{"id":2478,"date":"2023-07-17T10:23:59","date_gmt":"2023-07-17T03:23:59","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2478"},"modified":"2024-05-17T10:36:58","modified_gmt":"2024-05-17T03:36:58","slug":"vietnam-journal-of-forest-science-number-3-2023-2","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2023\/07\/vietnam-journal-of-forest-science-number-3-2023-2\/","title":{"rendered":"Vietnam Journal of Forest Science Number 3-2023"},"content":{"rendered":"

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

<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 <\/strong>3<\/strong> – <\/strong>20<\/strong>2<\/strong>3<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\nNghi\u00ean c\u1ee9u ch\u1ecdn l\u1ecdc d\u00f2ng v\u00f4 t\u00ednh b\u1ea1ch \u0111\u00e0n lai sinh tr\u01b0\u1edfng nhanh t\u1ea1i M\u01b0\u1eddng \u1ea2ng, \u0110i\u1ec7n Bi\u00ean<\/td>\nSelection of fast-growing eucalyptus hybrid clones in Muong Ang, Dien Bien<\/td>\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean
\n\u0110\u1ed7 H\u1eefu S\u01a1n
\nL\u00e3 Tr\u01b0\u1eddng Giang
\nNg\u00f4 V\u0103n Ch\u00ednh<\/td>\n		3<\/td>\n<\/tr>\n
2.<\/td>\nNghi\u00ean c\u1ee9u ch\u1ecdn l\u1ecdc gi\u1ed1ng b\u1ea1ch \u0111\u00e0n lai cho tr\u1ed3ng r\u1eebng t\u1ea1i v\u00f9ng L\u01b0\u01a1ng S\u01a1n, H\u00f2a B\u00ecnh<\/td>\nSelection of eucalyptus hybrid cultivars for commercial plantation in Luong Son district, Hoa Binh province<\/td>\nNguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n
\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean<\/td>\n		12<\/td>\n<\/tr>\n
3.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng c\u00e2y B\u00ecnh v\u00f4i nh\u1ecb ng\u1eafn (Stephanie brachyandra<\/em> Diels) t\u1ea1i Th\u00e1i Nguy\u00ean b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom<\/td>\nResearch on vegetative propagation by cutting for Stephanie brachyandra<\/em> Diels in Thai Nguyen province<\/td>\nPh\u1ea1m Thu H\u00e0
\nD\u01b0\u01a1ng V\u0103n Th\u1ea3o<\/td>\n		18<\/td>\n<\/tr>\n
4.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng h\u1eefu t\u00ednh lo\u00e0i \u0110a t\u1eed tr\u00e0 h\u01b0\u01a1ng (Polyspora huongiana<\/em>) v\u00e0 \u0110a t\u1eed tr\u00e0 bidoup (Polyspora bidoupensis<\/em>)<\/td>\nResearch on the propagation of Polyspora huongiana<\/em> and Polyspora bidoupensis<\/em> from seeds<\/td>\nL\u00ea Th\u1ecb Th\u00fay H\u00f2a
\nNguy\u1ec5n B\u00e1 Trung
\nTr\u01b0\u01a1ng Quang C\u01b0\u1eddng
\nL\u00ea H\u1ed3ng \u00c9n<\/td>\n		26<\/td>\n<\/tr>\n
5.<\/td>\nNghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m bi\u1ebfn d\u1ecb, kh\u1ea3 n\u0103ng di truy\u1ec1n v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y c\u1ee7a B\u1ea1ch \u0111\u00e0n grandis (Eucalyptus grandis<\/em>) trong kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf t\u1ea1i Thu\u1eadn Ch\u00e2u, S\u01a1n La<\/td>\nGenetic variation and control of growth and stem quality of Eucalyptus grandis<\/em> in progeny trial in Thuan Chau, Son La<\/td>\nL\u00e3 Tr\u01b0\u1eddng Giang
\n\u0110\u1ed7 H\u1eefu S\u01a1n
\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean
\nNg\u00f4 V\u0103n Ch\u00ednh
\nNguy\u1ec5n H\u1eefu S\u1ef9
\nC\u1ea5n Th\u1ecb Lan
\nD\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n
\nTr\u1ecbnh V\u0103n Hi\u1ec7u
\n\u0110\u1ed7 Thanh T\u00f9ng
\nNguy\u1ec5n Qu\u1ed1c To\u1ea3n<\/td>\n		35<\/td>\n<\/tr>\n
6.<\/td>\n\u0110\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n ngu\u1ed3n gen c\u00e2y M\u00f9 u (Calophyllum inophyllum<\/em> L.) t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh v\u00f9ng Nam B\u1ed9<\/td>\nEvaluation of genetic diversity of Calophyllum inophyllum<\/em> L. in some Southern provinces<\/td>\nL\u00ea S\u01a1n
\nTr\u1ea7n H\u1eefu Bi\u1ec3n
\nPh\u00f9ng V\u0103n T\u1ec9nh
\nNguy\u1ec5n Tr\u1ecdng T\u00e0i
\nNguy\u1ec5n Th\u1ecb Huy\u1ec1n
\nTr\u1ea7n Th\u1ecb Thu H\u00e0
\nL\u00ea Th\u1ecb Th\u1ee7y
\nNguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e0
\nH\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc<\/td>\n		45<\/td>\n<\/tr>\n
7.<\/td>\n\u0110a d\u1ea1ng di truy\u1ec1n c\u1ee7a tuy\u1ebfn tr\u00f9ng Caenorhabditis briggsae<\/em> \u1edf t\u1ec9nh Ninh B\u00ecnh, \u0110\u1ed3ng Nai v\u00e0 L\u00e2m \u0110\u1ed3ng, Vi\u1ec7t Nam<\/td>\nGenetic biodiversity of the nematode Caenorhabditis briggsae<\/em> from Ninh Binh, Dong Nai, and Lam Dong provinces, Vietnam<\/td>\nL\u00ea Th\u1ecd S\u01a1n
\nH\u00e0 B\u00edch H\u1ed3ng
\nB\u00f9i Th\u1ecb Mai H\u01b0\u01a1ng
\nNguy\u1ec5n Th\u1ecb Thu<\/td>\n		58<\/td>\n<\/tr>\n
8.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac t\u1ea7ng c\u00e2y cao v\u00e0 t\u00e1i sinh c\u00e1c l\u00e2m ph\u1ea7n c\u00f3 lo\u00e0i M\u1eadt nh\u00e2n (Eurycoma longifolia<\/em> Jack) ph\u00e2n b\u1ed1
\nt\u1ea1i Nam Trung B\u1ed9 v\u00e0
\nT\u00e2y Nguy\u00ean<\/td>\n		Structural characteristics of tree layer and regenerative trees with Eurycoma longifolia <\/em>distribution in the South Central Coast and Central Highlands<\/td>\nTr\u1ea7n Th\u1ecb Th\u00fay H\u1eb1ng
\nV\u00f5 \u0110\u1ea1i H\u1ea3i
\nD\u01b0\u01a1ng Xu\u00e2n Th\u1eafng
\nMai Vi\u1ec7t Tr\u01b0\u1eddng S\u01a1n
\nCh\u00e2u Th\u1ecb Thu Th\u1ee7y<\/td>\n		65<\/td>\n<\/tr>\n
9.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac r\u1eebng t\u1ef1 nhi\u00ean theo \u0111\u1ed9 d\u00e0y \u0111\u1ea5t than b\u00f9n t\u1ea1i V\u01b0\u1eddn Qu\u1ed1c gia U Minh H\u1ea1, t\u1ec9nh C\u00e0 Mau<\/td>\nStructural characteristics
\nof natural forestat peatland thickness in U Minh Ha National Park, Ca Mau province<\/td>\n		Tr\u00e2\u0300n Kha\u0301nh Hi\u00ea\u0323u
\nTr\u1ea7n Qu\u1ed1c Kh\u1ea3i<\/td>\n		77<\/td>\n<\/tr>\n
10.<\/td>\nC\u00f4ng ngh\u1ec7 DART – TOFMS m\u1ed9t b\u01b0\u1edbc \u0111i m\u1edbi trong gi\u00e1m \u0111\u1ecbnh g\u1ed7 t\u1ea1i Vi\u1ec7t Nam<\/td>\nDART – TOFMS technology a new step for wood identification in Vietnam<\/td>\nV\u00f5 \u0110\u1ea1i H\u1ea3i
\nNguy\u1ec5n B\u1ea3o Ng\u1ecdc
\nB\u00f9i Duy Ng\u1ecdc
\nNguy\u1ec5n \u0110\u1ee9c Th\u00e0nh
\nNguy\u1ec5n T\u1eed Kim
\nHo\u00e0ng Nguy\u1ec5n Vi\u1ec7t Hoa<\/td>\n		87<\/td>\n<\/tr>\n
11.<\/td>\nNghi\u00ean c\u1ee9u th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a s\u1ee3i cellulose t\u1eeb Tre gai Bambusa blumeana<\/em><\/td>\nResearch on chemical composition and properties of cellulose fiber from Bambusa blumeana<\/em><\/td>\nHo\u00e0ng Minh Khoa
\nKazakov Ya. V.
\n\u041e\u043a\u0443\u043b\u043e\u0432\u0430 \u0415.\u041e.
\nChu C\u00f4ng Ngh\u1ecb<\/td>\n		97<\/td>\n<\/tr>\n
12.<\/td>\nHi\u1ec7u l\u1ef1c c\u1ee7a m\u1ed9t s\u1ed1 ch\u1ebf ph\u1ea9m b\u1ea3o qu\u1ea3n ph\u00f2ng ch\u1ed1ng M\u1ecdt tre g\u00e2y h\u1ea1i L\u00f9ng (Bambusa<\/em> longgissia<\/em> sp. nov.) l\u00e0m h\u00e0ng th\u1ee7 c\u00f4ng
\nm\u1ef9 ngh\u1ec7<\/td>\n		Results of testing the preservations treat Bambusa longgissia<\/em> sp. nov. against Dinoderus minutus<\/em> for making handicraft goods<\/td>\nHo\u00e0ng Th\u1ecb T\u00e1m
\nPhan V\u0103n Th\u1eafng
\nNguy\u1ec5n Th\u1ecb H\u1eb1ng
\n\u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc
\nB\u00f9i Th\u1ecb Th\u1ee7y<\/td>\n		106<\/td>\n<\/tr>\n
13.<\/td>\nAnalysis of policies on natural forest restoration and recommendations for the revision<\/td>\nPh\u00e2n t\u00edch c\u00e1c ch\u00ednh s\u00e1ch ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean v\u00e0 nh\u1eefng \u0111\u1ecbnh h\u01b0\u1edbng \u0111\u1ec1 xu\u1ea5t s\u1eeda \u0111\u1ed5i<\/td>\nHoang Nguyen Viet Hoa
\nVo Dai Nguyen
\nDang Quang Hung<\/td>\n		112<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/a><\/a>NGHI\u00caN C\u1ee8U CH\u1eccN L\u1eccC D\u00d2NG V\u00d4 T\u00cdNH\u00a0B\u1ea0CH \u0110\u00c0N LAI SINH TR\u01af\u1edeNG NHANH
\nT\u1ea0I M\u01af\u1edcNG \u1ea2NG, \u0110I\u1ec6N BI\u00caN<\/p>\n

<\/a>Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, \u0110\u1ed7 H\u1eefu S\u01a1n, L\u00e3 Tr\u01b0\u1eddng Giang, Ng\u00f4 V\u0103n Ch\u00ednh<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n

T\u00f3m t\u1eaft<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c gi\u1ed1ng b\u1ea1ch \u0111\u00e0n lai m\u1edbi c\u00f3 sinh tr\u01b0\u1edfng nhanh, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ed1t ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn \u1edf v\u00f9ng T\u00e2y B\u1eafc. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh t\u1ea1i kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh b\u1ea1ch \u0111\u00e0n lai g\u1ed3m 40 d\u00f2ng, tr\u1ed3ng n\u0103m 2020 t\u1ea1i M\u01b0\u1eddng \u1ea2ng, \u0110i\u1ec7n Bi\u00ean. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u1edf giai \u0111o\u1ea1n 27 th\u00e1ng tu\u1ed5i cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng gi\u1eefa c\u00e1c d\u00f2ng v\u00f4 t\u00ednh. T\u01b0\u01a1ng quan di truy\u1ec1n gi\u1eefa ch\u1ec9 ti\u00eau chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c l\u00e0 t\u01b0\u01a1ng quan ch\u1eb7t (0,87 \u00b1 0,05), trong khi \u0111\u00f3 t\u01b0\u01a1ng quan gi\u1eefa ch\u1ec9 ti\u00eau \u0111\u1ed9 th\u1eb3ng th\u00e2n v\u00e0 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c \u1edf m\u1ee9c y\u1ebfu (0,34 \u00b1 0,18). Ba d\u00f2ng m\u1edbi UG110, UG131 v\u00e0 UG134 \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc c\u00f3 n\u0103ng su\u1ea5t \u0111\u1ea1t t\u1eeb 20,3 \u0111\u1ebfn 26,1 m3<\/sup>\/ha\/n\u0103m v\u00e0 v\u01b0\u1ee3t t\u1eeb 61,1% \u0111\u1ebfn 107,1% so v\u1edbi trung b\u00ecnh kh\u1ea3o nghi\u1ec7m. C\u00e1c d\u00f2ng n\u00e0y c\u00f3 th\u00e2n th\u1eb3ng, c\u00e0nh nh\u00e1nh nh\u1ecf v\u1edbi ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ed5ng h\u1ee3p cao, t\u1eeb 4,2 \u0111\u1ebfn 4,5 \u0111i\u1ec3m. \u0110\u00e2y l\u00e0 nh\u1eefng d\u00f2ng r\u1ea5t c\u00f3 tri\u1ec3n v\u1ecdng \u0111\u1ec3 c\u00f4ng nh\u1eadn gi\u1ed1ng m\u1edbi ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn t\u1ea1i v\u00f9ng T\u00e2y B\u1eafc B\u1ed9.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea1ch \u0111\u00e0n lai, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y, d\u00f2ng v\u00f4 t\u00ednh, n\u0103ng su\u1ea5t, sinh tr\u01b0\u1edfng.<\/p>\n

<\/a><\/a>SELECTION OF FAST-GROWING Eucalyptus HYBRID Clones\u00a0in Muong Ang, DIEN BIEN<\/p>\n

<\/a><\/a>Nguyen Duc Kien, Do Huu Son, La Truong Giang, Ngo Van Chinh<\/p>\n

Institute of Forest Tree Improvement and Biotechnology<\/p>\n

Summary<\/p>\n

The objective of the study was to select new hybrid Eucalyptus varieties with fast growth and good stem quality for large timber plantations in the Northwest region. The study was conducted in a trial of 40 Eucalyptus hybrid clones, planted in 2020 in Muong Ang, Dien Bien. Evaluation results at 27 months of age showed that there were significant differences in growth parameters, stem quality and survival rate among clones. The genetic correlation between height and diameter at breast height was strong (0.87 \u00b1 0.05), while the corresponding value between stem straightness and diameter was moderate (0.34 \u00b1 0.18). Based on the evaluation results, three new clones, UG110, UG131 and UG134 were selected, with yields ranging from 20.3 to 26.1 m3<\/sup>\/ha\/year and 61.1% to 107.1% higher than the trial\u2019s average. These clones also have straight stem and small branches with high stem quality index, from 4.2 to 4.5 points. These are very promising clones for recognition as new germplasm for large timber plantations in the Northwest region.<\/p>\n

Keywords:<\/em><\/strong> Eucalyptus hybrid, stem quality, clone, yield, growth.<\/p>\n

<\/a><\/a>NGHI\u00caN C\u1ee8U CH\u1eccN L\u1eccC GI\u1ed0NG B\u1ea0CH \u0110\u00c0N LAI CHO TR\u1ed2NG R\u1eeaNG T\u1ea0I V\u00d9NG L\u01af\u01a0NG S\u01a0N, H\u00d2A B\u00ccNH<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc1<\/sup>, D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n2<\/sup>, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean2*<\/sup><\/p>\n

1 <\/sup>Khoa N\u00f4ng – L\u00e2m, \u0110\u1ea1i h\u1ecdc T\u00e2y B\u1eafc
\n<\/sup><\/strong>2<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n

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

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c nh\u1eefng d\u00f2ng b\u1ea1ch \u0111\u00e0n lai sinh tr\u01b0\u1edfng nhanh cho tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t \u1edf v\u00f9ng L\u01b0\u01a1ng S\u01a1n, H\u00f2a B\u00ecnh v\u00e0 c\u00e1c l\u1eadp \u0111\u1ecba t\u01b0\u01a1ng t\u1ef1. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh v\u00e0 m\u00f4 h\u00ecnh tr\u00ecnh di\u1ec5n c\u00e1c gi\u1ed1ng b\u1ea1ch \u0111\u00e0n \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00e0 gi\u1ed1ng tri\u1ec3n v\u1ecdng \u1edf giai \u0111o\u1ea1n 41 th\u00e1ng tu\u1ed5i. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 sinh tr\u01b0\u1edfng nh\u01b0ng kh\u00f4ng c\u00f3 s\u1ef1 sai kh\u00e1c v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y gi\u1eefa c\u00e1c gi\u1ed1ng \u0111\u01b0a v\u00e0o kh\u1ea3o nghi\u1ec7m c\u0169ng nh\u01b0 trong m\u00f4 h\u00ecnh tr\u00ecnh di\u1ec5n. B\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 gi\u1ed1ng c\u00f3 sinh tr\u01b0\u1edfng nhanh bao g\u1ed3m UP54, UP72, UP95, UP97, UP99, UP164, G9 v\u00e0 DH32 – 29. C\u00e1c gi\u1ed1ng n\u00e0y \u0111\u1ec1u \u0111\u1ea1t t\u1eeb 20 m3<\/sup>\/ha\/n\u0103m tr\u1edf l\u00ean v\u00e0 v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi gi\u1ed1ng \u0111\u1ed1i ch\u1ee9ng U6 l\u00e0 gi\u1ed1ng \u0111ang \u0111\u01b0\u1ee3c tr\u1ed3ng \u0111\u1ea1i tr\u00e0. K\u1ebft qu\u1ea3 c\u0169ng cho th\u1ea5y c\u00e1c gi\u1ed1ng lai PB7, PB48 v\u00e0 H1 c\u00f3 sinh tr\u01b0\u1edfng k\u00e9m v\u00e0 kh\u00f4ng n\u00ean \u0111\u01b0a v\u00e0o c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng r\u1eebng \u1edf v\u00f9ng n\u00e0y.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea1ch \u0111\u00e0n lai, d\u00f2ng v\u00f4 t\u00ednh, sinh tr\u01b0\u1edfng, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y, n\u0103ng su\u1ea5t<\/p>\n

<\/a><\/a>Selection of Eucalyptus hybrid cultivars for commercial plantation\u00a0in Luong Son district, Hoa Binh province<\/strong><\/p>\n

<\/a><\/a>Nguyen Thi Bich Ngoc1<\/sup>, Duong Hong Quan2<\/sup>, Nguyen Duc Kien2*<\/sup><\/p>\n

1 <\/sup>Faculty of Agriculture and Forestry, Tay Bac University
\n2<\/sup> Institute of Forest Tree Improvement and Biotechnology, Vietnamese Academy of Forest Sciences<\/p>\n

Summary<\/p>\n

The objective of the study was to select fast growing eucalyptus hybrid clones for afforestation in Luong Son, Hoa Binh and similar sites. The study was conducted in clonal trials and demonstration plots of recognized and promising eucalyptus cultivars at 41 months of age. The evaluation results showed that there were significant differences in growth traits but no difference in stem quality between the cultivars included in the clonal trial as well as in the demonstration plots. Some fast-growing cultivars were identified including UP54, UP72, UP95, UP97, UP99, UP164, G9 and DH32 – 29. These cultivars all reached 20 m3<\/sup>\/ha\/year or more and are superior to the control cultivar U6 which is being widely planted. The results also showed that the hybrid cultivars PB7, PB48 and H1 had poor growth and should not be included in the afforestation programs in this area.<\/p>\n

Keywords:<\/em><\/strong> Clone, eucalyptus hybrid, growth, stem quality, yield<\/p>\n

<\/a><\/a>NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG\u00a0C\u00c2Y B\u00ccNH V\u00d4I NH\u1eca NG\u1eaeN (Stephanie brachyandra <\/em>Diels)
\nT\u1ea0I TH\u00c1I NGUY\u00caN B\u1eb0NG PH\u01af\u01a0NG PH\u00c1P GI\u00c2M HOM<\/p>\n

<\/a>Ph\u1ea1m Thu H\u00e0, D\u01b0\u01a1ng V\u0103n Th\u1ea3o<\/p>\n

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

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

B\u00ecnh v\u00f4i nh\u1ecb ng\u1eafn (Stephanie brachyandra <\/em>Diels) l\u00e0 m\u1ed9t lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u qu\u00fd c\u00f3 t\u00e1c d\u1ee5ng an th\u1ea7n, gi\u1ea3m \u0111au, g\u00e2y ng\u1ee7, ha\u0323 s\u1ed1t, b\u1ea3o v\u1ec7 th\u1ea7n kinh, ch\u1ed1ng \u0111\u1ed9ng kinh, ha\u0323 huy\u1ebft \u00e1p. Ngo\u00e0i t\u1ef1 nhi\u00ean, c\u00e2y B\u00ecnh v\u00f4i \u0111ang b\u1ecb khai th\u00e1c ca\u0323n ki\u1ec7t, ngu\u1ed3n cung c\u00e2y gi\u1ed1ng kh\u00f4ng \u0111\u00e1p \u1ee9ng nhu c\u1ea7u ph\u00e1t tri\u1ec3n di\u1ec7n t\u00edch tr\u1ed3ng. Nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng c\u00e2y B\u00ecnh v\u00f4i b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom, v\u00ec th\u1ebf s\u1ebd g\u00f3p ph\u1ea7n th\u1ef1c hi\u1ec7n m\u1ee5c ti\u00eau b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen lo\u00e0i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb n\u00e0y. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m cho th\u1ea5y, x\u1eed l\u00fd hom B\u00ecnh v\u00f4i nh\u1ecb ng\u1eafn b\u1eb1ng dung d\u1ecbch IAA n\u1ed3ng \u0111\u1ed9 500ppm cho hi\u1ec7u qu\u1ea3 gi\u00e2m hom cao nh\u1ea5t trong c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m v\u1edbi t\u1ef7 l\u1ec7 hom s\u1ed1ng \u0111\u1ea1t trung b\u00ecnh 78,3%, t\u1ef7 l\u1ec7 hom ra r\u1ec5 \u0111\u1ea1t 46,7%, c\u00e1c ch\u1ec9 s\u1ed1 s\u1ed1 r\u1ec5\/hom, chi\u1ec1u d\u00e0i r\u1ec5 c\u0169ng cao h\u01a1n h\u1eb3n so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c c\u00f2n l\u1ea1i. B\u00ean c\u1ea1nh \u0111\u00f3, y\u1ebfu t\u1ed1 m\u00f9a v\u1ee5 c\u0169ng c\u00f3 \u1ea3nh h\u01b0\u1edfng nh\u1ea5t \u0111\u1ecbnh \u0111\u1ebfn qu\u00e1 tr\u00ecnh gi\u00e2m hom c\u00e2y B\u00ecnh v\u00f4i nh\u1ecb ng\u1eafn, khi gi\u00e2m hom v\u00e0o v\u1ee5 Xu\u00e2n – H\u00e8 t\u1ef7 l\u1ec7 hom s\u1ed1ng \u0111\u1ea1t cao nh\u1ea5t v\u1edbi 89,2%, t\u1ef7 l\u1ec7 hom ra r\u1ec5 \u0111\u1ea1t 57,4%. Lo\u1ea1i gi\u00e1 th\u1ec3 gi\u00e2m hom c\u0169ng l\u00e0 nh\u00e2n t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a hom gi\u00e2m, gi\u00e1 th\u1ec3 h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u (30% c\u00e1t s\u00f4ng + 30% than tr\u1ea5u + 40% \u0111\u1ea5t) cho t\u1ef7 l\u1ec7 ra r\u1ec5 cao nh\u1ea5t \u0111\u1ea1t trung b\u00ecnh 61,5%, sau 60 ng\u00e0y gi\u00e2m. C\u00e1c k\u1ebft qu\u1ea3 n\u00e0y l\u00e0 ti\u1ec1n \u0111\u1ec1 khoa h\u1ecdc cho vi\u1ec7c x\u00e2y d\u1ef1ng quy tr\u00ecnh nh\u00e2n gi\u1ed1ng c\u00e2y B\u00ecnh v\u00f4i nh\u1ecb ng\u1eafn l\u00e0m c\u01a1 s\u1edf cho c\u00f4ng t\u00e1c b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u qu\u00fd n\u00e0y t\u1ea1i t\u1ec9nh Th\u00e1i Nguy\u00ean.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u00ecnh v\u00f4i nh\u1ecb ng\u1eafn, gi\u00e2m hom, Th\u00e1i Nguy\u00ean<\/p>\n

<\/a><\/a>Research on vegetative propagation by cutting\u00a0for Stephanie brachyandra<\/em> Diels in Thai Nguyen province<\/strong><\/p>\n

<\/a><\/a>Pham Thu Ha, Duong Van Thao<\/p>\n

Thai Nguyen University of Agriculture and Forestry<\/p>\n

SUMMARY<\/p>\n

Stephanie brachyandra<\/em> Diels is a precious medicinal plant that has sedative, analgesic, sedative, antipyretic, protective, anti-epileptic, antihypertensive properties. In the wild, the species are being exhaustedly exploited, and the supply of seedlings does not meet the needs of growing planted areas. This study aims to develop a protocol of vegetative propagation for this species in order to serve genetic conservation and development purposes. The research results have identified that IAA 500pmm solution is suitable for cutting propagation for S. brachyandra <\/em>with 78.3% survival and 46.7% rooted, other rooting indication were also higher than that of other treatments. The season is also the other important factor that influences the rooting ability of the species, the results showed that propagation was best from March to June with 89.2% survival and 57.4% rooting rates. The compound of 30% fine sand + 30% burned rice husks + 40% soil had the highest survival rate, rooting rate (61.5%) after 60 cutting days. The research results contributed to provide basic information on propagation efficiency as well as methods of cutting propagation to serve the needs of genetic conservation and development of S. brachyandra <\/em>in Thai Nguyen province.<\/p>\n

Keywords:<\/em><\/strong> Cutting propagation, Stephanie brachyandra<\/em>, Thai Nguyen province<\/p>\n

<\/a><\/a>NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG H\u1eeeU T\u00cdNH\u00a0LO\u00c0I \u0110A T\u1eec TR\u00c0 H\u01af\u01a0NG (Polyspora huongiana<\/em>)
\nV\u00c0 \u0110A T\u1eec TR\u00c0 BIDOUP (Polyspora bidoupensis<\/em>)<\/p>\n

<\/a>L\u00ea Th\u1ecb Th\u00fay H\u00f2a1<\/sup>, Nguy\u1ec5n B\u00e1 Trung1<\/sup>, Tr\u01b0\u01a1ng Quang C\u01b0\u1eddng2<\/sup>, L\u00ea H\u1ed3ng \u00c9n1,*<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean
\n2<\/sup>V\u01b0\u1eddn Qu\u1ed1c gia Bidoup – N\u00fai B\u00e0<\/p>\n

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

C\u00e2y \u0110a t\u1eed tr\u00e0 h\u01b0\u01a1ng v\u00e0 \u0110a t\u1eed tr\u00e0 bidoup l\u00e0 2 lo\u1ea1i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb c\u1ea3nh quan v\u00e0 gi\u00e1 tr\u1ecb b\u1ea3o t\u1ed3n, c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n tr\u1ed3ng \u0111\u01b0\u1eddng ph\u1ed1, khu c\u00f4ng vi\u00ean \u1edf nh\u1eefng n\u01a1i c\u00f3 \u0111i\u1ec1u ki\u1ec7n sinh th\u00e1i t\u01b0\u01a1ng \u0111\u1ed3ng. Trong nghi\u00ean c\u1ee9u n\u00e0y, vi\u1ec7c theo d\u00f5i \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu, \u0111\u1eb7c \u0111i\u1ec3m qu\u1ea3 v\u00e0 h\u1ea1t gi\u1ed1ng, \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc x\u1eed l\u00fd ban \u0111\u1ea7u \u0111\u1ebfn n\u1ea3y m\u1ea7m h\u1ea1t v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh nh\u1eb1m x\u00e2y d\u1ef1ng quy tr\u00ecnh nh\u00e2n gi\u1ed1ng h\u1eefu t\u00ednh cho hai lo\u00e0i. S\u1ed1 l\u01b0\u1ee3ng h\u1ea1t \u0110a t\u1eed tr\u00e0 h\u01b0\u01a1ng v\u00e0 h\u1ea1t \u0110a t\u1eed tr\u00e0 bidoup \u0111\u01b0\u1ee3c ki\u1ec3m \u0111\u1ebfm t\u01b0\u01a1ng \u1ee9ng l\u00e0 26.586 h\u1ea1t\/kg v\u00e0 29.086 h\u1ea1t\/kg. Ng\u00e2m h\u1ea1t \u1edf nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc ban \u0111\u1ea7u l\u00e0 45o<\/sup>C l\u00e0 ph\u00f9 h\u1ee3p \u0111\u1ec3 x\u1eed l\u00fd n\u1ea3y m\u1ea7m. T\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m h\u1ea1t \u0110a t\u1eed tr\u00e0 h\u01b0\u01a1ng l\u00e0 44,00% trong th\u1eddi gian 9,33 ng\u00e0y v\u00e0 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m h\u1ea1t \u0110a t\u1eed tr\u00e0 bidoup l\u00e0 56,67% trong th\u1eddi gian 8 ng\u00e0y. C\u00f4ng th\u1ee9c ph\u00f9 h\u1ee3p nh\u1ea5t cho lo\u00e0i \u0110a t\u1eed tr\u00e0 h\u01b0\u01a1ng v\u00e0 \u0110a t\u1eed tr\u00e0 bidoup \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddm \u01b0\u01a1m sau 6 th\u00e1ng tu\u1ed5i l\u00e0 c\u00f4ng th\u1ee9c 60,9% \u0111\u1ea5t + 26,1% x\u01a1 d\u1eeba + 8,7% ph\u00e2n b\u00f2 hoai + 4,3% ph\u00e2n h\u1eefu c\u01a1 vi sinh, t\u01b0\u01a1ng \u1ee9ng t\u1ef7 l\u1ec7 \u0111\u1ea5t\/x\u01a1 d\u1eeba l\u00e0 7\/3. C\u00e2y con \u0110a t\u1eed tr\u00e0 h\u01b0\u01a1ng sinh tr\u01b0\u1edfng chi\u1ec1u cao trung b\u00ecnh v\u00e0 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c trung b\u00ecnh \u0111\u1ea1t 19,08 cm v\u00e0 3,23 mm, t\u0103ng kho\u1ea3ng 86,33% chi\u1ec1u cao v\u00e0 24,23% \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c. C\u00e2y con \u0110a t\u1eed tr\u00e0 bidoup sinh tr\u01b0\u1edfng chi\u1ec1u cao trung b\u00ecnh v\u00e0 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c trung b\u00ecnh \u0111\u1ea1t 19,11 cm v\u00e0 3,08 mm, t\u0103ng kho\u1ea3ng 58,85% chi\u1ec1u cao v\u00e0 30,51% \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110a t\u1eed tr\u00e0 bidoup, \u0110a t\u1eed tr\u00e0 h\u01b0\u01a1ng, nh\u00e2n gi\u1ed1ng, nhi\u1ec7t \u0111\u1ed9 n\u1ea3y m\u1ea7m, th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u<\/p>\n

<\/a><\/a>Research on the propagation of Polyspora huongiana\u00a0<\/em>and Polyspora bidoupensis<\/em> from seeds<\/strong><\/p>\n

<\/a><\/a>Le Thi Thuy Hoa1<\/sup>, Nguyen Ba Trung1<\/sup>, Truong Quang Cuong2<\/sup>, Le Hong En1,*<\/sup><\/p>\n

1<\/sup> Forest Science Institute of Central Highlands and South of Central Vietnam
\n2<\/sup>Bidoup – Nui Ba National Park<\/p>\n

SUMMARY<\/p>\n

Polyspora huongiana<\/em> and Polyspora bidoupensis<\/em> are two plants with landscape and conservation value, which can be grown in streets and parks in places with similar ecological conditions. In this study, the monitoring of plant phenology, fruit and seed characteristics, assessment of the effect of initial treatment water temperature on seed germination, and substrate composition on seedlings growth were investigated conducted in order to develop a sexual propagation procedure for the two species. The number of seeds per kilogram of Polyspora huongiana<\/em> and Polyspora bidoupensis<\/em> counted were 26,586 seeds\/kg and 29,086 seeds\/kg, respectively. Soaking seeds at an initial water temperature of 45o<\/sup>C is suitable for germination treatment. The germination rate of Polyspora huongiana<\/em> seeds was 44.00% in 9.33 days and the germination rate of Polyspora bidoupensis<\/em> seeds was 56.67% in 8 days. The suitable formula for the species of Polyspora huongiana<\/em> and Polyspora bidoupensis<\/em> at the nursery stage after 6 months of age is 60.9% soil + 26.1% coir + 8.7% cow manure + 4. 3% microbial organic fertilizer (corresponding to the ratio of soil\/coir is 7\/3). Seedlings of Polyspora huongiana<\/em> grow to mean height and root diameter reaching 19.08 cm and 3.23 mm, increasing about 86.33% and 24.23%, respectively. Seedlings of Polyspora bidoupensis<\/em> grow to mean height and root diameter reaching 19.11 cm and 3.08 mm, increasing about 58.85% and 30.51%, respectively.<\/p>\n

Keywords:<\/em><\/strong> Polyspora bidoupensis, Polyspora huongiana, <\/em>propagation, germination temperature, substrate composition<\/p>\n

<\/a><\/a>NGHI\u00caN C\u1ee8U \u0110\u1eb6C \u0110I\u1ec2M BI\u1ebeN D\u1eca, KH\u1ea2 N\u0102NG DI TRUY\u1ec0N\u00a0V\u1ec0 SINH TR\u01af\u1edeNG V\u00c0 CH\u1ea4T L\u01af\u1ee2NG TH\u00c2N C\u00c2Y\u00a0C\u1ee6A B\u1ea0CH \u0110\u00c0N GRANDIS (<\/em>Eucalyptus<\/em> grandis)\u00a0<\/em>TRONG KH\u1ea2O NGHI\u1ec6M H\u1eacU TH\u1ebe T\u1ea0I THU\u1eacN CH\u00c2U, S\u01a0N LA<\/p>\n

<\/a>L\u00e3 Tr\u01b0\u1eddng Giang, \u0110\u1ed7 H\u1eefu S\u01a1n, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, Ng\u00f4 V\u0103n Ch\u00ednh,
\nNguy\u1ec5n H\u1eefu S\u1ef9, C\u1ea5n Th\u1ecb Lan, D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n, Tr\u1ecbnh V\u0103n Hi\u1ec7u,
\n\u0110\u1ed7 Thanh T\u00f9ng, Nguy\u1ec5n Qu\u1ed1c To\u1ea3n<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n

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

\u0110\u00e1nh gi\u00e1 bi\u1ebfn d\u1ecb v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y c\u1ee7a 80 gia \u0111\u00ecnh B\u1ea1ch \u0111\u00e0n grandis tr\u1ed3ng kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf t\u1eeb th\u00e1ng 7\/2020 t\u1ea1i Thu\u1eadn Ch\u00e2u, S\u01a1n La ph\u1ee5c v\u1ee5 cho c\u00f4ng t\u00e1c ch\u1ecdn gi\u1ed1ng B\u1ea1ch \u0111\u00e0n grandis theo h\u01b0\u1edbng tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u1edf giai \u0111o\u1ea1n 30 th\u00e1ng tu\u1ed5i cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y nh\u01b0ng ch\u01b0a c\u00f3 s\u1ef1 sai kh\u00e1c v\u1ec1 t\u1ef7 l\u1ec7 s\u1ed1ng gi\u1eefa c\u00e1c gia \u0111\u00ecnh trong kh\u1ea3o nghi\u1ec7m. Nh\u00f3m c\u00e1c gia \u0111\u00ecnh sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t trong kh\u1ea3o nghi\u1ec7m mang s\u1ed1 hi\u1ec7u G11, G7, G12 v\u00e0 G17 v\u1edbi th\u1ec3 t\u00edch th\u00e2n c\u00e2y trung b\u00ecnh \u0111\u1ea1t 23,7 dm3<\/sup>\/c\u00e2y, v\u01b0\u1ee3t 163,3% so v\u1edbi trung b\u00ecnh chung c\u1ee7a kh\u1ea3o nghi\u1ec7m, \u0111\u1ed3ng th\u1eddi c\u00f3 th\u00e2n th\u1eb3ng v\u00e0 c\u00e0nh nh\u00e1nh nh\u1ecf ph\u00f9 h\u1ee3p v\u1edbi tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn. C\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng c\u00f3 h\u1ec7 s\u1ed1 di truy\u1ec1n theo ngh\u0129a h\u1eb9p (h2<\/sup> = 0,21 – 0,39) v\u00e0 h\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed9ng di truy\u1ec1n t\u00edch l\u0169y (CVA<\/sub> = 20,69 – 21,37%) cao h\u01a1n so v\u1edbi c\u00e1c ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y (h2<\/sup> = 0,17 – 0,18; CVA<\/sub> = 9,93 – 10,74%). Gi\u1eefa ch\u1ec9 ti\u00eau chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c c\u00f3 t\u01b0\u01a1ng quan r\u1ea5t ch\u1eb7t (0,94 \u00b1 0,03), trong khi ch\u1ec9 ti\u00eau \u0111\u1ed9 nh\u1ecf c\u00e0nh v\u00e0 chi\u1ec1u cao v\u00fat ng\u1ecdn c\u00f3 t\u01b0\u01a1ng quan di truy\u1ec1n y\u1ebfu (0,22 \u00b1 0,04).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea1ch \u0111\u00e0n grandis, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y, h\u1ec7 s\u1ed1 di truy\u1ec1n theo ngh\u0129a h\u1eb9p, sinh tr\u01b0\u1edfng, t\u01b0\u01a1ng quan di truy\u1ec1n<\/p>\n

<\/a><\/a>Genetic variation and control of growth and stem quality\u00a0of E<\/em>ucalyptus<\/em> grandis<\/em> in progeny trial in Thuan Chau, Son La<\/strong><\/p>\n

<\/a><\/a>La Truong Giang, Do Huu Son, Nguyen Duc Kien, Ngo Van Chinh, Nguyen Huu Sy,
\nCan Thi Lan, Duong Hong Quan, Trinh Van Hieu, Do Thanh Tung, Nguyen Quoc Toan<\/p>\n

Institute of Forest Tree Improvement and Biotechnology<\/p>\n

summary<\/p>\n

Evaluate the variation in growth and stem quality of the 80 Eucalyptus grandis<\/em> families planted in 2020 in Thuan Chau, Son La for breeding towards large timber plantations. The evaluation results at the age of 30 months showed significant differences in growth traits and stem quality, but there was no difference in survival rate between the families in the trial. The best-performing families in terms of growth were G11, G7, G12 and G17 with an average stem volume of 23.7 dm3<\/sup>\/tree which was 163.3 percent higher than the overall average of the trial. These families exhibited straight stem and small branches, making them suitable for large timber plantations. The growth traits displayed high moderately high narrow-sense heritability (h2<\/sup> = 0.21 – 0.39) and the coefficient of additive genetic variation (CVA<\/sub> = 20.69 – 21.37%) compared to stem quality (h2<\/sup> = 0.17 – 0.18; CVA<\/sub> = 9.93 – 10.74%). There was a strong correlation between tree height and diameter (0.94 \u00b1 0.03), while the correlation between branch size index and height showed a weak genetic correlation (0.22 \u00b1 0. 04).<\/p>\n

Keywords:<\/em><\/strong> Eucalyptus grandis<\/em>, stem quality, narrow-sense heritability, growth, genetic correlation<\/p>\n

<\/a><\/a>\u0110\u00c1NH GI\u00c1 \u0110A D\u1ea0NG DI TRUY\u1ec0N NGU\u1ed2N GEN\u00a0C\u00c2Y M\u00d9 U (Calophyllum inophyllum<\/em> L.)
\nT\u1ea0I M\u1ed8T S\u1ed0 T\u1ec8NH V\u00d9NG NAM B\u1ed8<\/p>\n

<\/a>L\u00ea S\u01a1n1<\/sup>, Tr\u1ea7n H\u1eefu Bi\u1ec3n2<\/sup>, Ph\u00f9ng V\u0103n T\u1ec9nh2<\/sup>, Nguy\u1ec5n Tr\u1ecdng T\u00e0i2<\/sup>, Nguy\u1ec5n Th\u1ecb Huy\u1ec1n1<\/sup>,
\nTr\u1ea7n Th\u1ecb Thu H\u00e01<\/sup>, L\u00ea Th\u1ecb Th\u1ee7y1<\/sup>, Nguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e01<\/sup>, H\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc1<\/sup><\/p>\n

1<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p
\n<\/sup><\/strong>2<\/sup> Trung t\u00e2m Nghi\u00ean c\u1ee9u th\u1ef1c nghi\u1ec7m L\u00e2m nghi\u1ec7p \u0110\u00f4ng Nam B\u1ed9<\/p>\n

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

Nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n ngu\u1ed3n gen c\u00e2y M\u00f9 u t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh Nam B\u1ed9 l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 l\u01b0u gi\u1eef v\u00e0 ph\u00e1t tri\u1ec3n, ph\u1ee5c v\u1ee5 cho vi\u1ec7c khai th\u00e1c ngu\u1ed3n gen lo\u00e0i c\u00e2y n\u00e0y v\u1edbi hi\u1ec7u qu\u1ea3 cao. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a 80 m\u1eabu M\u00f9 u thu th\u1eadp t\u1ea1i B\u1ebfn Tre, Tr\u00e0 Vinh, S\u00f3c Tr\u0103ng, B\u1ea1c Li\u00eau v\u00e0 C\u00e0 Mau b\u1eb1ng 5 ch\u1ec9 th\u1ecb ISSR \u0111\u00e3 thu \u0111\u01b0\u1ee3c 43 ph\u00e2n \u0111o\u1ea1n DNA, trong \u0111\u00f3 c\u00f3 27 ph\u00e2n \u0111o\u1ea1n \u0111a h\u00ecnh chi\u1ebfm trung b\u00ecnh 63,72%. C\u00e1c ch\u1ec9 s\u1ed1 \u0111a d\u1ea1ng di truy\u1ec1n trung b\u00ecnh c\u1ee7a M\u00f9 u thu \u0111\u01b0\u1ee3c l\u1ea7n l\u01b0\u1ee3t \u0111\u1ea1t h<\/em> = 0,2167, I<\/em> = 0,329 v\u00e0 PPB<\/em> = 63,72%. Trong \u0111\u00f3, qu\u1ea7n th\u1ec3 M\u00f9 u t\u1ea1i t\u1ec9nh B\u1ebfn Tre v\u00e0 Tr\u00e0 Vinh c\u00f3 m\u1ee9c \u0111a d\u1ea1ng di truy\u1ec1n cao h\u01a1n so v\u1edbi c\u00e1c qu\u1ea7n th\u1ec3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. C\u00f3 s\u1ef1 sai kh\u00e1c v\u1ec1 di truy\u1ec1n gi\u1eefa c\u00e1c qu\u1ea7n th\u1ec3 M\u00f9 u t\u1ea1i 5 t\u1ec9nh v\u00f9ng Nam B\u1ed9 v\u1edbi GST <\/sub>=<\/em> 0,2490 (24,90%) v\u00e0 gi\u00e1 tr\u1ecb Nm<\/em> = 1,5083. Kho\u1ea3ng c\u00e1ch di truy\u1ec1n gi\u1eefa 5 qu\u1ea7n th\u1ec3 M\u00f9 u \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u n\u1eb1m trong kho\u1ea3ng t\u1eeb 0,069 \u0111\u1ebfn 0,190 v\u00e0 m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng dao \u0111\u1ed9ng trong kho\u1ea3ng t\u1eeb 0,827 (82,70%) \u0111\u1ebfn 0,934 (93,40%). C\u00e1c qu\u1ea7n th\u1ec3 M\u00f9 u t\u1ea1i t\u1ec9nh B\u1ebfn Tre, Tr\u00e0 Vinh v\u00e0 S\u00f3c Tr\u0103ng c\u00f3 t\u00ednh \u0111a d\u1ea1ng di truy\u1ec1n cao h\u01a1n c\u00e1c qu\u1ea7n th\u1ec3 t\u1ea1i t\u1ec9nh B\u1ea1c Li\u00eau v\u00e0 C\u00e0 Mau, do \u0111\u00f3 c\u1ea7n t\u1eadp trung nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen c\u1ee7a c\u00e1c qu\u1ea9n th\u1ec3 M\u00f9 u n\u00e0y.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed ISSR, DNA, \u0111a d\u1ea1ng di truy\u1ec1n, M\u00f9 u<\/p>\n

<\/a><\/a>Evaluation of genetic diversity of Calophyllum inophyllum<\/em> L.\u00a0in some Southern provinces<\/strong><\/p>\n

<\/a><\/a>Le Son1<\/sup>, Tran Huu Bien2<\/sup>, Phung Van Tinh2<\/sup>, Nguyen Trong Tai2<\/sup>, Nguyen Thi Huyen1<\/sup>,
\nTran Thi Thu Ha1<\/sup>, Le Thi Thuy1<\/sup>, Nguyen Thi Viet Ha1<\/sup>, Ha Thi Huyen Ngoc1<\/sup><\/p>\n

1<\/sup> Institute of Forest Tree Improvement and Biotechnology
\n2<\/sup> Centre for Forest Research and Experiment of South Western Vietnam<\/p>\n

summary<\/p>\n

The aim of this study is evaluating the genetic diversity of Calophyllum inophyllum<\/em> L. of some Southern provinces in order to build up the genetic conservation and development strategies for this mutli- purposes species. Five ISSR markers were used to amplify the genomic DNA of 80 samples of C. inophyllum<\/em> L. that were collected from Ben Tre, Tra Vinh, Soc Trang, Bac Lieu and Ca Mau. The results showed a total of 43 DNA segments were obtained, in which 27 polymorphic segments accounting for an average of 63.72%. The average genetic diversity indexes of C. inophyllum<\/em> L. samples obtained were h<\/em> = 0.2167, I = 0.329 and PPB<\/em> = 63.72%, respectively. In which, C. inophyllum<\/em> L. populations in Ben Tre and Tra Vinh provinces have higher values \u200b\u200bthan studied populations. There was genetic difference between populations of C. inophyllum<\/em> L. in 5 provinces in the South with GST<\/sub><\/em> = 0.2490 (24.90%) and Nm<\/em> = 1.5083. The genetic distance between the 5 studied populations of C. inophyllum<\/em> L. ranges from 0.069 to 0.190 and the degree of similarity ranges from 0.827 (82.70%) to 0.934 (93.40%). Ben Tre, Tra Vinh and Soc Trang populations had higher genetic diversity than that in Bac Lieu and Ca Mau provinces. <\/em>Therefore, research and development should be focused on research and development genetic resources of these populations the species.<\/p>\n

Keywords:<\/em><\/strong> Calophyllum inophyllum<\/em> L., DNA, genetic diversity, ISSR markers<\/p>\n

<\/a><\/a>\u0110A D\u1ea0NG DI TRUY\u1ec0N C\u1ee6A TUY\u1ebeN TR\u00d9NG Caenorhabditis briggsae\u00a0<\/em>\u1ede T\u1ec8NH NINH B\u00ccNH, \u0110\u1ed2NG NAI V\u00c0 L\u00c2M \u0110\u1ed2NG, VI\u1ec6T NAM<\/p>\n

<\/a>L\u00ea Th\u1ecd S\u01a1n1,*<\/sup>, H\u00e0 B\u00edch H\u1ed3ng1<\/sup>, B\u00f9i Th\u1ecb Mai H\u01b0\u01a1ng1<\/sup>, Nguy\u1ec5n Th\u1ecb Thu1<\/sup><\/p>\n

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

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

Caenorhabditis briggsae<\/em> l\u00e0 m\u1ed9t trong s\u1ed1 c\u00e1c lo\u00e0i tuy\u1ebfn tr\u00f9ng l\u01b0\u1ee1ng t\u00ednh v\u00e0 t\u1ef1 th\u1ee5 tinh trong. Lo\u00e0i n\u00e0y l\u00e0 m\u1ee5c ti\u00eau m\u00f4 t\u1ea3 trong chu\u1ed7i nghi\u00ean c\u1ee9u \u0111a d\u1ea1ng c\u1ee7a gi\u1ed1ng Caenorhabditis<\/em> \u1edf nh\u1eefng khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean. Nghi\u00ean c\u1ee9u n\u00e0y tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 ph\u00e2n l\u1eadp, nu\u00f4i c\u1ea5y v\u00e0 m\u00f4 t\u1ea3 ph\u00e2n t\u1eed c\u1ee7a lo\u00e0i C. briggsae<\/em> ph\u00e2n b\u1ed1 \u1edf V\u01b0\u1eddn Qu\u1ed1c gia C\u00e1t Ti\u00ean (t\u1ec9nh \u0110\u1ed3ng Nai v\u00e0 L\u00e2m \u0110\u1ed3ng) v\u00e0 C\u00fac Ph\u01b0\u01a1ng (t\u1ec9nh Ninh B\u00ecnh) c\u1ee7a Vi\u1ec7t Nam. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e2n l\u1eadp v\u00e0 nu\u00f4i c\u1ea5y nh\u00e2n t\u1ea1o \u0111\u01b0\u1ee3c 17 ch\u1ee7ng C. briggsae<\/em> thu t\u1eeb V\u01b0\u1eddn Qu\u1ed1c gia C\u00e1t Ti\u00ean v\u00e0 10 ch\u1ee7ng thu t\u1eeb V\u01b0\u1eddn Qu\u1ed1c gia C\u00fac Ph\u01b0\u01a1ng. \u0110\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng ph\u00e2n t\u1eed c\u1ee7a tr\u00ecnh t\u1ef1 18S rDNA gi\u1eefa c\u00e1c ch\u1ee7ng giao \u0111\u1ed9ng t\u1eeb 99,53% \u0111\u1ebfn 100% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng C. briggsae <\/em>AF16. K\u1ebft qu\u1ea3 n\u00e0y cho th\u1ea5y ti\u1ec1m n\u0103ng \u0111a d\u1ea1ng cao c\u1ee7a lo\u00e0i tuy\u1ebfn tr\u00f9ng C. briggsae<\/em> \u1edf Vi\u1ec7t Nam. Ti\u1ebfp theo, ch\u00fang t\u00f4i h\u01b0\u1edbng t\u1edbi s\u1eed d\u1ee5ng c\u00e1c ch\u1ee7ng tuy\u1ebfn tr\u00f9ng C. briggsae <\/em>t\u1eeb hai V\u01b0\u1eddn \u0111\u1ec3 nghi\u00ean c\u1ee9u m\u1ed1i quan h\u1ec7 c\u1ea5u tr\u00fac gen v\u00e0 t\u00ednh \u0111a h\u00ecnh t\u00ednh tr\u1ea1ng n\u00f3i chung.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>: Caenorhabditis briggsae<\/em>, tuy\u1ebfn tr\u00f9ng, DNA barcoding, nu\u00f4i c\u1ea5y, ph\u00e2n l\u1eadp<\/p>\n

<\/a><\/a>Genetic biodiversity of the nematode Caenorhabditis briggsae<\/em> from Ninh Binh, Dong Nai, and Lam Dong provinces, Vietnam<\/p>\n

<\/a><\/a>Le Tho Son1,*<\/sup>, Ha Bich Hong1<\/sup>, Bui Thi Mai Huong1<\/sup>, Nguyen Thi Thu1<\/sup><\/p>\n

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

summary<\/p>\n

Caenorhabditis briggsae<\/em> is hermaphroditic nematode species. This species is targeted in the biodiversity research of the nematode genus Caenorhabditis<\/em> in ecological systems of national parks. In this research, we conducted the isolation, cultivation and genetic diversity of the nematode C. briggsae<\/em> from Cuc Phuong and Cat Tien National Parks in Vietnam. In the results, we successfully found 17 new C. briggsae<\/em> strains in Cat Tien while 10 in Cuc Phuong. The analyses of the18S rDNA sequences presented the identities of 99.53% to 100% to the control C. briggsae<\/em> AF16. This indicated the rich biodiversity of C. briggsae<\/em> in the ecological systems within national parks. In the future, we possively use the numerous strains for the trait-to-genetics diversity within.<\/p>\n

Keywords:<\/em><\/strong> Caenorhabditis briggsae<\/em>, cultivation, DNA barcoding, isolation, nematode<\/p>\n

<\/a><\/a>\u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U TR\u00daC T\u1ea6NG C\u00c2Y CAO V\u00c0 T\u00c1I SINH C\u00c1C L\u00c2M PH\u1ea6N\u00a0C\u00d3 LO\u00c0I M\u1eacT NH\u00c2N (Eurycoma longifolia<\/em> Jack)\u00a0PH\u00c2N B\u1ed0 T\u1ea0I NAM TRUNG B\u1ed8 V\u00c0 T\u00c2Y NGUY\u00caN<\/p>\n

<\/a>Tr\u1ea7n Th\u1ecb Th\u00fay H\u1eb1ng1<\/sup>, V\u00f5 \u0110\u1ea1i H\u1ea3i2<\/sup>, D\u01b0\u01a1ng Xu\u00e2n Th\u1eafng1<\/sup>,
\nMai Vi\u1ec7t Tr\u01b0\u1eddng S\u01a1n1<\/sup>, Ch\u00e2u Th\u1ecb Thu Th\u1ee7y1<\/sup><\/p>\n

1 <\/sup>Trung t\u00e2m L\u00e2m nghi\u1ec7p Nhi\u1ec7t \u0111\u1edbi
\n2<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n

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

M\u1eadt nh\u00e2n c\u00f3 bi\u00ean \u0111\u1ed9 sinh th\u00e1i r\u1ed9ng, ph\u00e2n b\u1ed1 r\u1ea3i r\u00e1c \u1edf h\u1ea7u h\u1ebft c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng khu v\u1ef1c Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean, v\u1edbi m\u1eadt \u0111\u1ed9 trung b\u00ecnh 18 – 26 c\u00e2y\/ha, \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh \u0111\u1ea1t 7,3 – 7,9 cm, chi\u1ec1u cao b\u00ecnh qu\u00e2n t\u1eeb 7,9 – 8,7 m, tr\u1eef l\u01b0\u1ee3ng \u0111\u1ea1t t\u1eeb 0,1 – 2,2 m3<\/sup>\/ha. M\u1eadt nh\u00e2n tham gia trong c\u00e1c c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh (CTTT) t\u1ea7ng c\u00e2y cao chi\u1ebfm t\u1eeb 46,7 – 80,0% c\u00e1c l\u00e2m ph\u1ea7n \u0111i\u1ec1u tra, v\u1edbi h\u1ec7 s\u1ed1 t\u1ed5 th\u00e0nh t\u1eeb 5,1 – 13,9%. Trung b\u00ecnh c\u00f3 13 lo\u00e0i c\u00e2y t\u00e1i sinh trong m\u1ed7i l\u00e2m ph\u1ea7n \u0111i\u1ec1u tra, dao \u0111\u1ed9ng t\u1eeb 11,6 – 14,0 lo\u00e0i. M\u1eadt nh\u00e2n tham gia trong c\u00e1c CTTT t\u1ea7ng c\u00e2y t\u00e1i sinh chi\u1ebfm t\u1eeb 46,7 – 66,7% c\u00e1c l\u00e2m ph\u1ea7n \u0111i\u1ec1u tra, v\u1edbi h\u1ec7 s\u1ed1 t\u1ed5 th\u00e0nh t\u1eeb 0,7 – 2,4%. C\u00e1c lo\u00e0i c\u00e2y g\u1ed7 t\u00e1i sinh ch\u1ee7 y\u1ebfu l\u00e0 nh\u1eefng lo\u00e0i c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf kh\u00f4ng cao. Do \u0111\u00f3, \u0111\u1ec3 h\u00ecnh th\u00e0nh c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng t\u1ef1 nhi\u00ean \u1edf c\u00e1c khu v\u1ef1c nghi\u00ean c\u1ee9u c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t h\u01a1n trong th\u1eddi gian t\u1edbi c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh t\u1ed5 th\u00e0nh lo\u00e0i c\u00e2y t\u00e1i sinh \u0111\u1ec3 x\u00fac ti\u1ebfn m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y g\u1ed7 t\u00e1i sinh c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao trong CTTT lo\u00e0i nh\u01b0 D\u1ebb \u0111\u1ecf, Xoan \u0111\u00e0o, Xoay, Gi\u1ed5i nhung, S\u1ebfn m\u1ee7, D\u1ea7u r\u00e1i, D\u1ea7u tr\u00e0 beng,…<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> M\u1eadt nh\u00e2n, c\u1ea5u tr\u00fac t\u1ea7ng c\u00e2y cao, t\u00e1i sinh t\u1ef1 nhi\u00ean, Nam Trung B\u1ed9, T\u00e2y Nguy\u00ean.<\/em><\/p>\n

<\/a><\/a>STRUCTURAL CHARACTERISTICS OF TREE LAYER AND REGENERATIVE TREES WITH Eurycoma longifolia <\/em>DISTRIBUTION IN THE SOUTH CENTRAL COAST
\nAND CENTRAL HIGHLANDS<\/p>\n

<\/a><\/a>Tran Thi Thuy Hang1<\/sup>, Vo Dai Hai2<\/sup>, Duong Xuan Thang1<\/sup>, Mai Viet Truong Son1<\/sup>, Chau Thi Thu Thuy1<\/sup><\/p>\n

1 <\/sup>Tropical Forest Research Centre (TFRC)
\n2<\/sup> Vietnamese Academy of Forest Sciences<\/p>\n

summary<\/p>\n

Eurycoma longifolia <\/em>has a wide ecological amplitude, distribution throughout most forest states in South Central Coast and Central Highlands, with an average tree density of 18 to 26 trees per hectare, an average diameter of 7.3 to 7.9 cm, an average height of 7.9 to 8.7 m, and a reserve of 0.1 to 2.2 m3<\/sup>\/ha. Eurycoma longifolia <\/em>participating in the high tree strata accounted for 46.7 – 80.0% of the investigated stands, with the composition coefficient from 5.1 to 13.9%. Each examined stand has an average of 13 regenerated tree species, ranging from 11.6 to 14.0 species. The E. longifolia <\/em>participating in the regeneration plants accounted for 46.7 – 66.7% of the investigated stands, with a composition coefficient of 0.7 – 2.4%. The majority of tree species that regenerate have little economic worth. As a result, in order to create higher quality natural forest statuses in the study areas in the near future, it will be necessary to modify the nests for tree species that regenerate in order to encourage some regenerative tree species with high economic value in the conservation of species like Lithocarpus ducampii<\/em>, Pygeum arboreum<\/em>, Paramichelia braianensis<\/em>, Shorea roxburghii<\/em>, Dipterocarpus alatus<\/em>, Dipterocarpus obtusifolius<\/em>,…<\/p>\n

Keywords:<\/em><\/strong> Eurycoma longifilia<\/em>, natural regeneration, structural of tree layer, South Central Coast and Central Highlands.<\/p>\n

<\/a><\/a>\u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U TR\u00daC R\u1eeaNG T\u1ef0 NHI\u00caN THEO \u0110\u1ed8 D\u00c0Y \u0110\u1ea4T THAN B\u00d9N T\u1ea0I V\u01af\u1edcN QU\u1ed0C GIA U MINH H\u1ea0, T\u1ec8NH C\u00c0 MAU<\/p>\n

<\/a>Tr\u00e2\u0300n Kha\u0301nh Hi\u00ea\u0323u1<\/sup>, Tr\u1ea7n Qu\u1ed1c Kh\u1ea3i2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam B\u1ed9
\n2<\/sup>V\u01b0\u1eddn Qu\u1ed1c gia U Minh H\u1ea1<\/p>\n

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

S\u1ed1 li\u1ec7u c\u1ee7a k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c thu th\u1eadp t\u1eeb 12 \u00f4 \u0111o \u0111\u1ebfm cho qu\u00e2\u0300n th\u00ea\u0309 r\u01b0\u0300ng t\u01b0\u0323 nhi\u00ean \u01a1\u0309 4 c\u1ea5p \u0111\u00f4\u0323 da\u0300y than bu\u0300n kha\u0301c nhau t\u1ea1i V\u01b0\u1eddn qu\u1ed1c gia U Minh H\u1ea1, t\u1ec9nh C\u00e0 Mau: < 40 cm; 40 – 70 cm; 70 – 100 cm; 100 – 120 cm. K\u00ea\u0301t qua\u0309 nghi\u00ean c\u01b0\u0301u cho th\u00e2\u0301y m\u00e2\u0323t \u0111\u00f4\u0323 cu\u0309a ca\u0301c loa\u0300i th\u01b0\u0323c v\u00e2\u0323t th\u00e2n g\u00f4\u0303 co\u0301 xu h\u01b0\u01a1\u0301ng gia\u0309m xu\u00f4\u0301ng t\u01b0\u0300 2.667 c\u00e2y\/ha \u0111\u00f4\u0301i v\u01a1\u0301i khu v\u01b0\u0323c co\u0301 \u0111\u00f4\u0323 da\u0300y than bu\u0300n d\u01b0\u01a1\u0301i 40 cm xu\u00f4\u0301ng 540 c\u00e2y\/ha \u0111\u00f4\u0301i v\u01a1\u0301i khu v\u01b0\u0323c co\u0301 \u0111\u00f4\u0323 da\u0300y than bu\u0300n t\u01b0\u0300 100 – 120 cm. Trong khi \u0111o\u0301 \u0111\u01b0\u01a1\u0300ng ki\u0301nh bi\u0300nh qu\u00e2n, chi\u1ec1u cao va\u0300 tr\u01b0\u0303 l\u01b0\u01a1\u0323ng trung bi\u0300nh cu\u0309a ca\u0301c loa\u0300i th\u01b0\u0323c v\u00e2\u0323t th\u00e2n g\u1ed7 co\u0301 xu h\u01b0\u01a1\u0301ng t\u0103ng theo \u0111\u00f4\u0323 da\u0300y cu\u0309a t\u00e2\u0300ng \u0111\u00e2\u0301t than bu\u0300n v\u00e0 t\u1eadp trung cao nh\u1ea5t \u1edf khu v\u1ef1c c\u00f3 \u0111\u1ed9 d\u00e0y than b\u00f9n t\u1eeb 70 – 100 cm. Nghi\u00ean c\u1ee9u cu\u0303ng \u0111a\u0303 x\u00e2y d\u01b0\u0323ng \u0111\u01b0\u01a1\u0323c ca\u0301c da\u0323ng ph\u00e2n b\u00f4\u0301 ly\u0301 thuy\u00ea\u0301t gi\u01b0\u0303a ph\u00e2n b\u1ed1 s\u00f4\u0301 c\u00e2y v\u01a1\u0301i \u0111\u01b0\u01a1\u0300ng ki\u0301nh v\u00e0 chi\u00ea\u0300u cao vu\u0301t ngo\u0323n \u01b0\u0301ng v\u01a1\u0301i m\u00f4\u0303i \u0111\u00f4\u0323 da\u0300y than bu\u0300n kha\u0301c nhau b\u0103\u0300ng ha\u0300m ph\u00e2n b\u00f4\u0301 ly\u0301 thuy\u00ea\u0301t Weibull. \u0110\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao tr\u00ean c\u00e1c c\u1ea5p \u0111\u1ed9 d\u00e0y than b\u00f9n c\u00f3 m\u1ed1i li\u00ean h\u00ea\u0323 ch\u1eb7t ch\u1ebd, k\u1ebft qu\u1ea3 cho th\u1ea5y h\u00e0m parabol b\u1eadc 2 ph\u00f9 h\u1ee3p \u0111\u1ec3 m\u00f4 t\u1ea3 m\u1ed1i quan h\u1ec7 n\u00e0y. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 V\u01b0\u1eddn Qu\u1ed1c gia U Minh H\u1ea1 x\u00e2y d\u1ef1ng c\u00e1c bi\u1ec7n ph\u00e1p l\u00e2m sinh ph\u00f9 h\u1ee3p \u0111\u1ea3m b\u1ea3o cho s\u1ef1 sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a r\u1eebng t\u01b0\u0323 nhi\u00ean \u0111ang ph\u00e2n b\u00f4\u0301 \u01a1\u0309 \u0111\u00e2y.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e0 Mau, c\u1ea5u tr\u00fac, than bu\u0300n, V\u01b0\u1eddn Qu\u1ed1c gia U Minh H\u1ea1<\/p>\n

<\/a><\/a>STRUCTURAL CHARACTERISTICS OF NATURAL FORESTAT PEATLAND THICKNESS
\nIN U MINH HA NATIONAL PARK, CA MAU PROVINCE<\/p>\n

<\/a><\/a>Tran Khanh Hieu1<\/sup>, Tran Quoc Khai2<\/sup><\/p>\n

1<\/sup> Forest Science Institute of South Vietnam
\n2<\/sup> U Minh Ha National Park<\/p>\n

summary<\/p>\n

The data of the research results were collected from 12 plots for natural forest populations at different peatland thicknesses in U Minh Ha National Park, Ca Mau province: < 40 cm; 40 – 70 cm; 70 – 100 cm; 100 – 120 cm. Research results show that the density of woody plant species tends to decrease from 2,667 trees\/ha for areas with peatland thickness less 40 cm to 540 trees\/ha for areas with peatland thickness from 100 – 120 cm. Meanwhile, the average diameter, height and mass plants tend to increase with the thickness of the peatland layer and are highest concentrated in areas with peatland thickness from 70 – 100 cm. The study had also built the theoretical distribution forms between the distribution of the number of trees with the diameter and height of the tops corresponding to each different peatland thickness by the Weibull theoretical distribution function. The diameter and height on the peatland thickness were closely related, the results show that the quadratic parabolic function was suitable to describe this relationship. This study was the datanalysis for U Minh Ha National Park to develop appropriate silvicultural measures to ensure the growth and development of the natural forests distributed here.<\/p>\n

Keywords:<\/em><\/strong> Ca Mau, structural, peatland, U Minh Ha National Park<\/p>\n

\u00a0<\/strong><\/p>\n

<\/a><\/a>C\u00d4NG NGH\u1ec6 DART – TOFMS
\nM\u1ed8T B\u01af\u1edaC \u0110I M\u1edaI TRONG GI\u00c1M \u0110\u1ecaNH G\u1ed6 T\u1ea0I VI\u1ec6T NAM<\/p>\n

<\/a>V\u00f5 \u0110\u1ea1i H\u1ea3i1<\/sup>, Nguy\u1ec5n B\u1ea3o Ng\u1ecdc2<\/sup>, B\u00f9i Duy Ng\u1ecdc2<\/sup>, Nguy\u1ec5n \u0110\u1ee9c Th\u00e0nh2<\/sup>,
\nNguy\u1ec5n T\u1eed Kim2<\/sup>, Ho\u00e0ng Nguy\u1ec5n Vi\u1ec7t Hoa1<\/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 C\u00f4ng nghi\u1ec7p r\u1eebng<\/p>\n

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

Vi\u1ec7t Nam \u0111ang ph\u1ea5n \u0111\u1ea5u tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng trung t\u00e2m ch\u1ebf bi\u1ebfn g\u1ed7 xu\u1ea5t kh\u1ea9u h\u00e0ng \u0111\u1ea7u th\u1ebf gi\u1edbi. M\u1ee5c ti\u00eau gi\u00e1 tr\u1ecb xu\u1ea5t kh\u1ea9u \u0111\u1ed3 g\u1ed7 v\u00e0 l\u00e2m s\u1ea3n \u0111\u1ebfn n\u0103m 2025 \u0111\u1ea1t 18 – 20 t\u1ef7 USD, \u0111\u1ebfn n\u0103m 2030 \u0111\u1ea1t 23 – 25 t\u1ef7 USD. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau n\u00e0y, c\u1ea7n x\u00e2y d\u1ef1ng v\u00e0 v\u1eadn h\u00e0nh H\u1ec7 th\u1ed1ng \u0111\u1ea3m b\u1ea3o g\u1ed7 h\u1ee3p ph\u00e1p c\u1ee7a Vi\u1ec7t Nam ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c cam k\u1ebft v\u00e0 th\u1ecfa thu\u1eadn qu\u1ed1c t\u1ebf, qua \u0111\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng 100% nguy\u00ean li\u1ec7u g\u1ed7 s\u1eed d\u1ee5ng trong to\u00e0n b\u1ed9 c\u00e1c chu\u1ed7i gi\u00e1 tr\u1ecb l\u00e0 h\u1ee3p ph\u00e1p. Xu\u1ea5t ph\u00e1t t\u1eeb v\u1ea5n \u0111\u1ec1 \u0111\u00f3, C\u1ee5c L\u00e2m nghi\u1ec7p Hoa K\u1ef3 \u0111\u00e3 \u0111\u1ed3ng \u00fd \u0111\u1ea7u t\u01b0 cho Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam c\u00f4ng ngh\u1ec7 gi\u00e1m \u0111\u1ecbnh g\u1ed7 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch tr\u1ef1c ti\u1ebfp ph\u1ed5 kh\u1ed1i trong th\u1eddi gian th\u1ef1c, th\u1eddi gian bay (DART-TOFMS). C\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i cho k\u1ebft qu\u1ea3 nhanh v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao gi\u00fap c\u00e1c l\u1ef1c l\u01b0\u1ee3ng th\u1ef1c thi ph\u00e1p lu\u1eadt nhanh ch\u00f3ng ph\u00e1t hi\u1ec7n, x\u1eed l\u00fd k\u1ecbp th\u1eddi c\u00e1c tr\u01b0\u1eddng h\u1ee3p bu\u00f4n b\u00e1n, v\u1eadn chuy\u1ec3n g\u1ed7 tr\u00e1i ph\u00e1p lu\u1eadt v\u00e0 t\u0103ng c\u01b0\u1eddng ki\u1ec3m so\u00e1t g\u1ed7 b\u1ea5t h\u1ee3p ph\u00e1p \u1edf trong n\u01b0\u1edbc v\u00e0 trong th\u01b0\u01a1ng m\u1ea1i g\u1ed7 qu\u1ed1c t\u1ebf h\u01b0\u1edbng t\u1edbi chu\u1ed7i cung \u1ee9ng g\u1ed7 minh b\u1ea1ch, c\u00f3 tr\u00e1ch nhi\u1ec7m v\u00e0 b\u1ec1n v\u1eefng. Ngo\u00e0i ra, v\u1edbi \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a c\u00f4ng ngh\u1ec7 gi\u00e1m \u0111\u1ecbnh g\u1ed7 DART-TOFMS s\u1ebd gi\u00fap doanh nghi\u1ec7p xu\u1ea5t nh\u1eadp kh\u1ea9u ti\u1ebft ki\u1ec7m \u0111\u00e1ng k\u1ec3 c\u00e1c chi ph\u00ed li\u00ean quan \u0111\u1ebfn logistic.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ph\u1ed5 kh\u1ed1i, th\u1eddi gian th\u1ef1c, th\u1eddi gian bay, Logistic, gi\u00e1m \u0111\u1ecbnh g\u1ed7<\/p>\n

<\/a><\/a>DART – TOFMS TECHNOLOGY
\nA NEW STEP FOR WOOD IDENTIFICATION IN VIETNAM<\/p>\n

<\/a><\/a>Vo Dai Hai1<\/sup>, Nguyen Bao Ngoc2<\/sup>, Bui Duy Ngoc2<\/sup>, Nguyen Duc Thanh2<\/sup>,
\nNguyen Tu Kim2<\/sup>, Hoang Nguyen Viet Hoa1<\/sup><\/p>\n

1<\/sup>Vietnamese Academy of Forest Sciences
\n2<\/sup> Forest Industry Research Institute<\/p>\n

SUMMARY<\/p>\n

Vietnam has been striving to be one of the world\u2019s leading processing centers of export timber. Vietnam\u2019s wood and wooden product exports are expected to reach 18 – 20 billion USD by 2025 and 23 – 25 billion USD by 2030. To achieve this goal, it is necessary to establish and implement the Vietnam Timber Legality Assurance System in accordance with international commitments and agreements, thereby ensuring that 100% of the wood materials are legally sourced and traded throughout the entire value chain. Stemming from that issue, the US Forest Service has agreed to donate to Vietnamese Academy of Forest Sciences a mass spectrometry equipment (AccuTOF mass spectrometer) for the identification of wood using DART- TOFMS technology (Direct Analysis in Real Time – Time of Flight Mass Spectrometry). The state-of-the-art technology produces results quickly with high accuracy. This helps the law enforcement agencies to detect and promptly handle cases of illegal timber trade and transportation towards a transparent, responsible and sustainable timber supply chain. In addition, with the outstanding advantages of DART-TOFMS technology, it definitely helps wood import and export enterprises save significant costs in relation to logistics.<\/p>\n

Keywords:<\/em> <\/strong>Mass spectrometry, direct analysis in real time, time of flight mass spectrometry, Logistic, wood identification.<\/p>\n

<\/a><\/a>NGHI\u00caN C\u1ee8U TH\u00c0NH PH\u1ea6N H\u00d3A H\u1eccC V\u00c0 T\u00cdNH CH\u1ea4T\u00a0C\u1ee6A S\u1ee2I CELLULOSE T\u1eea TRE GAI Bambusa blumeana<\/em><\/p>\n

<\/a>Ho\u00e0ng Minh Khoa1<\/sup>, Kazakov Ya. V1<\/sup>., \u041e\u043a\u0443\u043b\u043e\u0432\u0430 \u0415.\u041e1<\/sup>., Chu C\u00f4ng Ngh\u1ecb2<\/sup><\/p>\n

1<\/sup>Northern Arctic Federal University, Severnaya Dvina Emb. 17, Arkhangelsk, Russia
\n2 <\/sup>Ph\u00e2n hi\u1ec7u Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p t\u1ea1i t\u1ec9nh \u0110\u1ed3ng Nai<\/p>\n

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

Trong nghi\u00ean c\u1ee9u n\u00e0y ch\u00fang t\u00f4i ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u v\u1ec1 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 nh\u1eefng t\u00ednh ch\u1ea5t c\u1ee7a s\u1ee3i cellulose Tre gai Bambusa blumeana<\/em> b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p n\u1ea5u b\u1ed9t sulfate. Cellulose nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb qu\u00e1 tr\u00ecnh n\u1ea5u \u0111em ph\u00e2n t\u00edch b\u1eb1ng k\u00ednh hi\u1ec3n vi \u0111i\u1ec7n t\u1eed \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 d\u00e0i, \u0111\u1ed9 d\u00e0y, \u0111\u1ed9 cong v\u00e0 \u0111\u1ed9 nh\u1eb5n b\u1ec1 m\u1eb7t s\u1ee3i cellulose. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch h\u00f3a h\u1ecdc t\u1eeb th\u00e2n Tre gai cho th\u1ea5y h\u00e0m l\u01b0\u1ee3ng cellulose trong \u0111\u00f3 l\u00e0 45,3%, lignin 26,8%, c\u00e1c ch\u1ea5t chi\u1ebft xu\u1ea5t v\u1edbi n\u01b0\u1edbc n\u00f3ng 8,6%, c\u00e1c ch\u1ea5t chi\u1ebft xu\u1ea5t v\u1edbi dung m\u00f4i h\u1eefu c\u01a1 1,0% v\u00e0 h\u00e0m l\u01b0\u1ee3ng tro 1,35%. C\u00f9ng v\u1edbi vi\u1ec7c ph\u00e2n t\u00edch c\u1ea5u t\u1ea1o hi\u1ec3n vi, k\u1ebft lu\u1eadn r\u1eb1ng nguy\u00ean li\u1ec7u th\u00f4 n\u00e0y c\u00f3 ti\u1ec1m n\u0103ng thu \u0111\u01b0\u1ee3c b\u1ed9t gi\u1ea5y k\u1ef9 thu\u1eadt, l\u00e0 ngu\u1ed3n nguy\u00ean li\u1ec7u ti\u1ec1m n\u0103ng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p s\u1ea3n xu\u1ea5t cellulose gi\u1ea5y.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Tre gai, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, cellulose, t\u00edch ch\u1ea5t cellulose, n\u1ea5u b\u1ed9t gi\u1ea5y sulfate<\/p>\n

<\/a><\/a>Research on chemical composition and properties of cellulose fiber from Bambusa blumeana<\/em><\/strong><\/p>\n

<\/a>Hoang Minh Khoa1<\/sup>, Kazakov Ya. V1<\/sup>., \u041e\u043a\u0443\u043b\u043e\u0432\u0430 \u0415.\u041e 1<\/sup>., Chu Cong Nghi2<\/sup><\/p>\n

1<\/sup>Northern Arctic Federal University, Severnaya Dvina Emb. 17, Arkhangelsk, Russia
\n2 <\/sup>Vietnam National University of Forestry – Dongnai Campus<\/p>\n

SUMMARY<\/p>\n

The objectives of this research were to investigate the chemical compositions, and cellulose properties of the Bambusa blumeana<\/em> using cooking sulfate method. The length, thickness, curvature, and smoothness of the cellulose fiber surface, which is obtained from the cooking process, were determined by an electron microscope. The chemical analysis showed that the cellulose content of 45.3%, the lignin content of 26.8%, the content of the extracts with hot water of 8.6%, these content with organic solvent of 1.0%, and the ash content of 1.35%. The microscopic analysis demonstrated that this raw material has a high potential for making technical pulp. Therefore, Bambusa blumeana<\/em> is a high-potential material source in the pulp and paper industry.<\/p>\n

Keywords<\/em><\/strong>:<\/em><\/strong> Bambusa blumeana<\/em>, chemical composition, cellulose, properties of cellulose, sulfate cooking<\/p>\n

\u00a0<\/em><\/p>\n

<\/a><\/a>HI\u1ec6U L\u1ef0C C\u1ee6A M\u1ed8T S\u1ed0 CH\u1ebe PH\u1ea8M B\u1ea2O QU\u1ea2N PH\u00d2NG CH\u1ed0NG\u00a0M\u1eccT TRE G\u00c2Y H\u1ea0I L\u00d9NG (Bambusa Longgissia <\/em>sp. nov.)\u00a0L\u00c0M H\u00c0NG TH\u1ee6 C\u00d4NG M\u1ef8 NGH\u1ec6<\/p>\n

<\/a>Ho\u00e0ng Th\u1ecb T\u00e1m1<\/sup>, Phan V\u0103n Th\u1eafng2<\/sup>, Nguy\u1ec5n Th\u1ecb H\u1eb1ng1<\/sup>,
\n\u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc1<\/sup>, B\u00f9i Th\u1ecb Th\u1ee7y1<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng
\n2<\/sup>Trung t\u00e2m Nghi\u00ean c\u1ee9u L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7<\/p>\n

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

L\u00f9ng (Bambusa longgissia<\/em> sp. nov.) l\u00e0 m\u1ed9t lo\u00e0i tre c\u00f3 \u0111\u1eb7c t\u00ednh d\u1ebbo, d\u1ec5 u\u1ed1n, m\u00e0u tr\u1eafng \u0111\u1eb9p n\u00ean t\u1eeb l\u00e2u v\u1edbi b\u00e0n tay kh\u00e9o l\u00e9o c\u1ee7a ng\u01b0\u1eddi d\u00e2n \u0111\u00e3 t\u1ea1o ra c\u00e1c m\u1eb7t h\u00e0ng gia d\u1ee5ng, s\u1ea3n ph\u1ea9m m\u1ef9 ngh\u1ec7 \u0111\u01b0\u1ee3c th\u1ecb tr\u01b0\u1eddng trong n\u01b0\u1edbc v\u00e0 th\u1ebf gi\u1edbi \u01b0a chu\u1ed9ng, mang l\u1ea1i gi\u00e1 tr\u1ecb kinh t\u1ebf l\u1edbn. Tuy nhi\u00ean, nguy\u00ean li\u1ec7u L\u00f9ng sau khai th\u00e1c r\u1ea5t d\u1ec5 b\u1ecb M\u1ecdt tre v\u00e0 M\u1ecdt c\u00e1m g\u00e2y hai. K\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m hi\u1ec7u l\u1ef1c b\u1ea3o qu\u1ea3n c\u1ee7a m\u1ed9t s\u1ed1 ch\u1ebf ph\u1ea9m \u0111\u1ed1i v\u1edbi nguy\u00ean li\u1ec7u L\u00f9ng d\u1ea1ng ch\u1ebb thanh \u0111\u00e3 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu L\u00f9ng \u0111\u01b0\u1ee3c ng\u00e2m trong dung d\u1ecbch ch\u1ebf ph\u1ea9m LN5<\/sub> n\u1ed3ng \u0111\u1ed9 5% v\u1edbi th\u1eddi gian 24h v\u00e0 m\u1eabu L\u00f9ng nh\u00fang trong ch\u1ebf ph\u1ea9m BORAG1<\/sub>, BORAG2<\/sub> th\u1eddi gian 1 ph\u00fat \u0111\u1ec1u \u0111\u1ea1t hi\u1ec7u l\u1ef1c t\u1ed1t ph\u00f2ng ch\u1ed1ng m\u1ecdt. C\u00e1c ch\u1ebf ph\u1ea9m LN5, <\/sub>BORAG1<\/sub>, BORAG2<\/sub> c\u00f3 kh\u1ea3 n\u0103ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng t\u1ed1t \u0111\u1ec3 b\u1ea3o qu\u1ea3n nguy\u00ean li\u1ec7u L\u00f9ng trong s\u1ea3n xu\u1ea5t h\u00e0ng th\u1ee7 c\u00f4ng m\u1ef9 ngh\u1ec7.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ch\u1ebf ph\u1ea9m b\u1ea3o qu\u1ea3n l\u00e2m s\u1ea3n, L\u00f9ng, h\u00e0ng th\u1ee7 c\u00f4ng m\u1ef9 ngh\u1ec7<\/p>\n

<\/a><\/a>RESULTS OF TESTING THE PRESERVATIONS TREAT Bambusa longgissia<\/em> sp. nov.
\nAGAINST Dinoderus minutus<\/em> FOR MAKING HANDICRAFT GOODS<\/p>\n

<\/a><\/a>Hoang Thi Tam1<\/sup>, Phan Van Thang2<\/sup>, Nguyen Thi Hang1<\/sup>, Doan Thi Bich Ngoc1<\/sup>, Bui Thi Thuy1<\/sup><\/p>\n

\u00a01<\/sup>Forest Industry Research Institute, Vietnamese Academy of Forest Sciences
\n2<\/sup>Non-Timber Forest Products Research Centre, Vietnamese Academy of Forest Sciences<\/p>\n

SUMMARY<\/p>\n

Bambusa longgissia <\/em>sp. nov. has a high toughness and a surface with beautiful white color. It therefore, has been used to produce household goods and handicrafts serving not only the domestic but also the international market to contribute great economic value to the Viet Nam economy. However, the material is easily attacked by powderpost beetles such as Dinoderus minutus<\/em> F. and Lyctus brunneus<\/em> S.. In this study some preservative preparations have been studied to preserve split rods of Bambusa longgissia <\/em>sp.nov against Dinoderus minutus<\/em> F. The results showed that split rods treated with preservative solution of 5% LN5 <\/sub>for 24 hours are durable against the powderpost beetle. A similar result also was obtained with samples dipped into BORAG1<\/sub> and BORAG2 <\/sub>preservatives for 1 minute. From obtained results, the suggested preservative products may be used to protect raw materials of B. longgissia<\/em> in practice of processing.<\/p>\n

Keywords<\/em>:<\/strong> Forest products preservative, Bambusa longgissia<\/em> sp. nov., handicrafts<\/p>\n

<\/a><\/a>ANALYSIS OF POLICIES ON NATURAL FOREST RESTORATION\u00a0AND RECOMMENDATIONS FOR THE REVISION<\/p>\n

<\/a>Hoang Nguyen Viet Hoa1<\/sup>, Vo Dai Nguyen2<\/sup>, Dang Quang Hung3<\/sup><\/p>\n

1<\/sup>Vietnamese Academy of Forest Sciences
\n2<\/sup>Silvicultural Research Insititute
\n3<\/sup>Research Insititute for Forest Ecology and Environment<\/p>\n

SUMMARY<\/p>\n

Vietnam owns nearly 10.2 million ha of natural forest, accounting for 69% of the forest land area nationwide. Natural forest plays a significant and strategic role in economic, social, and environmental development. However, for many reasons, this type of forest has been seriously degraded in both quantity and quality. The government has promulgated a system of policies on natural forest restoration, which has created a legal corridor for natural forest restoration in Vietnam. Nevertheless, the result of natural forest restoration during the past years has been very low because of Vietnam\u2019s \u201clogging ban\u201d policy, in which all activities impacted on natural forest are prohibited. The policies and techniques for forest restoration are inappropriate to the situation and do not attract the participation of the different stakeholders. Therefore, boosting the natural forest restoration in Vietnam requires a new perspective with the approach of multi-direction and sustainability. It is necessary to revise a range of related policies, such as management, benefit-sharing mechanism, investment, P-FES, and the specific regulations on silvicultural techniques, as well as identify priority areas for restoration, focusing on poor and extremely poor forests.<\/p>\n

Keywords:<\/em><\/strong> Natural forest, forest restoration, policies.<\/p>\n

<\/a><\/a>PH\u00c2N T\u00cdCH C\u00c1C CH\u00cdNH S\u00c1CH PH\u1ee4C H\u1ed2I R\u1eeaNG T\u1ef0 NHI\u00caN\u00a0V\u00c0 NH\u1eeeNG \u0110\u1ecaNH H\u01af\u1edaNG \u0110\u1ec0 XU\u1ea4T S\u1eecA \u0110\u1ed4I<\/p>\n

<\/a><\/a>Ho\u00e0ng Nguy\u1ec5n Vi\u1ec7t Hoa1<\/sup>, V\u00f5 \u0110\u1ea1i Nguy\u00ean2<\/sup>, \u0110\u1eb7ng Quang H\u01b0ng3<\/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 L\u00e2m sinh
\n3<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n

T\u00f3m t\u1eaft<\/p>\n

Vi\u1ec7t Nam c\u00f3 10.171.757 ha r\u1eebng t\u1ef1 nhi\u00ean, chi\u1ebfm 69,0% di\u1ec7n t\u00edch \u0111\u1ea5t c\u00f3 r\u1eebng c\u1ea3 n\u01b0\u1edbc. R\u1eebng t\u1ef1 nhi\u00ean c\u00f3 vai tr\u00f2 chi\u1ebfn l\u01b0\u1ee3c r\u1ea5t quan tr\u1ecdng trong ph\u00e1t tri\u1ec3n kinh t\u1ebf, x\u00e3 h\u1ed9i v\u00e0 m\u00f4i tr\u01b0\u1eddng, tuy nhi\u00ean do nhi\u1ec1u nguy\u00ean nh\u00e2n \u0111\u1ed1i t\u01b0\u1ee3ng r\u1eebng n\u00e0y \u0111\u00e3 b\u1ecb suy tho\u00e1i nghi\u00eam tr\u1ecdng c\u1ea3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng. Ch\u00ednh ph\u1ee7 \u0111\u00e3 ban h\u00e0nh h\u1ec7 th\u1ed1ng c\u00e1c ch\u00ednh s\u00e1ch v\u1ec1 ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean, c\u01a1 b\u1ea3n \u0111\u00e3 t\u1ea1o \u0111\u01b0\u1ee3c h\u00e0nh lang ph\u00e1p l\u00fd cho ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean \u1edf Vi\u1ec7t Nam. M\u1eb7c d\u00f9 v\u1eady, k\u1ebft qu\u1ea3 ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean trong th\u1eddi gian qua \u0111\u1ea1t \u0111\u01b0\u1ee3c r\u1ea5t th\u1ea5p do Vi\u1ec7t Nam \u0111ang \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p \u201c\u0111\u00f3ng c\u1eeda\u201d r\u1eebng t\u1ef1 nhi\u00ean, c\u1ea5m m\u1ecdi t\u00e1c \u0111\u1ed9ng v\u00e0o r\u1eebng t\u1ef1 nhi\u00ean, c\u00e1c ch\u00ednh s\u00e1ch v\u00e0 k\u1ef9 thu\u1eadt ph\u1ee5c h\u1ed3i ch\u01b0a ph\u00f9 h\u1ee3p v\u00e0 ch\u01b0a thu h\u00fat \u0111\u01b0\u1ee3c s\u1ef1 tham gia c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c nhau. \u0110\u1ec3 th\u00fac \u0111\u1ea9y ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean \u1edf Vi\u1ec7t Nam, c\u1ea7n ph\u1ea3i c\u00f3 quan \u0111i\u1ec3m v\u00e0 c\u00e1ch ti\u1ebfp c\u1ea7n m\u1edbi theo h\u01b0\u1edbng \u0111a t\u00e1c d\u1ee5ng v\u00e0 b\u1ec1n v\u1eefng. C\u1ea7n s\u1eeda \u0111\u1ed5i c\u00e1c ch\u00ednh s\u00e1ch v\u1ec1 qu\u1ea3n l\u00fd, h\u01b0\u1edfng l\u1ee3i, \u0111\u1ea7u t\u01b0, chi tr\u1ea3 d\u1ecbch v\u1ee5 m\u00f4i tr\u01b0\u1eddng r\u1eebng, c\u00e1c quy \u0111\u1ecbnh c\u1ee5 th\u1ec3 v\u1ec1 c\u00e1c bi\u1ec7n ph\u00e1p l\u00e2m sinh; x\u00e1c \u0111\u1ecbnh c\u00e1c khu v\u1ef1c \u01b0u ti\u00ean cho ph\u1ee5c h\u1ed3i v\u1edbi \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee5c h\u1ed3i ch\u00ednh l\u00e0 r\u1eebng ngh\u00e8o, ngh\u00e8o ki\u1ec7t.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>R\u1eebng t\u1ef1 nhi\u00ean, ph\u1ee5c h\u1ed3i r\u1eebng, ch\u00ednh s\u00e1ch<\/p>\n","protected":false},"excerpt":{"rendered":"

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 3 – 2023 1. Nghi\u00ean c\u1ee9u ch\u1ecdn l\u1ecdc d\u00f2ng v\u00f4 t\u00ednh b\u1ea1ch \u0111\u00e0n lai sinh tr\u01b0\u1edfng nhanh t\u1ea1i M\u01b0\u1eddng \u1ea2ng, \u0110i\u1ec7n Bi\u00ean Selection of fast-growing eucalyptus hybrid clones in Muong Ang, Dien Bien Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean \u0110\u1ed7 H\u1eefu S\u01a1n L\u00e3 Tr\u01b0\u1eddng Giang Ng\u00f4 V\u0103n Ch\u00ednh 3 2. Nghi\u00ean […]<\/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\/2478"}],"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=2478"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2478\/revisions"}],"predecessor-version":[{"id":2481,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2478\/revisions\/2481"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}