{"id":1614,"date":"2019-01-29T15:54:31","date_gmt":"2019-01-29T08:54:31","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=1614"},"modified":"2023-11-23T12:25:29","modified_gmt":"2023-11-23T05:25:29","slug":"vietnam-journal-of-forest-science-number-4-2018","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2019\/01\/vietnam-journal-of-forest-science-number-4-2018\/","title":{"rendered":"Vietnam Journal of Forest Science Number 4-2018"},"content":{"rendered":"

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

<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 4<\/strong> – <\/strong>201<\/strong>8<\/strong><\/p>\n

\u00a0<\/strong><\/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>\nNghi\u00ean c\u1ee9u \u0111a d\u1ea1ng c\u00e2y thu\u1ed1c \u1edf x\u00e3 Li\u00ean Minh, huy\u1ec7n V\u00f5 Nhai, t\u1ec9nh Th\u00e1i Nguy\u00ean<\/td>\nResearch on the diversity of medicinal plants in Lien Minh commune,
\nVo Nhai district,
\nThai Nguyen province<\/td>\n		Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n
\nTr\u1ecbnh \u0110\u00ecnh Kh\u00e1
\nNguy\u1ec5n Minh Hi\u1ebfu
\nL\u1ed3 Di M\u1ec1nh
\nV\u1ea3ng S\u1ea3o Hai<\/td>\n		5<\/td>\n<\/tr>\n
2<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m \u0111a d\u1ea1ng th\u00e0nh ph\u1ea7n lo\u00e0i th\u1ef1c v\u1eadt b\u1eadc cao tr\u00ean c\u1ea1n t\u1ea1i \u0111\u1ea3o H\u00f2n Lao thu\u1ed9c Khu D\u1ef1 tr\u1eef sinh quy\u1ec3n th\u1ebf gi\u1edbi C\u00f9 Lao Ch\u00e0m, th\u00e0nh ph\u1ed1 H\u1ed9i An, t\u1ec9nh Qu\u1ea3ng Nam<\/td>\nCharacteristic of terrestrial plant species diversity in Hon Lao island, Cu Lao Cham biosphere reserve, Quang Nam province<\/td>\nTr\u1ea7n Ng\u1ecdc To\u00e0n
\nB\u00f9i V\u0103n Tu\u1ea5n
\nTr\u1ea7n H\u1eefu V\u1ef9
\nHo\u00e0ng Qu\u1ed1c Huy
\nL\u00ea Vi\u1ebft M\u1ea1nh
\nNguy\u1ec5n Th\u1ecb Thi\u00ean H\u01b0\u01a1ng
\nNguy\u1ec5n Th\u1ecb Kim Y\u1ebfn<\/td>\n		15<\/td>\n<\/tr>\n
3<\/td>\nC\u00e1c gi\u1ed1ng keo lai m\u1edbi cho t\u1ec9nh Ph\u00fa Th\u1ecd v\u00e0 H\u00f2a B\u00ecnh<\/td>\nNew clones of acacia hybrid in Phu Tho and Hoa Binh<\/td>\nPh\u00ed H\u1ed3ng H\u1ea3i<\/td>\n29<\/td>\n<\/tr>\n
4<\/td>\nKh\u1ea3 n\u0103ng c\u1ea3i thi\u1ec7n v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y Keo tai t\u01b0\u1ee3ng trong c\u00e1c kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf th\u1ebf h\u1ec7 2 \u1edf Ngh\u1ec7 An v\u00e0 B\u00ecnh D\u01b0\u01a1ng,
\ntu\u1ed5i 8 – 9<\/td>\n		Genetic control on growth ND stem quality of Aacia mangium<\/em> in second generation progeny tests
\n8 – 9 age<\/td>\n		La \u00c1nh D\u01b0\u01a1ng
\nPh\u00ed H\u1ed3ng H\u1ea3i
\nTr\u1ecbnh V\u0103n Hi\u1ec7u<\/td>\n		38<\/td>\n<\/tr>\n
5<\/td>\nSinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y con Tam th\u1ea5t (Panax pseudogingseng<\/em> Wall.) trong \u0111i\u1ec1u ki\u1ec7n nh\u00e0 k\u00ednh t\u1ea1i \u0110\u00e0 L\u1ea1t, L\u00e2m \u0110\u1ed3ng<\/td>\nGrowth assessment of Tam that seedlings (Panax pseudogingseng <\/em>Wall.) in greenhouse of Da Lat, Lam Dong<\/td>\nHo\u00e0ng Thanh Tr\u01b0\u1eddng
\nGiang Th\u1ecb Thanh<\/td>\n		48<\/td>\n<\/tr>\n
6<\/td>\nSinh tr\u01b0\u1edfng, n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t c\u1ee7a m\u1ed9t s\u1ed1 d\u00f2ng M\u1eafc ca t\u1ea1i Lai Ch\u00e2u<\/td>\nGrowth, productivity and nut quality of some Macadamia clones in Lai Chau province<\/td>\nNguy\u1ec5n Th\u1ecb V\u00e2n Anh
\nTr\u1ea7n Ho\u00e0ng Qu\u00fd
\nNguy\u1ec5n Quang H\u01b0ng
\nNinh Vi\u1ec7t Kh\u01b0\u01a1ng
\nB\u00f9i Thanh T\u00e2n
\nNguy\u1ec5n Th\u1ecb Ho\u00e0i Anh<\/td>\n		54<\/td>\n<\/tr>\n
7<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac r\u1eebng v\u00e0 t\u00e1i sinh t\u1ef1 nhi\u00ean c\u1ee7a lo\u00e0i Tr\u1eafc nam b\u1ed9 (Dalbergia cochinchinensis<\/em> Pierre.) \u1edf Di Linh, L\u00e2m \u0110\u1ed3ng<\/td>\nCharacteristics of forest structure and natural regeneration of Dalbergia cochinchiensis<\/em> in Di Linh district, Lam \u0110ong provine<\/td>\nB\u00f9i Xu\u00e2n Ti\u1ebfn
\nNguy\u1ec5n Th\u00e0nh M\u1ebfn
\nHo\u00e0ng Thanh Tr\u01b0\u1eddng<\/td>\n		64<\/td>\n<\/tr>\n
8<\/td>\nSinh kh\u1ed1i c\u1ee7a qu\u1ea7n th\u1ec3 \u0110\u01b0\u1edbc \u0111\u00f4i (Rhizophora apiculata<\/em> Blume) tr\u1ed3ng t\u1ea1i Khu D\u1ef1 tr\u1eef sinh quy\u1ec3n r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd, th\u00e0nh ph\u1ed1 H\u1ed3 Ch\u00ed Minh<\/td>\nBiomass of the planted Rhizophora apiculata<\/em> Blume populations in Can Gio Mangrove Biosphere Reserve, Ho Chi Minh City<\/td>\nHu\u1ef3nh \u0110\u1ee9c Ho\u00e0n
\nB\u00f9i Nguy\u1ec5n Th\u1ebf Ki\u1ec7t
\nCao Huy B\u00ecnh
\nVi\u00ean Ng\u1ecdc Nam<\/td>\n		75<\/td>\n<\/tr>\n
9<\/td>\nInfiltration characteristics of soil under cinnamon and acacia plantation forest in headwater of Viet Nam<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m th\u1ea5m n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t d\u01b0\u1edbi r\u1eebng tr\u1ed3ng qu\u1ebf v\u00e0 keo t\u1ea1i v\u00f9ng \u0111\u1ea7u ngu\u1ed3n c\u1ee7a Vi\u1ec7t Nam<\/td>\nPham Thuy Linh
\nBui Xuan Dung
\nTran Quang Bao<\/td>\n		83<\/td>\n<\/tr>\n
10<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u00e2n b\u00f3n v\u00e0 ch\u1ea5t gi\u1eef \u1ea9m \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y Phi lao (Casuarina equisetifolia<\/em> Forst. Et Forst.f) tr\u00ean c\u1ed3n c\u00e1t b\u00e1n di \u0111\u1ed9ng t\u1ea1i huy\u1ec7n L\u1ec7 Th\u1ee7y t\u1ec9nh Qu\u1ea3ng B\u00ecnh v\u00e0 huy\u1ec7n Tri\u1ec7u Phong t\u1ec9nh Qu\u1ea3ng Tr\u1ecb<\/td>\nEffects of fertilizer and humectants to growth plant Casuarina equisetifolia<\/em> Forst. Et Forst.f in the sime – fixed sandy dunes in Le Thuy and Trieu Phong district, Quang Tri province<\/td>\nL\u00ea \u0110\u1ee9c Th\u1eafng,
\nNg\u00f4 \u0110\u00ecnh Qu\u1ebf<\/td>\n		97<\/td>\n<\/tr>\n
11<\/td>\nK\u1ebft qu\u1ea3 b\u01b0\u1edbc \u0111\u1ea7u nghi\u00ean c\u1ee9u c\u01a1 s\u1edf khoa h\u1ecdc b\u00f3n ph\u00e2n cho r\u1eebng tr\u1ed3ng keo lai \u1edf Qu\u1ea3ng Ninh<\/td>\nPrimary results of research on scientific basics to apply fertiliser for acacia hybrid plantations in Quang Ninh province<\/td>\nNguy\u1ec5n Huy S\u01a1n
\nPh\u1ea1m \u0110\u00ecnh S\u00e2m
\nV\u0169 Ti\u1ebfn L\u00e2m
\nH\u1ed3 Trung L\u01b0\u01a1ng<\/td>\n		107<\/td>\n<\/tr>\n
12<\/td>\nNghi\u00ean c\u1ee9u tri th\u1ee9c b\u1ea3n \u0111\u1ecba nh\u1eb1m b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n S\u00e2m lai ch\u00e2u tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh Lai Ch\u00e2u<\/td>\nStudy of indigenous knowledge for the purpose of conservation and development of Panax vietnamensis<\/em> var. fuscidiscus<\/em> K.Komatsu, S.Zhu & S.Q.Cai in Lai Chau province<\/td>\nNguy\u1ec5n Thanh S\u01a1n
\nPh\u1ea1m Quang Tuy\u1ebfn
\nHo\u00e0ng Thanh S\u01a1n
\nB\u00f9i Thanh T\u00e2n
\nTr\u1ecbnh Ng\u1ecdc Bon
\nNguy\u1ec5n Th\u1ecb V\u00e2n Anh
\nNguy\u1ec5n Th\u1ecb Ho\u00e0i Anh
\nPh\u1ea1m Ti\u1ebfn D\u0169ng
\nPatrick Nykiel
\nH\u00e0 Thanh T\u00f9ng<\/td>\n		116<\/td>\n<\/tr>\n
13<\/td>\nS\u1eed d\u1ee5ng \u1ea3nh vi\u1ec5n th\u00e1m LANDSAT v\u00e0 GIS x\u00e2y d\u1ef1ng b\u1ea3n \u0111\u1ed3 bi\u1ebfn \u0111\u1ed9ng di\u1ec7n t\u00edch r\u1eebng t\u1ea1i huy\u1ec7n \u0110oan H\u00f9ng, t\u1ec9nh Ph\u00fa Th\u1ecd<\/td>\nUsing LANDSAT data and GIS to quantify changes in forest land in Doan Hung district, Phu Tho province<\/td>\nL\u00ea Qu\u1ed1c H\u01b0ng
\nB\u00f9i M\u1ea1nh H\u01b0ng<\/td>\n		127<\/td>\n<\/tr>\n
14<\/td>\nS\u1eed d\u1ee5ng \u1ea3nh sentinel 2 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ng\u01b0\u1ee1ng ch\u1ec9 s\u1ed1 vi\u1ec5n th\u00e1m ph\u00e1t hi\u1ec7n s\u1edbm m\u1ea5t r\u1eebng t\u1ea1i Khu D\u1ef1 tr\u1eef sinh quy\u1ec3n th\u1ebf gi\u1edbi Langbiang, L\u00e2m \u0110\u1ed3ng<\/td>\nUsing sentinel 2 to determine thresholds of remote sensing indices for early detection of deforestation in Langbiang world biosphere reserve, Lam Dong province<\/td>\nNguy\u1ec5n H\u1ea3i H\u00f2a
\nPh\u00f9ng V\u0103n Khoa
\nL\u00ea V\u0103n H\u01b0\u01a1ng
\nL\u00ea V\u0103n S\u01a1n<\/td>\n		138<\/td>\n<\/tr>\n
15<\/td>\nM\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc, ph\u00f2ng tr\u1eeb m\u1ecdt Euwallacea fornicatus <\/em>Eichhoff (Coleoptera: Scolytidae) h\u1ea1i th\u00e2n Keo tai t\u01b0\u1ee3ng, keo lai t\u1ea1i huy\u1ec7n Y\u00ean B\u00ecnh v\u00e0 huy\u1ec7n Tr\u1ea5n Y\u00ean, t\u1ec9nh Y\u00ean B\u00e1i<\/td>\nSome biology characteristics, control Euwallacea fornicatus <\/em>Eichhoff (Coleoptera: Scolytidae) stem border Acacia mangium<\/em>, acacia hybrid in Yen Binh and Tran Yen districts of Yen Bai province<\/td>\nL\u00ea V\u0103n B\u00ecnh<\/td>\n149<\/td>\n<\/tr>\n
16<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a c\u01a1 ch\u1ea5t, nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m \u0111\u1ebfn s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a n\u1ea5m Coprinus radians <\/em>(Desm.) Fr. 1838 NV1 (t\u00ean m\u1edbi Coprinellus radians <\/em>(Desm.) Vilgalys, Hopple & Jacq. Johnson 2001)<\/td>\nThe effect of substract, temperature, humidity on growth of Coprinus radians (Desm.) Fr. 1838 NV1 (new name Coprinellus radians (Desm.) Vilgalys, Hopple & Jacq. Johnson 2001)<\/td>\nB\u00f9i Th\u1ecb Th\u1ee7y
\nHo\u00e0ng Th\u1ecb T\u00e1m
\n\u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc
\nNguy\u1ec5n Th\u1ecb H\u1eb1ng
\n\u0110\u1eb7ng T\u1ea5t Th\u00e0nh<\/td>\n		155<\/td>\n<\/tr>\n
17<\/td>\nT\u1ea1o v\u1eadt li\u1ec7u m\u1edbi t\u1eeb g\u1ed7 r\u1eebng tr\u1ed3ng cho c\u00f4ng nghi\u1ec7p s\u1ea3n xu\u1ea5t \u0111\u1ed3 m\u1ed9c<\/td>\nUsing plantation log to produce new wood material for furniture industry manufacturing<\/td>\nNguy\u1ec5n Quang Trung
\nH\u00e0 Ti\u1ebfn M\u1ea1nh
\nNguy\u1ec5n Th\u1ecb Ph\u01b0\u1ee3ng
\nPh\u1ea1m Th\u1ecb Thanh Mi\u1ec1n
\nNguy\u1ec5n Tr\u1ea5n H\u01b0ng<\/td>\n		162<\/td>\n<\/tr>\n
18<\/td>\nCh\u00ednh s\u00e1ch tr\u1ed3ng r\u1eebng \u1edf L\u00e0o v\u00e0 Vi\u1ec7t Nam – k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u00e0 c\u00e1c t\u00e1c \u0111\u1ed9ng<\/td>\nPlantation policy in Lao and Vietnam – Research results and impacts<\/td>\nNh\u00f3m t\u00e1c gi\u1ea3 th\u1ef1c hi\u1ec7n d\u1ef1 \u00e1n<\/td>\n171<\/td>\n<\/tr>\n
19<\/td>\nForest plantations and smallholder livelihoods in Lao and Vietnam<\/td>\nR\u1eebng tr\u1ed3ng v\u00e0 sinh k\u1ebf h\u1ed9 gia \u0111\u00ecnh \u1edf L\u00e0o v\u00e0 Vi\u1ec7t Nam<\/td>\nNh\u00f3m t\u00e1c gi\u1ea3 th\u1ef1c hi\u1ec7n d\u1ef1 \u00e1n<\/td>\n175<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U \u0110A D\u1ea0NG C\u00c2Y THU\u1ed0C \u1ede X\u00c3 LI\u00caN MINH,
\nHUY\u1ec6N V\u00d5 NHAI, T\u1ec8NH TH\u00c1I NGUY\u00caN<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n1*<\/sup>, Tr\u1ecbnh \u0110\u00ecnh Kh\u00e12<\/sup>, Nguy\u1ec5n Minh Hi\u1ebfu1<\/sup>, L\u1ed3 Di M\u1ec1nh1<\/sup>, V\u1ea3ng S\u1ea3o Hai1<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Th\u00e1i Nguy\u00ean
\n2<\/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

Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh nh\u1eb1m \u0111\u00e1nh gi\u00e1 \u0111a d\u1ea1ng ngu\u1ed3n c\u00e2y thu\u1ed1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ed9ng \u0111\u1ed3ng d\u00e2n t\u1ed9c Dao \u1edf x\u00e3 Li\u00ean Minh, huy\u1ec7n V\u00f5 Nhai, t\u1ec9nh Th\u00e1i Nguy\u00ean. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng g\u1ed3m c\u00f3: thu th\u1eadp m\u1eabu v\u1eadt, ph\u1ecfng v\u1ea5n, \u0111\u1ecbnh danh t\u00ean lo\u00e0i, \u0111\u00e1nh gi\u00e1 t\u00ednh \u0111a d\u1ea1ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c v\u00e0 \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 nguy c\u1ea5p c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y thu\u1ed1c. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 71 lo\u00e0i c\u00e2y thu\u1ed1c thu\u1ed9c 64 chi, 46 h\u1ecd \u0111\u01b0\u1ee3c c\u1ed9ng \u0111\u1ed3ng d\u00e2n t\u1ed9c \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng trong ph\u00f2ng v\u00e0 ch\u1eefa b\u1ec7nh cho ng\u01b0\u1eddi d\u00e2n. C\u00e2y thu\u1ed1c thu\u1ed9c 7 d\u1ea1ng s\u1ed1ng ch\u00ednh g\u1ed3m: th\u00e2n th\u1ea3o, d\u00e2y leo, g\u1ed7 nh\u1ecf, c\u00e2y b\u1ee5i, g\u1ed7 trung b\u00ecnh, g\u1ed7 l\u1edbn v\u00e0 c\u00e2y k\u00ed sinh. C\u00e2y th\u01b0\u1eddng ph\u00e2n b\u1ed1 \u1edf 4 d\u1ea1ng sinh c\u1ea3nh: r\u1eebng, v\u01b0\u1eddn, \u0111\u1ed3i v\u00e0 ven s\u00f4ng, ven su\u1ed1i, ao. Trong c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m thu\u1ed1c th\u00ec b\u1ed9 ph\u1eadn c\u1ea3 c\u00e2y, l\u00e1 v\u00e0 r\u1ec5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t. Nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 13 nh\u00f3m b\u1ec7nh \u0111\u01b0\u1ee3c ch\u1eefa tr\u1ecb b\u1eb1ng kinh nghi\u1ec7m s\u1eed d\u1ee5ng c\u00e2y thu\u1ed1c c\u1ee7a c\u1ed9ng \u0111\u1ed3ng d\u00e2n t\u1ed9c Dao \u1edf x\u00e3 Li\u00ean Minh, trong \u0111\u00f3 c\u00f3 6 nh\u00f3m b\u1ec7nh chi\u1ebfm t\u1ef7 l\u1ec7 cao nh\u1ea5t l\u00e0: b\u1ec7nh v\u1ec1 ti\u00eau h\u00f3a, th\u1eddi ti\u1ebft, x\u01b0\u01a1ng kh\u1edbp, th\u1eadn, v\u1ebft th\u01b0\u01a1ng v\u00e0 gan. C\u00f3 2 lo\u00e0i c\u00e2y thu\u1ed1c c\u1ea7n b\u1ea3o v\u1ec7 \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn l\u00e0: Canarium tramdenum<\/em> Dai & Yakovl. (Tr\u00e1m \u0111en), Stephania sinica<\/em> Diels (B\u00ecnh v\u00f4i t\u00e1n ng\u1eafn).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y thu\u1ed1c, \u0110a d\u1ea1ng, Li\u00ean Minh, V\u00f5 Nhai, Th\u00e1i Nguy\u00ean<\/td>\n<\/tr>\n

<\/a>Research on the diversity of medicinal plants in Lien Minh commune, Vo Nhai district, Thai Nguyen province<\/strong><\/p>\n

This study was conducted to assess the diversity of medicinal plant resources in Dao ethnic community in Lien Minh commune, Vo Nhai district, Thai Nguyen province. The methods used for collecting data consisted method of specimen collection, interview method, identification of the species name, method of medicinal plant resources diversity assessment, method of endangered medicinal plants level assessment. The results of research have identified initially 71 species of medicinal plants of 64 genera and 46 families which the ethnic community has used for diseases prevention and treatment. There are seven main life forms of the medicinal plants: herbaceous, vines, small wood trees, shrub, moderate wood trees, large wood trees, parasite. The trees distribution is often in many types of habitat: live in the forests, gardens, hills and along riverside, streams. In the parts used as medicine, the whole plant, leaves and roots are most used. The results show that there are 13 groups of disease treated which could be cured by the experience of using medicinal plants of Dao ethnic community in Lien Minh commune, of which 6 groups of diseases occupy the highest rate: digestive diseases, weather sickness, osteoarthritis disease, kidney disease, wound diseases, liver. There are 2 endangered medicinal plants: Canarium tramdenum<\/em> Dai & Yakovl, Stephania sinica<\/em> Diels.<\/p>\n

Keywords:<\/em><\/strong> Diversity, medicinal plants, Lien Minh commune, Vo Nhai district, Thai Nguyen province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M \u0110A D\u1ea0NG TH\u00c0NH PH\u1ea6N LO\u00c0I TH\u1ef0C V\u1eacT B\u1eacC CAO TR\u00caN C\u1ea0N T\u1ea0I \u0110\u1ea2O H\u00d2N LAO THU\u1ed8C KHU D\u1ef0 TR\u1eee SINH QUY\u1ec2N TH\u1ebe GI\u1edaI C\u00d9 LAO CH\u00c0M, TH\u00c0NH PH\u1ed0 H\u1ed8I AN, T\u1ec8NH QU\u1ea2NG NAM<\/p>\n

<\/a>Tr\u1ea7n Ng\u1ecdc To\u00e0n1<\/sup>, B\u00f9i V\u0103n Tu\u1ea5n1<\/sup>, Tr\u1ea7n H\u1eefu V\u1ef91<\/sup>, Ho\u00e0ng Qu\u1ed1c Huy1<\/sup>, L\u00ea Vi\u1ebft M\u1ea1nh1<\/sup>, Nguy\u1ec5n Th\u1ecb Thi\u00ean H\u01b0\u01a1ng1<\/sup>, Nguy\u1ec5n Th\u1ecb Kim Y\u1ebfn2<\/sup><\/p>\n

1<\/sup>Trung t\u00e2m B\u1ea3o t\u1ed3n \u0110a d\u1ea1ng sinh h\u1ecdc N\u01b0\u1edbc Vi\u1ec7t Xanh
\n2<\/sup>H\u1ed9i \u0111\u1ed9ng v\u1eadt h\u1ecdc Frankfurt<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh kh\u1ea3o s\u00e1t \u0111a d\u1ea1ng h\u1ec7 th\u1ef1c v\u1eadt b\u1eadc cao tr\u00ean c\u1ea1n \u1edf \u0111\u1ea3o H\u00f2n Lao thu\u1ed9c c\u1ee5m \u0111\u1ea3o C\u00f9 Lao Ch\u00e0m k\u00e9o d\u00e0i t\u1eeb th\u00e1ng 1\/2017 \u0111\u1ebfn th\u00e1ng 1\/2018. Nghi\u00ean c\u1ee9u \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra tuy\u1ebfn, \u0111\u1ecbnh danh lo\u00e0i v\u00e0 \u0111i\u1ec1u tra ph\u1ecfng v\u1ea5n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh hi\u1ec7n tr\u1ea1ng th\u00e0nh ph\u1ea7n lo\u00e0i v\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a h\u1ec7 th\u1ef1c v\u1eadt \u1edf khu v\u1ef1c n\u00e0y. K\u1ebft qu\u1ea3 th\u1ed1ng k\u00ea \u0111\u01b0\u1ee3c 304 lo\u00e0i th\u1ef1c v\u1eadt b\u1eadc cao tr\u00ean c\u1ea1n thu\u1ed9c 87 h\u1ecd, 40 b\u1ed9, 4 ng\u00e0nh th\u1ef1c v\u1eadt, b\u1ed5 sung 187 lo\u00e0i thu\u1ed9c 68 h\u1ecd cho h\u1ec7 th\u1ef1c v\u1eadt t\u1ea1i khu v\u1ef1c. Trong \u0111\u00f3 c\u00f3 5 lo\u00e0i qu\u00fd hi\u1ebfm c\u1ea7n \u0111\u01b0\u1ee3c \u01b0u ti\u00ean b\u1ea3o t\u1ed3n l\u00e0 Cam \u0110\u01b0\u1eddng (Limnocitrus littoralis)<\/em>, G\u1ee5 lau (Sindora tonkinensis)<\/em>, S\u1ebfn D\u01b0a (Madhuca pasquieri), <\/em>B\u00f9 l\u1ed9t (Melientha suavis), <\/em>Thi\u00ean tu\u1ebf Rumphius (Cycas rumphii)<\/em>. Ng\u01b0\u1eddi d\u00e2n tr\u00ean \u0111\u1ea3o khai th\u00e1c v\u00e0 s\u1eed d\u1ee5ng 81 lo\u00e0i th\u1ef1c v\u1eadt cho m\u1ee5c \u0111\u00edch th\u1ef1c ph\u1ea9m \u0103n u\u1ed1ng v\u00e0 c\u00e2y c\u1ea3nh \u0111\u1eb7c bi\u1ec7t l\u00e0 52 lo\u00e0i s\u1eed d\u1ee5ng l\u00e0m thu\u1ed1c c\u00e2y. Nh\u1eefng k\u1ebft qu\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y g\u00f3p ph\u1ea7n x\u00e2y d\u1ef1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u khoa h\u1ecdc cho c\u00f4ng t\u00e1c b\u1ea3o t\u1ed3n \u0111a d\u1ea1ng sinh h\u1ecdc t\u1ea1i C\u00f9 Lao Ch\u00e0m.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>C\u00f9 Lao Ch\u00e0m, \u0111a d\u1ea1ng, \u0111\u1ea3o H\u00f2n Lao, th\u1ef1c v\u1eadt b\u1eadc cao tr\u00ean c\u1ea1n<\/td>\n<\/tr>\n

\n

<\/a>Characteristic of terrestrial plant species diversity in Hon Lao island, Cu Lao Cham biosphere reserve, Quang Nam province<\/strong><\/p>\n

This article shows the results of an envestigation the terrestrial flora in Hon Lao Island, Cu Lao Cham archipelago from January, 2017 to January, 2018. The research used methods such as line survey, species identification, and interview to determine the status of flora species composition and value for using. The results recorded 304 terrestrial plant species belonging to 87 families, 40 orders, 4 plant branches, updated of 187 species belonging to 68 families. In which, there are 5 priority species should be prioritized to protect: Limnocitrus littoralis<\/em>, Sindora tonkinensis<\/em>, Madhuca pasquieri<\/em>, Melaleuca suavis, Cycas<\/em> rumphius.<\/em> 81 plant species were exploited for food and ornament purposes, especially 52 plant species were used for medicine. The results of this study contribute a part of scientific database for biodiversity conservation in Cu Lao Cham.<\/p>\n

Keywords: <\/em><\/strong>Cu Lao Cham, diversity, Hon Lao island, terrestrial flora<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>C\u00c1C GI\u1ed0NG KEO LAI M\u1edaI CHO T\u1ec8NH PH\u00da TH\u1ecc V\u00c0 H\u00d2A B\u00ccNH<\/p>\n

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

Kh\u1ea3o nghi\u1ec7m 12 d\u00f2ng keo lai m\u1edbi (BV71, BV73, BV75, BV33, TB1, TB11, KL2, KL20, MA1, AM2, AM3 v\u00e0 AH7) \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1eeb n\u0103m 2014 t\u1ea1i \u0110oan H\u00f9ng – Ph\u00fa Th\u1ecd, L\u01b0\u01a1ng S\u01a1n, K\u1ef3 S\u01a1n v\u00e0 \u0110\u00e0 B\u1eafc – H\u00f2a B\u00ecnh theo \u0111\u00fang ti\u00eau chu\u1ea9n TCVN 8761 – 1:2017. \u0110\u00e1nh gi\u00e1 \u1edf tu\u1ed5i 3 v\u00e0 4,5 cho th\u1ea5y sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c d\u00f2ng \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m \u0111\u1ec1u c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u00e0ng v\u1ec1 c\u1ea3 sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u cao v\u00e0 th\u1ec3 t\u00edch th\u00e2n c\u00e2y. Tuy nhi\u00ean t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 \u0111\u1ed9 th\u1eb3ng th\u00e2n gi\u1eefa c\u00e1c d\u00f2ng kh\u00f4ng c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t. Nhi\u1ec1u d\u00f2ng keo lai m\u1edbi c\u00f3 sinh tr\u01b0\u1edfng v\u01b0\u1ee3t tr\u1ed9i h\u01a1n xu\u1ea5t x\u1ee9 Oriomo c\u1ee7a Keo tai t\u01b0\u1ee3ng v\u00e0 3 d\u00f2ng BV10, BV16, BV32 \u0111\u00e3 \u0111\u01b0\u1ee3c tr\u1ed3ng ph\u1ed5 bi\u1ebfn tr\u00ean to\u00e0n qu\u1ed1c. T\u1ea1i Ph\u00fa Th\u1ecd, c\u00e1c d\u00f2ng keo lai m\u1edbi BV33, TB1, BV75, TB11 v\u00e0 KL20 \u0111\u1ec1u sinh tr\u01b0\u1edfng t\u1ed1t. \u1ede 4,5 tu\u1ed5i c\u00e1c d\u00f2ng keo lai n\u00e0y \u0111\u1ea1t n\u0103ng su\u1ea5t tr\u00ean 25 m3<\/sup>\/ha\/n\u0103m, v\u01b0\u1ee3t h\u01a1n n\u0103ng su\u1ea5t c\u1ee7a xu\u1ea5t x\u1ee9 Oriomo c\u1ee7a Keo tai t\u01b0\u1ee3ng t\u1eeb 10,2 t\u1edbi 27,7%. T\u1ea1i H\u00f2a B\u00ecnh, 3 d\u00f2ng keo lai l\u00e0 MA1, AM3, BV73 \u0111\u1ec1u l\u00e0 nh\u1eefng d\u00f2ng keo lai m\u1edbi c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u01b0\u1ee3t tr\u1ed9i v\u1edbi h\u1ed7n h\u1ee3p c\u00e1c d\u00f2ng BV10, BV16 v\u00e0 BV32 t\u1eeb 15,9 – 56,2%. N\u0103ng su\u1ea5t c\u1ee7a c\u00e1c d\u00f2ng n\u00e0y \u0111\u1ea1t t\u1eeb 18,1 – 25,5 m3<\/sup>\/ha\/n\u0103m. C\u00e1c d\u00f2ng tr\u00ean c\u1ea7n \u0111\u01b0\u1ee3c b\u1ed5 sung v\u00e0o t\u1eadp \u0111o\u00e0n gi\u1ed1ng c\u00e2y tr\u1ed3ng c\u1ee7a 2 t\u1ec9nh v\u00e0 c\u0169ng c\u1ea7n t\u1eadp trung ph\u00e1t tri\u1ec3n m\u1ea1nh trong th\u1eddi gian t\u1edbi.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>Keo lai, Ph\u00fa Th\u1ecd, H\u00f2a B\u00ecnh, kh\u1ea3o nghi\u1ec7m d\u00f2ng
\nv\u00f4 t\u00ednh<\/td>\n<\/tr>\n

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New clones of Acacia hybrid in Phu Tho and Hoa Binh<\/strong><\/p>\n

In 2014, clonal tests of 12 new clones of Acacia hybrid (BV71, BV73, BV75, BV33, TB1, TB11, KL2, KL20, MA1, AM2, AM3 v\u00e0 AH7) were established by national standard of TCVN 8761 – 1:2017 in \u0110oan H\u00f9ng – Ph\u00fa Th\u1ecd, L\u01b0\u01a1ng S\u01a1n, K\u1ef3 S\u01a1n and \u0110\u00e0 B\u1eafc – H\u00f2a B\u00ecnh. Evaluation of these clonal tests showed that there were significant differences between the clones in diameter growth, height growth and tree – standing volume at the age of 3 and 4.5 years. However, the survival rate and stem straigthness between the clones did not have a distinct difference. Many new hybrid clones grew better than Oriomo provenance of Acacia mangium<\/em> and the mix clones of BV10, BV16, BV32.<\/p>\n

In Phu Tho, the new hybrid clones of BV33, TB1, BV75, TB11 and KL20 outperformed. At 4.5 – year old the MAI of these clones reached over 25 m3<\/sup>\/ha\/year. Volume of these clones exceeded from 10.2 to 27.7% compared to the volume of the origin of Oriomo provenance of Acacia mangium<\/em>. In Hoa Binh, volume growth of three clones of MA1, AM3 and BV73 also greater 15.9 to 56.2% than the mean value of the mix clones of BV10, BV16 and BV32. The yield of these clones reached from 18.1 to 25.5 m3<\/sup>\/ha\/year. Therefore, these elite clones in Phu Tho and Hoa Binh should be added to the province’s new germplasms as well as need to be concentrated on release and deployment in the future.<\/p>\n

Keywords: <\/em><\/strong>Acacia hybrid, Phu Tho, Hoa Binh, clonal test<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>KH\u1ea2 N\u0102NG C\u1ea2I THI\u1ec6N V\u1ec0 SINH TR\u01af\u1edeNG
\nV\u00c0 CH\u1ea4T L\u01af\u1ee2NG TH\u00c2N C\u00c2Y KEO TAI T\u01af\u1ee2NG
\nTRONG C\u00c1C KH\u1ea2O NGHI\u1ec6M H\u1eacU TH\u1ebe TH\u1ebe H\u1ec6 2
\n\u1ede NGH\u1ec6 AN V\u00c0 B\u00ccNH D\u01af\u01a0NG, TU\u1ed4I 8 – 9<\/p>\n

<\/a>La \u00c1nh D\u01b0\u01a1ng1<\/sup>, Ph\u00ed H\u1ed3ng H\u1ea3i1<\/sup>, Tr\u1ecbnh V\u0103n Hi\u1ec7u2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u bi\u1ebfn d\u1ecb di truy\u1ec1n Keo tai t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean 2 kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf th\u1ebf h\u1ec7 2 t\u1ea1i Qu\u1ef3 H\u1ee3p – Ngh\u1ec7 An v\u00e0 B\u00e0u B\u00e0ng – B\u00ecnh D\u01b0\u01a1ng, \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00f4ng tin di truy\u1ec1n c\u1ee7a c\u00e1c t\u00ednh tr\u1ea1ng sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y sau 8 – 9 n\u0103m tr\u1ed3ng nh\u1eb1m cung c\u1ea5p c\u01a1 s\u1edf khoa h\u1ecdc cho ch\u01b0\u01a1ng tr\u00ecnh c\u1ea3i thi\u1ec7n gi\u1ed1ng Keo tai t\u01b0\u1ee3ng \u1edf Vi\u1ec7t Nam. K\u1ebft qu\u1ea3 cho th\u1ea5y sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y gi\u1eefa c\u00e1c gia \u0111\u00ecnh t\u1ea1i hai kh\u1ea3o nghi\u1ec7m c\u00f3 s\u1ef1 ph\u00e2n h\u00f3a r\u00f5 r\u1ec7t. N\u0103m gia \u0111\u00ecnh \u01b0u vi\u1ec7t v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ea1i 2 kh\u1ea3o nghi\u1ec7m c\u00f3 \u0111\u1ed9 v\u01b0\u1ee3t t\u1eeb 48,0 t\u1edbi 86,7% so v\u1edbi trung b\u00ecnh kh\u1ea3o nghi\u1ec7m. H\u1ec7 s\u1ed1 di truy\u1ec1n theo ngh\u0129a h\u1eb9p c\u1ee7a c\u00e1c t\u00ednh tr\u1ea1ng sinh tr\u01b0\u1edfng t\u1ea1i hai kh\u1ea3o nghi\u1ec7m \u0111\u1ec1u \u1edf m\u1ee9c th\u1ea5p \u0111\u1ebfn trung b\u00ecnh v\u00e0 c\u00f3 xu h\u01b0\u1edbng t\u0103ng theo tu\u1ed5i (h2 = 0,07 – 0,42), h\u1ec7 s\u1ed1 di truy\u1ec1n c\u00e1c ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y \u0111\u1ec1u \u1edf m\u1ee9c th\u1ea5p v\u00e0 \u1ed5n \u0111\u1ecbnh theo c\u1ea5p tu\u1ed5i (h2 = 0,05 – 0,21). H\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed9ng di truy\u1ec1n l\u0169y t\u00edch c\u1ee7a c\u00e1c t\u00ednh tr\u1ea1ng n\u00e0y c\u0169ng bi\u1ebfn \u0111\u1ed9ng t\u1eeb th\u1ea5p \u0111\u1ebfn cao v\u00e0 c\u00f3 xu h\u01b0\u1edbng gi\u1ea3m d\u1ea7n theo tu\u1ed5i (CVa = 2,5 – 42,4%). T\u0103ng thu di truy\u1ec1n l\u00fd thuy\u1ebft c\u1ee7a c\u00e1c t\u00ednh tr\u1ea1ng sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao t\u1ea1i kh\u1ea3o nghi\u1ec7m Qu\u1ef3 H\u1ee3p (tu\u1ed5i 9) \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1eeb 8,8 – 13,9% v\u00e0 t\u1eeb 4,4 – 8,8% cho ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y, c\u00f2n t\u1ea1i kh\u1ea3o nghi\u1ec7m B\u00e0u B\u00e0ng l\u00e0 t\u1eeb 4,6 – 19,9% cho sinh tr\u01b0\u1edfng, t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u1ed9 th\u1eb3ng th\u00e2n l\u00e0 16,5%. Do v\u1eady kh\u1ea3 n\u0103ng c\u1ea3i thi\u1ec7n v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y l\u00e0 ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c. T\u1ea1i tu\u1ed5i 8 – 9, t\u01b0\u01a1ng quan ki\u1ec3u gen – ho\u00e0n c\u1ea3nh gi\u1eefa hai l\u1eadp \u0111\u1ecba n\u00e0y l\u00e0 r\u1ea5t th\u1ea5p v\u00e0 kh\u00f4ng c\u00f3 \u00fd ngh\u0129a hay n\u00f3i c\u00e1ch kh\u00e1c c\u00e1c t\u00ednh tr\u1ea1ng ch\u1ecbu \u1ea3nh h\u01b0\u1edfng m\u1ea1nh c\u1ee7a t\u01b0\u01a1ng t\u00e1c ki\u1ec3u gen – ho\u00e0n c\u1ea3nh.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>Keo tai t\u01b0\u1ee3ng, kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf th\u1ebf h\u1ec7 2, h\u1ec7 s\u1ed1 di truy\u1ec1n, t\u0103ng thu di truy\u1ec1n l\u00fd thuy\u1ebft, t\u01b0\u01a1ng t\u00e1c ki\u1ec3u gen – ho\u00e0n c\u1ea3nh<\/td>\n<\/tr>\n

\n

<\/a>Genetic control on growth ND stem quality of Aacia mangium<\/em> in second generation progeny tests 8 – 9age<\/strong><\/p>\n

This study investigates the genetic control of 8 – 9 year old 2nd gen progeny Acacia mangium<\/em> located at Quy Hop (Nghe An), Bau Bang (Binh Duong). The aim of the studied was to increase the understanding of genetic factors associated with growth and stem quality (such as stem straightness, axis persistence and branch size), and their genotype by environment interaction with growth and stem quality traits to facilitate the improvement of A.mangium<\/em> in Vietnam. Our results showed that there was significant difference on growth traits and stem quality among families in the two trials. The 5 families with superior growth and stem quality traits exhibited significantly greater stem volume (exceeded from 48.0 to 86.7%) compared to the average. Narrow sense heritability of growth traits in both trials were low to moderate but have a tendency to increase with age (h2 = 0.07 – 0.42), heritability of stem quality indicators are low and stable according to the age level (h2 = 0.05 – 0.21). At two sites, the coefficient of additive variation (CVa) ranged from low to high and had a tendency to decrease gradually with age (CVa = 2.5 – 42.4%). Estimated genetic gains of growth at Quy Hop trial (age 9) achieved between 8.8 – 13.9% and for stem quality between 4.4 – 8.8%, while at Bau Bang trial the genetic gain for growth was between 4.6 – 19.9%, corresponding to 16.5% stem straightness. Therefore, it is feasible to improve the growth and quality of the stem. At 8 – 9 years old, the genotype by environment interaction effects between the two sites was not important for growth and stem straightness.<\/p>\n

Keywords: <\/em><\/strong>Acacia mangium<\/em>, heristablity, genetic gain, GxE<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>SINH TR\u01af\u1edeNG C\u1ee6A C\u00c2Y CON TAM TH\u1ea4T
\n(Panax pseudogingseng <\/em>Wall.) TRONG \u0110I\u1ec0U KI\u1ec6N NH\u00c0 K\u00cdNH T\u1ea0I \u0110\u00c0 L\u1ea0T, L\u00c2M \u0110\u1ed2NG<\/p>\n

<\/a>Ho\u00e0ng Thanh Tr\u01b0\u1eddng, Giang Th\u1ecb Thanh<\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung b\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Tam Th\u1ea5t (Panax pseudoginseng<\/em> Wall.) l\u00e0 d\u01b0\u1ee3c li\u1ec7u truy\u1ec1n th\u1ed1ng \u1edf Vi\u1ec7t Nam. C\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c di th\u1ef1c \u0111\u1ebfn L\u00e2m \u0110\u1ed3ng \u0111\u1ec3 tr\u1ed3ng th\u1eed nghi\u1ec7m. Th\u1eed nghi\u1ec7m \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u1edbi v\u00f9ng kh\u00ed h\u1eadu \u00f4n ho\u00e0 th\u00f4ng qua c\u00f4ng th\u1ee9c ph\u1ed1i tr\u1ed9n \u0111\u1ea5t v\u00e0 x\u01a1 d\u1eeba \u1edf th\u00e0nh ph\u1ed1 \u0110\u00e0 L\u1ea1t, L\u00e2m \u0110\u1ed3ng. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c quan s\u00e1t trong nh\u00e0 k\u00ednh. Nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai hai nh\u00e2n t\u1ed1 v\u00e0 phi tham s\u1ed1 Kruskal – Wallis \u0111\u1ec3 ph\u00e2n t\u00edch k\u1ebft qu\u1ea3. Sau 8 th\u00e1ng, k\u1ebft qu\u1ea3 ch\u1ec9 ra r\u1eb1ng t\u1ef7 l\u1ec7 s\u1ed1ng t\u1ed1t nh\u1ea5t c\u1ee7a Tam Th\u1ea5t l\u00e0 64% (60% \u0111\u1ea5t + 40% x\u01a1 d\u1eeba) v\u00e0 60% (80% \u0111\u1ea5t + 20% x\u01a1 d\u1eeba). Ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai th\u00ec 2 nh\u00e2n t\u1ed1 cho th\u1ea5y chi\u1ec1u d\u00e0i cu\u1ed1ng l\u00e1 v\u00e0 th\u1eddi gian th\u00ed nghi\u1ec7m \u0111\u00e3 \u1ea3nh h\u01b0\u1edfng c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea l\u00ean t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a Tam th\u1ea5t; trong \u0111\u00f3 hai c\u00f4ng th\u1ee9c gi\u00e1 th\u1ec3 60% \u0111\u1ea5t – 40% x\u01a1 d\u1eeba v\u00e0 40% \u0111\u1ea5t – 60% x\u01a1 d\u1eeba l\u00e0 c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng t\u1ed1t nh\u1ea5t. Ki\u1ec3m \u0111\u1ecbnh s\u1ef1 kh\u00e1c bi\u1ec7t chi\u1ec1u d\u00e0i cu\u1ed1ng l\u00e1 trong c\u00e1c c\u00f4ng th\u1ee9c ph\u1ed1i tr\u1ed9n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p Kruskal – Wallis; k\u1ebft qu\u1ea3 l\u00e0 p – value < 2.2e – 16 (Sig. = 0,05, Kruskal – Wallis chi – squared = 84.78, df = 4) nh\u1ecf h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi 0,05 n\u00ean c\u00f3 \u00edt nh\u1ea5t m\u1ed9t kh\u00e1c bi\u1ec7t c\u00f3 \u00fd ngh\u0129a gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c ph\u1ed1i tr\u1ed9n gi\u00e1 th\u1ec3; trong \u0111\u00f3, hai c\u00f4ng th\u1ee9c cho chi\u1ec1u d\u00e0i cu\u1ed1ng l\u00e1 t\u1ed1t nh\u1ea5t sau 8 th\u00e1ng theo d\u00f5i l\u00e0 20% \u0111\u1ea5t + 80% x\u01a1 d\u1eeba (10,07 \u00b1 1,38 (SD) cm) v\u00e0 40 \u0111\u1ea5t + 60% x\u01a1 d\u1eeba (8,93 \u00b1 1,36 cm). Qua th\u00ed nghi\u1ec7m, c\u00f4ng th\u1ee9c ph\u00f9 h\u1ee3p nh\u1ea5t cho sinh tr\u01b0\u1edfng c\u00e2y con Tam th\u1ea5t \u1edf v\u01b0\u1eddn \u01b0\u01a1m l\u00e0 40% \u0111\u1ea5t + 60% x\u01a1 d\u1eeba. C\u00e1c ph\u00e2n t\u00edch \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean ph\u1ea7n m\u1ec1m Rstudio.<\/p>\n

T\u1eeb kh\u00f3a: Nh\u00e0 k\u00ednh, sinh tr\u01b0\u1edfng, Tam th\u1ea5t, x\u01a1 d\u1eeba<\/em><\/strong><\/td>\n<\/tr>\n

\n

<\/a>Growth assessment of Tam that seedlings (Panax pseudogingseng<\/em> Wall.) in greenhouse of Da Lat, Lam Dong<\/strong><\/p>\n

Panax pseudoginseng<\/em> Wall. is a trational medicine in Vietnam. It was acclimatized to Lam Dong provine for cultivation. Experiment to evaluate the adaptability to climate zone through mixed coir – soil treatments in Dalat, Lam Dong province. The testing was observed in greenhouse. The experiment was analyzed through the twoway anova analyze and non – parametric Kruskal – Wallis method. After 8 month, the results showed that the best survival rate of P. pseudogingseng<\/em> is 64% (60% soil+ 40%coir) and 60% (40% soil + 60%coir) respectively. The twoway anova analyze showed that mixed treatment and timely test was effected results of test; in that, the best survival rate was the two mixed treatments 60% soil – 40% coir v\u00e0 40% soil – 60% coil. Kruskal – Wallis test was showed that p – value < 2.2e – 16 (Sig. = 0,05, Kruskal – Wallis chi – squared = 84.78, df = 4) is much smaller 0,05. So that, at least one significant difference between the mixed – treatments. After 8 month, two mixed treatments which have the best length of petiole is 20% soil + 80% coir (10,07 \u00b1 1,38 cm (SD)) and 40% soil + 60% coir (8,93 \u00b1 1,36 cm). After the test, the most suitable mixed – treatment for growth of seedlings in the nursery is 40% soil + 60% coir. The analyzes was completed by Rstudio software.<\/p>\n

Keywords: Greenhouse, growth, <\/em>Panax pseudogingseng, coir<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>SINH TR\u01af\u1edeNG, N\u0102NG SU\u1ea4T V\u00c0 CH\u1ea4T L\u01af\u1ee2NG H\u1ea0T
\nC\u1ee6A M\u1ed8T S\u1ed0 D\u00d2NG M\u1eaeC CA T\u1ea0I LAI CH\u00c2U<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb V\u00e2n Anh, Tr\u1ea7n Ho\u00e0ng Qu\u00fd, Nguy\u1ec5n Quang H\u01b0ng, Ninh Vi\u1ec7t Kh\u01b0\u01a1ng, B\u00f9i Thanh T\u00e2n, Nguy\u1ec5n Th\u1ecb Ho\u00e0i Anh<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/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 v\u00e0 n\u0103ng su\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng qu\u1ea3, h\u1ea1t M\u1eafc ca tr\u1ed3ng t\u1ea1i Lai Ch\u00e2u cho th\u1ea5y, sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c, chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh t\u00e1n c\u1ee7a c\u00e1c d\u00f2ng M\u1eafc ca \u0111\u01b0\u1ee3c tr\u1ed3ng h\u1ed7n giao t\u1ea1i huy\u1ec7n Tam \u0110\u01b0\u1eddng, T\u00e2n Uy\u00ean v\u00e0 th\u00e0nh ph\u1ed1 Lai Ch\u00e2u t\u1ea1i tu\u1ed5i 5 c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t, trong \u0111\u00f3 r\u1eebng tr\u1ed3ng M\u1eafc ca sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t trong \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba t\u1ea1i th\u00e0nh ph\u1ed1 Lai Ch\u00e2u. V\u1edbi r\u1eebng tr\u1ed3ng h\u1ed7n giao 6 d\u00f2ng M\u1eafc ca \u0111\u1ebfn tu\u1ed5i 6 cho th\u1ea5y, c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng c\u1ee7a 6 d\u00f2ng v\u00f4 t\u00ednh ch\u01b0a c\u00f3 s\u1ef1 sai kh\u00e1c. C\u00e1c d\u00f2ng H2, OC, 816 c\u00f3 sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c \u1edf tu\u1ed5i 6 \u0111\u1ea1t trung b\u00ecnh l\u00e0 10,1 cm, chi\u1ec1u cao \u0111\u1ea1t 4,6 m v\u00e0 \u0111\u01b0\u1eddng k\u00ednh t\u00e1n \u0111\u1ea1t 3,0 m. N\u0103ng su\u1ea5t qu\u1ea3 ch\u01b0a c\u00f3 s\u1ef1 sai kh\u00e1c gi\u1eefa c\u00e1c d\u00f2ng, c\u00e1c d\u00f2ng H2, OC v\u00e0 816 c\u00f3 n\u0103ng su\u1ea5t qu\u1ea3 \u0111\u1ea1t trung b\u00ecnh tr\u00ean 4 kg\/c\u00e2y. C\u00e1c d\u00f2ng H2, 849 v\u00e0 816 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng qu\u1ea3 t\u1ed1t nh\u1ea5t v\u1edbi t\u1ef7 l\u1ec7 nh\u00e2n l\u1edbn, chi\u1ebfm trung b\u00ecnh tr\u00ean 30% kh\u1ed1i l\u01b0\u1ee3ng qu\u1ea3. C\u00e1c d\u00f2ng 246, H2, 816 v\u00e0 842 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t t\u1ed1t nh\u1ea5t v\u1edbi h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t b\u00e9o, protein v\u00e0 ch\u1ea5t x\u01a1 c\u00e2n b\u1eb1ng. Vi\u1ec7c ch\u0103m s\u00f3c r\u1eebng tr\u1ed3ng M\u1eafc ca tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh Lai Ch\u00e2u c\u00f2n ch\u01b0a \u0111\u01b0\u1ee3c quan t\u00e2m nhi\u1ec1u, c\u00e1c bi\u1ec7n ph\u00e1p b\u00f3n ph\u00e2n, t\u01b0\u1edbi n\u01b0\u1edbc v\u00e0 t\u1ec9a c\u00e0nh c\u00f2n h\u1ea1n ch\u1ebf n\u00ean n\u0103ng su\u1ea5t qu\u1ea3 c\u00f2n ch\u01b0a \u1ed5n \u0111\u1ecbnh.<\/p>\n

T\u1eeb kh\u00f3a: Ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t, M\u1eafc ca, Lai Ch\u00e2u, sinh tr\u01b0\u1edfng<\/em><\/strong><\/td>\n<\/tr>\n

\n

<\/a>Growth, productivity and nut quality of some Macadamia clones in Lai Chau province<\/strong><\/p>\n

The study has shown that there was a significant difference of diameter at ground level, height and crown diameter of mixed Macadamia forest at the age of five in Tam Duong District, Tan Uyen District and Lai Chau City, it was showed the best growth of Macadamia in Lai Chau City. There wasn\u2019t a significant difference of growth and productivity of mixed six clones of Macadamia at the age of 6, the clones H2, OC, 816 had the average diameter at ground level of 10,1 cm, height of 4,6 m and crown diameter of 3 m at the surveyed time. The average productivity of the clones H2, OC, 816 was above 4 kg per tree. The fruit quality of 246, H2, 816 and 842 were the best with the balance of lipid, protein and cellulozo. The practice of Macadamia plantation in the province wasn\u2019t concerned so much, the practice of fertilizing, watering and pruning is limited so fruit yield is low and unstable.<\/p>\n

Keywords: Quality of nut, Macadamia, Lai Chau, growth<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U TR\u00daC R\u1eeaNG V\u00c0 T\u00c1I SINH T\u1ef0 NHI\u00caN
\nC\u1ee6A LO\u00c0I TR\u1eaeC NAM B\u1ed8 (Dalbergia cochinchinensis <\/em>Pierre.) \u1ede DI LINH, L\u00c2M \u0110\u1ed2NG<\/p>\n

<\/a>B\u00f9i Xu\u00e2n Ti\u1ebfn1<\/sup>, Nguy\u1ec5n Th\u00e0nh M\u1ebfn2<\/sup>, Ho\u00e0ng Thanh Tr\u01b0\u1eddng2<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng Ph\u1ed5 th\u00f4ng D\u00e2n t\u1ed9c b\u00e1n tr\u00fa Trung h\u1ecdc c\u01a1 s\u1edf S\u01a1n \u0110i\u1ec1n
\n2<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m Nghi\u1ec7p Nam Trung b\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

C\u00e2y Tr\u1eafc nam b\u1ed9 (Dalbergia cochinchinensis<\/em> Pierre.) (Fabaceae) c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Tr\u1eafc \u0111\u1ecf, Tr\u1eafc \u0111en, C\u1ea9m lai nam b\u1ed9…, l\u00e0 lo\u00e0i \u0111\u1eb7c h\u1eefu c\u1ee7a khu v\u1ef1c \u0110\u00f4ng Nam \u00c1. T\u1ea1i t\u1ec9nh L\u00e2m \u0110\u1ed3ng, lo\u00e0i n\u00e0y c\u00f3 ph\u00e2n b\u1ed1 t\u1eadp trung \u1edf ki\u1ec3u r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh thu\u1ed9c huy\u1ec7n Di Linh. Tr\u1eafc nam b\u1ed9 hi\u1ec7n \u0111\u01b0\u1ee3c IUCN, 2018 x\u1ebfp h\u1ea1ng VU; S\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam, 2007 x\u1ebfp h\u1ea1ng EN. Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac t\u1ed5 th\u00e0nh, m\u1ed1i quan h\u1ec7 sinh th\u00e1i lo\u00e0i, ph\u00e2n b\u1ed1 N\/D, ph\u00e2n b\u1ed1 N\/H v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m t\u00e1i sinh t\u1ef1 nhi\u00ean lo\u00e0i Tr\u1eafc nam b\u1ed9. C\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh c\u00e2y g\u1ed7 \u1edf l\u00e2m ph\u1ea7n nghi\u00ean c\u1ee9u Tr\u1eafc nam b\u1ed9 nh\u01b0 sau: 12,27% Tr\u00e2m tr\u1eafng + 9,65% C\u00e1m + 7,23% B\u1eddi l\u1eddi + 7,06% D\u1ea7u tr\u00e0 beng + 6,78% Kh\u00e1o + 6,34% Tr\u1eafc nam b\u1ed9 + 5,82% D\u1ebb m\u00f3c + 44,86% Lo\u00e0i kh\u00e1c. V\u1ec1 quan h\u1ec7 sinh th\u00e1i, Tr\u1eafc nam b\u1ed9 c\u00f3 m\u1ed1i quan h\u1ec7 ng\u1eabu nhi\u00ean v\u1edbi c\u00e1c lo\u00e0i \u01b0u th\u1ebf trong t\u1ed5 th\u00e0nh (IV \u2265 5%) nh\u01b0 Tr\u00e2m tr\u1eafng, C\u00e1m, B\u1eddi l\u1eddi, D\u1ea7u tr\u00e0 beng, Kh\u00e1o v\u00e0 D\u1ebb m\u00f3c. \u0110\u1ed1i v\u1edbi ph\u00e2n b\u1ed1 N\/D, Tr\u1eafc nam b\u1ed9 t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf c\u1ea5p k\u00ednh t\u1eeb 6 – 10 cm, trong qu\u1ea7n th\u1ec3 kh\u00f4ng ph\u00e1t hi\u1ec7n c\u00e2y tr\u01b0\u1edfng th\u00e0nh \u1edf c\u1ea5p k\u00ednh \u2265 30 cm, do b\u1ecb khai th\u00e1c m\u1ea1nh trong th\u1eddi gian qua. \u0110\u1ed1i v\u1edbi ph\u00e2n b\u1ed1 N\/H, Tr\u1eafc nam b\u1ed9 t\u1eadp trung \u1edf c\u1ea5p chi\u1ec1u cao t\u1eeb 4 – 8 m. Tr\u1eafc nam b\u1ed9 c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i sinh ch\u1ed3i kh\u00e1 m\u1ea1nh (t\u1ef7 l\u1ec7 73,3%) nh\u01b0ng t\u00e1i sinh h\u1ea1t k\u00e9m. V\u00ec v\u1eady, c\u1ea7n c\u00f3 bi\u1ec7n ph\u00e1p qu\u1ea3n l\u00fd, b\u1ea3o v\u1ec7 ch\u1eb7t ch\u1ebd v\u00e0 x\u00fac ti\u1ebfn t\u00e1i sinh t\u1ef1 nhi\u00ean nh\u1eb1m ph\u1ee5c h\u1ed3i c\u00e1c qu\u1ea7n th\u1ec3 Tr\u1eafc nam b\u1ed9.<\/p>\n

T\u1eeb kh\u00f3a: Tr\u1eafc nam b\u1ed9, IVI%, c\u1ea5u tr\u00fac, t\u00e1i sinh t\u1ef1 nhi\u00ean, t\u1ec9nh L\u00e2m \u0110\u1ed3ng<\/em><\/strong><\/td>\n<\/tr>\n

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<\/a>Characteristics of forest structure and natural regeneration of Dalbergia cochinchiensis<\/em> in Di Linh district, Lam \u0110ong provine<\/strong><\/p>\n

Dalbergia cochinchinensis<\/em> Pierre. (Fabaceae) is an endemic species in Southeast Asia, called Tr\u1eafc \u0111\u1ecf, Tr\u1eafc \u0111en, C\u1ea9m lai nam b\u1ed9… in Vietnamese name. It concentrates in evergreen forest areas in Di Linh district, Lam \u0110ong province, Vietnam. IUCN 2018 and Vietnam Red Data Book, 2007 set this species at VU and EN levels. The research determined characteristics of forest structure, ecological relationship, N\/D and N\/H distributions and natural regeneration of D. cochinchinensis.<\/em> Importance Value Index (IVI%) of timber species: 12.27% Syzygium <\/em>sp. + 9.65% Parinari annamensis<\/em> + 7.23% Litsea<\/em> sp. + 7.06% Dipterocarpus obtusifolia<\/em> + 6.78% Machilus parviflora<\/em> + 6.34% Dalbergia cochinchinensis<\/em> + 5.82% Lithocarpus echinotholus<\/em> + 44.86% other species. In ecological relationship, D. cochinchinensis <\/em>has random interaction with 6 other dominant species (IV% \u2265 5%). Calculating results of the N\/D and N\/H distribution show that D. cochinchinensis<\/em> concentrates on 6 – 10 cm diameter and 4 – 8 m high mainly. Populations of D. cochinchinensis<\/em> have not mature trees in DBH \u2265 30 cm because they were exploited strongly before now. Natural regeneration of D. cochinchinensis<\/em> is fairly well but coppice regeneration (73.3%) is better than natural seeding (26.7%). Accordingly, populations of D. cochinchinensis <\/em>in Di Linh district need to be managed closely and promote naturally regeneration for stable restoration.<\/p>\n

Keywords: Dalbergia cochinchinensis, IV%, structure, natural regeneration, Lam \u0110ong provine<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>SINH KH\u1ed0I C\u1ee6A QU\u1ea6N TH\u1ec2 \u0110\u01af\u1edaC \u0110\u00d4I (Rhizophora apiculata<\/em> Blume) TR\u1ed2NG T\u1ea0I KHU D\u1ef0 TR\u1eee SINH QUY\u1ec2N R\u1eeaNG NG\u1eacP M\u1eb6N C\u1ea6N GI\u1edc, TH\u00c0NH PH\u1ed0 H\u1ed2 CH\u00cd MINH<\/p>\n

<\/a>Hu\u1ef3nh \u0110\u1ee9c Ho\u00e0n1<\/sup>, B\u00f9i Nguy\u1ec5n Th\u1ebf Ki\u1ec7t1<\/sup>, Cao Huy B\u00ecnh1<\/sup>, Vi\u00ean Ng\u1ecdc Nam2<\/sup><\/p>\n

1<\/sup>Ban Qu\u1ea3n l\u00fd R\u1eebng ph\u00f2ng h\u1ed9 C\u1ea7n Gi\u1edd, s\u1ed1 1541, \u0110\u01b0\u1eddng R\u1eebng S\u00e1c,
\nx\u00e3 An Th\u1edbi \u0110\u00f4ng, huy\u1ec7n C\u1ea7n Gi\u1edd, Tp. HCM.
\n2<\/sup>Khoa L\u00e2m nghi\u1ec7p, \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Tp. H\u1ed3 Ch\u00ed Minh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

\u0110\u1ec3 g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c t\u00ednh to\u00e1n gi\u00e1 tr\u1ecb c\u1ee7a qu\u1ea7n th\u1ec3 \u0110\u01b0\u1edbc \u0111\u00f4i tr\u1ed3ng t\u1ea1i Khu D\u1ef1 tr\u1eef Sinh quy\u1ec3n r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd th\u00f4ng qua vi\u1ec7c nghi\u00ean c\u1ee9u sinh kh\u1ed1i c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn c\u00e2y c\u00e1 th\u1ec3 v\u00e0 qu\u1ea7n th\u1ec3. \u0110\u00e3 thu th\u1eadp s\u1ed1 li\u1ec7u t\u1eeb 150 \u00f4 ti\u00eau chu\u1ea9n, m\u1ed7i \u00f4 c\u00f3 di\u1ec7n t\u00edch 500 m2<\/sup> (25 m \u00b4 20 m) v\u00e0 ch\u1eb7t h\u1ea1 42 c\u00e2y c\u00f3 c\u1ee1 \u0111\u01b0\u1eddng k\u00ednh th\u00e2n c\u00e2y (D1,3<\/sub> m) t\u1eeb nh\u1ecf \u0111\u1ebfn l\u1edbn \u0111\u1ec3 c\u00e2n t\u00ednh sinh kh\u1ed1i. K\u1ebft qu\u1ea3 cho th\u1ea5y d\u1ea1ng ph\u01b0\u01a1ng tr\u00ecnh Y = a*Xb<\/sup> th\u1ec3 hi\u1ec7n t\u1ed1t m\u1ed1i quan h\u1ec7 gi\u1eefa sinh kh\u1ed1i v\u1edbi \u0111\u01b0\u1eddng k\u00ednh th\u00e2n c\u00e2y. T\u1ed5ng sinh kh\u1ed1i kh\u00f4 trung b\u00ecnh c\u1ee7a qu\u1ea7n th\u1ec3 \u0110\u01b0\u1edbc \u0111\u00f4i trong r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd l\u00e0 344,62 \u00b1 106,38 t\u1ea5n\/ha bi\u1ebfn \u0111\u1ed9ng t\u1eeb 140,33 \u0111\u1ebfn 643,72 t\u1ea5n\/ha. Qu\u1ea7n th\u1ec3 \u0110\u01b0\u1edbc \u0111\u00f4i \u1edf c\u1ea5p tu\u1ed5i 7 (tu\u1ed5i t\u1eeb 33 – 37) c\u00f3 t\u1ed5ng sinh kh\u1ed1i kh\u00f4 trung b\u00ecnh cao nh\u1ea5t v\u1edbi gi\u00e1 tr\u1ecb l\u00e0 430,64 \u00b1 88,63 t\u1ea5n\/ha bi\u1ebfn \u0111\u1ed9ng t\u1eeb 266,49 \u0111\u1ebfn 643,72 t\u1ea5n\/ha. Qu\u1ea7n th\u1ec3 \u0110\u01b0\u1edbc \u0111\u00f4i \u1edf c\u1ea5p tu\u1ed5i 5 (tu\u1ed5i t\u1eeb 23 – 27) c\u00f3 t\u1ed5ng sinh kh\u1ed1i kh\u00f4 th\u1ea5p nh\u1ea5t l\u00e0 304,50 t\u1ea5n\/ha, bi\u1ebfn \u0111\u1ed9ng t\u1eeb 140,33 \u0111\u1ebfn 541,68 t\u1ea5n\/ha. T\u1ed5ng sinh kh\u1ed1i c\u1ee7a qu\u1ea7n th\u1ec3 \u0110\u01b0\u1edbc \u0111\u00f4i tr\u1ed3ng t\u1ea1i Khu D\u1ef1 tr\u1eef Sinh quy\u1ec3n r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd \u01b0\u1edbc \u0111\u1ea1t h\u01a1n 6,35 tri\u1ec7u t\u1ea5n. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u s\u1ebd l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o cho vi\u1ec7c t\u00ednh to\u00e1n trong chi tr\u1ea3 d\u1ecbch v\u1ee5 m\u00f4i tr\u01b0\u1eddng r\u1eebng trong t\u01b0\u01a1ng lai.<\/p>\n

T\u1eeb kh\u00f3a: C\u1ea7n Gi\u1edd, \u0110\u01b0\u1edbc \u0111\u00f4i, sinh kh\u1ed1i<\/em><\/strong><\/td>\n<\/tr>\n

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<\/a>Biomass of the planted Rhizophora apiculata<\/em> Blume populations in Can Gio mangrove Biosphere Reserve, Ho Chi Minh City<\/strong><\/p>\n

To contribute to the calculation of the value of Rhizophora apiculata<\/em> population in Can Gio Mangrove Biosphere Reserve by studying of the biomass of individual tree and populations. Data were collected from 150 plots, each plot of 500 m2<\/sup> (25 m \u00b4 20 m) and cut 42 trees with diameter (D1,3<\/sub> m) from small to large to calculate biomass. The results of the study show that the allometric equation Y = a*Xb<\/sup> demonstrates the relationship between biomass and trunk diameter. The results show that the average dry biomass of the Rhizophora apiculata<\/em> population in Can Gio mangrove forest is 344.62 \u00b1 106.38 tons\/ha, ranging from 140.33 to 643.72 tons\/ha. The population at the age of 7 years (age 33 – 37) had the highest average biomass with the values \u200b\u200bof 430.64 \u00b1 88.63 tons\/ha ranging from 266.49 to 643.72 tons\/ha. The population at the age of 5 (aged 23 – 27) had the lowest dry biomass of 304.50 tons\/ha, ranging from 140.33 to 541.68 tons\/ha. The total biomass of the double mangrove population in Can Gio mangrove forest reserve is estimated at over 6.35 million tons. The result will be a reference for calculations in future payments for forest environmental services.<\/p>\n

Keywords: Can Gio, <\/em>Rhizophora apiculata, Biomas<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>INFILTRATION CHARACTERISTICS OF SOIL UNDER CINNAMON AND ACACIA PLANTATION FOREST IN HEADWATER OF VIET NAM<\/p>\n

<\/a>Pham Thuy Linh, Bui Xuan Dung, Tran Quang Bao<\/p>\n

Vietnam National University of Forestry, Ha Noi, Viet Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

For determining infiltration characteristics of soil under Cinnamon and Acacia plantation forest, double rings infiltrometer was used in 15 different locations (5 times for one part) of up – hill, mid – hill and downhill part in each kind of forest. Research was conducted from June to September 2017. Dye tracer – a new method was used to determine spatial distribution of infiltration in three plots. The first plot had a Cinnamon tree, the second plot had an Acacia tree and the reference plot did not have any tree. Influencing factors such as dry bulk density, vegetation cover, porosity and soil moisture were also analyzed. After carrying out the research, some main findings were: (1) Infiltration rate in both kinds of forests tended to be decreased over time, the rate was the highest at the downhill and the lowest at the middle hill. Both initial and stable infiltration rate of Acacia forest (13.5 and 2.2 mm\/min respectively) are higher than those of Cinnamon forest (9.0 and 1.3 mm\/min respectively). The infiltration rate in both types of forests were not high and they have chance to occur overland flow; (2) Spatial infiltration distribution of dye in three plots was different, dye tended to be infiltrate with the deepest depth and the biggest area into soil at reference plot (1177 cm2<\/sup> and 70 cm in 4th<\/sup> layer), dye tended to infiltrate bigger in Acacia plot (90 to 427 cm2<\/sup>) and deeper in Cinnamon plot (40 to 60 cm); (3) Infiltration rate had positive relationship with vegetation cover, soil moisture and porosity. The findings implied that infiltration rate under Acacia plantation forest has been higher than Cinnamon forest.<\/p>\n

T\u1eeb kh\u00f3a: Acacia forest, Cinnamon forest, dye tracer, infiltration rate, spatial infiltration, vegetation cover<\/em><\/strong><\/td>\n<\/tr>\n

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<\/a>\u0110\u1eb7c \u0111i\u1ec3m th\u1ea5m n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t d\u01b0\u1edbi r\u1eebng tr\u1ed3ng Qu\u1ebf v\u00e0 Keo t\u1ea1i v\u00f9ng \u0111\u1ea7u ngu\u1ed3n c\u1ee7a Vi\u1ec7t Nam<\/strong><\/p>\n

\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c \u0111i\u1ec3m th\u1ea5m n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t d\u01b0\u1edbi r\u1eebng tr\u1ed3ng Qu\u1ebf v\u00e0 Keo, ch\u00fang t\u00f4i \u0111\u00e3 s\u1eed d\u1ee5ng v\u00f2ng \u0111o \u0111\u00f4i t\u1ed1c \u0111\u1ed9 th\u1ea5m \u1edf 15 v\u1ecb tr\u00ed kh\u00e1c nhau cho m\u1ed7i lo\u1ea1i h\u00ecnh r\u1eebng tr\u1ed3ng. C\u1ee5 th\u1ec3, t\u1ea1i khu v\u1ef1c s\u01b0\u1eddn tr\u00ean, s\u01b0\u1eddn gi\u1eefa v\u00e0 s\u01b0\u1eddn d\u01b0\u1edbi \u1edf m\u1ed7i lo\u1ea1i r\u1eebng \u0111\u1ec1u ti\u1ebfn h\u00e0nh \u0111o 5 l\u1ea7n kh\u00e1c nhau. Th\u1eddi gian \u0111o \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1eeb th\u00e1ng 6 \u0111\u1ebfn th\u00e1ng 9 n\u0103m 2017. Ngo\u00e0i ra, thu\u1ed1c nhu\u1ed9m \u0111\u1ed3ng th\u1eddi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c 3 \u0111i\u1ec1u ki\u1ec7n: \u0111\u1ea5t tr\u1ed3ng Keo, Qu\u1ebf v\u00e0 \u0111\u1ea5t c\u00f3 c\u1ecf che ph\u1ee7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c \u0111i\u1ec3m th\u1ea5m n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t theo kh\u00f4ng gian s\u00e2u v\u00e0 ngang. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1eb7c \u0111i\u1ec3m th\u1ea5m n\u01b0\u1edbc nh\u01b0 dung tr\u1ecdng, \u0111\u1ed9 x\u1ed1p, \u0111\u1ed9 che ph\u1ee7 v\u00e0 \u0111\u1ed9 \u1ea9m c\u1ee7a \u0111\u1ea5t c\u0169ng \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch. Sau khi th\u1ef1c hi\u1ec7n nghi\u00ean c\u1ee9u, m\u1ed9t s\u1ed1 ph\u00e1t hi\u1ec7n ch\u00ednh l\u00e0: (1) T\u1ed1c \u0111\u1ed9 th\u1ea5m n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t \u1edf c\u1ea3 hai lo\u1ea1i r\u1eebng c\u00f3 xu h\u01b0\u1edbng gi\u1ea3m d\u1ea7n theo th\u1eddi gian. C\u1ea3 t\u1ed1c \u0111\u1ed9 th\u1ea5m n\u01b0\u1edbc ban \u0111\u1ea7u v\u00e0 \u1ed5n \u0111\u1ecbnh c\u1ee7a r\u1eebng keo (t\u01b0\u01a1ng \u1ee9ng 13,5 v\u00e0 2,2 mm\/ph\u00fat) \u0111\u1ec1u cao h\u01a1n so v\u1edbi r\u1eebng Qu\u1ebf (l\u1ea7n l\u01b0\u1ee3t l\u00e0 9.0 v\u00e0 1,3 mm\/ph\u00fat). L\u01b0\u1ee3ng n\u01b0\u1edbc th\u1ea5m t\u00ednh theo gi\u1edd \u1edf c\u1ea3 2 lo\u1ea1i h\u00ecnh r\u1eebng \u0111\u1ec1u kh\u00f4ng cao v\u00e0 c\u00f3 nguy c\u01a1 l\u1edbn xu\u1ea5t hi\u1ec7n d\u00f2ng ch\u1ea3y b\u1ec1 m\u1eb7t t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u; (2) \u0110\u1eb7c \u0111i\u1ec3m th\u1ea5m n\u01b0\u1edbc theo kh\u00f4ng gian \u1edf c\u00e1c lo\u1ea1i h\u00ecnh r\u1eebng v\u00e0 \u0111\u1ea5t c\u00f3 c\u1ecf che ph\u1ee7 l\u00e0 kh\u00e1c nhau. N\u01b0\u1edbc c\u00f3 xu h\u01b0\u1edbng th\u1ea5m s\u00e2u v\u00e0 di\u1ec7n t\u00edch th\u1ea5m l\u1edbn nh\u1ea5t \u1edf \u0111\u1ea5t c\u00f3 c\u1ecf che ph\u1ee7 (1177 cm2<\/sup> b\u1ec1 r\u1ed9ng v\u00e0 70 cm \u0111\u1ed9 s\u00e2u \u1edf l\u1edbp 4, c\u00e1ch ch\u1ed7 \u0111\u1ed5 thu\u1ed1c nhu\u1ed9m 10 cm) v\u00e0 gi\u1ea3m d\u1ea7n \u1edf c\u00e1c lo\u1ea1i h\u00ecnh r\u1eebng. Di\u1ec7n t\u00edch th\u1ea5m n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t d\u01b0\u1edbi r\u1eebng keo (90 \u0111\u1ebfn 427 cm2<\/sup>) l\u1edbn h\u01a1n r\u1eebng Qu\u1ebf, trong khi \u0111\u1ed9 s\u00e2u th\u1ea5m n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t d\u01b0\u1edbi r\u1eebng Qu\u1ebf (40 \u0111\u1ebfn 60 cm) l\u1ea1i l\u1edbn h\u01a1n so v\u1edbi \u0111\u1ea5t r\u1eebng Keo; (3) T\u1ed1c \u0111\u1ed9 th\u1ea5m c\u00f3 quan h\u1ec7 ch\u1eb7t v\u1edbi th\u1ef1c v\u1eadt che ph\u1ee7, \u0111\u1ed9 \u1ea9m v\u00e0 \u0111\u1ed9 x\u1ed1p c\u1ee7a \u0111\u1ea5t.<\/p>\n

Keywords: R\u1eebng tr\u1ed3ng keo, r\u1eebng tr\u1ed3ng qu\u1ebf, th\u1ea5m n\u01b0\u1edbc theo kh\u00f4ng gian, t\u1ed1c \u0111\u1ed9 th\u1ea5m n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t, th\u1ef1c v\u1eadt che ph\u1ee7<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A PH\u00c2N B\u00d3N V\u00c0 CH\u1ea4T GI\u1eee \u1ea8M \u0110\u1ebeN SINH TR\u01af\u1edeNG\u00a0C\u00c2Y PHI LAO (Casuarina equisetifolia<\/em> Forst. et Forst.F) TR\u00caN C\u1ed2N C\u00c1T B\u00c1N DI \u0110\u1ed8NG T\u1ea0I HUY\u1ec6N L\u1ec6 TH\u1ee6Y T\u1ec8NH QU\u1ea2NG B\u00ccNH V\u00c0 HUY\u1ec6N TRI\u1ec6U PHONG T\u1ec8NH QU\u1ea2NG TR\u1eca<\/p>\n

<\/a>L\u00ea \u0110\u1ee9c Th\u1eafng1,2<\/sup>, Ng\u00f4 \u0110\u00ecnh Qu\u1ebf3<\/sup><\/p>\n

1<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u v\u00e0 Ph\u00e1t tri\u1ec3n V\u00f9ng – B\u1ed9 Khoa h\u1ecdc & C\u00f4ng ngh\u1ec7
\n2 NCS Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n3 H\u1ed9i Khoa h\u1ecdc K\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Phi lao l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 \u0111a t\u00e1c d\u1ee5ng, th\u00edch h\u1ee3p tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9 v\u00f9ng c\u00e1t ven bi\u1ec3n, c\u00f3 t\u00e1c d\u1ee5ng ch\u1eafn gi\u00f3 ch\u1eafn c\u00e1t, b\u1ea3o v\u1ec7 ru\u1ed9ng \u0111\u1ed3ng, l\u00e0ng m\u1ea1c v\u00e0 sinh k\u1ebf ng\u01b0\u1eddi d\u00e2n ven bi\u1ec3n. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y b\u00f3n 300 g ph\u00e2n h\u1eefu c\u01a1 vi sinh S\u00f4ng Gianh trong 3 n\u0103m \u0111\u1ea7u k\u1ebft h\u1ee3p b\u00f3n 10 g ch\u1ea5t gi\u1eef \u1ea9m\/g\u1ed1c cho c\u00e2y Phi lao tr\u1ed3ng tr\u00ean c\u1ed3n c\u00e1t b\u00e1n di \u0111\u1ed9ng c\u00f3 hi\u1ec7u qu\u1ea3 r\u00f5 r\u1ec7t sau giai \u0111o\u1ea1n 24 th\u00e1ng tu\u1ed5i. T\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n chung \u1edf c\u00e1c CTTN dao \u0111\u1ed9ng t\u1eeb \u2206Doo<\/sub> = 0,79 – 1,10 cm\/n\u0103m, \u2206Hvn<\/sub> = 0,35 – 0,45 m\/n\u0103m (L\u1ec7 Th\u1ee7y) v\u00e0 t\u1eeb \u2206Doo<\/sub> = 0,92 – 1,02 cm\/n\u0103m, \u2206Hvn<\/sub> = 0,67 – 0,70 m\/n\u0103m (Tri\u1ec7u Phong). T\u1ef7 l\u1ec7 s\u1ed1ng dao \u0111\u1ed9ng t\u1eeb 65,2% (\u0110C) \u0111\u1ebfn 77,8% (CT3) (L\u1ec7 Th\u1ee7y) v\u00e0 t\u1eeb 60,6% (\u0110C) \u0111\u1ebfn 75,8% (CT3) (Tri\u1ec7u Phong). T\u1ef7 l\u1ec7 c\u00e2y b\u1ecb ch\u1ebft ng\u1ecdn dao \u0111\u1ed9ng t\u1eeb 50,0 – 82,8% (Tri\u1ec7u Phong) \u0111\u1ebfn 39,4 – 85,4% (L\u00ea Th\u1ee7y). K\u1ebft qu\u1ea3 t\u1eeb nghi\u00ean c\u1ee9u n\u00e0y, b\u01b0\u1edbc \u0111\u1ea7u l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c b\u00f3n ph\u00e2n h\u1eefu c\u01a1 vi sinh k\u1ebft h\u1ee3p ch\u1ea5t gi\u1eef \u1ea9m \u00e1p d\u1ee5ng trong c\u00f4ng t\u00e1c tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u1ed3ng tr\u00ean c\u1ed3n c\u00e1t di \u0111\u1ed9ng, c\u1ed3n c\u00e1t b\u00e1n di \u0111\u1ed9ng v\u00f9ng c\u00e1t ven bi\u1ec3n c\u00e1c t\u1ec9nh B\u1eafc Trung b\u1ed9.<\/p>\n

T\u1eeb kh\u00f3a: Ch\u1ea5t gi\u1eef \u1ea9m, c\u1ed3n c\u00e1t b\u00e1n di \u0111\u1ed9ng, ph\u00e2n b\u00f3n h\u1eefu c\u01a1 vi sinh, Phi lao<\/em><\/strong><\/td>\n<\/tr>\n

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<\/a>Effects of fertilizer and humectants to growth plant Casuarina equisetifolia<\/em> Forst. Et Forst.f in the sime – fixed sandy dunes in Le Thuy and Trieu Phong district<\/strong><\/p>\n

Casuarina equisetifolia<\/em> Forst. Et Forst. F a multi – purpose tree species, suitable for protection of sandy coastal areas, windbreaking effect, shifting sand control, protection of rice fields, villages, and livelihoods of coastal people. Research results show that application of 300 g of Song Gianh microorganic organic fertilizer in the first 3 years of incorporation of 10 g humectant\/tree for Casuarina equisetifolia<\/em> in semi – fixed sandy dunes was significantly effective after 24 months of age. The average growth rate in the experimental formulas ranged from \u0394Doo<\/sub> = 0.79 to 1.10 cm\/yr, \u0394Hvn<\/sub> = 0.35 – 0.45 m\/yr (Le Thuy) and \u0394Doo<\/sub> = 0.92 – 1.02 cm\/yr, \u0394Hvn<\/sub> = 0.67 – 0.70 m\/yr (Trieu Phong). Survival rate ranged from 65.2% (\u0110C) to 77.8% (CT3 – Le Thuy) and from 60.6% (\u0110C) to 75.8% (CT3 – Trieu Phong). The percentage of dead tops of the trees ranged from 50.0 – 82.8% (Trieu Phong) to 39.4 – 85.4% (Le Thuy). The results from this study as the basis initially for microorganic organic fertilizer with humectants applied in the afforestation of coastal sandy areas, especially on the fixed sandy dunes, semi – fixed sandy dunes in coastal sandy regions of North Central provinces.<\/p>\n

Keywords: Casuarina equisetifolia, humectants, microorganic organic fertilizer, sime – fixed sandy dunes.<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>K\u1ebeT QU\u1ea2 B\u01af\u1edaC \u0110\u1ea6U NGHI\u00caN C\u1ee8U C\u01a0 S\u1ede KHOA H\u1eccC
\nB\u00d3N PH\u00c2N CHO R\u1eeaNG TR\u1ed2NG KEO LAI \u1ede QU\u1ea2NG NINH<\/p>\n

<\/a>Nguy\u1ec5n Huy S\u01a1n, Ph\u1ea1m \u0110\u00ecnh S\u00e2m, V\u0169 Ti\u1ebfn L\u00e2m, H\u1ed3 Trung L\u01b0\u01a1ng<\/p>\n

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

Keo lai (Acacia hybrids) l\u00e0 c\u00e2y tr\u1ed3ng l\u00e2m nghi\u1ec7p ch\u1ee7 l\u1ef1c \u1edf n\u01b0\u1edbc ta hi\u1ec7n nay, \u0111\u1ec3 n\u00e2ng cao n\u0103ng su\u1ea5t g\u1ed7 r\u1eebng tr\u1ed3ng, m\u1ed9t trong nh\u1eefng bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt th\u00e2m canh quan tr\u1ecdng l\u00e0 b\u00f3n ph\u00e2n cho r\u1eebng tr\u1ed3ng. \u0110\u1ea5t \u1edf khu v\u1ef1c th\u00ed nghi\u1ec7m r\u1ea5t chua (pHKCl<\/sub> \u2248 3,57 – 3,73), h\u00e0m l\u01b0\u1ee3ng m\u00f9n \u1edf m\u1ee9c ngh\u00e8o \u0111\u1ebfn trung b\u00ecnh (1,06 – 2,53%), h\u00e0m l\u01b0\u1ee3ng N t\u1ed5ng s\u1ed1 \u1edf m\u1ee9c ngh\u00e8o \u0111\u1ebfn trung b\u00ecnh (0,063 – 0,155%); h\u00e0m l\u01b0\u1ee3ng P2<\/sub>O5<\/sub> d\u1ec5 ti\u00eau \u1edf m\u1ee9c r\u1ea5t ngh\u00e8o (\u00a3 3 mg\/100 g \u0111\u1ea5t), h\u00e0m l\u01b0\u1ee3ng K2<\/sub>O d\u1ec5 ti\u00eau \u1edf m\u1ee9c ngh\u00e8o \u0111\u1ebfn trung b\u00ecnh (6,6 – 17,4 mg\/100 g \u0111\u1ea5t). Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c tr\u1ed3ng tr\u00ean lo\u1ea1i \u0111\u1ea5t n\u00e0y g\u1ed3m h\u1ed7n h\u1ee3p 2 d\u00f2ng v\u00f4 t\u00ednh keo lai l\u00e0 BV16 v\u00e0 BV32, sau 1 n\u0103m, t\u1ef7 l\u1ec7 s\u1ed1ng trung b\u00ecnh \u0111\u1ea1t 96,81%, \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c (Doo<\/sub>) trung b\u00ecnh \u0111\u1ea1t 3,39 cm, chi\u1ec1u cao trung b\u00ecnh (Hvn<\/sub>) \u0111\u1ea1t 2,47 m, \u0111\u01b0\u1eddng k\u00ednh t\u00e1n trung b\u00ecnh (Dt<\/sub>) \u0111\u1ea1t 1,68 m. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch N, P, K trong l\u00e1 keo lai sau 1 n\u0103m tr\u1ed3ng cho th\u1ea5y h\u00e0m l\u01b0\u1ee3ng N v\u00e0 P2<\/sub>O5 <\/sub>t\u1ed5ng s\u1ed1 trong l\u00e1 keo lai cao h\u01a1n nhi\u1ec1u so v\u1edbi \u1edf trong \u0111\u1ea5t v\u1edbi c\u00e1c tr\u1ecb s\u1ed1 t\u01b0\u01a1ng \u1ee9ng l\u00e0 1,080 – 2,531%N v\u00e0 2,15 – 6,27 mg P2<\/sub>O5<\/sub>\/100 g l\u00e1, ch\u1ee9ng t\u1ecf nhu c\u1ea7u N v\u00e0 P2<\/sub>O5<\/sub> c\u1ee7a keo lai r\u1ea5t l\u1edbn, nh\u01b0ng keo lai c\u00f3 kh\u1ea3 n\u0103ng t\u1ef1 t\u1ed5ng h\u1ee3p N sinh h\u1ecdc t\u1eeb kh\u00f4ng kh\u00ed. Ng\u01b0\u1ee3c l\u1ea1i, h\u00e0m l\u01b0\u1ee3ng K2<\/sub>O d\u1ec5 ti\u00eau trong \u0111\u1ea5t m\u1eb7c d\u00f9 \u1edf m\u1ee9c ngh\u00e8o, nh\u01b0ng trong l\u00e1 (0,072 – 0,277 mg\/100 g l\u00e1) c\u00f2n th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi \u1edf trong \u0111\u1ea5t, ch\u1ee9ng t\u1ecf nhu c\u1ea7u K2<\/sub>O kh\u00f4ng l\u1edbn. V\u00ec v\u1eady, khi tr\u1ed3ng r\u1eebng keo lai \u1edf \u0111\u00e2y c\u1ea7n ph\u1ea3i b\u1ed5 sung P2<\/sub>O5<\/sub>. Sau 2 n\u0103m tr\u1ed3ng, t\u1ee9c l\u00e0 sau 1 n\u0103m b\u00f3n th\u00fac v\u1edbi 9 c\u00f4ng th\u1ee9c ph\u00e2n b\u00f3n kh\u00e1c nhau, t\u1ef7 l\u1ec7 s\u1ed1ng trung b\u00ecnh \u0111\u1ea1t 87,12%, c\u00e1c c\u00f4ng th\u1ee9c b\u00f3n th\u00fac P2<\/sub>O5<\/sub> v\u00e0 K2<\/sub>O cho kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng t\u1ed1t h\u01a1n h\u1eb3n so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c ch\u1ec9 b\u00f3n 200 g NPK (16:16:8). \u0110\u1eb7c bi\u1ec7t, t\u1ed1t nh\u1ea5t \u1edf c\u00f4ng th\u1ee9c b\u00f3n 400 g P2<\/sub>O5<\/sub> k\u1ebft h\u1ee3p 100 g K2<\/sub>O, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c trung b\u00ecnh \u0111\u1ea1t 8,31 cm, chi\u1ec1u cao trung b\u00ecnh \u0111\u1ea1t 8,44 m, \u0111\u01b0\u1eddng k\u00ednh t\u00e1n trung b\u00ecnh \u0111\u1ea1t 3,83 m. Ch\u1ee9ng t\u1ecf b\u00f3n th\u00fac P2<\/sub>O5 <\/sub>ho\u00e0n to\u00e0n ph\u00f9 h\u1ee3p v\u1edbi nh\u1eadn \u0111\u1ecbnh v\u1ec1 nhu c\u1ea7u dinh d\u01b0\u1ee1ng c\u1ee7a c\u00e2y keo lai c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng cung c\u1ea5p dinh d\u01b0\u1ee1ng c\u1ee7a \u0111\u1ea5t.<\/p>\n

T\u1eeb kh\u00f3a: B\u00f3n ph\u00e2n, keo lai, r\u1eebng tr\u1ed3ng, sinh tr\u01b0\u1edfng, Qu\u1ea3ng Ninh<\/em><\/strong><\/td>\n<\/tr>\n

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<\/a>Primary results of research on scientific basics to apply fertiliser for acacia hybrid plantations in Quang Ninh province<\/strong><\/p>\n

acacia hybrid is a mainly planted species in Vietnnam; in order to increase the timber productivity of plantation, application of fertiliser is one of the most important technical measures of intensive afforestation. The soils were highly acidic at location (pHKCl<\/sub> \u2248 3.57 – 3.73); humus content was poor to medium (1.10 – 2.53%), total nitrogen content (Nts<\/sub>) was poor to medium (0.063 – 0.15%), P2<\/sub>O5<\/sub> content was very poor (\u00a3 3 mg 100 g – 1<\/sup> soil) and K2<\/sub>O content was poor to medium (6.6 – 17.4 mg 100 g – 1<\/sup> soil). A mixture of two clones BV16 and BV32 were planted at the experimental site; after one year of planting, the average survival rate was 96,81%, the average growth of root diameter (Doo<\/sub>), height (Hvn<\/sub>) and canopy diameter (Dt<\/sub>) were 3,39 cm, 2,47 m and 1,68 m, respectively. The total N and P2<\/sub>O5<\/sub> contents (1.08 – 2.531% N and 2.15 – 6.27 mg P2<\/sub>O5 <\/sub>100 g – 1<\/sup>, respectively), after one year of planting, were significantly higher in leaves compared with soil, indicating that Acacia hybrid has a high demand for N and P2<\/sub>O; however, Acacia hybrid has the ability to fix atmospheric nitrogen. In contrast, despite poor K2<\/sub>O content in the soil, K2<\/sub>O content (0.072 – 0.227 mg 100 g – 1<\/sup> leaf) was much lower in the leaves than in the soil, suggesting that the demand for K2<\/sub>O are not much high. Thus, additional application of P2<\/sub>O5 <\/sub>are neccessary when planting Acacia hybrid. After two years of planting that is after one year of additional application of fertiliser with nine different treatments, the average survival rate was 87,12%; tree growth was significant higher in treatments with additional application of P2<\/sub>O5<\/sub> and K2<\/sub>O fertiliser compared with treatments only applied 200 g NPK (16:16:8). Particularly, the 400 g P2<\/sub>O5<\/sub> associated with 100 g K2<\/sub>O fertiliser treatment had amongst the highest diameter at breast height (8,31 cm), height (8,44 m) and canopy diameter (3,83 m). The results indicated that additional application of P2<\/sub>O5<\/sub> was totally consistent with the previous studies about the nutrient requirements of Acacia hybrid and the ability to supply nutrient in the soil as well.<\/p>\n

Keywords: Fertiliser application acacia hybrid,<\/em><\/strong> plantation, growth, Quang Ninh province<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U TRI TH\u1ee8C B\u1ea2N \u0110\u1ecaA NH\u1eb0M B\u1ea2O T\u1ed2N V\u00c0 PH\u00c1T TRI\u1ec2N S\u00c2M LAI CH\u00c2U TR\u00caN \u0110\u1ecaA B\u00c0N T\u1ec8NH LAI CH\u00c2U<\/p>\n

<\/a>Nguy\u1ec5n Thanh S\u01a1n1*<\/sup>, Ph\u1ea1m Quang Tuy\u1ebfn1<\/sup>, Ho\u00e0ng Thanh S\u01a1n1<\/sup>, B\u00f9i Thanh T\u00e2n1<\/sup>, Tr\u1ecbnh Ng\u1ecdc Bon1<\/sup>, Nguy\u1ec5n Th\u1ecb V\u00e2n Anh1<\/sup>, Nguy\u1ec5n Th\u1ecb Ho\u00e0i Anh1<\/sup>, Ph\u1ea1m Ti\u1ebfn D\u0169ng1<\/sup>, Patrick Nykiel2<\/sup>, <\/sub>H\u00e0 Thanh T\u00f9ng3<\/sup>.<\/p>\n

1<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh
\n2 <\/sup>Independent Researcher\/Australian International Volunteer
\n3 <\/sup>L\u1edbp Cao h\u1ecdc 25A, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m t\u1ed5ng h\u1ee3p tri th\u1ee9c b\u1ea3n \u0111\u1ecba v\u1ec1 nh\u1eadn d\u1ea1ng \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, c\u00e1c giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n, c\u00e1ch g\u00e2y tr\u1ed3ng, ch\u1ebf bi\u1ebfn, s\u1eed d\u1ee5ng v\u00e0 c\u00f4ng d\u1ee5ng c\u1ee7a S\u00e2m lai ch\u00e2u (SLC). K\u1ebft qu\u1ea3 ph\u1ecfng v\u1ea5n ng\u01b0\u1eddi d\u00e2n b\u1ea3n \u0111\u1ecba t\u1ea1i Lai Ch\u00e2u cho th\u1ea5y (1) V\u1ec1 nh\u1eadn d\u1ea1ng: SLC c\u00f3 chi\u1ec1u cao l\u00ean t\u1edbi 1 m nh\u01b0ng th\u01b0\u1eddng g\u1eb7p l\u00e0 nh\u1ecf h\u01a1n 50 cm, l\u00e0 c\u00e2y l\u00e1 r\u1ed9ng d\u1ea1ng l\u00e1 k\u00e9p m\u1ed7i l\u00e1 k\u00e9p th\u01b0\u1eddng c\u00f3 5 l\u00e1 ch\u00e9t. M\u00e9p l\u00e1 h\u00ecnh r\u0103ng c\u01b0a, b\u1ec1 m\u1eb7t l\u00e1 c\u00f3 l\u00f4ng (\u1edf Phong Th\u1ed5) ho\u1eb7c kh\u00f4ng c\u00f3 l\u00f4ng (\u1edf S\u00ecn H\u1ed3). Chi\u1ec1u d\u00e0i l\u00e1 ch\u00e9t dao \u0111\u1ed9ng t\u1eeb 10 cm (\u1edf S\u00ecn H\u1ed3) \u0111\u1ebfn 15 cm (\u1edf Phong Th\u1ed5). Th\u00e2n c\u00e2y c\u00f3 m\u00e0u xanh ho\u1eb7c m\u00e0u \u0111\u1ecf t\u00eda, hoa l\u00fac \u0111\u1ea7u mang m\u00e0u xanh khi n\u1edf c\u00f3 m\u00e0u tr\u1eafng, qu\u1ea3 c\u00f3 m\u00e0u xanh khi ch\u00edn chuy\u1ec3n sang m\u00e0u \u0111\u1ecf; (2) V\u1ec1 c\u00e1c giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n: SLC ra ch\u1ed3i v\u00e0 l\u00e1 v\u00e0o th\u00e1ng 2 – 5, ra hoa th\u00e1ng 4 – 8 (hoa n\u1edf r\u1ed9 v\u00e0o th\u00e1ng 6) v\u00e0 ra qu\u1ea3 th\u00e1ng 6 – 9, qu\u1ea3 ch\u00edn v\u00e0o th\u00e1ng 10; (3) \u0110i\u1ec1u ki\u1ec7n g\u00e2y tr\u1ed3ng: SLC m\u1ecdc \u1edf c\u1ea3 r\u1eebng gi\u00e0u, r\u1eebng ngh\u00e8o, tr\u00ean c\u00e1c n\u01b0\u01a1ng th\u1ea3o qu\u1ea3 v\u00e0 \u0111\u01b0\u1ee3c tr\u1ed3ng trong c\u1ea3 v\u01b0\u1eddn h\u1ed9 v\u1edbi \u0111\u1ed9 t\u00e0n che l\u1edbn h\u01a1n 0,5 tr\u00ean \u0111\u1ea5t m\u00e0u \u0111en ho\u1eb7c m\u00e0u v\u00e0ng, c\u00e2y con \u0111em tr\u1ed3ng t\u1ed1t nh\u1ea5t c\u00f3 chi\u1ec1u cao 10 – 20 cm; (4) Ch\u1ebf bi\u1ebfn v\u00e0 s\u1eed d\u1ee5ng: c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a SLC \u0111a s\u1ed1 \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00e2n b\u00e1n t\u01b0\u01a1i kh\u00f4ng qua s\u01a1 ch\u1ebf ho\u1eb7c ch\u1ebf bi\u1ebfn, ch\u1ec9 m\u1ed9t s\u1ed1 \u00edt ng\u01b0\u1eddi bi\u1ebft b\u1ea3o qu\u1ea3n \u0111\u1ec3 d\u00f9ng cho gia \u0111\u00ecnh b\u1eb1ng c\u00e1ch treo tr\u00ean g\u00e1c b\u1ebfp; SLC \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00e2n \u0111\u1ecba ph\u01b0\u01a1ng d\u00f9ng \u0111\u1ec3 ch\u1eefa tr\u1ecb v\u1ebft th\u01b0\u01a1ng ngo\u00e0i da, b\u1ed3i b\u1ed5 cho ng\u01b0\u1eddi g\u1ea7y y\u1ebfu, ch\u1eefa \u0111au d\u1ea1 d\u00e0y, d\u00f9ng cho ph\u1ee5 n\u1eef sau sinh v\u00e0 m\u1ed9t s\u1ed1 b\u1ec7nh kh\u00e1c…<\/p>\n

T\u1eeb kh\u00f3a: B\u1ea3o t\u1ed3n, S\u00e2m lai ch\u00e2u, tri th\u1ee9c b\u1ea3n \u0111\u1ecba.<\/em><\/strong><\/td>\n<\/tr>\n

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<\/a>Study of indigenous knowledge for the purpose of conservation and development of Panax vietnamensis <\/em>var. fuscidiscus<\/em> K.Komatsu, S.Zhu & S.Q.Cai in Lai Chau province<\/strong><\/p>\n

This study aims to collect indigenous knowledge on the Panax vietnamensis<\/em> var. fuscidiscus<\/em> K.Komatsu, S.Zhu & S.Q.Cai plant including its identification characteristics, seasonal growth stages, habitat, processing and use as well as its applications. The results of interviews with indigenous people show that:
\n(1) The identification characteristics of Panax vietnamensis<\/em> var. fuscidiscus<\/em> are of plants to 1 m in height with a typical mature height of 50 cm, broad leaved with 5 leaves per petiole. Leaf edge is serrated, leaf surface has hairy in the Phong Tho district but hairless in Sin Ho district. Leaf length were from 10 cm in lenght (Sin Ho) to 15 cm in lenght (Phong Tho). The stem are green with green flower buds, emerging as white. Fruit are green turning red when ripe; (2) The seasonal growth cycle of the Panax species sees shoots and leaves in February – May, flowering in April – August peaking in June, with fruit formation June – September ripening in October; (3) The ideal habitat was found to include natural forest, degraded forest, agricultural land alongside plantings of Amomum aromaticum<\/em> Roxb., as well as household gardens. Suitable top soil was described to be black or yellow in colour, located in humid full and\/or part shade (canopy cover > 50%) and the best height of tree for planting 10 – 20 cm; (4) With regard to the processing and use of the species, most people sell the plant fresh without preliminary processing, only some people dried the plant by hanging it in the chimney over the kitchen fire for storage and later use, interviewees identified the medicinal value for; skin injuries, as a tonic for people with general weakness or thin stature, abdominal pain, postpartum women, and some other diseases.<\/p>\n

Keywords: Conservation<\/em>, Panax vietnamensis var.<\/em> fuscidiscus K. Komatsu,<\/em> S. Zhu & S. Q. Cai, indigenous knowledge.<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>S\u1eec D\u1ee4NG \u1ea2NH VI\u1ec4N TH\u00c1M LANDSAT V\u00c0 GIS X\u00c2Y D\u1ef0NG B\u1ea2N \u0110\u1ed2 BI\u1ebeN \u0110\u1ed8NG DI\u1ec6N T\u00cdCH R\u1eeaNG T\u1ea0I HUY\u1ec6N \u0110OAN H\u00d9NG, T\u1ec8NH PH\u00da TH\u1ecc<\/p>\n

<\/a>L\u00ea Qu\u1ed1c H\u01b0ng, B\u00f9i M\u1ea1nh H\u01b0ng<\/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

S\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 vi\u1ec5n th\u00e1m v\u00e0 GIS trong x\u00e2y d\u1ef1ng b\u1ea3n \u0111\u1ed3 hi\u1ec7n tr\u1ea1ng r\u1eebng c\u0169ng nh\u01b0 b\u1ea3n \u0111\u1ed3 bi\u1ebfn \u0111\u1ed9ng di\u1ec7n t\u00edch r\u1eebng \u0111ang tr\u1edf n\u00ean kh\u00e1 ph\u1ed5 bi\u1ebfn \u1edf Vi\u1ec7t Nam. Nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e2y d\u1ef1ng th\u00e0nh c\u00f4ng b\u1ea3n \u0111\u1ed3 hi\u1ec7n tr\u1ea1ng r\u1eebng trong c\u00e1c n\u0103m 2003, 2010 v\u00e0 2017 t\u1ea1i huy\u1ec7n \u0110oan H\u00f9ng, t\u1ec9nh Ph\u00fa Th\u1ecd. D\u1ef1a tr\u00ean k\u1ebft qu\u1ea3 di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p, nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e2y d\u1ef1ng b\u1ea3n \u0111\u1ed3 bi\u1ebfn \u0111\u1ed9ng di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p giai \u0111o\u1ea1n 2003 – 2010 v\u00e0 2010 – 2017, k\u1ebft qu\u1ea3 cho th\u1ea5y di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p c\u00f3 r\u1eebng c\u00f3 s\u1ef1 thay \u0111\u1ed5i kh\u00e1c nhau qua t\u1eebng giai \u0111o\u1ea1n. C\u1ee5 th\u1ec3, di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p c\u00f3 r\u1eebng t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u t\u0103ng t\u1eeb 938,27 ha l\u00ean 13.177,85 ha giai \u0111o\u1ea1n 2003 – 2010 v\u00e0 gi\u1ea3m t\u1eeb 13.177,85 ha xu\u1ed1ng 8.932,14 ha giai \u0111o\u1ea1n 2010 – 2017. K\u1ebft qu\u1ea3 x\u00e2y d\u1ef1ng kh\u00f3a ph\u00e2n lo\u1ea1i \u1ea3nh cho nh\u1eefng n\u0103m \u1ea3nh kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u ph\u00e2n lo\u1ea1i cho th\u1ea5y \u0111\u1ed9 ch\u00ednh x\u00e1c tr\u00ean 80%, do v\u1eady c\u00e1c b\u1ea3n \u0111\u1ed3 hi\u1ec7n tr\u1ea1ng \u0111\u1ea5t l\u00e2m nghi\u1ec7p c\u0169ng nh\u01b0 bi\u1ebfn \u0111\u1ed9ng di\u1ec7n t\u00edch c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u1ee5c v\u1ee5 c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u00f3 li\u00ean quan \u0111\u1ebfn qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean r\u1eebng t\u1ea1i huy\u1ec7n \u0110oan H\u00f9ng, t\u1ec9nh Ph\u00fa Th\u1ecd.<\/p>\n

T\u1eeb kh\u00f3a: Bi\u1ebfn \u0111\u1ed9ng, \u0111\u1ea5t l\u00e2m nghi\u1ec7p, GIS, vi\u1ec5n th\u00e1m, \u0110oan H\u00f9ng, Ph\u00fa Th\u1ecd<\/em><\/strong><\/td>\n<\/tr>\n

\n

<\/a>Using Landsat data and GIS to quantify changes in forest land in Doan Hung district, Phu Tho province<\/strong><\/p>\n

Using remote sensing and GIS technologies in constructing the status of forest maps as well as forest changes has become commonly in Vietnam. The study has successfully constructed forest status in 2003, 2010 and 2017 in Doan Hung district, Phu Tho province. Based on the extents of forest maps defined, study has quantified changes in forests during the periods of 2003 – 2010 and 2010 – 2017. As a result, findings show that the extents of forests have increased remarkably, in particular after the establishment of Doan Hung District. The extents of forests have increased from 938.27 ha (2003) to 13177.85 ha (2010) during the period of 2003 – 2010 and decreased from 13177.85 ha (2010) to 8.932,14 ha (2017) during the period of 2010 – 2017. Result of constructing a key for image classification shows that images without reference data for classification have over 80% of map accuracies. Therefore, maps of forest status as well as changes in forests can be used for forest resource management activities under the Doan Hung district.<\/p>\n

Keywords: Changes, forest land, GIS, remote sensing, Doan Hung district, Phu Tho province<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>S\u1eec D\u1ee4NG \u1ea2NH SENTINEL 2 \u0110\u1ec2 X\u00c1C \u0110\u1ecaNH NG\u01af\u1ee0NG CH\u1ec8 S\u1ed0 VI\u1ec4N TH\u00c1M PH\u00c1T HI\u1ec6N S\u1edaM M\u1ea4T R\u1eeaNG T\u1ea0I KHU D\u1ef0 TR\u1eee SINH QUY\u1ec2N TH\u1ebe GI\u1edaI LANGBIANG, L\u00c2M \u0110\u1ed2NG<\/p>\n

<\/a>Nguy\u1ec5n H\u1ea3i H\u00f2a1<\/sup>, Ph\u00f9ng V\u0103n Khoa1<\/sup>, L\u00ea V\u0103n H\u01b0\u01a1ng2<\/sup>, L\u00ea V\u0103n S\u01a1n2<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>Trung t\u00e2m Qu\u1ed1c t\u1ebf Nghi\u00ean c\u1ee9u R\u1eebng nhi\u1ec7t \u0111\u1edbi, L\u00e2m \u0110\u1ed3ng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

S\u1eed d\u1ee5ng c\u00f4ng ngh\u00ea\u0323 vi\u00ea\u0303n tha\u0301m va\u0300 GIS trong x\u00e2y d\u1ef1ng b\u1ea3n \u0111\u1ed3 hi\u1ec7n tr\u1ea1ng r\u1eebng c\u0169ng nh\u01b0 theo d\u00f5i gi\u00e1m s\u00e1t bi\u1ebfn \u0111\u1ed9ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i \u1edf Vi\u1ec7t Nam. Nghi\u00ean c\u1ee9u \u0111a\u0303 x\u00e2y d\u01b0\u0323ng ba\u0309n \u0111\u00f4\u0300 hi\u00ea\u0323n tra\u0323ng r\u01b0\u0300ng n\u0103m 2018 v\u1edbi 5 \u0111\u1ed1i t\u01b0\u1ee3ng s\u1eed d\u1ee5ng \u0111\u1ea5t t\u1ea1i Khu DTSQ TG Langbiang, t\u1ec9nh L\u00e2m \u0110\u1ed3ng, v\u1edbi \u0111\u1ed9 tin c\u1eady l\u00e0 89,1%. Nghi\u00ean c\u1ee9u \u0111\u00e3 l\u1ef1a ch\u1ecdn ba ch\u1ec9 s\u1ed1 ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 cho ph\u00e9p ph\u00e1t hi\u1ec7n s\u1edbm m\u1ea5t r\u1eebng, bao g\u1ed3m NDVI (Normalised Difference Vegetation Index), NBR (Normalised Burnt Ratio) v\u00e0 IRSI (Integrated Remote Sensing Index), c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n t\u1ea1i c\u00e1c \u0111i\u1ec3m m\u1ea5t r\u1eebng, ng\u01b0\u1ee1ng gi\u00e1 tr\u1ecb c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n s\u1edbm m\u1ea5t r\u1eebng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh cho khu v\u1ef1c nghi\u00ean c\u1ee9u v\u1edbi \u0111\u1ed9 tin c\u1eady t\u1eeb 66,7 \u00f7 85,7%. \u0110\u1ed1i v\u1edbi ch\u1ec9 s\u1ed1 NDVI, ng\u01b0\u1ee1ng gi\u00e1 tr\u1ecb c\u00f3 th\u1ec3 cho ph\u00e9p ph\u00e1t hi\u1ec7n s\u1edbm m\u1ea5t r\u1eebng dao \u0111\u1ed9ng 0,400 \u00f7 0,792; v\u1edbi NBR l\u00e0 0,200 \u00f7 0,529; v\u00e0 IRSI l\u00e0 0,604 \u00f7 1,193. K\u1ebft qu\u1ea3 t\u00ednh to\u00e1n c\u00e1c ch\u1ec9 s\u1ed1 t\u1eeb \u1ea3nh vi\u1ec5n th\u00e1m \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng ngo\u00e0i th\u1ef1c \u0111\u1ecba cho th\u1ea5y vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c ch\u1ec9 s\u1ed1 NDVI, NBR v\u00e0 IRSI \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1edbm m\u1ea5t r\u1eebng c\u00f3 \u0111\u1ed9 tin c\u1eady v\u00e0 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho Khu d\u1ef1 tr\u1eef Sinh quy\u1ec3n Th\u1ebf gi\u1edbi Langbiang, t\u1ec9nh L\u00e2m \u0110\u1ed3ng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>Bi\u1ebfn \u0111\u1ed9ng, ch\u1ec9 s\u1ed1 th\u1ef1c v\u1eadt, \u0111\u1ea5t l\u00e2m nghi\u1ec7p, Langbiang, GIS, vi\u1ec5n th\u00e1m, Khu DTSQ (Khu d\u1ef1 tr\u1eef sinh quy\u1ec3n), v\u00f9ng \u0111\u1ec7m<\/td>\n<\/tr>\n

\n

<\/a>Using sentinel 2 to determine thresholds of remote sensing indices for early detection of deforestation in langbiang world biosphere reserve, lam dong province<\/strong><\/p>\n

Using remote sensing and GIS technologies in constructing the status of forest maps as well as changes in extents of forest has become commonly in Vietnam. The study has successfully constructed forest status with five Land use\/Land cover types in 2018 in Langbiang Biosphere Reserve, Lam Dong province. In addition, three remote sesning indices, namely NDVI, NBR and IRSI, were selected and calculated for deforestation sites; the thresholds of early forest degradation detection in Langbiang Biosphere Reserve have determined at accuracy values ranging from 66.7 \u00f7 85.7%. For NDVI, thresholds of early deforestation detection is 0.400 \u00f7 0.792. Thresholds of NBR and IRSI are 0.200 \u00f7 0.529 and 0.604 \u00f7 1.193, respectively. As field – based accuracy assessments, using remote sensing indices (NDVI, NBR and IRSI) for early deforestation detection is reliable and applicable in Langbiang World Biosphere Reserve, Lam Dong.<\/p>\n

Keywords: Buffer zone, vegetation index, forest change, forest land, GIS, remote sensing, Langbiang, Biosphere Reserve<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M SINH H\u1eccC, PH\u00d2NG TR\u1eea M\u1eccT Euwallacea fornicatus<\/em> Eichhoff (Coleoptera: Scolytidae) H\u1ea0I TH\u00c2N KEO TAI T\u01af\u1ee2NG, KEO LAI\u00a0T\u1ea0I HUY\u1ec6N Y\u00caN B\u00ccNH V\u00c0 HUY\u1ec6N TR\u1ea4N Y\u00caN, T\u1ec8NH Y\u00caN B\u00c1I<\/p>\n

<\/a>L\u00ea V\u0103n B\u00ecnh<\/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

M\u1ecdt h\u1ea1i th\u00e2n \u1edf r\u1eebng Keo tai t\u01b0\u1ee3ng v\u00e0 keo lai tr\u00ean 3 n\u0103m tu\u1ed5i t\u1ea1i huy\u1ec7n Y\u00ean B\u00ecnh v\u00e0 huy\u1ec7n Tr\u1ea5n Y\u00ean, t\u1ec9nh Y\u00ean B\u00e1i c\u00f3 t\u00ean khoa h\u1ecdc l\u00e0 Euwallacea fornicatus<\/em> Eichhoff, thu\u1ed9c b\u1ed9 C\u00e1nh c\u1ee9ng Coleoptera v\u00e0 h\u1ecd Scolytidae; c\u00f3 4 pha ph\u00e1t tri\u1ec3n l\u00e0 pha tr\u01b0\u1edfng th\u00e0nh, pha tr\u1ee9ng, pha s\u00e2u non v\u00e0 nh\u1ed9ng. M\u1ecdt tr\u01b0\u1edfng th\u00e0nh \u0111\u1ee5c qua l\u1edbp v\u1ecf v\u00e0 \u0111\u00e0o \u0111\u01b0\u1eddng h\u1ea7m v\u00e0o th\u00e2n c\u00e2y, \u0111\u1ed3ng th\u1eddi \u0111\u00e0o \u0111\u1ebfn \u0111\u00e2u c\u1ea5y n\u1ea5m v\u00e0o \u0111\u1ebfn \u0111\u00f3. Nu\u00f4i m\u1ecdt trong ph\u00f2ng th\u00ed nghi\u1ec7m \u1edf \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 26o<\/sup>C, \u0111\u1ed9 \u1ea9m 80%, th\u1eddi gian tr\u01b0\u1edfng th\u00e0nh trung b\u00ecnh 5,2 ng\u00e0y; tr\u1ee9ng 8,9 ng\u00e0y, s\u00e2u non 20,1 ng\u00e0y v\u00e0 nh\u1ed9ng 10 ng\u00e0y; th\u1eddi gian ho\u00e0n th\u00e0nh v\u00f2ng \u0111\u1eddi trung b\u00ecnh l\u00e0 44,2 ng\u00e0y. Ph\u00f2ng tr\u1eeb m\u1ecdt h\u1ea1i th\u00e2n b\u1eb1ng ch\u1ebf ph\u1ea9m Delfin 32WG Bacillus thuringiensis<\/em> v\u00e0 Muskardin c\u00f3 n\u1ea5m Beauveria bassiana <\/em>\u1edf trong ph\u00f2ng th\u00ed nghi\u1ec7m t\u1ef7 l\u1ec7 m\u1ecdt ch\u1ebft 100% sau 7 ng\u00e0y phun.<\/p>\n

T\u1eeb kh\u00f3a: \u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc, v\u00f2ng \u0111\u1eddi, ph\u00f2ng tr\u1eeb, <\/em><\/strong>Euwallacea fornicatus<\/strong><\/td>\n<\/tr>\n

\n

<\/a>Some biology characteristics, control Euwallacea fornicatus<\/em> Eichhoff (Coleoptera: Scolytidae) Stem borer Acacia mangium<\/em>, acacia hybrid in Yen Binh and Tran Yen districts of Yen Bai province<\/strong><\/p>\n

Shot hole borer beetle attacks the over three – year – old Acacia mangium<\/em> and acacia hybrid plantations in Yen Binh and Tran Yen district of Yen Bai province. This ambrosia beetle is named Euwallacea fornicatus <\/em>Eichhoff, belonging to the Coleoptera and Scolytidae family. The four stages of this species are an egg, larva, pupa, and adult. The adult beetles chew out tunnels in the trunk, at that time they cultivate fungi in the galleries. The amount of average time to complete life cycle is 44.2 days in an average temperature of 26o<\/sup>C, humidity 80% under the conditional laboratory experiment. The average period time of the adult beetle is about 5.2 days; eggs hatch in about 8.9 days, the average larval period last 20.1 days and the pupation time is 10.0 days. Preventing shot hole borer beetle by using the Delfin 32WG (Bacillus thuringiensis<\/em>) and Muskardin (Beauveriabassiana<\/em>) has high efficiency with 100% mortality after seven days of spraying in the lab.<\/p>\n

Keywords: Biological characteristics, <\/em><\/strong>lifecyle, control and <\/em>Euwallacea fornicatus<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ea2NH H\u01af\u1edeNG C\u1ee6A C\u01a0 CH\u1ea4T, NHI\u1ec6T \u0110\u1ed8, \u0110\u1ed8 \u1ea8M \u0110\u1ebeN S\u1ef0 SINH TR\u01af\u1edeNG C\u1ee6A N\u1ea4M Coprinus radians<\/em>\u00a0(Desm.)
\nFr. 1838\u00a0 NV1\u00a0 (t\u00ean m\u1edbi Coprinellus radians <\/em>(Desm.) Vilgalys, Hopple & Jacq. Johnson 2001)<\/p>\n

<\/a>B\u00f9i Th\u1ecb Th\u1ee7y1<\/sup>, Ho\u00e0ng Th\u1ecb T\u00e1m1<\/sup>, \u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc1<\/sup>,
\nNguy\u1ec5n Th\u1ecb H\u1eb1ng1<\/sup>, \u0110\u1eb7ng T\u1ea5t Th\u00e0nh2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>V\u1ee5 Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 – B\u1ed9 C\u00f4ng th\u01b0\u01a1ng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebf th\u1eeba c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc cho th\u1ea5y, d\u0103m g\u1ed7 khi \u0111\u01b0\u1ee3c g\u00e2y c\u1ea5y ch\u1ee7ng n\u1ea5m m\u1ee5c ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 nu\u00f4i c\u1ea5y ph\u00f9 h\u1ee3p s\u1ebd t\u1ea1o v\u00e1n d\u0103m kh\u00f4ng c\u1ea7n d\u00f9ng keo d\u00e1n. Nhi\u1ec1u lo\u00e0i n\u1ea5m \u1edf Vi\u1ec7t Nam thu\u1ed9c l\u1edbp N\u1ea5m \u0111\u1ea3m Basidiomycetes c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng tr\u00ean d\u0103m g\u1ed7. Lo\u00e0i n\u1ea5m Coprinus radians<\/em> (Desm.) Fr. 1838 NV1 (t\u00ean m\u1edbi l\u00e0 Coprinellus radians<\/em> (Desm.) Vilgalys, Hopple & Jacq. Johnson 2001) \u0111\u00e3 \u0111\u01b0\u1ee3c tuy\u1ec3n ch\u1ecdn \u0111\u1ec3 chuy\u1ec3n h\u00f3a d\u0103m g\u1ed7 th\u00e0nh d\u1ea1ng ph\u00f9 h\u1ee3p cho s\u1ea3n xu\u1ea5t v\u00e1n bio-composite v\u00ec kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng nhanh nh\u1ea5t trong c\u00e1c ch\u1ee7ng th\u1eed nghi\u1ec7m. \u0110\u1ec3 r\u00fat ng\u1eafn th\u1eddi gian nu\u00f4i c\u1ea5y n\u1ea5m tr\u00ean nguy\u00ean li\u1ec7u, ti\u1ebft ki\u1ec7m v\u1ec1 n\u0103ng l\u01b0\u1ee3ng v\u00e0 nh\u00e2n c\u00f4ng c\u1ea7n nghi\u00ean c\u1ee9u th\u00e0nh ph\u1ea7n c\u01a1 ch\u1ea5t, nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m ph\u00f9 h\u1ee3p. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng pepton, cao n\u1ea5m men, b\u1ed9t \u0111\u1eadu t\u01b0\u01a1ng, b\u1ed9t ng\u00f4 k\u1ebft h\u1ee3p c\u00e1m g\u1ea1o \u0111\u1ec3 b\u1ed5 sung v\u00e0o c\u01a1 ch\u1ea5t d\u0103m g\u1ed7 \u0111\u1ec3 nu\u00f4i c\u1ea5y n\u1ea5m m\u1ef1c Coprinus radians<\/em>. Th\u00e0nh ph\u1ea7n c\u01a1 ch\u1ea5t g\u1ed3m g\u1ed3m 90,7% d\u0103m g\u1ed7 \u0111\u01b0\u1ee3c b\u1ed5 sung 4% c\u00e1m ng\u00f4; 4% c\u00e1m g\u1ea1o; 1% CaCO3<\/sub>; 0,3% b\u1ed9t \u0111\u1eadu t\u01b0\u01a1ng l\u00e0 ph\u00f9 h\u1ee3p \u0111\u1ec3 nu\u00f4i c\u1ea5y n\u1ea5m Coprinus radians <\/em>NV1 nh\u1eb1m t\u1ea1o ra l\u01b0\u1ee3ng l\u1edbn sinh kh\u1ed1i n\u1ea5m cho t\u1ea1o v\u00e1n d\u0103m kh\u00f4ng s\u1eed d\u1ee5ng keo d\u00e1n. N\u1ea5m Coprinus radians <\/em>sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 25 \u00b1 2o<\/sup>C, \u0111\u1ed9 \u1ea9m 75 – 85%.<\/p>\n

T\u1eeb kh\u00f3a: Coprinus radians, sinh tr\u01b0\u1edfng, c\u01a1 ch\u1ea5t<\/em><\/strong><\/td>\n<\/tr>\n

\n

The effect of substract, temperature, humidity on growth of Coprinus radians<\/em> (Desm.) Fr. 1838 NV1 (new name Coprinellus radians<\/em> (Desm.) Vilgalys, Hopple & Jacq. Johnson 2001)<\/strong><\/p>\n

Inherited from the results show that wood chips when cultivated with suitable fungus species and technology will make denatured wood chips then create chipboards without glue. Many species of fungi in Vietnam belong to the basidiomycetes that are capable of growing on wood chips. Among them, Coprinus radians<\/em> (Desm.) Fr. 1838 NV1 (new name Coprinellus radians<\/em> (Desm.) Vilgalys, Hopple & Jacq. Johnson 2001) with the best growth speed among test strains was selected to make denatured wood chips for the production of bio-composite boards. In order to shorten the fungus culture time on wood chips, to save energy and labor, the cultivated substrate composition, temperature, humidity was studied. Our studies have proved that pepton, yeast, soybean, maize flour and rice flour can be added in to the wood chips for culturing the Coprinus radians<\/em>. The substrate consists of 90.7% wood chips added with 4% maize flour; 4% rice flour; 1% CaCO3; 0.3% soybean was suitable for culturing of Coprinus radians<\/em> NV1 to produce large quantities fungal biomass for creating chipboards without glue. Coprinus radians<\/em> grows best at 25 \u00b1 2o<\/sup>C, humidity 75 – 85%.<\/p>\n

Keywords: Coprinus radians, growth, substrate<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>T\u1ea0O V\u1eacT LI\u1ec6U M\u1edaI T\u1eea G\u1ed6 R\u1eeaNG TR\u1ed2NG CHO C\u00d4NG NGHI\u1ec6P S\u1ea2N XU\u1ea4T \u0110\u1ed2 M\u1ed8C<\/p>\n

<\/a>Nguy\u1ec5n Quang Trung, H\u00e0 Ti\u1ebfn M\u1ea1nh; Nguy\u1ec5n Th\u1ecb Ph\u01b0\u1ee3ng,
\nPh\u1ea1m Th\u1ecb Thanh Mi\u1ec1n, Nguy\u1ec5n Tr\u1ea5n H\u01b0ng<\/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

Hi\u1ec7n nay g\u1ed7 keo r\u1eebng tr\u1ed3ng l\u00e0 m\u1ed9t ngu\u1ed3n nguy\u00ean li\u1ec7u ti\u1ec1m n\u0103ng; nh\u01b0ng gi\u00e1 tr\u1ecb c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb g\u1ed7 keo r\u1eebng tr\u1ed3ng c\u00f2n \u0111ang \u1edf m\u1ee9c r\u1ea5t th\u1ea5p do ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 keo r\u1eebng tr\u1ed3ng ch\u01b0a \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng nguy\u00ean li\u1ec7u s\u1ea3n xu\u1ea5t g\u1ed7 x\u1ebb cho ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00f3ng \u0111\u1ed3 m\u1ed9c. Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 t\u1ea1o ra v\u1eadt li\u1ec7u g\u1ed7 \u00e9p kh\u1ed1i t\u1eeb v\u00e1n b\u00f3c g\u1ed7 keo r\u1eebng tr\u1ed3ng \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf. S\u1ea3n ph\u1ea9m g\u1ed7 \u00e9p kh\u1ed1i c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn (d\u00e0i 2,44 m, r\u1ed9ng v\u00e0 d\u00e0y t\u00f9y theo y\u00eau c\u1ea7u s\u1ea3n xu\u1ea5t) v\u00e0 s\u1ea3n ph\u1ea9m n\u00e0y c\u00f3 m\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc, v\u1eadt l\u00ed; t\u00ednh ch\u1ea5t c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i g\u1ed7 l\u1edbn, nh\u00f3m IV r\u1eebng t\u1ef1 nhi\u00ean. S\u1ea3n ph\u1ea9m g\u1ed7 \u00e9p kh\u1ed1i \u0111\u00e3 g\u00f3p ph\u1ea7n n\u00e2ng cao gi\u00e1 tr\u1ecb g\u1ed7 keo r\u1eebng tr\u1ed3ng, \u0111a d\u1ea1ng h\u00f3a c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb g\u1ed7 r\u1eebng tr\u1ed3ng v\u00e0 cung c\u1ea5p v\u1eadt li\u1ec7u g\u1ed7 cho ng\u00e0nh c\u00f4ng nghi\u1ec7p s\u1ea3n xu\u1ea5t \u0111\u1ed3 m\u1ed9c \u1edf Vi\u1ec7t Nam. Gi\u00e1 th\u00e0nh v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u1ea3n ph\u1ea9m g\u1ed7 \u00e9p kh\u1ed1i c\u00f3 t\u00ednh c\u1ea1nh tranh cao so v\u1edbi g\u1ed7 x\u1ebb nh\u1eadp kh\u1ea9u v\u00e0 v\u00e1n d\u00e1n ch\u1ea5t l\u01b0\u1ee3ng cao \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u nguy\u00ean li\u1ec7u cho s\u1ea3n xu\u1ea5t \u0111\u1ed3 m\u1ed9c.<\/p>\n

T\u1eeb kh\u00f3a: G\u1ed7 \u00e9p kh\u1ed1i, g\u1ed7 keo<\/em><\/strong><\/td>\n<\/tr>\n

\n

<\/a>Using plantation log to produce new wood material for furniture industry manufacturing<\/strong><\/p>\n

At present, Acacia plantation wood is a potential timber raw material source; but products value made of planted timber is still low due to the planted logs quality is not yet met the requirement of log for saw board production which is important wood material for furniture manufacturing. This study has created multilaminar block wood made of peeled veneer of small planted acacia logs. Multilaminar block wood has lager dimension than acacia log were used to make it (its dimension is 2.44 m of length; the width and thickness are up to the requirement of production); this product has physical, mechanical and machining properties which are similar to wood quality of some natural timber at 4th<\/sup> group (according to the Vietnamese grading standard). This multilaminar block wood not only contributed to improve the added value and the product diversify of plantation logs but also is a new wood material supplying to furniture manufacture industry in Vietnam. The price and quality of this material has a good competition to the imported timber and high quality plywood which are the raw material resource supplying for furniture manufacturing<\/p>\n

Keywords: Acacia wood, multilaminar block wood<\/em><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>FOREST PLANTATIONS AND SMALLHOLDER LIVELIHOODS IN LAO AND VIETNAM<\/p>\n

<\/a>Project management board<\/p>\n

Vietnamese Academy Forestry Sciences <\/em><\/p>\n

    \n
  1. INTRODUCTION<\/li>\n<\/ol>\n

    The ACIAR funded project \u201cImproving policies for forest plantations to balance smallholder, industry and environmental needs in Lao PDR and Vietnam<\/em>\u201d (2016 – 2018) aims to provide policy options that achieve national goals for tree plantation industry development in Vietnam and Lao PRD through improved linkages between commercial investment and smallholder production and improve the capacity of national researchers in policy research and economic and social analyses.<\/p>\n

    The Government of Viet Nam has set an ambitious goal to become an upper – middle income country by 2035, supported by forest sector strategies to increase forest cover to 42% by 2020 and encourage a change in plantation management to produce more suitable local wood to reduce imported timber for wood processing industries. The Government of Lao PDR has national objectives to restore forest cover to 70%, enhance rural livelihoods, safeguard environmental services, address illegal logging and trade, promote domestic processing of wood products and support \u2018green growth\u2019. The longer – term goal is to graduate from Least Developed Country status while realising the Sustainable Development Goals.<\/p>\n

     <\/p>\n

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

    T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 4 – 2018 \u00a0 1 Nghi\u00ean c\u1ee9u \u0111a d\u1ea1ng c\u00e2y thu\u1ed1c \u1edf x\u00e3 Li\u00ean Minh, huy\u1ec7n V\u00f5 Nhai, t\u1ec9nh Th\u00e1i Nguy\u00ean Research on the diversity of medicinal plants in Lien Minh commune, Vo Nhai district, Thai Nguyen province Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n Tr\u1ecbnh \u0110\u00ecnh Kh\u00e1 Nguy\u1ec5n Minh Hi\u1ebfu […]<\/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\/1614"}],"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=1614"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1614\/revisions"}],"predecessor-version":[{"id":1699,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1614\/revisions\/1699"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}