Manh Hung<\/p>\n<\/td>\n

\n

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

13<\/td>\n\n

\u1ee8ng d\u1ee5ng GIS trong ph\u00e2n c\u1ea5p \u0111\u1ea7u ngu\u1ed3n l\u01b0u v\u1ef1c La Ng\u00e2u, huy\u1ec7n T\u00e1nh Linh, t\u1ec9nh B\u00ecnh Thu\u1eadn<\/p>\n<\/td>\n

\n

GIS application in watershed classification in La Ngau basin, Tanh Linh district, Binh Thuan province<\/p>\n<\/td>\n

\n

Tr\u1ea7n Th\u1ecb Ngoan
\nNguy\u1ec5n V\u0103n H\u1ee3p
\nTr\u1ea7n Quang B\u1ea3o
\nV\u00f5 Minh Ho\u00e0n
\nNguy\u1ec5n H\u1eefu Th\u1ebf<\/p>\n<\/td>\n

\n

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

14<\/td>\n\n

\u0110\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng v\u00e0 hi\u1ec7u qu\u1ea3 kinh t\u1ebf m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng nguy\u00ean li\u1ec7u gi\u1ea5y t\u1ea1i C\u00f4ng ty l\u00e2m nghi\u1ec7p Xu\u00e2n \u0110\u00e0i, huy\u1ec7n T\u00e2n S\u01a1n, t\u1ec9nh Ph\u00fa Th\u1ecd<\/p>\n<\/td>\n

\n

Evaluation of growth and economic efficiency
\nof some pulp\u2011producing plants in Xuan Dai forest company, Tan Son district, Phu Tho province<\/p>\n<\/td>\n

\n

Ph\u1ea1m V\u0103n \u0110\u1ee9c
\nTr\u1ea7n Vi\u1ec7t H\u00e0<\/p>\n<\/td>\n

\n

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

15<\/td>\n\n

\u0110\u00e1nh gi\u00e1 k\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m v\u00e0 hi\u1ec7u qu\u1ea3 kinh t\u1ebf c\u1ee7a 06 d\u00f2ng keo lai t\u1ea1i
\nH\u00f2a B\u00ecnh<\/p>\n<\/td>\n

\n

Assessment of the experimental result and economic efficency of six Acacia hybrid clones
\nin Hoa Binh province<\/p>\n<\/td>\n

\n

Ho\u00e0ng Li\u00ean S\u01a1n
\nV\u0169 Duy H\u01b0ng
\nB\u00f9i Ng\u1ecdc Thu H\u00e0
\n\u0110\u00e0o Quy\u1ebft Th\u1eafng
\nNguy\u1ec5n Minh Ng\u1ecdc<\/p>\n<\/td>\n

\n

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

 <\/p>\n

 <\/p>\n

\u0110A D\u1ea0NG NGU\u1ed2N T\u00c0I NGUY\u00caN C\u00c2Y THU\u1ed0C\u00a0R\u1eeaNG PH\u00d2NG h\u1ed8 T\u00c2N PH\u00da, T\u1ec8NH \u0110\u1ed2NG NAI<\/p>\n

Nguy\u1ec5n Th\u1ecb Ng\u1ecdc Linh, Tr\u1ea7n H\u00e0 Di\u1ec5m My, \u0110\u1ed7 Th\u1ecb C\u1ea9m Ho\u00e0ng, Nguy\u1ec5n Ho\u00e0ng Th\u01a1<\/p>\n

\u0110\u1ea1i h\u1ecdc \u0110\u1ed3ng Nai<\/p>\n\n\n\n\n
\n

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

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c r\u1eebng ph\u00f2ng h\u1ed9 T\u00e2n Ph\u00fa, t\u1ec9nh \u0110\u1ed3ng Nai b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 4 ng\u00e0nh th\u1ef1c v\u1eadt v\u1edbi 368 lo\u00e0i, 262 chi v\u00e0 89 h\u1ecd c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m thu\u1ed1c. Trong \u0111\u00f3, ng\u00e0nh Th\u1ef1c v\u1eadt h\u1ea1t k\u00edn (Magnoliophyta) chi\u1ebfm \u01b0u th\u1ebf v\u1edbi 310 lo\u00e0i, 213 chi, 70 h\u1ecd; H\u1ecd c\u00f3 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i nhi\u1ec1u nh\u1ea5t l\u00e0 h\u1ecd \u0110\u1eadu (Fabaceae) c\u00f3 31 lo\u00e0i v\u00e0 chi c\u00f3 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i nhi\u1ec1u nh\u1ea5t l\u00e0 chi Sung (Ficus) v\u1edbi 10 lo\u00e0i. Th\u1ef1c v\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m thu\u1ed1c t\u1ea1i r\u1eebng ph\u00f2ng h\u1ed9 T\u00e2n Ph\u00fa th\u00ec c\u00e2y g\u1ed7 nh\u1ecf chi\u1ebfm t\u1ef7 l\u1ec7 cao nh\u1ea5t v\u1edbi 101 lo\u00e0i, c\u00e2y b\u1ee5i v\u1edbi 73 lo\u00e0i v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 c\u00e2y ph\u1ee5 sinh v\u1edbi 14 lo\u00e0i. Trong qu\u00e1 tr\u00ecnh nghi\u00ean c\u1ee9u, ch\u00fang t\u00f4i nh\u1eadn th\u1ea5y c\u00f3 r\u1ea5t nhi\u1ec1u b\u1ed9 ph\u1eadn c\u00e2y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m thu\u1ed1c, b\u1ed9 ph\u1eadn s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t l\u00e1 l\u00e0 v\u1edbi 156 lo\u00e0i, th\u00e2n v\u1edbi v\u1ecf th\u00e2n c\u00f9ng v\u1edbi r\u1ec5 v\u00e0 v\u1ecf r\u1ec5 \u0111\u1ec1u c\u00f3 153 lo\u00e0i, to\u00e0n c\u00e2y 88 lo\u00e0i, c\u00e1c b\u1ed9 ph\u1eadn c\u00f2n l\u1ea1i (hoa, qu\u1ea3-h\u1ea1t, tinh d\u1ea7u, nh\u1ef1a…) c\u00f3 s\u1ed1 l\u01b0\u1ee3ng \u00edt l\u1ea7n l\u01b0\u1ee3t l\u00e0 23 lo\u00e0i, 78 lo\u00e0i v\u00e0 53 lo\u00e0i. C\u00f3 19 nh\u00f3m c\u00e2y thu\u1ed1c c\u00f3 th\u1ec3 ch\u1eefa c\u00e1c b\u1ec7nh kh\u00e1c nhau, trong \u0111\u00f3 nh\u00f3m c\u00e2y thu\u1ed1c ch\u1eefa b\u1ec7nh v\u1ec1 m\u1ee5n nh\u1ecdt, m\u1ea9n ng\u1ee9a, s\u01b0ng vi\u00eam c\u00f3 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i nhi\u1ec1u nh\u1ea5t l\u00e0 156 lo\u00e0i; ch\u1eefa b\u1ec7nh v\u1ec1 kh\u1edbp, \u0111au nh\u1ee9c l\u00e0 106 lo\u00e0i; ch\u1eefa b\u1ec7nh \u1edf b\u1ed9 m\u00e1y ti\u00eau h\u00f3a c\u00f3 104 lo\u00e0i; ch\u1eefa b\u1ec7nh v\u1ec1 m\u1eaft, m\u0169i, h\u1ecdng l\u00e0 98 lo\u00e0i; ch\u1eefa b\u1ec7nh v\u1ec1 gan, th\u00f4ng ti\u1ec3u l\u00e0 95 lo\u00e0i; ch\u1eefa b\u1ec7nh ph\u1ee5 n\u1eef l\u00e0 91 lo\u00e0i; nh\u00f3m c\u00f3 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i th\u1ea5p nh\u1ea5t ch\u1eefa b\u1ec7nh \u0111\u00e1i \u0111\u01b0\u1eddng l\u00e0 7 lo\u00e0i. T\u1ea1i r\u1eebng ph\u00f2ng h\u1ed9 T\u00e2n Ph\u00fa ch\u00fang t\u00f4i nh\u1eadn th\u1ea5y c\u00f3 4 lo\u00e0i c\u00e2y thu\u1ed1c \u1edf d\u1ea1ng qu\u00fd hi\u1ebfm c\u00f3 nguy c\u01a1 b\u1ecb tuy\u1ec7t ch\u1ee7ng \u0111\u01b0\u1ee3c ghi trong s\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam 2007 v\u00e0 7 lo\u00e0i \u0111\u01b0\u1ee3c Hi\u1ec7p h\u1ed9i b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean Qu\u1ed1c t\u1ebf n\u0103m 2017 x\u1ebfp trong t\u00ecnh tr\u1ea1ng c\u1ef1c k\u1ef3 nguy c\u1ea5p (VU) \u0111\u1ebfn hi\u1ec3m h\u1ecda th\u1ea5p (LR).<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>C\u00e2y thu\u1ed1c, \u0111a d\u1ea1ng, r\u1eebng ph\u00f2ng h\u1ed9 T\u00e2n Ph\u00fa<\/b><\/td>\n<\/tr>\n

\n

Investigating diversity of medicinal plants at Tan Phu protection forest, Dong Nai province<\/strong><\/p>\n

In this paper, medicinal plants at Tan Phu protection forest, Dong Nai province were investigated, collected, identified and listed with 368 species, 262 genera, 89 familes of 4 divisions of the higher plants. Of those, species of the Magnoliophyta are dominant with 310 species, 213 genera, 70 familes.; Fabaceae is the richest family with 31 species and the most rich genus by Ficus with 10 species. Their life-forms are diverse including small trees with 101 species, shrubs 73 species, big trees 51 species, lianas 41 species and epiphyte plant 16 species. People use parts of medicinal plant differently as leaves are used most with 156 species, then trunk-bank with 153 species and root and root bark 153 species too, trees with 88 species and flowers are ued least with 23 species. After the inventory, 19 groups of diseases were cured by medicial plants, of which 7 groupd used with the largest number of species: skin, fever, dysentery anh diarrhea, osteoarthritis, digestion, liver, female and illness diseases, diabetes are used with the least number of species. Tan Phu protection forest has 4 threatened medicial plant species listed in the Red book of Viet Nam (2007), 7 medicial plant species in the IUCN (2011).<\/p>\n

Key words:\u00a0<\/i><\/b>Diversity, protection forest, plants, Tan Phu.<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110\u00c1NH GI\u00c1 \u0110A D\u1ea0NG DI TRUY\u1ec0N HAI LO\u00c0I TRE\u00a0THU\u1ed8C CHI LU\u1ed2NG (Dendrocalamus\u00a0<\/i>Nees)\u00a0\u1ede MI\u1ec0N B\u1eaeC VI\u1ec6T NAM D\u1ef0A TR\u00caN CH\u1ec8 TH\u1eca PH\u00c2N T\u1eec ISSR<\/p>\n

Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a1<\/sup>, Nguy\u1ec5n V\u0103n Th\u1ecd2<\/sup>, Nguy\u1ec5n Vi\u1ec5n2<\/sup>, Ph\u1ea1m Quang Ti\u1ebfn2<\/sup>,
\nL\u00ea Th\u1ecb Mai Linh3<\/sup>, Nguy\u1ec5n Th\u1ecb H\u1ed3ng Mai3<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>\u00a0Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p v\u00f9ng Trung t\u00e2m B\u1eafc b\u1ed9
\n3<\/sup>\u00a0Vi\u1ec7n Sinh th\u00e1i v\u00e0 T\u00e0i nguy\u00ean Sinh v\u1eadt, Vi\u1ec7n H\u00e0n L\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam<\/p>\n\n\n\n\n
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T\u00d3M T\u1eaeT<\/p>\n

M\u01b0\u1eddi hai (12) m\u1eabu l\u00e1 c\u1ee7a 2 lo\u00e0i (Lu\u1ed3ng\u00a0Dendrocalamus. barbatus,\u00a0<\/i>M\u1ea1y h\u1ed1c-D. sikkimensi)\u00a0<\/i>thu\u1ed9c Chi Lu\u1ed3ng (Dendrocalamus<\/i>\u00a0Nees) thu t\u1eeb 7 t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 di truy\u1ec1n c\u1ee7a lo\u00e0i v\u00e0 xu\u1ea5t x\u1ee9 b\u1eb1ng ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed ISSR nh\u1eb1m \u0111\u01b0a ra gi\u1ea3i ph\u00e1p h\u1ee3p l\u00fd cho vi\u1ec7c b\u1ea3o t\u1ed3n v\u00e0 khai th\u00e1c ph\u00e1t tri\u1ec3n ngu\u1ed3n gen c\u00e1c lo\u00e0i n\u00e0y trong th\u1eddi gian t\u1edbi. Trong 10 m\u1ed3i nghi\u00ean c\u1ee9u c\u00f3 08 m\u1ed3i cho t\u00ednh \u0111a h\u00ecnh c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n, c\u00f2n l\u1ea1i 2 m\u1ed3i ISSR 4 v\u00e0 ISSR 10 kh\u00f4ng c\u00f3 t\u00ednh \u0111a h\u00ecnh. C\u00e1c m\u1eabu nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c chia th\u00e0nh 2 nh\u00f3m l\u1edbn t\u01b0\u01a1ng \u1ee9ng v\u1edbi 2 lo\u00e0i v\u1edbi m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n 51 – 88%. Trong 6 m\u1eabu M\u1ea1y h\u1ed1c (D. sikkimensi)<\/i>\u00a0\u0111\u01b0\u1ee3c thu \u1edf 5 t\u1ec9nh, m\u1eabu M3 thu t\u1ea1i Ph\u00fa Th\u1ecd t\u00e1ch bi\u1ec7t h\u1eb3n so v\u1edbi 5 m\u1eabu c\u00f2n l\u1ea1i v\u00e0 c\u00f3 t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n t\u1eeb 64 – 69%, hai m\u1eabu M\u1ea1y h\u1ed1c m\u1ecdc t\u1ef1 nhi\u00ean M1 v\u00e0 M4 thu t\u1ea1i B\u1eafc C\u1ea1n t\u1ea1o th\u00e0nh nh\u00f3m ri\u00eang v\u00e0 t\u01b0\u01a1ng \u0111\u1ed3ng v\u1edbi c\u00e1c m\u1eabu c\u00f2n l\u1ea1i t\u1eeb 59 – 78% v\u00e0 gi\u1eefa hai m\u1eabu n\u00e0y c\u0169ng t\u01b0\u01a1ng \u0111\u1ed3ng \u0111\u1ebfn 76%. Tuy nhi\u00ean, hai m\u1eabu thu M5 v\u00e0 M6 c\u00e1ch xa h\u00e0ng tr\u0103m ki-l\u00f4-met l\u1ea1i r\u1ea5t g\u1ea7n g\u0169i nhau v\u1edbi t\u01b0\u01a1ng \u0111\u1ed3ng 86%. C\u00f2n 6 m\u1eabu Lu\u1ed3ng (D. barbatus)<\/i>\u00a0thu \u1edf 6 t\u1ec9nh, m\u1eabu L6 t\u00e1ch bi\u1ec7t h\u1eb3n v\u1edbi c\u00e1c m\u1eabu c\u00f2n l\u1ea1i v\u00e0 c\u00f3 t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n l\u00e0 55 – 71%, m\u1eabu L4 c\u0169ng kh\u00e1c bi\u1ec7t h\u1eb3n v\u1edbi c\u00e1c lo\u00e0i thu \u1edf c\u00e1c t\u1ec9nh v\u00f9ng T\u00e2y B\u1eafc v\u00e0 c\u00f3 t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n l\u00e0 55 – 77%.\u00a0<\/b>C\u00e1c m\u1eabu L1, L2, L3 v\u00e0 L5 kh\u00e1 g\u1ea7n g\u0169i v\u1ec1 m\u1eb7t di truy\u1ec1n v\u1edbi t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n t\u1eeb 71 – 88%, \u0111\u1eb7c bi\u1ec7t hai m\u1eabu L2 v\u00e0 L3 c\u00f3 t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n l\u00ean \u0111\u1ebfn 88%, \u0111i\u1ec1u n\u00e0y ch\u1ee9ng t\u1ecf Lu\u1ed3ng \u1edf 4 t\u1ec9nh v\u00f9ng T\u00e2y B\u1eafc c\u00f3 c\u00f9ng m\u1ed9t ngu\u1ed3n g\u1ed1c ho\u1eb7c quan h\u1ec7 g\u1ea7n g\u0169i v\u00e0 kh\u00e1c h\u1eb3n 2 m\u1eabu Lu\u1ed3ng c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb Thanh H\u00f3a.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>\u0110a d\u1ea1ng di truy\u1ec1n, ISSR, Lu\u1ed3ng, M\u1ea1y h\u1ed1c<\/b><\/td>\n<\/tr>\n

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Evaluation of genetic diversity of two bamboo species of\u00a0Dendrocalamus<\/i>\u00a0<\/i>from Northern Vietnam by ISSR markers<\/strong><\/p>\n

12 leaf samples of\u00a0Dendrocalamus barbatus\u00a0<\/i>and\u00a0Dendrocalamus sikkimensis\u00a0<\/i>collected from seven provenances were genetically analyzed by molecular markers (ISSR marker) in order to suggest suitable measures for genetic conservation of these two species in the future. Among ten ISSR markers used, eight of them gave polymorphic DNA bands while the other two (ISSR4 and ISSR10) did not. The samples are divided into two group belonging to two species of\u00a0Dendrocalamus\u00a0<\/i>respectively with similarities, from 51% to 88%. Among six samples of\u00a0D. sikkimensis\u00a0<\/i>collected from five provinces, one sample (M3, Phu Tho provenance) is genetically separated far from others with asimilarities, from 56% to 70%. Two samples collected natural forest of Ba Be National Park (M1, M4, Bac Can provenance) formed a different group far from the rest of samples from 22% to 29%, particularly these two sample are distinguished together with difference of 24%. However, sample M1 (Bac Can provenance) and sample M6 (Lai Chau provenance) collected at a distance of few hundred kilometers are only different to be 14%. Six samples of\u00a0D. barbatus\u00a0<\/i>collected from six provinces, sample L6 (Tho Xuan district, Thanh Hoa province) is clearly separated from others with similarities, from 55% to 70%. Sample L4 (Cau Hai, Phu Tho province, originating from Ngoc Lac district, Thanh Hoa province) is also isolated Northern West region with similarities, from 55% to 77%. Other of samples L1, L2, L3 and L5 have quite high similarities, from 71% to 88%, particular sample L2 and L3 gave high similarity of 88%. The fact is that some samples of\u00a0D. barbatus\u00a0<\/i>from four provinces in Northern West region have low genetic difference as they have same origin and differ from two samples from or origin from Thanh Hoa province.<\/p>\n

Key words:<\/i>\u00a0<\/b>Dendrocalamus barbatus, Dendrocalamus sikkimensis<\/i>, ISSR, genentic diversity<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u0102NG THU DI TRUY\u1ec0N TH\u1ef0C T\u1ebe\u00a0V\u1ec0 SINH TR\u01af\u1edeNG, CH\u1ea4T L\u01af\u1ee2NG TH\u00c2N C\u00c2Y V\u00c0 T\u1ef6 L\u1ec6 G\u1ed6 X\u1eba\u00a0C\u1ee6A GI\u1ed0NG KEO L\u00c1 TR\u00c0M CH\u1eccN L\u1eccC SO V\u1edaI GI\u1ed0NG \u0110\u1ea0I TR\u00c0 SAU 15 N\u0102M TR\u1ed2NG T\u1ea0I QU\u1ea2NG TR\u1eca<\/p>\n

Ph\u00ed H\u1ed3ng H\u1ea3i<\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
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T\u00d3M T\u1eaeT<\/p>\n

Kh\u1ea3o nghi\u1ec7m t\u0103ng thu di truy\u1ec1n Keo l\u00e1 tr\u00e0m t\u1ea1i \u0110\u00f4ng H\u00e0, Qu\u1ea3ng Tr\u1ecb \u0111\u01b0\u1ee3c tr\u1ed3ng v\u00e0o th\u00e1ng 8 n\u0103m 2002, v\u1edbi 5 c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m, l\u1eb7p l\u1ea1i 5 l\u1ea7n, 49 c\u00e2y\/\u00f4. C\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m l\u00e0 c\u00e1c l\u00f4 h\u1ea1t gi\u1ed1ng h\u1ed7n h\u1ee3p t\u1eeb c\u00e1c c\u00e2y tr\u1ed9i trong v\u01b0\u1eddn gi\u1ed1ng (SSO ch\u1ecdn l\u1ecdc), l\u00f4 h\u1ea1t h\u1ed7n h\u1ee3p \u0111\u1ea1i tr\u00e0 v\u01b0\u1eddn gi\u1ed1ng (SSO \u0111\u1ea1i tr\u00e0), l\u00f4 h\u1ea1t h\u1ed7n h\u1ee3p t\u1eeb c\u00e1c c\u00e2y tr\u1ed9i trong r\u1eebng gi\u1ed1ng (SPA ch\u1ecdn l\u1ecdc), v\u00e0 c\u00e1c l\u00f4 h\u1ea1t \u0111\u1ed1i ch\u1ee9ng l\u00e0 c\u00e1c xu\u1ea5t x\u1ee9 t\u1ef1 nhi\u00ean (Xu\u1ea5t x\u1ee9 NS) v\u00e0 l\u00f4 h\u1ea1t \u0111\u1ea1i tr\u00e0 kh\u00f4ng r\u00f5 xu\u1ea5t x\u1ee9. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 kh\u1ea3o nghi\u1ec7m \u1edf giai \u0111o\u1ea1n 15 n\u0103m tu\u1ed5i cho th\u1ea5y sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y c\u1ee7a c\u00e1c l\u00f4 h\u1ea1t gi\u1ed1ng kh\u00e1c nhau c\u01a1 b\u1ea3n c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u00e0ng, ngo\u1ea1i tr\u1eeb \u0111\u1ed9 duy tr\u00ec tr\u1ee5c th\u00e2n. L\u00f4 h\u1ea1t SSO ch\u1ecdn l\u1ecdc \u0111\u1ea1t n\u0103ng su\u1ea5t 19,6 m3<\/sup>\/ha\/n\u0103m. Trong khi sinh tr\u01b0\u1edfng c\u1ee7a l\u00f4 h\u1ea1t SPA ch\u1ecdn l\u1ecdc, SSO \u0111\u1ea1i tr\u00e0 v\u00e0 xu\u1ea5t x\u1ee9 NS l\u00e0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau, \u0111\u1ea1t n\u0103ng su\u1ea5t t\u1eeb 13,2 \u0111\u1ebfn 14,2 m3<\/sup>\/ha\/n\u0103m. Sinh tr\u01b0\u1edfng k\u00e9m nh\u1ea5t l\u00e0 l\u00f4 h\u1ea1t \u0111\u1ea1i tr\u00e0, ch\u1ec9 \u0111\u1ea1t n\u0103ng su\u1ea5t 6,2 m3<\/sup>\/ha\/n\u0103m. So v\u1edbi l\u00f4 h\u1ea1t \u0111\u1ea1i tr\u00e0, l\u00f4 h\u1ea1t SSO ch\u1ecdn l\u1ecdc c\u00f3 t\u0103ng thu di truy\u1ec1n th\u1ef1c t\u1ebf l\u00e0 18,8% v\u1ec1 sinh tr\u01b0\u1edfng chi\u1ec1u cao, 27,9% v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh, 61,7% v\u1ec1 th\u1ec3 t\u00edch th\u00e2n c\u00e2y, 20,0 – 24,8% v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y. So v\u1edbi l\u00f4 h\u1ea1t xu\u1ea5t x\u1ee9 NS cho th\u1ea5y l\u00f4 h\u1ea1t SSO ch\u1ecdn l\u1ecdc \u0111\u1ea1t t\u0103ng thu di truy\u1ec1n th\u1ef1c t\u1ebf t\u01b0\u01a1ng \u1ee9ng l\u00e0 6,0%; 16,7%, 28,4% v\u00e0 5,5 – 16,2%. C\u00e1c c\u00e2y Keo l\u00e1 tr\u00e0m t\u1eeb c\u00e1c l\u00f4 h\u1ea1t \u0111\u1ea1i tr\u00e0 \u0111\u1ec1u c\u00f3 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y gi\u1ea3m t\u1eeb 3,1 – 20,6% so v\u1edbi h\u1eadu th\u1ebf l\u00f4 h\u1ea1t xu\u1ea5t x\u1ee9 nguy\u00ean s\u1ea3n. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u0169ng kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng n\u1ebfu s\u1eed d\u1ee5ng l\u00f4 h\u1ea1t SSO ch\u1ecdn l\u1ecdc tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn s\u1ebd r\u1ea5t t\u1ed1t v\u00e0 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao sau 15 n\u0103m tr\u1ed3ng v\u00e0 \u0111\u00e1p \u1ee9ng ho\u00e0n to\u00e0n m\u1ee5c ti\u00eau c\u1ee7a \u0111\u1ec1 \u00e1n t\u00e1i c\u01a1 c\u1ea5u ng\u00e0nh l\u00e2m nghi\u1ec7p.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>Keo l\u00e1 tr\u00e0m, t\u0103ng thu di truy\u1ec1n th\u1ef1c t\u1ebf, ngu\u1ed3n h\u1ea1t gi\u1ed1ng, t\u1ef7 l\u1ec7 g\u1ed7 x\u1ebb<\/b><\/td>\n<\/tr>\n

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Realized gains in growth traits, stem quality and sawlog percentage of breeded seedsources of\u00a0Acacia auriculiformis<\/i>\u00a0compared with a commercial seedlot after 15 – year planting in Quang Tri<\/strong><\/p>\n

Genetic gain trial of\u00a0Acacia auriculiformis<\/i>\u00a0at Dong Ha, Quang Tri was planted in August 2002, with 5 different seedsources, 5 replicates, 49 trees\/plot. The different seedsources were SSO select, SPA select, SSO routine, natural provenances and commercial seedlot. At age of 15 years, the evaluation of this trial showed that growth and stem quality of different seedsources differed significantly (p < 0.05), except for stem axis persistence. SSO select performed the best seedlot, with MAI of 19.6 m3<\/sup>\/ha\/year. While the growth of SPA select, SSO routine and natural provenances were similarly, which yielded from 13.2 to 14.2 m3<\/sup>\/ha\/year. The commercial seedlot was the worst growth in the trial, only yielding 6.2 m3<\/sup>\/ha\/year. Realized gains in growth and stem quality, expressed as percent gain relative to commercial seedlot control, were 18.8% for total height, 27.9% for diameter, 61.7% of stem volume, 20.0 – 24.8% for the stem quality. Comparing the performances of natural-provenance seedlot, the SSO select had the realized gains of 6.0%; 16.7%, 28.4% and 5.5 – 16.2%, repectively. Of great concern for growers in Vietnam is the very poor performance of the commercial seedlot, which the growth and stem quality were reduced from 3.1 – 20.6%, compared to the natural-provenance seedlot. Our research results also confirmed that if using SSO select to cultivate sawn-log plantations will be good achivement and highly effective after 15 – year planting and meet requirement of the program for restructuring forestry sector.<\/p>\n

Key words:\u00a0<\/i><\/b>Acacia auriculiformis<\/i>, realized gain, seedsources; sawnlog percentage<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u0102NG THU DI TRUY\u1ec0N TH\u1ef0C T\u1ebe C\u1ee6A GI\u1ed0NG KEO TAI T\u01af\u1ee2NG \u0110\u01af\u1ee2C CH\u1eccN L\u1eccC SO V\u1edaI GI\u1ed0NG NGUY\u00caN S\u1ea2N V\u00c0 \u0110\u1ea0I TR\u00c0 T\u1ea0I V\u00d9NG B\u1eaeC TRUNG B\u1ed8 V\u00c0 NAM TRUNG B\u1ed8<\/p>\n

\u0110\u1ed7 H\u1eefu S\u01a1n1<\/sup>, V\u00f5 \u0110\u1ea1i H\u1ea3i2<\/sup>, Ng\u00f4 V\u0103n Ch\u00ednh1<\/sup>, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean1<\/sup><\/p>\n

1\u00a0<\/sup>Vi\u1ec7n nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 CNSH L\u00e2m nghi\u1ec7p
\n2\u00a0<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
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T\u00d3M T\u1eaeT<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 t\u0103ng thu di truy\u1ec1n t\u1eeb ngu\u1ed3n h\u1ea1t gi\u1ed1ng \u1edf c\u00e1c v\u01b0\u1eddn gi\u1ed1ng v\u00f4 t\u00ednh, v\u01b0\u1eddn gi\u1ed1ng h\u1eefu t\u00ednh Keo tai t\u01b0\u1ee3ng so v\u1edbi h\u1ea1t nguy\u00ean s\u1ea3n v\u00e0 h\u1ea1t \u0111\u1ea1i tr\u00e0. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean hai kh\u1ea3o nghi\u1ec7m m\u1edf r\u1ed9ng t\u1ea1i v\u00f9ng B\u1eafc Trung b\u1ed9 (\u0110\u00f4ng H\u00e0, Qu\u1ea3ng Tr\u1ecb) v\u00e0 Nam Trung b\u1ed9 (Quy Nh\u01a1n, B\u00ecnh \u0110\u1ecbnh) x\u00e2y d\u1ef1ng th\u00e1ng 12 n\u0103m 2014 v\u1edbi 8 ngu\u1ed3n h\u1ea1t gi\u1ed1ng Keo tai t\u01b0\u1ee3ng t\u1eeb c\u00e1c v\u01b0\u1eddn gi\u1ed1ng, r\u1eebng gi\u1ed1ng, xu\u1ea5t x\u1ee9 nguy\u00ean s\u1ea3n v\u00e0 h\u1ea1t \u0111\u1ea1i tr\u00e0. Sau 30 \u0111\u1ebfn 32 th\u00e1ng tu\u1ed5i, c\u00e1c kh\u1ea3o nghi\u1ec7m \u0111\u1ec1u c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng r\u1ea5t cao t\u1eeb 81,5 – 95,5%, v\u00e0 c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 sinh tr\u01b0\u1edfng gi\u1eefa c\u00e1c l\u00f4 h\u1ea1t, trong \u0111\u00f3 c\u00e1c l\u00f4 h\u1ea1t t\u1eeb v\u01b0\u1eddn gi\u1ed1ng c\u00f3 sinh tr\u01b0\u1edfng v\u01b0\u1ee3t tr\u1ed9i. M\u1eb7c d\u00f9 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ed1c \u0111\u1ed9 sinh tr\u01b0\u1edfng nh\u01b0ng kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 th\u1ee9 t\u1ef1 x\u1ebfp h\u1ea1ng v\u1ec1 sinh tr\u01b0\u1edfng gi\u1eefa c\u00e1c l\u00f4 h\u1ea1t trong hai kh\u1ea3o nghi\u1ec7m. L\u00f4 h\u1ea1t t\u1eeb c\u00e1c v\u01b0\u1eddn gi\u1ed1ng t\u1ea1i B\u00e0u B\u00e0ng, B\u00ecnh D\u01b0\u01a1ng v\u00e0 Ba V\u00ec, H\u00e0 N\u1ed9i c\u00f3 sinh tr\u01b0\u1edfng v\u01b0\u1ee3t tr\u1ed9i v\u1edbi n\u0103ng su\u1ea5t \u0111\u1ea1t t\u1eeb 17 \u0111\u1ebfn 22 m3<\/sup>\/ha\/n\u0103m, v\u01b0\u1ee3t t\u1eeb 10 – 69% so v\u1edbi l\u00f4 h\u1ea1t t\u1eeb xu\u1ea5t x\u1ee9 nguy\u00ean s\u1ea3n v\u00e0 t\u1eeb 140 – 218% so v\u1edbi h\u1ea1t \u0111\u1ea1i tr\u00e0; ti\u1ebfp theo l\u00e0 c\u00e1c l\u00f4 h\u1ea1t xu\u1ea5t x\u1ee9 nguy\u00ean s\u1ea3n t\u1eeb Papua New Guinea (Balimo v\u00e0 Oriomo) v\u1edbi n\u0103ng su\u1ea5t \u0111\u1ea1t t\u1eeb 10 \u0111\u1ebfn 16 m3<\/sup>\/ha\/n\u0103m; c\u00e1c l\u00f4 h\u1ea1t t\u1eeb c\u00e1c r\u1eebng gi\u1ed1ng chuy\u1ec3n h\u00f3a \u1edf H\u00e0m Y\u00ean, Tuy\u00ean Quang v\u00e0 Long Th\u00e0nh, \u0110\u1ed3ng Nai v\u00e0 l\u00f4 h\u1ea1t \u0111\u1ea1i tr\u00e0 c\u00f3 sinh tr\u01b0\u1edfng k\u00e9m nh\u1ea5t v\u1edbi n\u0103ng su\u1ea5t ch\u1ec9 \u0111\u1ea1t t\u1eeb 6,7 \u0111\u1ebfn 7,5 m3<\/sup>\/ha\/n\u0103m. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u kh\u1eb3ng \u0111\u1ecbnh l\u1ee3i \u00edch khi s\u1eed d\u1ee5ng h\u1ea1t gi\u1ed1ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n t\u1eeb c\u00e1c v\u01b0\u1eddn gi\u1ed1ng \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn trong tr\u1ed3ng r\u1eebng.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>Keo tai t\u01b0\u1ee3ng, r\u1eebng gi\u1ed1ng chuy\u1ec3n h\u00f3a, t\u0103ng thu\u00a0di truy\u1ec1n, v\u01b0\u1eddn gi\u1ed1ng, xu\u1ea5t x\u1ee9 nguy\u00ean s\u1ea3n<\/b><\/td>\n<\/tr>\n

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Realized genetic gain of improved seed sources of\u00a0Acacia mangium<\/i>\u00a0compare to natural provenances and commercial seed sources in North and South Central Vietnam<\/strong><\/p>\n

Objectives of the study were to evaluate genetic gain in growth rate of seedlots derived from clonal seed orchards, seedling seed orchards, seed production areas in comparison with seed from natural provenances and commercial seedlots. The study was performed in two genetic gain trials of\u00a0Acacia mangium<\/i>\u00a0at North Central (Dong Ha, Quang Tri) and South Central (Quy Nhon, Binh Dinh) planted in 2014 which include 8 different\u00a0Acacia mangium<\/i>\u00a0seed sources collected from seed orchard, seed production area, best natural provenances and commercial seedlot. At age of 30 – 32 months, the high survival (from 81.5 to 95.5%) and significant difference in growth rate between seed sources were observed in both sites. Although growth rate was different between the two sites, stem volume ranking of seed sources was similar between sites. The seed collected from Bau Bang clonal seed orchard and Ba Vi seedling seed orchard were the best performers (17 – 22 m3<\/sup>\/ha\/year), followed by natural provenances from Papua New Guinea (10 – 16 m3<\/sup>\/ha\/year). Seed from plantation-converted seed production areas at Long Thanh and Ham Yen, and commercial seedlots were worst at both sites (6.7 – 7.5 m3<\/sup>\/ha\/year). Results from this study showed high benefit of using improved seed from well established seed orchards in commercial plantations.<\/p>\n

Key words:\u00a0<\/i><\/b>Acacia mangium<\/i>, genetic gain trial, natural provenances, plantation-converted seed production areas, seed orchard<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u00a0<\/b><\/a><\/p>\n

K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG V\u00d4 T\u00cdNH B\u1eb0NG HOM LO\u00c0I GI\u00c1NG H\u01af\u01a0NG (Pterocarpus macrocarpus\u00a0<\/i>Kurz)<\/p>\n

\u00a0Tr\u1ea7n H\u1eefu Bi\u1ec3n1<\/sup>, \u00d4n Th\u1ecb Kim T\u00fa2<\/sup><\/p>\n

1<\/sup>Trung t\u00e2m Nghi\u00ean c\u1ee9u th\u1ef1c nghi\u1ec7m L\u00e2m nghi\u1ec7p \u0110\u00f4ng Nam b\u1ed9<\/p>\n

2<\/sup>Ph\u00e2n hi\u1ec7u Tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p.<\/p>\n\n\n\n\n
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T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng hom c\u00e0nh lo\u00e0i Gi\u00e1ng h\u01b0\u01a1ng \u0111\u00e3 cho th\u1ea5y lo\u00e0i n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng nh\u00e2n gi\u1ed1ng v\u1edbi t\u1ef7 l\u1ec7 ra r\u1ec5 cao \u0111\u1ea1t tr\u00ean 80% ngay c\u1ea3 khi kh\u00f4ng c\u1ea7n x\u1eed l\u00fd ch\u1ea5t \u0111i\u1ec1u ho\u00e0 sinh tr\u01b0\u1edfng. V\u1edbi nghi\u1ec7m th\u1ee9c x\u1eed l\u00fd ch\u1ea5t \u0111i\u1ec1u ho\u00e0 sinh tr\u01b0\u1edfng \u0111\u00e3 cho t\u1ef7 l\u1ec7 ra r\u1ec5, s\u1ed1 l\u01b0\u1ee3ng r\u1ec5\/hom, chi\u1ec1u d\u00e0i r\u1ec5\/hom, ch\u1ec9 s\u1ed1 r\u1ec5 t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3 so v\u1edbi \u0111\u1ed1i ch\u1ee9ng. Trong c\u00e1c n\u1ed3ng \u0111\u1ed9 th\u00ed nghi\u1ec7m t\u1eeb 1000 – 4000 ppm c\u1ee7a hai lo\u1ea1i ch\u1ea5t IBA, NAA th\u00ec NAA n\u1ed3ng \u0111\u1ed9 2000 – 3000 ppm c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5, s\u1ed1 l\u01b0\u1ee3ng r\u1ec5\/hom, chi\u1ec1u d\u00e0i r\u1ec5\/hom, ch\u1ec9 s\u1ed1 r\u1ec5 cao nh\u1ea5t.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>Ch\u1ea5t \u0111i\u1ec1u ho\u00e0 sinh tr\u01b0\u1edfng, Gi\u00e1ng h\u01b0\u01a1ng, nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh<\/b><\/td>\n<\/tr>\n

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The research results of\u00a0Pterocarpus macrocarpus<\/i>\u00a0Kurz cutting propagation<\/strong><\/p>\n

The research results of\u00a0Pterocarpus macrocarpus\u00a0<\/i>cutting propagation have proved that this species has potential breeding ability with high rooting rate of over 80% even without utilizing growth chemical substances. The specimen of growth chemical treatment has resulted in rooting ratio, quantity of roots per cutting, length of roots per cutting and rooting index increasing considerably compared to control treatment. Specifically, among the experimental concentrations from 1000ppm to 4000ppm of the two growth chemicals (IBA, NAA), the highest rooting proportion, amount of roots per cutting, length of roots per cutting and rooting index came to NAA level of 2000ppm-3000ppm<\/p>\n

\u00a0<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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T\u00c1I SINH R\u1eeaNG T\u1ef0 NHI\u00caN SAU CANH T\u00c1C N\u01af\u01a0NG R\u1eaaY\u00a0T\u1ea0I R\u1eeaNG PH\u00d2NG H\u1ed8 IA GRAI, T\u1ec8NH GIA LAI<\/p>\n

\u00a0Nguy\u1ec5n Thanh T\u00e2n1<\/sup>, Ng\u00f4 V\u0103n C\u1ea7m2<\/sup><\/p>\n

1\u00a0<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc T\u00e2y Nguy\u00ean,\u00a02\u00a0<\/sup>Trung t\u00e2m L\u00e2m nghi\u1ec7p Nhi\u1ec7t \u0111\u1edbi<\/p>\n\n\n\n\n
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T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m t\u00e1i sinh, ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean sau canh t\u00e1c n\u01b0\u01a1ng r\u1eaby t\u1ea1i khu v\u1ef1c r\u1eebng ph\u00f2ng h\u1ed9 (RPH) Ia Grai, bao g\u1ed3m: m\u1eadt \u0111\u1ed9, t\u1ed5 th\u00e0nh v\u00e0 ph\u00e2n b\u1ed1 c\u00e2y t\u00e1i sinh theo c\u1ea5p chi\u1ec1u cao; ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ngu\u1ed3n g\u1ed1c c\u00e2y t\u00e1i sinh v\u00e0 \u0111\u1ec1 xu\u1ea5t m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p l\u00e2m sinh ph\u1ee5c h\u1ed3i r\u1eebng sau n\u01b0\u01a1ng r\u1eaby t\u1ea1i RPH Ia Grai. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y th\u1eddi gian b\u1ecf h\u00f3a t\u0103ng l\u00ean th\u00ec s\u1ed1 lo\u00e0i thu\u1ed9c t\u1ea7ng c\u00e2y cao t\u0103ng trong khi s\u1ed1 lo\u00e0i c\u00e2y t\u00e1i sinh l\u1ea1i c\u00f3 xu h\u01b0\u1edbng gi\u1ea3m \u0111i v\u00e0 s\u1ed1 lo\u00e0i c\u00e2y g\u1ed7 ch\u1ecbu b\u00f3ng giai \u0111o\u1ea1n \u0111\u1ea7u \u0111\u1ec1u c\u00f3 xu h\u01b0\u1edbng t\u0103ng. M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh trung b\u00ecnh theo th\u1eddi gian b\u1ecf h\u00f3a < 5 n\u0103m, 5 – 10 n\u0103m, 10 – 15 n\u0103m v\u00e0 tr\u00ean 15 n\u0103m l\u1ea7n l\u01b0\u1ee3t l\u00e0 9.500, 5.000, 4.800 v\u00e0 4.200 c\u00e2y\/ha. Ph\u00e2n b\u1ed1 s\u1ed1 c\u00e2y t\u00e1i sinh theo c\u1ea5p chi\u1ec1u cao c\u00f3 xu th\u1ebf chung l\u00e0 gi\u1ea3m d\u1ea7n t\u1eeb c\u1ea5p chi\u1ec1u cao th\u1ea5p (< 1m) \u0111\u1ebfn c\u1ea5p chi\u1ec1u cao l\u1edbn (> 3m). T\u1ef7 l\u1ec7 c\u00e2y c\u00f3 ngu\u1ed3n g\u1ed1c h\u1ea1t kho\u1ea3ng 80% v\u00e0 ch\u1ed3i l\u00e0 20%. Ty\u0309 l\u1ec7 c\u00e2y ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t bi\u1ebfn \u0111\u1ed9ng t\u1eeb 10,2% \u0111\u1ebfn 26,6%; ch\u1ea5t l\u01b0\u1ee3ng trung b\u00ecnh t\u1eeb 8,1% \u0111\u1ebfn 33,3%; ch\u1ea5t l\u01b0\u1ee3ng x\u1ea5u t\u1eeb 40% \u0111\u1ebfn 73%. \u0110\u00e2y l\u00e0 c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c \u0111\u1ec1 xu\u1ea5t c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh ph\u00f9 h\u1ee3p trong ph\u1ee5c h\u1ed3i r\u1eebng sau canh t\u00e1c n\u01b0\u01a1ng r\u1eaby t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>Canh t\u00e1c n\u01b0\u01a1ng r\u1eaby, r\u1eebng ph\u00f2ng h\u1ed9, t\u00e1i sinh t\u1ef1 nhi\u00ean<\/b><\/td>\n<\/tr>\n

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Natural regernaration after shifting cultivation in the Ia Grai Protection Forest area, Gia Lai province<\/strong><\/p>\n

This article presents the study results on the forest natural regeneration after shifting cultivation at the Ia Grai Protection Forest, including: density and species composition of regeneration trees; regeneration tree distribution by height class; quality and origin of regeneration trees and proposed silvicultural measures for forest restoration after slash and burn cultivation at the Ia Grai Protection Forest. The results show that the longer fallow period, the simpler the species composition. The number of regeneration species accounted in fallow periods of less than 5 years,
\n5 – 10 years, 10 – 15 years and over 15 years were 21, 16, 15 and 13 species, respectively; The regeneration tree densities were about 9,500; 5,000; 4,800 and 4,200 trees\/ha, respectively. Tree regeneration distribution by height class tends to decrease from height class < 1m to height class > 3m. The rate of seedlings was about 80% and shoots was 20%. The rate of the good quality trees was from 10.2% to 26.6%; the average quality was from 8.1% to 33.3% and the bad quality was from 40% to 73%.<\/p>\n

Key words:\u00a0<\/i><\/b>Natural regeneration, protection forest, shifting cultivation<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

NGHI\u00caN C\u1ee8U M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U TR\u00daC\u00a0V\u00c0 T\u00c1I SINH R\u1eeaNG S\u1ebeN M\u1eacT TAM QUY, HUY\u1ec6N H\u00c0 TRUNG, T\u1ec8NH THANH H\u00d3A<\/p>\n

Nguy\u1ec5n Ho\u00e0ng Ti\u1ec7p1<\/sup>, Nguy\u1ec5n Th\u1ebf \u0110\u1ea1i2<\/sup><\/p>\n

\u00a0[1] Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n

[1] Trung t\u00e2m Nghi\u00ean c\u1ee9u \u1ee8ng d\u1ee5ng KHLN Thanh H\u00f3a<\/p>\n\n\n\n\n
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T\u00d3M T\u1eaeT<\/p>\n

S\u1ebfn m\u1eadt (Madhuca pasquieri)<\/i>\u00a0l\u00e0 c\u00e2y b\u1ea3n \u0111\u1ecba \u0111a t\u00e1c d\u1ee5ng, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, r\u1ea5t hi\u1ebfm g\u1eb7p qu\u1ea7n th\u1ec3 t\u01b0\u01a1ng \u0111\u1ed1i thu\u1ea7n lo\u00e0i trong t\u1ef1 nhi\u00ean. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u1ef1a tr\u00ean s\u1ed1 li\u1ec7u thu th\u1eadp t\u1eeb 54 \u00f4 ti\u00eau chu\u1ea9n c\u00f3 di\u1ec7n t\u00edch 1000m2<\/sup>(40 \u00b4 25m)tr\u00ean 3 tr\u1ea1ng th\u00e1i r\u1eebng: R\u1eebng S\u1ebfn m\u1eadt t\u01b0\u01a1ng \u0111\u1ed1i thu\u1ea7n lo\u00e0i, r\u1eebng S\u1ebfn m\u1eadt – Lim xanh v\u00e0 r\u1eebng Lim xanh – S\u1ebfn m\u1eadt. Trong m\u1ed7i \u00f4 ti\u00eau chu\u1ea9n b\u1ed1 tr\u00ed 5 \u00f4 d\u1ea1ng b\u1ea3n k\u00edch th\u01b0\u1edbc 25m2<\/sup>\u00a0(5 \u00b4 5m) \u0111\u1ec3 nghi\u00ean c\u1ee9u c\u00e2y t\u00e1i sinh. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y S\u1ebfn m\u1eadt l\u00e0 lo\u00e0i chi\u1ebfm \u01b0u th\u1ebf v\u1edbi t\u1ef7 l\u1ec7 t\u1ed5 th\u00e0nh kh\u00e1 cao t\u1eeb 63,7 – 68,9%. B\u00ean c\u1ea1nh \u0111\u00f3 Lim xanh l\u00e0 lo\u00e0i lu\u00f4n xu\u1ea5t hi\u1ec7n c\u00f9ng S\u1ebfn m\u1eadt v\u1edbi t\u1ef7 l\u1ec7 t\u1ed5 th\u00e0nh t\u1eeb 5,5 – 34,7%. S\u1ed1 l\u01b0\u1ee3ng lo\u00e0i c\u00e2y g\u1ed7 trong h\u1ec7 sinh th\u00e1i r\u1eebng n\u00e0y kh\u00e1 th\u1ea5p, ch\u1ec9 t\u1eeb 3 – 8 lo\u00e0i. M\u1eb7c d\u00f9 Lim xanh kh\u00f4ng chi\u1ebfm \u01b0u th\u1ebf v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng, nh\u01b0ng v\u1edbi \u0111\u1eb7c \u0111i\u1ec3m c\u00f3 chi\u1ec1u cao v\u01b0\u1ee3t tr\u1ed9i v\u00e0 di\u1ec7n t\u00edch t\u00e1n l\u1edbn g\u1ea5p 3 l\u1ea7n c\u00e1c lo\u00e0i kh\u00e1c, lo\u00e0i Lim xanh \u0111ang t\u1ea1o ra nh\u1eefng \u1ea3nh h\u01b0\u1edfng nh\u1ea5t \u0111\u1ecbnh v\u1ec1 ch\u1ebf \u0111\u1ed9 \u00e1nh s\u00e1ng, kh\u00f4ng gian sinh d\u01b0\u1ee1ng v\u00e0 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y kh\u00e1c trong r\u1eebng, \u0111\u1eb7c bi\u1ec7t l\u00e0 S\u1ebfn m\u1eadt. M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh dao \u0111\u1ed9ng t\u1eeb 2.910 – 3.131 c\u00e2y\/ha, trong \u0111\u00f3 s\u1ed1 l\u01b0\u1ee3ng c\u00e2y t\u00e1i sinh lo\u00e0i S\u1ebfn m\u1eadt l\u00e0 nhi\u1ec1u nh\u1ea5t nh\u01b0ng \u0111a ph\u1ea7n l\u00e0 c\u00e2y m\u1ea1, \u00edt c\u00e2y t\u00e1i sinh tri\u1ec3n v\u1ecdng. S\u1ed1 c\u00e2y t\u00e1i sinh tri\u1ec3n v\u1ecdng ch\u1ee7 y\u1ebfu l\u00e0 lo\u00e0i Lim xanh. C\u1ea7n c\u00f3 c\u00e1c bi\u1ec7n ph\u00e1p h\u1ed7 tr\u1ee3, x\u00fac ti\u1ebfn t\u00e1i sinh lo\u00e0i S\u1ebfn m\u1eadt \u0111\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 sinh th\u00e1i r\u1eebng.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>Lim xanh, S\u1ebfn m\u1eadt, sinh tr\u01b0\u1edfng, t\u00e1i sinh<\/b><\/td>\n<\/tr>\n

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Research on structure and generation of\u00a0Madhuca pasquieri<\/i>\u00a0forest in Ha Trung district, Thanh Hoa province<\/strong><\/p>\n

Madhuca pasquieri<\/i>\u00a0is a multi-functional indigenous tree species with high economic value. In nature, there is very rare forest ecosystem with high density of this species. The study was conducted based on data collected from 54 plots with an area of \u200b\u200b1000m2<\/sup>\u00a0(40 \u00b4 25m) in three forest status: Mainly\u00a0M. pasquieri<\/i>\u00a0forest,\u00a0M. pasquieri<\/i>–Erythrophleum fordii<\/i>\u00a0forest and\u00a0E. fordii<\/i>–M. pasquieri<\/i>\u00a0forest. In each plot, there are five sub-plots with areas of 25 m2<\/sup>\u00a0(5 \u00b4 5m) was established to study forest regeneration. The results showed that\u00a0M. pasquieri<\/i>\u00a0is the dominant species with high number of species richness index, from 63.7 – 68.9%.
\nE. fordii<\/i>\u00a0is the species that always occur together with\u00a0M. pasquieri<\/i>\u00a0by the species richness index of 5.5 – 34.7%. The number of timber species in this forest ecosystem is low, ranging from three to eight species. Although\u00a0E. fordii<\/i>\u00a0does not dominate by numbers of population, but with features of exceptional height and huge canopy (3 times more than other species),\u00a0E. fordii<\/i>\u00a0is creating certain effects on the light condition, spaces and living condition of other forest species, especially\u00a0M. pasquieri<\/i>. The density of regenerated trees ranges from 2,910 to 3,131 trees\/ha. The number of regenerated tree for\u00a0M. pasquieri<\/i>\u00a0species is highest, but most of tree are small and under cover of bush and grass which lead to low potential to become a wood tree. Most of best generated trees are\u00a0E. fordii<\/i>\u00a0and this species have potential to become next wood tree generation of forest. Silviculture measurement should be taken in to account to support and promote the regeneration of\u00a0M. pasquieri<\/i>\u00a0species to maintain the stability of the forest ecosystem.<\/p>\n

Key words:\u00a0<\/i><\/b>Erythrophleum fordii<\/i>,\u00a0Madhuca pasquieri<\/i>, grown, regeneration<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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PH\u00c2N L\u1eacP V\u00c0 TUY\u1ec2N CH\u1eccN VI SINH V\u1eacT N\u1ed8I SINH\u00a0TRONG C\u00c2Y KEO TAI T\u01af\u1ee2NG \u1ee8C CH\u1ebe N\u1ea4M\u00a0Ceratocystis manginecans<\/i><\/i><\/p>\n

\u00a0Tr\u1ea7n Th\u1ecb Thanh T\u00e2m1<\/sup>, Ph\u1ea1m Quang Thu2<\/sup>, Nguy\u1ec5n Minh Ch\u00ed2<\/sup><\/p>\n

[1] \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Th\u00e1i Nguy\u00ean, \u0110\u1ea1i h\u1ecdc Th\u00e1i Nguy\u00ean<\/p>\n

2 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
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T\u00d3M T\u1eaeT<\/p>\n

C\u00e1c lo\u00e0i keo \u0111\u01b0\u1ee3c tr\u1ed3ng ph\u1ed5 bi\u1ebfn \u1edf Vi\u1ec7t Nam nh\u1eb1m cung c\u1ea5p g\u1ed7 x\u1ebb, nguy\u00ean li\u1ec7u d\u0103m v\u00e0 gi\u1ea5y. Di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng keo lai, Keo tai t\u01b0\u1ee3ng v\u00e0 Keo l\u00e1 tr\u00e0m \u1edf Vi\u1ec7t Nam \u0111\u1ea1t kho\u1ea3ng 1,3 tri\u1ec7u ha v\u00e0o n\u0103m 2015. Tuy nhi\u00ean, r\u1eebng tr\u1ed3ng c\u00e1c lo\u00e0i keo th\u01b0\u1eddng b\u1ecb b\u1ec7nh ch\u1ebft h\u00e9o do n\u1ea5m\u00a0Ceratocystis manginecans<\/i>\u00a0g\u00e2y ra. Nh\u1eb1m ph\u00e1t tri\u1ec3n ch\u1ebf ph\u1ea9m sinh h\u1ecdc ph\u00f2ng tr\u1eeb b\u1ec7nh, nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 ph\u00e2n l\u1eadp, thu\u1ea7n khi\u1ebft \u0111\u01b0\u1ee3c 14 ch\u1ee7ng vi khu\u1ea9n n\u1ed9i sinh v\u00e0 12 ch\u1ee7ng n\u1ea5m n\u1ed9i sinh t\u1eeb c\u00e1c m\u1eabu c\u00e2y Keo tai t\u01b0\u1ee3ng t\u1ea1i Th\u00e1i Nguy\u00ean. \u0110\u00e1nh gi\u00e1 hi\u1ec7u l\u1ef1c \u1ee9c ch\u1ebf n\u1ea5m\u00a0C. manginecans<\/i>\u00a0g\u00e2y b\u1ec7nh ch\u1ebft h\u00e9o c\u1ee7a c\u00e1c ch\u1ee7ng vi sinh v\u1eadt n\u1ed9i sinh, \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c hai ch\u1ee7ng vi khu\u1ea9n (K1, K7) v\u00e0 hai ch\u1ee7ng n\u1ea5m (N28, N31) c\u00f3 kh\u1ea3 n\u0103ng \u1ee9c ch\u1ebf n\u1ea5m\u00a0C. manginecans<\/i>\u00a0r\u1ea5t m\u1ea1nh. K\u1ebft qu\u1ea3 gi\u1ea3i tr\u00ecnh t\u1ef1 ADN \u0111\u00e3 x\u00e1c \u0111\u1ecbnh ch\u1ee7ng vi khu\u1ea9n n\u1ed9i sinh K1 l\u00e0\u00a0Bacillus cereus<\/i>, ch\u1ee7ng vi khu\u1ea9n n\u1ed9i sinh K7 l\u00e0\u00a0Bacillus tequilensis<\/i>, ch\u1ee7ng n\u1ea5m n\u1ed9i sinh N28 l\u00e0\u00a0Diaporthe tectonigena<\/i>\u00a0v\u00e0 ch\u1ee7ng n\u1ea5m n\u1ed9i sinh N31 thu\u1ed9c chi\u00a0Arcopilus<\/i>\u00a0nh\u01b0ng ch\u01b0a x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1ebfn lo\u00e0i. Tuy nhi\u00ean, vi khu\u1ea9n\u00a0B. cereus<\/i>\u00a0\u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ng\u1ed9 \u0111\u1ed9c th\u1ef1c ph\u1ea9m, g\u00e2y ti\u00eau ch\u1ea3y n\u00ean \u0111\u00e3 lo\u1ea1i b\u1ecf kh\u00f4ng nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 kh\u1eb3ng \u0111\u1ecbnh c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng vi khu\u1ea9n n\u1ed9i sinh\u00a0Bacillus tequilensis<\/i>, n\u1ea5m n\u1ed9i sinh\u00a0Diaporthe tectonigena<\/i>\u00a0v\u00e0\u00a0Arcopilus<\/i>\u00a0sp. (N31) ph\u1ee5c v\u1ee5 qu\u1ea3n l\u00fd b\u1ec7nh ch\u1ebft h\u00e9o r\u1eebng tr\u1ed3ng keo.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>B\u1ec7nh ch\u1ebft h\u00e9o,\u00a0Ceratocystis manginecans,<\/i>\u00a0keo tai t\u01b0\u1ee3ng, vi sinh v\u1eadt n\u1ed9i sinh, vi khu\u1ea9n, n\u1ea5m<\/b><\/td>\n<\/tr>\n

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Isolation and Evaluation of Endophytes from\u00a0Acacia mangium<\/i>\u00a0antagonising to\u00a0Ceratocystis manginecans<\/i><\/strong><\/p>\n

Acacia<\/i>\u00a0species are planted for sawnwood, chip and pulp. In Vietnam,\u00a0Acacia\u00a0<\/i>hybird,\u00a0A. mangium\u00a0<\/i>and\u00a0A. auriculiformis<\/i>\u00a0have been planted in large scale under areas of about 1.3 million hectares in 2015. However, the wilt disease caused by\u00a0Ceratocystis manginecans\u00a0<\/i>has been spread and become a serious threat to these plantations. The result of a study undertaken in order to develop the bioproduct to control the disease showed that 14 endophytic bacterial strains and 12 fungal endophyte strains were isolated from\u00a0A. mangium<\/i>\u00a0planted in Thai Nguyen province. These strains were used to test antifungal activity by using the dual culture method. The antifungal activity of the bacterial endophytes against\u00a0C. manginecans<\/i>\u00a0differed between strains and showed that two endophytic bacterial strains (K1 and K7), and two endophytic fungal strains (N28 and N31) showed very strong antagonism to\u00a0C. manginecans<\/i>. Endophytes was identified by molecular biology technique. The endophytic bacterial strain K1 was indicated as\u00a0Bacillus cereus<\/i>, K7 was indicated as\u00a0Bacillus tequilensis<\/i>. The fungal endophyte strain N28 was indicated as\u00a0Diaporthe tectonigena<\/i>\u00a0and N31 was indicated as\u00a0Arcopilus\u00a0<\/i>sp. However, the bacterial\u00a0B. cereus<\/i>\u00a0has been identified as a cause of food poisoning, causing diarrhea. It is recommended that three endophytes (Bacillus tequilensis<\/i>,\u00a0Diaporthe tectonigena<\/i>\u00a0and\u00a0Arcopilus<\/i>\u00a0sp. (N31)) be considered for managing\u00a0Ceratocystis<\/i>\u00a0wilt disease.<\/p>\n

Key words:\u00a0<\/i><\/b>Acacia mangium,\u00a0<\/i>Ceratocystis manginecans,\u00a0<\/i>endophytes, wilt disease<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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B\u00ca\u0323NH \u0110\u1ed0M L\u00c1, LO\u00c9T TH\u00c2N BA\u0323CH \u0110\u00c0N\u00a0\u1ede GIAI \u0110O\u1ea0N V\u01af\u1edcN \u01af\u01a0M<\/p>\n

\u00a0N\u00f4ng Ph\u01b0\u01a1ng Nhung1<\/sup>, \u0110\u1eb7ng Th\u1ecb Kim Anh2<\/sup>, Tr\u1ea7n Xu\u00e2n Hinh3<\/sup>, Nguy\u1ec5n Minh Ch\u00ed3<\/sup><\/p>\n

1 Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n

2 Trung t\u00e2m Vi sinh v\u1eadt c\u00f4ng nghi\u1ec7p, Vi\u1ec7n C\u00f4ng nghi\u1ec7p th\u1ef1c ph\u1ea9m
\n3 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
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T\u00d3M T\u1eaeT<\/p>\n

C\u00e1c lo\u00e0i b\u1ea1ch \u0111\u00e0n \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m c\u00e2y tr\u1ed3ng r\u1eebng ch\u00ednh t\u1ea1i nhi\u1ec1u t\u1ec9nh, t\u1ed5ng di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n \u1edf Vi\u1ec7t Nam hi\u1ec7n \u0111\u1ea1t kho\u1ea3ng 170.000ha. Nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, tri\u1ec7u ch\u1ee9ng v\u00e0 nguy\u00ean nh\u00e2n g\u00e2y b\u1ec7nh \u0111\u1ed1m l\u00e1, lo\u00e9t th\u00e2n c\u00e2y b\u1ea1ch \u0111\u00e0n \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m \u1edf t\u1ec9nh Ph\u00fa Th\u1ecd, Vi\u1ec7t Nam. Tri\u1ec7u ch\u1ee9ng \u0111i\u1ec3n h\u00ecnh l\u00e0 tr\u00ean th\u00e2n c\u00e2y b\u1ecb b\u1ec7nh c\u00f3 nh\u1eefng v\u1ebft lo\u00e9t, th\u00e2m ho\u1eb7c v\u1ebft l\u00f5m \u1edf ph\u1ea7n v\u1ecf c\u00e2y, l\u00e1 c\u00e2y b\u1ecb b\u1ec7nh xu\u1ea5t hi\u1ec7n c\u00e1c \u0111\u1ed1m n\u00e2u v\u00e0 lan r\u1ed9ng nhanh. C\u00e1c ch\u1ee7ng n\u1ea5m c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y b\u1ec7nh r\u1ea5t kh\u00e1c nhau v\u00e0 \u0111\u01b0\u1ee3c chia th\u00e0nh 4 nh\u00f3m g\u1ed3m: g\u00e2y b\u1ec7nh y\u1ebfu (1 ch\u1ee7ng), g\u00e2y b\u1ec7nh trung b\u00ecnh (4 ch\u1ee7ng), g\u00e2y b\u1ec7nh m\u1ea1nh (3 ch\u1ee7ng) v\u00e0 g\u00e2y b\u1ec7nh r\u1ea5t m\u1ea1nh (2 ch\u1ee7ng). Nghi\u00ean c\u1ee9u \u0111\u1ecbnh lo\u1ea1i n\u1ea5m g\u00e2y b\u1ec7nh b\u1eb1ng k\u1ef9 thu\u1eadt sinh h\u1ecdc ph\u00e2n t\u1eed, trong \u0111\u00f3 s\u1eed d\u1ee5ng c\u1eb7p m\u1ed3i ITS1 v\u00e0 ITS4. K\u1ebft qu\u1ea3 gi\u1ea3i tr\u00ecnh t\u1ef1 \u0111o\u1ea1n gen ITS c\u1ee7a hai ch\u1ee7ng g\u00e2y b\u1ec7nh r\u1ea5t m\u1ea1nh v\u00e0 so s\u00e1nh v\u1edbi\u00a0<\/b>c\u00e1c tr\u00ecnh t\u1ef1 tham chi\u1ebfu GU973522 (Cheewangkoon\u00a0et al.<\/i>, 2010) v\u00e0 GU973519 (Lueangpraplut\u00a0et al.<\/i>, 2013) \u0111\u00e3 x\u00e1c \u0111\u1ecbnh n\u1ea5m g\u00e2y b\u1ec7nh \u0111\u1ed1m l\u00e1, lo\u00e9t th\u00e2n c\u00e2y b\u1ea1ch \u0111\u00e0n \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m thu\u1ed9c lo\u00e0i\u00a0Pseudoplagiostoma eucalypti<\/i>. \u0110\u00e2y l\u00e0 lo\u00e0i n\u1ea5m g\u00e2y b\u1ec7nh nghi\u00eam tr\u1ecdng r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n \u1edf Th\u00e1i Lan, do v\u1eady c\u1ea7n nghi\u00ean c\u1ee9u gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3 lo\u00e0i n\u1ea5m g\u00e2y b\u1ec7nh n\u00e0y nh\u1eb1m h\u1ea1n ch\u1ebf s\u1ef1 l\u00e2y lan tr\u00ean di\u1ec7n r\u1ed9ng \u1edf Vi\u1ec7t Nam.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>B\u1ec7nh \u0111\u1ed1m l\u00e1, b\u1ec7nh lo\u00e9t th\u00e2n, b\u1ea1ch \u0111\u00e0n lai, b\u1ea1ch \u0111\u00e0n ur\u00f4,\u00a0Pseudoplagiostoma eucalypti<\/i><\/b><\/td>\n<\/tr>\n

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Leaf spot and canker disease of\u00a0Eucalyptus<\/i>\u00a0in nursery stage<\/strong><\/p>\n

In Vietnam, several\u00a0Eucalyptus\u00a0<\/i>species have been planted in large scale under about 170,000 hectares in 2015. The aim of this study is to evaluate morphological characteristics, symptoms, pathogenicity and to indentify the cause of leaf spot and canker of\u00a0Eucalyptus<\/i>\u00a0spp. in nursery stage in Phu Tho province, Vietnam. The disease symptoms including staining of the vascular tissue, cankers and wilting on infected parts of the trees, or spots exuding in the leaves. The infected trees showed to be wilting symptom and died after ward. Pathogenicity of 10 isolates was varied and divided into 4 groups: weak (1 isolate), average (4 isolates), strong (3 isolates) and very strong (2 isolates). Fungal pathogen was identified by using molecular biology technique using ITS1 and ITS4 primers. The ITS sequence analysis of the two highly pathogenic isolates were compared with the reference sequence GU973522 (Cheewangkoon\u00a0et al.<\/i>, 2010) and GU973519 (Lueangpraplut\u00a0et al.<\/i>, 2013). Two isolates (PN3 and PN4)\u00a0<\/b>were indicated as\u00a0Pseudoplagiostoma eucalypti<\/i>, a serious pathogenic in eucalyptus plantation in Thailand. Therefore, it is necessary to study the effective management of this fungus in order to limit the spread of the disease in Vietnam.<\/p>\n

Key words:\u00a0<\/i><\/b>Canker disease, leaf spot,\u00a0Pseudoplagiostoma\u00a0<\/i>eucalypti, Eucalyptus hybrid, Eucalyptus urophylla<\/i><\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

VARIATIONS OF SOIL CHEMICAL PROPERTIES AT DIFFERENT HORIZONS UNDER NATURAL FOREST CANOPY\u00a0IN KON KA KINH NATIONAL PARK, GIA LAI<\/p>\n

Nguyen Thi Bich Phuong1<\/sup>, Bui Manh Hung2<\/sup><\/p>\n

1<\/sup>Vietnam National University of Forestry<\/p>\n

2<\/sup>Vietnam National University of Forestry<\/p>\n\n\n\n\n
\n

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

Forests contribute an important role in mitigating atmospheric CO2<\/sub>\u00a0because forest ecosystems are paramount elements of carbon cycle and carbon sequestration in soil, detritus and vegetation. The research which carried out in 14 plots with area of 2000m2<\/sup>\u00a0has compared and discussed the differences in soil organic carbon (SOC) distribution, some macronutrients and mobility Fe ion at different vertical soil horizons (0 – 10cm, 10 – 20cm, 20 – 30cm, 30 – 50cm) between old-growth and secondary forests in Kon Ka Kinh National Park. The results show that the content of all properties has a significant difference between the two forest types (Sig values of linear tmixed effect models < 0.05). Most of the indicators are significantly different between soil layers (Sig. < 0.05) while total phosphorus content is less changed and total potassium content increases with vertical soil depths. The principal component analysis diagram also indicates that the soil properties closely related, especially soil organic carbon, total nitrogen and total phosphorus.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>Soil organic carbon, soil chemical properties, natural forest types, Kon Ka Kinh national park<\/b><\/td>\n<\/tr>\n

\n

Bi\u1ebfn \u0111\u1ed9ng t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u1ea5t \u1edf c\u00e1c \u0111\u1ed9 s\u00e2u d\u01b0\u1edbi t\u00e1n r\u1eebng t\u1ef1 nhi\u00ean t\u1ea1i V\u01b0\u1eddn qu\u1ed1c gia Kon Ka Kinh, Gia Lai<\/strong><\/p>\n

R\u1eebng \u0111\u00f3ng g\u00f3p vai tr\u00f2 quan tr\u1ecdng v\u00e0o vi\u1ec7c gi\u1ea3m thi\u1ec3u kh\u00ed CO2<\/sub>\u00a0kh\u00ed quy\u1ec3n b\u1edfi v\u00ec r\u1eebng l\u00e0 m\u1ed9t th\u00e0nh t\u1ed1 c\u1ef1c k\u1ef3 quan tr\u1ecdng c\u1ee7a v\u00f2ng tu\u1ea7n ho\u00e0n cacbon v\u00e0 l\u00e0 b\u1ec3 ch\u1ee9a cacbon trong \u0111\u1ea5t, v\u1eadt r\u01a1i r\u1ee5ng v\u00e0 th\u1ea3m th\u1ef1c v\u1eadt. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u tr\u00ean 14 \u00d4TC di\u1ec7n t\u00edch 2000m2<\/sup>\u00a0ch\u1ec9 ra s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 ph\u00e2n b\u1ed1 theo \u0111\u1ed9 s\u00e2u t\u1ea7ng \u0111\u1ea5t (0 – 10cm, 10 – 20cm, 20 – 30cm, 30 – 50cm) c\u1ee7a cacbon h\u1eefu c\u01a1, m\u1ed9t s\u1ed1 nguy\u00ean t\u1ed1 dinh d\u01b0\u1ee1ng \u0111a l\u01b0\u1ee3ng, h\u00e0m l\u01b0\u1ee3ng ion Fe di \u0111\u1ed9ng trong \u0111\u1ea5t gi\u1eefa r\u1eebng th\u1ee9 sinh v\u00e0 r\u1eebng gi\u00e0 t\u1ea1i V\u01b0\u1eddn qu\u1ed1c gia Kon Ka Kinh, \u0111\u1ed3ng th\u1eddi, nghi\u00ean c\u1ee9u c\u0169ng ch\u1ec9 ra s\u1ef1 bi\u1ebfn \u0111\u1ed9ng c\u00e1c bi\u1ebfn \u0111\u00f3 gi\u1eefa c\u00e1c \u0111\u1ed9 s\u00e2u t\u1ea7ng \u0111\u1ea5t. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng, h\u00e0m l\u01b0\u1ee3ng t\u1ea5t c\u1ea3 c\u00e1c bi\u1ebfn \u0111\u1ec1u c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t gi\u1eefa hai tr\u1ea1ng th\u00e1i r\u1eebng (Gi\u00e1 tr\u1ecb Sig c\u1ee7a m\u00f4 h\u00ecnh tuy\u1ebfn t\u00ednh h\u1ed7n h\u1ee3p < 0,05). H\u1ea7u h\u1ebft h\u00e0m l\u01b0\u1ee3ng c\u00e1c bi\u1ebfn nghi\u00ean c\u1ee9u kh\u00e1c nhau r\u00f5 r\u1ec7t gi\u1eefa c\u00e1c t\u1ea7ng \u0111\u1ea5t (Sig. < 0,05) trong khi \u0111\u00f3 h\u00e0m l\u01b0\u1ee3ng photpho \u00edt c\u00f3 s\u1ef1 thay \u0111\u1ed5i theo \u0111\u1ed9 s\u00e2u t\u1ea7ng \u0111\u1ea5t v\u00e0 h\u00e0m l\u01b0\u1ee3ng kali l\u00e0 t\u0103ng d\u1ea7n theo \u0111\u1ed9 s\u00e2u t\u1ea7ng \u0111\u1ea5t. Bi\u1ec3u \u0111\u1ed3 ph\u00e2n t\u00edch th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 nghi\u00ean c\u1ee9u c\u1ee7a hai tr\u1ea1ng th\u00e1i r\u1eebng c\u0169ng ch\u1ec9 ra r\u1eb1ng gi\u1eefa c\u00e1c bi\u1ebfn c\u00f3 m\u1ed1i quan h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi nhau, \u0111\u1eb7c bi\u1ec7t l\u00e0 h\u00e0m l\u01b0\u1ee3ng cacbon h\u1eefu c\u01a1, \u0111\u1ea1m v\u00e0 l\u00e2n.<\/p>\n

Key words:\u00a0<\/i><\/b>C\u00e1c bon h\u1eefu c\u01a1 \u0111\u1ea5t, t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u1ea5t, c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng t\u1ef1 nhi\u00ean, V\u01b0\u1eddn qu\u1ed1c gia Kon Ka Kinh<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

UNIVARTIATE, MULTIVARIATE AND PERMUTATIONAL ANALYSIS OF VARIANCE METHODS FOR FORESTRY DATA BY USING R<\/p>\n

\u00a0Bui Manh Hung<\/p>\n

International Cooperation Division (ICD), Vietnam National University of Forestry,<\/p>\n

Xuan Mai, Chuong My, Hanoi<\/p>\n\n\n\n\n
\n

ABSTRACT<\/p>\n

Analysis of Variance has been widely used in the analysis of forestry research data. They have contributed to a very common question in forest science: are factors affect results of experiments? Analysis of variance (ANOVA) can help researchers to analyze the effect of one or more factors on experimental results. In the meanwhile, ANCOVA besides examining the effects of factors, they also help to check the effect of covariance as well as the relationship between factors and covariance. To make more objective and accurate conclusions, MANOVA should be applied, because MANOVA is able to analyze the effect of factors on experimental results based on various continuous variables. Permutational univariate and multivariate analysis of variance (PERANOVA and PERMANOVA) are new analysis tools. These tools do not require any assumptions. Because of this, scientists can apply them in various fields of forest science. To support and implement PERANOVA and PERMANOVA, the R language should be implemented. The reason is that powerful statistical analysis softwares like SPSS, Stata or Sas is difficult or impossible to conduct these contents.<\/p>\n

Key words:\u00a0<\/i><\/b>Anova, ancova, forestry data, manova, peranova, permanova, R language.<\/b><\/td>\n<\/tr>\n

\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai \u0111\u01a1n bi\u1ebfn, \u0111a bi\u1ebfn v\u00e0 \u0111a bi\u1ebfn l\u1eb7p s\u1ed1 li\u1ec7u l\u00e2m nghi\u1ec7p b\u1eb1ng R<\/strong><\/p>\n

Ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ph\u00e2n t\u00edch s\u1ed1 li\u1ec7u nghi\u00ean c\u1ee9u L\u00e2m nghi\u1ec7p hi\u1ec7n nay. Ch\u00fang \u0111\u00e3 g\u00f3p ph\u1ea7n tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi r\u1ea5t ph\u1ed5 bi\u1ebfn trong khoa h\u1ecdc l\u00e2m nghi\u1ec7p: c\u00e1c nh\u00e2n t\u1ed1 c\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1edbi k\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m hay kh\u00f4ng? Ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai (ANOVA) \u0111\u01a1n bi\u1ebfn c\u00f3 th\u1ec3 gi\u00fap c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u ph\u00e2n t\u00edch \u0111\u01b0\u1ee3c \u1ea3nh h\u01b0\u1edfng c\u1ee7a m\u1ed9t ho\u1eb7c nhi\u1ec1u nh\u00e2n t\u1ed1 \u0111\u1ebfn k\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m. Trong khi \u0111\u00f3 v\u1edbi ANCOVA, ngo\u00e0i vi\u1ec7c ki\u1ec3m tra \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1, ch\u00fang c\u00f2n gi\u00fap ki\u1ec3m tra \u1ea3nh h\u01b0\u1edfng c\u1ee7a hi\u1ec7p bi\u1ebfn c\u0169ng nh\u01b0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c nh\u00e2n t\u1ed1 v\u1edbi hi\u1ec7p bi\u1ebfn. \u0110\u1ec3 c\u00f3 nh\u1eefng k\u1ebft lu\u1eadn kh\u00e1ch quan v\u00e0 ch\u00ednh x\u00e1c h\u01a1n, MANOVA n\u00ean \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng b\u1edfi l\u1ebd MANOVA c\u00f3 th\u1ec3 ph\u00e2n t\u00edch \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 t\u1edbi k\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m d\u1ef1a tr\u00ean nhi\u1ec1u bi\u1ebfn li\u00ean t\u1ee5c kh\u00e1c nhau. Ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai \u0111\u01a1n v\u00e0 \u0111a bi\u1ebfn l\u1eb7p (PERANOVA v\u00e0 PERMANOVA) nh\u1eefng c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai m\u1edbi ra \u0111\u1eddi. Nh\u1eefng ph\u00e2n t\u00edch n\u00e0y kh\u00f4ng y\u00eau c\u1ea7u b\u1ea5t k\u1ef3 \u0111i\u1ec1u ki\u1ec7n n\u00e0o. C\u0169ng v\u00ec l\u1ebd \u0111\u00f3, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 th\u1ec3 \u1ee9ng d\u1ee5ng ch\u00fang trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau c\u1ee7a khoa h\u1ecdc l\u00e2m nghi\u1ec7p. \u0110\u1ec3 h\u1ed7 tr\u1ee3 v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai l\u1eb7p th\u00ec ng\u00f4n ng\u1eef R n\u00ean \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng b\u1edfi l\u1ebd hi\u1ec7n nay c\u00e1c ph\u1ea7n m\u1ec1m ph\u00e2n t\u00edch th\u1ed1ng k\u00ea m\u1ea1nh nh\u01b0 SPSS, Stata hay Sas r\u1ea5t kh\u00f3 ho\u1eb7c kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c nh\u1eefng n\u1ed9i dung n\u00e0y.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>Anova, ancova, manova, ng\u00f4n ng\u1eef R, peranova, permanova, s\u1ed1 li\u1ec7u l\u00e2m nghi\u1ec7p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u1ee8NG D\u1ee4NG GIS TRONG PH\u00c2N C\u1ea4P \u0110\u1ea6U NGU\u1ed2N\u00a0L\u01afU V\u1ef0C LA NG\u00c2U, HUY\u1ec6N T\u00c1NH LINH, T\u1ec8NH B\u00ccNH THU\u1eacN<\/p>\n

\u00a0Tr\u1ea7n Th\u1ecb Ngoan1<\/sup>, Nguy\u1ec5n V\u0103n H\u1ee3p1<\/sup>, Tr\u1ea7n Quang B\u1ea3o1<\/sup>,<\/p>\n

V\u00f5 Minh Ho\u00e0n1\u00a0<\/sup>, Nguy\u1ec5n H\u1eefu Th\u1ebf2<\/sup><\/p>\n

1\u00a0<\/sup>Ph\u00e2n hi\u1ec7u Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n

2\u00a0<\/sup>Ban Qu\u1ea3n l\u00fd r\u1eebng ph\u00f2ng h\u1ed9 T\u00e2n ph\u00fa, \u0110\u1ed3ng Nai<\/p>\n\n\n\n\n
\n

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

B\u00e0i b\u00e1o gi\u1edbi thi\u1ec7u k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ph\u00e2n c\u1ea5p \u0111\u1ea7u ngu\u1ed3n l\u01b0u v\u1ef1c La Ng\u00e2u, huy\u1ec7n T\u00e1nh Linh, t\u1ec9nh B\u00ecnh Thu\u1eadn. M\u1ee5c ti\u00eau nghi\u00ean c\u1ee9u l\u00e0 \u0111\u1ec1 xu\u1ea5t c\u00e1c gi\u1ea3i ph\u00e1p s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean thi\u00ean nhi\u00ean h\u1ee3p l\u00fd \u1ee9ng v\u1edbi t\u1eebng c\u1ea5p \u0111\u1ea7u ngu\u1ed3n c\u1ee7a l\u01b0u v\u1ef1c. Nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng ti\u00eau ch\u00ed ph\u00e2n c\u1ea5p \u0111\u1ea7u ngu\u1ed3n g\u1ed3m \u0111\u1ed9 cao, \u0111\u1ed9 \u0111\u1ed1c v\u00e0 \u0111\u1ecba h\u00ecnh. C\u01a1 s\u1edf ph\u00e2n chia c\u1ea5p \u0111\u1ea7u ngu\u1ed3n d\u1ef1a tr\u00ean Quy\u1ebft \u0111\u1ecbnh s\u1ed1 61\/2005\/Q\u0110-BNN v\u1ec1 ti\u00eau ch\u00ed ph\u00e2n c\u1ea5p r\u1eebng ph\u00f2ng h\u1ed9. \u1ee8ng d\u1ee5ng GIS ch\u1ed3ng gh\u00e9p c\u00e1c l\u1edbp b\u1ea3n \u0111\u1ed3 Raster \u0111\u1ec3 ph\u00e2n chia l\u01b0u v\u1ef1c La Ng\u00e2u th\u00e0nh 3 c\u1ea5p \u0111\u1ea7u ngu\u1ed3n \u1ee9ng v\u1edbi ti\u1ec1m n\u0103ng x\u00f3i m\u00f2n v\u00e0 nguy c\u01a1 kh\u00f4 h\u1ea1n. \u0110\u1ec3 l\u1ef1a ch\u1ecdn c\u00e1c ki\u1ec3u s\u1eed d\u1ee5ng \u0111\u1ea5t th\u00edch h\u1ee3p, nghi\u00ean c\u1ee9u ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m t\u1ea7ng c\u00e2y cao, t\u1ea7ng c\u00e2y th\u1ea5p v\u00e0 l\u1edbp th\u1ea3m kh\u00f4 t\u1ea1i 3 tr\u1ea1ng th\u00e1i r\u1eebng ch\u00ednh, g\u1ed3m r\u1eebng trung b\u00ecnh, r\u1eebng ph\u1ee5c h\u1ed3i v\u00e0 r\u1eebng h\u1ed7n giao. K\u1ebft qu\u1ea3 ph\u00e2n c\u1ea5p \u0111\u1ea7u ngu\u1ed3n cho th\u1ea5y, di\u1ec7n t\u00edch l\u01b0u v\u1ef1c thu\u1ed9c c\u1ea5p \u0111\u1ea7u ngu\u1ed3n 3 chi\u1ebfm 25,1%; n\u1eb1m ch\u1ee7 y\u1ebfu tr\u00ean \u0111\u1ecba b\u00e0n x\u00e3 La Ng\u00e2u, La D\u1ea1 v\u00e0 \u0110a Mi. Di\u1ec7n t\u00edch c\u1ea5p \u0111\u1ea7u ngu\u1ed3n 2 chi\u1ebfm di\u1ec7n t\u00edch l\u1edbn nh\u1ea5t 62,2%; C\u1ea5p \u0111\u1ea7u ngu\u1ed3n 1 c\u00f3 di\u1ec7n t\u00edch nh\u1ecf nh\u1ea5t 3479,9ha chi\u1ebfm 12,7% t\u1eadp trung ch\u1ee7 y\u1ebfu t\u1ea1i x\u00e3 La Ng\u00e2u v\u00e0 \u0110a Mi. Nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd v\u00e0 s\u1eed d\u1ee5ng \u0111\u1ea5t h\u1ee3p l\u00fd cho t\u1eebng c\u1ea5p l\u01b0u v\u1ef1c.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>GIS, La Ng\u00e2u,\u00a0l\u01b0u v\u1ef1c, ph\u00e2n c\u1ea5p \u0111\u1ea7u ngu\u1ed3n<\/b><\/td>\n<\/tr>\n

\n

GIS application in watershed classification in La Ngau basin, Tanh Linh district, Binh Thuan province<\/strong><\/p>\n

This paper introduces the results of research wastershed classification in La Ngau basin, Tanh Linh District, Binh Thuan Province. The objectives of research is to identify suitable solutions of land use for each watershed class. Topic uses the three main factors which affect potential erosion, include: elevation, slope and landform to classify. Watershed classification is based on Decision 61\/2005\/QD-BNN. Applying ArcGIS software and mapping analysis to classify La Ngau basin into 3 levels for potential erosion and drought risk (class). To select the appropriate type of land use for each watershed class, characteristics of vegetation cover in three main forest status including medium forest, rehabilitation forest and forest mixed. The result shows that class 3 is accounting for 25.1%; located mainly in La Ngau, La Da and Da Mi communes; Class 2 has the largest area accounting for 62.2%; Class 1 has the smallest area of \u200b\u200b3479.9ha, accounting for 12.7%. The research has proposed some management and landuse solution for each watershed classes in the basin.<\/p>\n

Key words:\u00a0<\/i><\/b>GIS, La Ngau, basin, watershed classification<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u0110\u00c1NH GI\u00c1 SINH TR\u01af\u1edeNG V\u00c0 HI\u1ec6U QU\u1ea2 KINH T\u1ebe\u00a0M\u1ed8T S\u1ed0 LO\u00c0I C\u00c2Y TR\u1ed2NG NGUY\u00caN LI\u1ec6U GI\u1ea4Y\u00a0T\u1ea0I C\u00d4NG TY L\u00c2M NGHI\u1ec6P XU\u00c2N \u0110\u00c0I, HUY\u1ec6N T\u00c2N S\u01a0N,\u00a0T\u1ec8NH PH\u00da TH\u1ecc<\/p>\n

\u00a0Ph\u1ea1m V\u0103n \u0110\u1ee9c1<\/sup>, Tr\u1ea7n Vi\u1ec7t H\u00e02<\/sup><\/p>\n

1<\/sup>UBND huy\u1ec7n T\u00e2n S\u01a1n, Ph\u00fa Th\u1ecd<\/p>\n

2<\/sup>\u00a0Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n\n\n\n\n
\n

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

Vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u00e0i c\u00e2y tr\u1ed3ng th\u00edch h\u1ee3p nh\u1ea5t \u0111\u1ec3 tr\u1ed3ng r\u1eebng nguy\u00ean li\u1ec7u gi\u1ea5y l\u00e0 v\u00f4 c\u00f9ng c\u1ea7n thi\u1ebft, nh\u1eb1m \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 l\u00e2m s\u1ea3n ng\u00e0y c\u00e0ng cao c\u1ee7a x\u00e3 h\u1ed9i. Y\u00eau c\u1ea7u \u0111\u1eb7t ra l\u00e0 ph\u1ea3i l\u1ef1a ch\u1ecdn lo\u00e0i c\u00e2y tr\u1ed3ng sinh tr\u01b0\u1edfng nhanh v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t, \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 cao v\u1ec1 kinh t\u1ebf. V\u00ec v\u1eady, b\u00e0i b\u00e1o \u0111\u00e3 t\u1eadp trung ph\u00e2n t\u00edch kh\u00eda c\u1ea1nh n\u00e0y t\u1eeb s\u1ed1 li\u1ec7u tr\u00ean 27 \u00f4 ti\u00eau chu\u1ea9n l\u1eadp t\u1ea1i 3 m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng thu\u1ea7n lo\u00e0i keo g\u1ed3m keo lai m\u00f4, keo lai hom v\u00e0 Keo tai t\u01b0\u1ee3ng 5 tu\u1ed5i. M\u1ed7i m\u00f4 h\u00ecnh l\u1eadp 9 \u00f4 ti\u00eau chu\u1ea9n v\u1edbi di\u1ec7n t\u00edch 500 m2<\/sup>\/OTC (25m \u00b4 20m) t\u1ea1i C\u00f4ng ty L\u00e2m nghi\u1ec7p Xu\u00e2n \u0110\u00e0i, huy\u1ec7n T\u00e2n S\u01a1n, t\u1ec9nh Ph\u00fa Th\u1ecd. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng: Keo l\u00e0 lo\u00e0i c\u00e2y c\u00f3 s\u1ee9c ch\u1ed1ng ch\u1ecbu t\u1ed1t, t\u1ed1c \u0111\u1ed9 sinh tr\u01b0\u1edfng nhanh. M\u1eb7c d\u00f9 v\u1eady, m\u00f4 h\u00ecnh tr\u1ed3ng thu\u1ea7n lo\u00e0i keo lai m\u00f4 l\u00e0 lo\u00e0i t\u1ecf ra \u01b0u vi\u1ec7t v\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng, l\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n h\u00e0ng n\u0103m v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao l\u1edbn h\u01a1n so v\u1edbi hai lo\u00e0i c\u00e2y c\u00f2n l\u1ea1i. M\u1eb7t kh\u00e1c, c\u1ea3 ba m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng thu\u1ea7n lo\u00e0i keo lai \u0111\u1ec1u c\u00f3 l\u00e3i, r\u1ea5t an to\u00e0n v\u1ec1 v\u1ed1n \u0111\u1ea7u t\u01b0 v\u00e0 ho\u00e0n tr\u1ea3 c\u1ea3 g\u1ed1c l\u1eabn l\u00e3i vay ng\u00e2n h\u00e0ng. Tuy nhi\u00ean, m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng keo lai m\u00f4 v\u1edbi m\u1eadt \u0111\u1ed9 1.333 c\u00e2y\/ha cho hi\u1ec7u qu\u1ea3 v\u1ec1 m\u1eb7t kinh t\u1ebf cao h\u01a1n x\u00e9t trong chu k\u1ef3 kinh doanh 7 n\u0103m so v\u1edbi hai m\u00f4 h\u00ecnh c\u00f2n l\u1ea1i.<\/p>\n

T\u1eeb kh\u00f3a:\u00a0<\/i><\/b>Hi\u1ec7u qu\u1ea3 kinh t\u1ebf, keo lai, sinh tr\u01b0\u1edfng<\/b><\/td>\n<\/tr>\n

\n

Evaluation of growth and economic efficiency of some pulp-producing plants in Xuan Dai forest company, Tan Son district, Phu Tho province<\/strong><\/p>\n

The selection of the most suitable forest planting models for pulp-producing plants is essential to meet the increasing demand of forest products of the society. It is required to select quick-growing species with high quality, and high economic efficiency. Therefore, this aspect was analyzed in the study. Data from 27 standard plots including\u00a0Acacia hybrid<\/i>\u00a0from tissue,\u00a0Acacia hybrid<\/i>\u00a0from cuttings and\u00a0Acacia mangium\u00a05 years old<\/i>, each model has 9 plots with an area of \u200b\u200b500 m2<\/sup>\/standard plots (25m \u00b4 20m) at Xuan Dai Forestry Company, Tan Son district, Phu Tho province was used in this study. Research results indicate that: Acacia is a fast-growing plant with strong level of disease resistance. However, The plants have different growth rates, the model with only\u00a0Acacia hybrid<\/i>\u00a0from tissue is superior to that of the other species, such as higher average annual growth in diameter and height. In addition, all three models of acacia plantation are profitable, very safe in terms of investment capital and repayment of principal and bank loans. However, the model of\u00a0Acacia hybrid<\/i>\u00a0from tissue with a density of 1,333plants\/hecta is more economically efficient in the seven-year business cycle compared to\u00a0Acacia hybrid<\/i>\u00a0from cuttings and\u00a0Acacia mangium<\/i>.<\/p>\n

Key words:\u00a0<\/i><\/b>Economic efficiency, Acacia hybrid, growth<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

\u0110\u00c1NH GI\u00c1 K\u1ebeT QU\u1ea2 KH\u1ea2O NGHI\u1ec6M V\u00c0 HI\u1ec6U QU\u1ea2 KINH T\u1ebe
\nC\u1ee6A 6 D\u00d2NG KEO LAI T\u1ea0I H\u00d2A B\u00ccNH<\/p>\n

\u00a0Ho\u00e0ng Li\u00ean S\u01a1n1<\/sup>, V\u0169 Duy H\u01b0ng1<\/sup>, B\u00f9i Ng\u1ecdc Thu H\u00e01<\/sup>,<\/p>\n

\u0110\u00e0o Quy\u1ebft Th\u1eafng2<\/sup>, Nguy\u1ec5n Minh Ng\u1ecdc3<\/sup><\/p>\n

[1]\u00a0Trung t\u00e2m Nghi\u00ean c\u1ee9u Kinh t\u1ebf L\u00e2m nghi\u1ec7p<\/p>\n

2 Cty TNHHMTV L\u00e2m nghi\u1ec7p H\u00f2a B\u00ecnh
\n3 Vi\u1ec7n NC Gi\u1ed1ng v\u00e0 CNSH LN<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng\u00a0<\/i>v\u00e0 ph\u00e2n t\u00edch hi\u1ec7u qu\u1ea3 kinh t\u1ebf c\u1ee7a 6 d\u00f2ng keo lai t\u1ea1i 3 \u0111\u1ecba \u0111i\u1ec3m \u0111\u1eb7c tr\u01b0ng cho \u0111i\u1ec1u ki\u1ec7n ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t c\u1ee7a t\u1ec9nh H\u00f2a B\u00ecnh cho th\u1ea5y: c\u00e1c d\u00f2ng keo lai kh\u1ea3o nghi\u1ec7m \u0111\u1ec1u c\u00f3 n\u0103ng su\u1ea5t cao h\u01a1n c\u00e1c d\u00f2ng keo lai \u0111\u1ed1i ch\u1ee9ng, v\u1edbi m\u1ee9c n\u0103ng su\u1ea5t b\u00ecnh qu\u00e2n cao h\u01a1n kho\u1ea3ng 5 m3<\/sup>\/ha\/n\u0103m. Tuy nhi\u00ean, n\u0103ng su\u1ea5t c\u1ee7a c\u00e1c gi\u1ed1ng keo lai kh\u1ea3o nghi\u1ec7m c\u00f3 s\u1ef1 ch\u00eanh l\u1ec7ch \u0111\u00e1ng k\u1ec3, v\u1edbi c\u00e1c gi\u1ed1ng keo lai MA1; BV73 v\u00e0 AM3 cho n\u0103ng su\u1ea5t cao v\u01b0\u1ee3t tr\u1ed9i \u1edf c\u1ea3 3 \u0111\u1ecba \u0111i\u1ec3m kh\u1ea3o nghi\u1ec7m (L\u01b0\u01a1ng S\u01a1n, K\u1ef3 S\u01a1n v\u00e0 \u0110\u00e0 B\u1eafc), v\u00e0 c\u00f3 \u0111\u1ed9 v\u01b0\u1ee3t v\u1ec1 th\u1ec3 t\u00edch tr\u00ean 50% so v\u1edbi c\u00e1c d\u00f2ng keo lai \u0111\u1ed1i ch\u1ee9ng. N\u0103ng su\u1ea5t cao nh\u1ea5t c\u1ee7a 3 d\u00f2ng keo lai \u0111\u01b0\u1ee3c ghi nh\u1eadn t\u1ea1i L\u01b0\u01a1ng S\u01a1n, l\u1ea7n l\u01b0\u1ee3t l\u00e0 25,5 m3<\/sup>\/ha\/n\u0103m; 29,5 m3<\/sup>\/ha\/n\u0103m; v\u00e0 24,0 m3<\/sup>\/ha\/n\u0103m. \u0110\u00e2y c\u0169ng l\u00e0 c\u00e1c d\u00f2ng keo lai mang l\u1ea1i hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao, trong khi c\u00e1c d\u00f2ng keo lai c\u00f2n l\u1ea1i c\u00f3 hi\u1ec7u qu\u1ea3 kinh t\u1ebf th\u1ea5p ho\u1eb7c kh\u00f4ng c\u00f3 hi\u1ec7u qu\u1ea3. Ch\u00ednh v\u00ec v\u1eady, MA1; BV73; v\u00e0 AM3 l\u00e0 3 gi\u1ed1ng keo lai ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba, mang l\u1ea1i n\u0103ng su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao trong ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t c\u1ee7a t\u1ec9nh H\u00f2a B\u00ecnh.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b>\u00a0Hi\u1ec7u qu\u1ea3 kinh t\u1ebf, keo lai, sinh tr\u01b0\u1edfng.<\/p>\n

 <\/td>\n<\/tr>\n

\n

Assessment of the experimental result and economic efficency of six acacia hybrid clones in Hoa Binh province<\/strong><\/p>\n

The results of the research on the assessment of the growth and economic efficiency of six hybrid acacia clones in three locations representing the characteristics of Hoa Binh\u2019s conditions to develop production forest plantation showed that all targeted hybrid acacia clones have higher productivities than control acacia varieties. The targeted hybrid acacia clones\u2019 average productivity is 05 m3<\/sup>\/ha\/year higher than the control hybrid acacia clones\u2019 average productivity. However, the productivities between targeted hybrid acacia clones are significantly different, with MA1; BV73; and AM3 hybrid acacia clones give surpassing productivities in all three trial sites (Luong Son, Ky Son va Da Bac), and have 50% volume higher than control hybrid acacia clones. The highest productivities of these three hybrid acacia clones recorded in Luong Son are 25.5 m3<\/sup>\/ha\/year; 29.5 m3<\/sup>\/ha\/year; and 24.0 m3<\/sup>\/ha\/year respectively. These hybrid acacia clones also have high economic efficiency, meanwhile the productivities of other clones are low or not efficient at all. Therefore, MA1; BV73; and AM3 are three hybrid acacia clones suitable for the site conditions, bringing high economic efficiency in the development of production forest plantation in Hoa Binh province.<\/p>\n

Key words:\u00a0<\/i><\/b>Economic efficiency, hybrid acacia, plantation forest,<\/i><\/p>\n

 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0\u00a01 –\u00a02018 \u00a0 1 Vai tr\u00f2 c\u1ee7a nghi\u00ean c\u1ee9u khoa h\u1ecdc v\u00e0 \u0111\u00e0o t\u1ea1o trong ph\u00e1t tri\u1ec3n l\u00e2m nghi\u1ec7p b\u1ec1n v\u1eefng The role of research and training in subtainable forestry development Ph\u1ea1m Th\u1ebf D\u0169ng 3 2 \u0110a d\u1ea1ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c r\u1eebng ph\u00f2ng h\u1ed9 T\u00e2n Ph\u00fa, t\u1ec9nh […]<\/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\/1597"}],"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=1597"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1597\/revisions"}],"predecessor-version":[{"id":1696,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1597\/revisions\/1696"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}