{"id":1457,"date":"2023-12-31T14:38:05","date_gmt":"2023-12-31T07:38:05","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=1457"},"modified":"2024-01-22T09:46:58","modified_gmt":"2024-01-22T02:46:58","slug":"tap-chi-khoa-hoc-lam-nghiep-so-2-2015","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2023\/12\/tap-chi-khoa-hoc-lam-nghiep-so-2-2015\/","title":{"rendered":"Vietnam Journal of Forest Science Number 6-2023"},"content":{"rendered":"

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

<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 <\/strong>6<\/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\n\n\n
1.<\/td>\nBi\u1ebfn d\u1ecb di truy\u1ec1n v\u1ec1 sinh tr\u01b0\u1edfng, \u0111\u1ed9 th\u1eb3ng th\u00e2n v\u00e0
\nc\u00e0nh nh\u1ecf c\u1ee7a lo\u00e0i Keo l\u00e1
\ntr\u00e0m (Acacia auriculiformis<\/em>)
\ntrong kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf
\nt\u1ea1i \u0110\u1ed3ng Ph\u00fa, B\u00ecnh Ph\u01b0\u1edbc<\/td>\n		Genetic variation, stem straightness and brach thickness of Acacia auriculiformis<\/em> in progeny
\ntrial in Dong Phu,
\nBinh Phuoc<\/td>\n		Nguy\u1ec5n V\u0103n \u0110\u0103ng
\nV\u0169 \u0110\u00ecnh H\u01b0\u1edfng
\nKi\u1ec1u M\u1ea1nh H\u00e0
\nH\u1ed3 T\u1ed1 Vi\u1ec7t
\nNguy\u1ec5n Xu\u00e2n H\u1ea3i
\n\u0110\u1ed7 H\u1eefu S\u01a1n
\nD\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n<\/td>\n		3<\/td>\n<\/tr>\n
2.<\/td>\n\u0110\u00e1nh gi\u00e1 m\u1ed1i quan h\u1ec7 di truy\u1ec1n c\u00e2y Th\u1ea3o qu\u1ea3 (Amomum aromaticum<\/em> Roxb.) t\u1ea1i m\u1ed9t s\u1ed1 qu\u1ea7n th\u1ec3 thu\u1ed9c c\u00e1c t\u1ec9nh mi\u1ec1n n\u00fai
\nph\u00eda B\u1eafc<\/td>\n		Evaluation of the genetic relations of Amomum aromaticum<\/em> Roxb. trees collected at populations in provinces of Northern mountain area<\/td>\nPhan V\u0103n Th\u1eafng
\nNguy\u1ec5n Th\u1ecb Hi\u1ec1n
\nPh\u00f9ng Nhu\u1ec7 Giang
\nV\u00f5 \u0110\u1ea1i H\u1ea3i
\nTr\u1ea7n H\u1ed3 Quang<\/td>\n		12<\/td>\n<\/tr>\n
3.<\/td>\nSinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y c\u1ee7a c\u00e1c gi\u1ed1ng
\nkeo lai (Acacia mangium<\/em> \u00d7 Acacia auriculiformis<\/em>)
\ntrong kh\u1ea3o nghi\u1ec7m m\u1edf r\u1ed9ng t\u1ea1i \u0110\u1ecbnh Qu\u00e1n, \u0110\u1ed3ng Nai<\/td>\n		Growth and stem quality character of accia hybrid (Acacia mangium<\/em> \u00d7 Acacia auriculiformis<\/em>) clones in extended trial at Dinh Quan, Dong Nai<\/td>\nD\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n
\nNg\u00f4 V\u0103n Ch\u00ednh
\n\u0110\u1ed7 Thanh T\u00f9ng
\nQu\u00e1ch M\u1ea1nh T\u00f9ng
\nPhan \u0110\u1ee9c Ch\u1ec9nh<\/td>\n		19<\/td>\n<\/tr>\n
4.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng
\nb\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nu\u00f4i c\u1ea5y m\u00f4 c\u00e1c d\u00f2ng keo tam b\u1ed9i X201 v\u00e0 X205<\/td>\n		Study on the propagation
\nof triploid acacia hybrid clones X201 and X205 by tissue culture<\/td>\n		L\u00ea S\u01a1n
\nMai Th\u1ecb Ph\u01b0\u01a1ng Th\u00fay
\nTr\u01b0\u01a1ng Th\u1ecb Th\u00f9y Linh
\nNguy\u1ec5n Th\u1ecb Kim Thanh
\nL\u01b0u Th\u1ecb Qu\u1ef3nh
\nNguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc<\/td>\n		28<\/td>\n<\/tr>\n
5.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng
\nm\u1ed9t s\u1ed1 d\u00f2ng b\u1ea1ch \u0111\u00e0n lai (Eucalyptus urophylla<\/em> \u00d7 Eucalyptus grandis<\/em>) UG105, UG111, UG117 b\u1eb1ng k\u1ef9
\nthu\u1eadt nu\u00f4i c\u1ea5y in vitro<\/em><\/td>\n		In vitro<\/em> propagation of new Eucalyptus hybrid clones
\n(Eucalyptus urophylla <\/em>\u00b4 Eucalyptus <\/em>grandis<\/em>) UG105, UG111 and UG117<\/td>\n		L\u00ea Th\u1ecb Hoa
\nMai Th\u1ecb Ph\u01b0\u01a1ng Th\u00fay
\n\u0110\u1ed7 H\u1eefu S\u01a1n
\nV\u0103n Thu Huy\u1ec1n
\nHo\u00e0ng Th\u1ecb H\u1ed3ng H\u1ea1nh Ng\u00f4 Thu H\u1ea3o
\nNguy\u1ec5n Th\u1ecb H\u1ed3ng<\/td>\n		37<\/td>\n<\/tr>\n
6.<\/td>\nNghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 bi\u1ec7n
\nph\u00e1p k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng
\nv\u00f4 t\u00ednh c\u00e2y X\u1ea1 \u0111en (Ehretia asperula<\/em> Zollinger Et Moritzi)<\/td>\n		Some technical methods
\nfor asexual propagation
\nof Ehretia asperula<\/em> Zollinger
\nEt Moritzi<\/td>\n		Ng\u00f4 \u0110\u1ee9c Nh\u1ea1c
\nL\u00ea \u0110o\u00e0n Duy
\nL\u00ea Minh C\u01b0\u1eddng
\nNguy\u1ec5n C\u00f4ng Ph\u01b0\u01a1ng
\n\u0110\u1eb7ng Th\u1ecb Tuy\u1ebft
\nTr\u1ea7n Thanh S\u01a1n
\nV\u00f5 Th\u1ecb Th\u1ea3o
\nNguy\u1ec5n \u0110\u1ee9c Long<\/td>\n		53<\/td>\n<\/tr>\n
7.<\/td>\n\u0110\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng, n\u0103ng su\u1ea5t v\u00e0 ch\u1ecdn l\u1ecdc c\u00e2y tr\u1ed9i
\nc\u1ee7a m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba t\u1ea1i t\u1ec9nh Qu\u1ea3ng Ninh<\/td>\n		Evaluation of growth, productivity and selection
\nplus tree of some indigenous tree species in Quang Ninh province<\/td>\n		Cao V\u0103n L\u1ea1ng
\nL\u00e2m V\u0103n Phong
\nLa \u00c1nh D\u01b0\u01a1ng
\nV\u0169 V\u0103n Thi\u1ec7n
\nDo\u00e3n Ho\u00e0ng S\u01a1n<\/td>\n		62<\/td>\n<\/tr>\n
8.<\/td>\n\u0110a d\u1ea1ng sinh h\u1ecdc lo\u00e0i c\u00e2y g\u1ed7 t\u1ea1i r\u1eebng t\u1ef1 nhi\u00ean huy\u1ec7n
\nBa Ch\u1ebd, t\u1ec9nh Qu\u1ea3ng Ninh<\/td>\n		Diversity of forest tree
\nspecies in nature forests,
\nBa Che district, Quang Ninh province<\/td>\n		Nguy\u1ec5n To\u00e0n Th\u1eafng
\nTr\u1ea7n V\u0103n \u0110\u00f4
\nNguy\u1ec5n Tr\u1ecdng Minh
\nHo\u00e0ng Thanh S\u01a1n
\nPh\u00f9ng \u0110\u00ecnh Trung
\nNguy\u1ec5n V\u0103n Tu\u1ea5n
\n\u0110\u00e0o Trung \u0110\u1ee9c<\/td>\n		71<\/td>\n<\/tr>\n
9.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u v\u00e0 ch\u1ebf \u0111\u1ed9 che s\u00e1ng \u0111\u1ebfn sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u00e2y con Re g\u1eebng (Cinnamomum bejolghota<\/em> (Buch-Ham) giai \u0111o\u1ea1n
\nv\u01b0\u1eddn \u01b0\u01a1m<\/td>\n		Influence of gallery composition and covering regime to the growth and development of plants Cinnamomum bejolghota<\/em> (Buch-Ham) nurture phase<\/td>\nNguy\u1ec5n H\u1eefu Th\u1ecbnh
\nL\u1ea1i Thanh H\u1ea3i
\nNguy\u1ec5n Th\u00f9y D\u01b0\u01a1ng<\/td>\n		78<\/td>\n<\/tr>\n
10.<\/td>\nC\u1ea5u tr\u00fac, \u0111a d\u1ea1ng lo\u00e0i v\u00e0
\nsinh kh\u1ed1i tr\u00ean m\u1eb7t \u0111\u1ea5t c\u1ee7a r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh
\n\u1edf V\u01b0\u1eddn Qu\u1ed1c gia Phia O\u1eafc – Phia \u0110\u00e9n<\/td>\n		Structure, species diversity
\nand aboveground biomass of evergreen broadleaf forests
\nin Phia Oac – Phia Den National Park<\/td>\n		Qu\u1ed1c Minh D\u0169ng
\nNguy\u1ec5n Th\u1ecb H\u01b0\u01a1ng Ly
\nL\u00ea Anh Thanh
\nNguy\u1ec5n V\u0103n Qu\u00fd<\/td>\n		88<\/td>\n<\/tr>\n
11.<\/td>\nM\u1ed1i quan h\u1ec7 c\u1ee7a Re g\u1eebng (Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet) v\u1edbi c\u00e1c lo\u00e0i c\u00e2y b\u1ea1n trong m\u1ed9t s\u1ed1 tr\u1ea1ng th\u00e1i r\u1eebng t\u1ef1 nhi\u00ean<\/td>\nRelationships of Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet) with tree species you are in some natural forest state<\/td>\nL\u1ea1i Thanh H\u1ea3i
\nNguy\u1ec5n H\u1eefu Th\u1ecbnh<\/td>\n		98<\/td>\n<\/tr>\n
12.<\/td>\n\u0110\u00e1nh gi\u00e1 di\u1ec5n bi\u1ebfn m\u1ed9t s\u1ed1 ch\u1ec9 ti\u00eau v\u1eadt l\u00fd, h\u00f3a h\u1ecdc c\u1ee7a \u0111\u1ea5t t\u1ea1i m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba thu\u1ed9c d\u1ef1 \u00e1n RENFODA \u1edf khu v\u1ef1c ph\u00f2ng h\u1ed9 S\u00f4ng \u0110\u00e0, t\u1ec9nh H\u00f2a B\u00ecnh<\/td>\nEvaluation of the physical and chemical indicators of soil in the native tree plantation model under the RENFODA project in the watershed area of the Da River, Hoa Binh province<\/td>\nH\u00e0 Th\u1ecb Hi\u1ec1n
\nH\u00e0 Th\u1ecb Thanh Mai
\nV\u0169 Qu\u00fd \u0110\u00f4ng<\/td>\n		104<\/td>\n<\/tr>\n
13.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a tu\u1ed5i \u0111\u1ebfn s\u1ef1 bi\u1ebfn \u0111\u1ed9ng k\u00edch th\u01b0\u1edbc qu\u1ea3n b\u00e0o g\u1ed7 Th\u00f4ng m\u00e3 v\u0129 (Pinus massoniana<\/em> Lamb.) tr\u1ed3ng t\u1ea1i Cao B\u1eb1ng, Vi\u1ec7t Nam<\/td>\nEffect of age on variation in tracheid dimensions of Pinus massoniana<\/em> Lamb. planted in Cao Bang, Vietnam<\/td>\nD\u01b0\u01a1ng V\u0103n \u0110o\u00e0n
\nNguy\u1ec5n Vi\u1ec7t H\u01b0ng
\nHo\u00e0ng V\u0103n V\u0169
\nLa \u0110\u1ee9c To\u00e0n
\nNguy\u1ec5n T\u1eed Kim<\/td>\n		116<\/td>\n<\/tr>\n
14.<\/td>\nS\u1eed d\u1ee5ng \u1ea3nh vi\u1ec5n th\u00e1m \u0111\u1ec3 \u01b0\u1edbc t\u00ednh sinh kh\u1ed1i r\u1eebng
\ntr\u00ean m\u1eb7t \u0111\u1ea5t: th\u00e1ch th\u1ee9c v\u00e0
\ntri\u1ec3n v\u1ecdng<\/td>\n		Using remote sensing images for estimating aboveground forest biomass: challsenges and prospects<\/td>\nH\u1ed3 \u0110\u00ecnh B\u1ea3o
\nNguy\u1ec5n Th\u1ecb Thanh H\u01b0\u01a1ng<\/td>\n		125<\/td>\n<\/tr>\n
15.<\/td>\nB\u1eaby \u0111\u00e8n \u0111a t\u00ednh n\u0103ng ph\u00f2ng tr\u1eeb c\u00f4n tr\u00f9ng g\u00e2y h\u1ea1i c\u00e2y tr\u1ed3ng n\u00f4ng l\u00e2m nghi\u1ec7p<\/td>\nMulti-function light trap
\nin preventing insect pests associated with agricultural crops and forest trees<\/td>\n		L\u00ea Xu\u00e2n Ph\u00fac
\n\u0110\u00e0o Ng\u1ecdc Quang
\nCao Ch\u00ed C\u00f4ng<\/td>\n		148<\/td>\n<\/tr>\n
16.<\/td>\nC\u01a1 s\u1edf l\u00fd lu\u1eadn v\u00e0 th\u1ef1c ti\u1ec5n v\u1ec1 b\u1ea3o hi\u1ec3m r\u1eebng – nh\u1eefng \u0111\u1ecbnh h\u01b0\u1edbng v\u1ec1 ch\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m r\u1eebng \u1edf Vi\u1ec7t Nam<\/td>\nTheoretical and practical
\nbasis of forest insurance – orientations for forest insurance policy in Vietnam<\/td>\n		Ph\u1ea1m Th\u1ecb Luy\u1ec7n
\nNguy\u1ec5n Ti\u1ebfn H\u1ea3i<\/td>\n		163<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

<\/a>
\n<\/a>BI\u1ebeN D\u1eca DI TRUY\u1ec0N V\u1ec0 SINH TR\u01af\u1edeNG, \u0110\u1ed8 TH\u1eb2NG TH\u00c2N V\u00c0 C\u00c0NH NH\u1ece C\u1ee6A LO\u00c0I KEO L\u00c1 TR\u00c0M (Acacia auriculiformis<\/em>)
\nTRONG KH\u1ea2O NGHI\u1ec6M H\u1eacU TH\u1ebe T\u1ea0I \u0110\u1ed2NG PH\u00da, B\u00ccNH PH\u01af\u1edaC<\/p>\n

<\/a>Nguy\u1ec5n V\u0103n \u0110\u0103ng1<\/sup>, V\u0169 \u0110\u00ecnh H\u01b0\u1edfng1<\/sup>, Ki\u1ec1u M\u1ea1nh H\u00e01<\/sup>,
\nH\u1ed3 T\u1ed1 Vi\u1ec7t1<\/sup>, Nguy\u1ec5n Xu\u00e2n H\u1ea3i1<\/sup>, \u0110\u1ed7 H\u1eefu S\u01a1n2<\/sup>, D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n2<\/sup><\/p>\n

1<\/sup> Trung t\u00e2m \u1ee8ng d\u1ee5ng Khoa h\u1ecdc K\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p Nam B\u1ed9
\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

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

Keo l\u00e1 tr\u00e0m l\u00e0 lo\u00e0i c\u00e2y tr\u1ed3ng l\u00e2m nghi\u1ec7p ch\u00ednh t\u1ea1i Vi\u1ec7t Nam v\u00e0 ph\u00f9 h\u1ee3p cho tr\u1ed3ng r\u1eebng g\u1ed7 x\u1ebb. M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c gia \u0111\u00ecnh Keo l\u00e1 tr\u00e0m 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 x\u1ebb. Kh\u1ea3o nghi\u1ec7m g\u1ed3m 79 gia \u0111\u00ecnh Keo l\u00e1 tr\u00e0m v\u00e0 1 d\u00f2ng v\u00f4 t\u00ednh AA1, tr\u1ed3ng n\u0103m 2019 t\u1ea1i \u0110\u1ed3ng Ph\u00fa – B\u00ecnh Ph\u01b0\u1edbc. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y khi r\u1eebng 4 tu\u1ed5i, c\u00e1c gia \u0111\u00ecnh c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng (\u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u cao), th\u1ec3 t\u00edch th\u00e2n c\u00e2y v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y. Trong \u0111\u00f3, 5 gia \u0111\u00ecnh 29; 4; 5; 49 v\u00e0 57 c\u00f3 n\u0103ng su\u1ea5t trung b\u00ecnh \u0111\u1ea1t t\u1eeb 20,4 – 23,5 m3<\/sup>\/ha\/n\u0103m v\u00e0 v\u01b0\u1ee3t tr\u1ed9i t\u1eeb 28,2 – 47,8% so v\u1edbi n\u0103ng su\u1ea5t trung b\u00ecnh c\u1ee7a kh\u1ea3o nghi\u1ec7m. Ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng t\u1ed5ng h\u1ee3p c\u1ee7a 5 gia \u0111\u00ecnh n\u00e0y trung b\u00ecnh \u0111\u1ea1t 3,7 \u0111i\u1ec3m cao h\u01a1n so v\u1edbi s\u1ed1 \u0111i\u1ec3m trung b\u00ecnh c\u1ee7a to\u00e0n kh\u1ea3o nghi\u1ec7m 3,6 \u0111i\u1ec3m. Ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng c\u00f3 h\u1ec7 s\u1ed1 di truy\u1ec1n t\u1ea1i tu\u1ed5i 4 \u1edf m\u1ee9c trung b\u00ecnh v\u1edbi D1,<\/sub>3<\/sub> c\u00f3 h2 <\/sup>= 0,42; Hvn<\/sub> c\u00f3 h2<\/sup> = 0,38 v\u1edbi h\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed9ng l\u1ea7n l\u01b0\u1ee3t l\u00e0 CVA<\/sub> = 13,83% c\u1ee7a D1,<\/sub>3 <\/sub>v\u00e0 CVA<\/sub> = 11,06% c\u1ee7a Hvn<\/sub> \u0111\u1ec1u cao h\u01a1n so v\u1edbi ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y Dtt c\u00f3 h2<\/sup> = 0,09 v\u00e0 Dnc c\u00f3 h2<\/sup> = 0,01 v\u1edbi h\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed9ng l\u1ea7n l\u01b0\u1ee3t CVA<\/sub> = 5,05% c\u1ee7a Dtt v\u00e0 CVA<\/sub> = 0,01% c\u1ee7a Dnc. T\u0103ng thu di truy\u1ec1n l\u00fd thuy\u1ebft t\u0103ng l\u00ean 18,52% v\u1ec1 D1,<\/sub>3<\/sub> v\u00e0 14,11% v\u1ec1 Hvn<\/sub> khi t\u1ef7 l\u1ec7 ch\u1ecdn l\u1ecdc l\u00e0 5% c\u00e1 th\u1ec3 t\u1ed1t nh\u1ea5t trong v\u01b0\u1eddn gi\u1ed1ng t\u1ea1i tu\u1ed5i 4. T\u1eeb k\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng v\u1ec1 D1,<\/sub>3<\/sub>, Hvn<\/sub>, Dtt v\u00e0 Dnc th\u00ec 5 gia \u0111\u00ecnh tr\u00ean c\u00f3 tri\u1ec3n v\u1ecdng cho c\u00e1c nghi\u00ean c\u1ee9u ch\u1ecdn l\u1ecdc gi\u1ed1ng ti\u1ebfp theo.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y, h\u1ec7 s\u1ed1 di truy\u1ec1n, Keo l\u00e1 tr\u00e0m, sinh tr\u01b0\u1edfng, t\u0103ng thu di truy\u1ec1n.<\/p>\n

<\/a>GENETIC VARIATION, STEM STRAIGHTNESS AND BRACH THICKNESS
\nOF Acacia auriculiformis <\/em>IN PROGENY TRIAL IN DONG PHU, BINH PHUOC<\/p>\n

Nguyen Van Dang1<\/sup>, Vu Dinh Huong1<\/sup>, Kieu Manh Ha1<\/sup>, Ho To Viet1<\/sup>,
\nNguyen Xuan Hai1<\/sup>, Do Huu Son2<\/sup>, Duong Hong Quan2<\/sup>
\n<\/sup>1<\/sup><\/em> Southern Center of Application for Forest Technology & Science<\/em>
\n<\/sup><\/em>2<\/sup><\/em> Institute of Forest Tree Improvement and Biotechnology<\/em><\/p>\n

SUMMARY<\/p>\n

Acacia auriculiformis<\/em> species are widely planted for commercial plantations and have potential for saw-log production in Vietnam. The aim of the study was to select Acacia auriculiformis<\/em> varieties with fast gr owth and good stem quality for saw-log plantations in the Southern region. The experiment was tested 79 selected families Acacia auricuiformis<\/em> and 01 clonal (AA1). The results showed that there were significant differences in growth parameters (diameter and height) at aged four years, average stem volume, stem quality. Based on the results, the five slected families were 29; 4; 5; 49 v\u00e0 57, with yields ranging from 20.4 to 23.5 m3<\/sup>\/ha\/year and 68.2% to 47.8% higher than the trial\u2019s average. The quality sum index five families as 3,7 points were higher the trial\u2019s average 3.6 points. The growths traits displayed moderately heritability h2<\/sup> = 0.42 of D1.<\/sub>3<\/sub> and h2<\/sup> = 0.38 of Hvn<\/sub> and coefficent of additive genetic variation CVA<\/sub> = 13.83 of D1.<\/sub>3<\/sub> and CVA<\/sub> = 11.06% of Hvn<\/sub> higher compared to stem quality h2<\/sup> = 0.09 of Dtt v\u00e0 h2<\/sup> = 0.01 of Dnc; with CVA<\/sub> = 5.05% of Dtt and CVA<\/sub> = 0.01% of Dnc. Predicted genetic gain of 18.52% about D1.<\/sub>3<\/sub> and 14.11% of Hvn<\/sub> if 5% best trees had been selected in the progeny trial at 4 age. The evaluation result about growths, D1.<\/sub>3<\/sub>, Hvn<\/sub>, Dtt and Dnc are 5 families has promising select for subsequent breed selection studies.<\/p>\n

Keywords:<\/em><\/strong> Acacia auriculiformis, <\/em>genetic gain, growth, heritability, stem quality.<\/p>\n

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

<\/a>\u0110\u00c1NH GI\u00c1 M\u1ed0I QUAN H\u1ec6
\nDI TRUY\u1ec0N C\u00c2Y TH\u1ea2O QU\u1ea2 (Amomum aromaticum<\/em> Roxb.)
\nT\u1ea0I M\u1ed8T S\u1ed0 QU\u1ea6N TH\u1ec2 THU\u1ed8C C\u00c1C T\u1ec8NH MI\u1ec0N N\u00daI PH\u00cdA B\u1eaeC<\/p>\n

<\/a>Phan V\u0103n Th\u1eafng1<\/sup>, Nguy\u1ec5n Th\u1ecb Hi\u1ec1n1<\/sup>, Ph\u00f9ng Nhu\u1ec7 Giang1<\/sup>, V\u00f5 \u0110\u1ea1i H\u1ea3i2<\/sup>, Tr\u1ea7n H\u1ed3 Quang3<\/sup><\/p>\n

1<\/sup>Trung t\u00e2m Nghi\u00ean c\u1ee9u L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n<\/sup>2<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n<\/sup>3<\/sup>Vi\u1ec7n C\u00f4ng ngh\u1ec7 sinh h\u1ecdc – Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam<\/p>\n

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

Th\u1ea3o qu\u1ea3 (Amomum aromaticum<\/em> Roxb.) l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 c\u00f3 gi\u00e1 tr\u1ecb, s\u1ea3n ph\u1ea9m thu ho\u1ea1ch ch\u00ednh l\u00e0 qu\u1ea3 v\u00e0 tinh d\u1ea7u t\u1eeb qu\u1ea3. Th\u1ea3o qu\u1ea3 \u0111\u01b0\u1ee3c coi l\u00e0 c\u00e2y x\u00f3a \u0111\u00f3i gi\u1ea3m ngh\u00e8o c\u1ee7a \u0111\u1ed3ng b\u00e0o d\u00e2n t\u1ed9c thi\u1ec3u s\u1ed1 \u1edf v\u00f9ng cao c\u1ee7a c\u00e1c t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc Vi\u1ec7t Nam, n\u00ean Th\u1ea3o qu\u1ea3 l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y tr\u1ed3ng \u0111ang r\u1ea5t \u0111\u01b0\u1ee3c quan t\u00e2m \u1edf nhi\u1ec1u \u0111\u1ecba ph\u01b0\u01a1ng. Tuy nhi\u00ean, g\u1ea7n \u0111\u00e2y, do t\u00e1c \u0111\u1ed9ng c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu, n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng qu\u1ea3 ng\u00e0y c\u00e0ng suy gi\u1ea3m, v\u00ec ch\u01b0a c\u00f3 gi\u1ed1ng t\u1ed1t \u0111\u1ec3 ph\u1ee5c s\u1ea3n xu\u1ea5t, n\u00ean vi\u1ec7c nghi\u00ean c\u1ee9u \u0111a d\u1ea1ng di truy\u1ec1n c\u00e2y Th\u1ea3o qu\u1ea3 l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc quan tr\u1ecdng ph\u1ee5c v\u1ee5 cho c\u00f4ng t\u00e1c nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o gi\u1ed1ng v\u00e0 ba\u0309o t\u00f4\u0300n ngu\u00f4\u0300n gen Th\u1ea3o qu\u1ea3 l\u00e0 c\u1ea7n thi\u1ebft. Nghi\u00ean c\u1ee9u ti\u1ebfn h\u00e0nh kh\u1ea3o s\u00e1t v\u00e0 thu 36 m\u1eabu \u1edf 6 qu\u00e2\u0300n th\u00ea\u0309 ta\u0323i ca\u0301c ti\u0309nh Vi\u1eb9\u0302t Nam bao g\u1ed3m: M\u00f9 Cang Ch\u1ea3i – Y\u00ean B\u00e1i; V\u0103n B\u00e0n, Sa Pa – L\u00e0o Cai; M\u01b0\u1eddng T\u00e8, Tam \u0110\u01b0\u1eddng, T\u00e2n Uy\u00ean – Lai Ch\u00e2u. \u1ee8ng d\u1ee5ng k\u1ef9 thu\u1eadt ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed \u0111\u1ec3 \u0111a\u0301nh gia\u0301 \u0111a da\u0323ng di truy\u00ea\u0300n Th\u1ea3o qu\u1ea3 t\u1ea1i 6 qu\u1ea7n th\u1ec3, k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u00e1ch chi\u1ebft th\u00e0nh c\u00f4ng t\u00e1ch chi\u1ebft ADN t\u1ed5ng s\u1ed1 m\u1ed9t s\u1ed1 m\u1eabu nghi\u00ean c\u1ee9u \u0111\u1ea1i di\u1ec7n tr\u00ean gel Agarose 1%, t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 5 c\u1eb7p m\u1ed3i SSR c\u00f3 m\u1ee9c \u0111\u1ed9 \u0111a h\u00ecnh cao \u0111\u1ec3 ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n lo\u00e0i Th\u1ea3o qu\u1ea3. \u0110\u1ed3ng th\u1eddi \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a c\u00e1c gi\u1ed1ng Th\u1ea3o qu\u1ea3 nghi\u00ean c\u1ee9u trong kho\u1ea3ng t\u1eeb 46 – 100%. Do h\u1ea7u h\u1ebft c\u00e1c c\u00e1 th\u1ec3 Th\u1ea3o qu\u1ea3 nghi\u00ean c\u1ee9u c\u00f3 m\u1ed1i quan h\u1ec7 t\u01b0\u01a1ng \u0111\u1ed1i th\u00e2n thi\u1ebft n\u00ean kh\u1ea3 n\u0103ng \u0111\u1ec3 t\u1ea1o \u01b0u th\u1ebf lai gi\u1eefa c\u00e1c c\u00e1 th\u1ec3 n\u00e0y l\u00e0 r\u1ea5t kh\u00f3. V\u00ec v\u1eady, \u0111\u1ec3 c\u1ea3i thi\u1ec7n gi\u1ed1ng c\u00e2y Th\u1ea3o qu\u1ea3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 trong t\u01b0\u01a1ng lai, c\u1ea7n c\u00f3 ph\u01b0\u01a1ng \u00e1n thu th\u1eadp, \u0111\u00e1nh gi\u00e1, l\u01b0u gi\u1eef, b\u1ea3o t\u1ed3n v\u00e0 qu\u1ea3n l\u00fd ngu\u1ed3n gen c\u00e2y Th\u1ea3o qu\u1ea3 m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd, h\u1ec7 th\u1ed1ng, khoa h\u1ecdc.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110a d\u1ea1ng di truy\u1ec1n, l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7, SSR, Th\u1ea3o qu\u1ea3.<\/p>\n

<\/a>Evaluation of the genetic relations of Amomum aromaticum<\/em> Roxb. trees collected at populations in provinces of Northern mountain area<\/p>\n

Phan Van Thang1<\/sup>, Nguyen Thi Hien1<\/sup>, Phung Nhue Giang1<\/sup>, Vo Dai Hai2<\/sup>, Tran Ho Quang3<\/sup><\/p>\n

1<\/sup>Non-Timber Forest Products Research Centre
\n<\/sup>2<\/sup>Vietnamese Academy of Forest Sciences
\n<\/sup>3<\/sup>Institute of Biotechnology – Vietnam Academy of Science and Technology<\/p>\n

SUMMARY<\/p>\n

Cardamom (Amomum aromaticum<\/em> Roxb.) is one of the valuable non timber forest products, the main products are fruits and essential oils from the fruit. Cardamom is considered as a poverty alleviation plant of ethnic minorities in the highlands of the mountainous provinces of Vietnam. Cardamom is one of the plants that are very interested in many provinces. However, recently, due to the impact of climate change, the yield and quality of fruit are increasingly declining. Because there is no good cultivar to restore production. So the study of genetic diversity of Cardamom as a basis important science for research, breeding and conservation of Cardamom genetic resources is necessary. The study conducted a survey and collected 36 samples in 6 typical populations in Vietnam’s provinces, including: Mu Cang Chai – Yen Bai; Van Ban, Sa Pa – Lao Cai; Muong Te, Tam Duong, Tan Uyen – Lai Chau. Applying modern genetic diversity analysis technology at the Institute of Biotechnology, the research results have successfully isolated and extracted the total DNA of a number of representative research samples on 1% agarose gel, thereby determining 5 pairs of SSR primers capable of analyzing genetic diversity of Cardamom species. At the same time, the genetic diversity of the studied varieties of Cardamom was determined in the range of 46 – 100%. Since most of the Cardamom individuals studied have a relatively close relationship, the ability to create a hybrid advantage between these individuals is very difficult. Therefore, in order to effectively improve the cardamom variety in the future, it is necessary to have a plan to collect, evaluate, store, preserve and manage the cardamomium gene resources in a rational, systematic and scientific manner.<\/p>\n

Keywords: <\/em><\/strong>Amomum aromaticum <\/em>Robx.,<\/em> Cardamom, genetic diversity, non timber forest products, SSR.<\/p>\n

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

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


\n<\/em>
\n<\/strong><\/p>\n

<\/a>SINH TR\u01af\u1edeNG V\u00c0 CH\u1ea4T L\u01af\u1ee2NG TH\u00c2N C\u00c2Y
\nC\u1ee6A C\u00c1C GI\u1ed0NG KEO LAI (Acacia mangium <\/em>\u00d7 Acacia auriculiformis<\/em>) TRONG KH\u1ea2O NGHI\u1ec6M M\u1ede R\u1ed8NG T\u1ea0I \u0110\u1ecaNH QU\u00c1N, \u0110\u1ed2NG NAI<\/p>\n

<\/a>D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n, Ng\u00f4 V\u0103n Ch\u00ednh, \u0110\u1ed7 Thanh T\u00f9ng, Qu\u00e1ch M\u1ea1nh T\u00f9ng, Phan \u0110\u1ee9c Ch\u1ec9nh<\/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

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c d\u00f2ng keo lai c\u00f3 sinh tr\u01b0\u1edfng nhanh v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ed1t ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng t\u1ea1i khu v\u1ef1c \u0110\u1ecbnh Qu\u00e1n, \u0110\u1ed3ng Nai n\u00f3i ri\u00eang v\u00e0 v\u00f9ng \u0110\u00f4ng Nam B\u1ed9 n\u00f3i chung. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean kh\u1ea3o nghi\u1ec7m m\u1edf r\u1ed9ng t\u1ea1i \u0110\u1ecbnh Qu\u00e1n, \u0110\u1ed3ng Nai g\u1ed3m 7 gi\u1ed1ng keo lai (BV586, BV376, BB055, BV584, BV523, BV434, BV350) \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn, 2 gi\u1ed1ng keo lai c\u00f3 tri\u1ec3n v\u1ecdng l\u00e0 BV355, BB028 v\u00e0 gi\u1ed1ng qu\u1ed1c gia AH1 l\u00e0m \u0111\u1ed1i ch\u1ee9ng. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u1edf giai \u0111o\u1ea1n 36 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 c\u0169ng nh\u01b0 c\u00e1c ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y nh\u01b0ng ch\u01b0a c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 t\u1ef7 l\u1ec7 s\u1ed1ng gi\u1eefa c\u00e1c d\u00f2ng v\u00f4 t\u00ednh trong kh\u1ea3o nghi\u1ec7m. D\u1ef1a v\u00e0o k\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng, t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y \u0111\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c 4 d\u00f2ng BV523, BB028, BV376, BV434 v\u1edbi n\u0103ng su\u1ea5t \u0111\u1ea1t t\u1eeb 20,97 – 22,7 m3<\/sup>\/ha\/n\u0103m, t\u1ef7 l\u1ec7 s\u1ed1ng cao t\u1eeb 74,50 – 83,70% v\u00e0 ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng t\u1ed5ng h\u1ee3p \u0111\u1ea1t t\u1eeb 4,16 – 4,44 \u0111i\u1ec3m, l\u00e0 c\u00e1c gi\u1ed1ng c\u00f3 tri\u1ec3n v\u1ecdng \u00e1p d\u1ee5ng cho v\u00f9ng \u0110\u1ecbnh Qu\u00e1n, \u0110\u1ed3ng Nai v\u00e0 nh\u1eefng n\u01a1i c\u00f3 \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba t\u01b0\u01a1ng t\u1ef1.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>: Ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y, keo lai, kh\u1ea3o nghi\u1ec7m m\u1edf r\u1ed9ng, sinh tr\u01b0\u1edfng.<\/p>\n

<\/a>Growth and stem quality character
\nof accia hybrid (Acacia mangium \u00d7 Acacia auriculiformis<\/em>) clones
\nin extended trial at Dinh Quan, Dong Nai<\/p>\n

Duong Hong Quan, Ngo Van Chinh, Do Thanh Tung, Quach Manh Tung, Phan Duc Chinh<\/p>\n

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

Summary<\/p>\n

The objective of the research is to select acacia hybrid clones with fast growth and good stem quality character for afforestation in Dinh Quan, Dong Nai areas in particular and the Southeast region in general. The study was conducted in an extensive trial at Dinh Quan district, Dong Nai provine, including 7 acacia hybrid (BV586, BV376, BB055, BV584, BV523, BV434, BV350) that were recognized, 2 promising acacia hybrid varieties were BV355, BB028 and national variety AH1 as control. Evaluation results at 36 months of age showed that there were significant differences in growth indicators as well as stem quality characters, but there was no significant differences survival percentage between clones in the trial. Based on the results of growth assessment, survival rate and stem quality, four clones namely BV523, BB028, BV376 and BV434 were selected with the mean annual increment ranged from 20.97 to 22.75 m3<\/sup>\/ha\/year, high survival rate from 74.50 to 83.70 % and the overall quality index ranged from 4.16 to 4.44 points, which were as promising clones for Dinh Quan district, Dong Nai province and similar site conditions.<\/p>\n

Key words<\/em><\/strong>: Stem quality character, acacia hybrid, extended trials, growth.<\/p>\n

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


\n<\/em><\/strong>
\n<\/strong><\/p>\n

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

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

<\/a>NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG B\u1eb0NG PH\u01af\u01a0NG PH\u00c1P NU\u00d4I C\u1ea4Y M\u00d4 C\u00c1C D\u00d2NG KEO TAM B\u1ed8I X201 V\u00c0 X205<\/p>\n

<\/a>L\u00ea S\u01a1n1<\/sup>, Mai Th\u1ecb Ph\u01b0\u01a1ng Th\u00fay1<\/sup>, Tr\u01b0\u01a1ng Th\u1ecb Th\u00f9y Linh2<\/sup>,
\nNguy\u1ec5n Th\u1ecb Kim Thanh2<\/sup>, L\u01b0u Th\u1ecb Qu\u1ef3nh1<\/sup>, Nguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc3<\/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
\n2 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Khoa h\u1ecdc T\u1ef1 nhi\u00ean – \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i
\n3<\/sup> Khoa N\u00f4ng L\u00e2m, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc T\u00e2y B\u1eafc<\/p>\n

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

Trong th\u1eddi gian g\u1ea7n \u0111\u00e2y, nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o gi\u1ed1ng \u0111a b\u1ed9i \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh cho c\u00e1c lo\u00e0i keo nhi\u1ec7t \u0111\u1edbi, qua \u0111\u00f3 m\u1ed9t s\u1ed1 gi\u1ed1ng keo lai tam b\u1ed9i c\u00f3 sinh tr\u01b0\u1edfng nhanh, c\u00f3 chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7 th\u00edch h\u1ee3p cho tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc v\u00e0 c\u00f4ng nh\u1eadn l\u00e0 gi\u1ed1ng c\u00e2y l\u00e2m nghi\u1ec7p m\u1edbi nh\u01b0 c\u00e1c d\u00f2ng X201 v\u00e0 X205. Vi\u1ec7c nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng b\u1eb1ng nu\u00f4i c\u1ea5y m\u00f4 cho c\u00e1c gi\u1ed1ng m\u1edbi ch\u1ecdn t\u1ea1o n\u00e0y s\u1ebd g\u00f3p ph\u1ea7n \u0111\u01b0a nhanh c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u00e0o s\u1ea3n xu\u1ea5t. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, ph\u01b0\u01a1ng ph\u00e1p kh\u1eed tr\u00f9ng m\u1eabu th\u00edch h\u1ee3p cho c\u00e1c d\u00f2ng keo lai tam b\u1ed9i X201 v\u00e0 X205 l\u00e0 s\u1eed d\u1ee5ng HgCl2<\/sub> n\u1ed3ng \u0111\u1ed9 0,1% trong 10 ph\u00fat v\u1edbi t\u1ef7 l\u1ec7 b\u1eadt ch\u1ed3i h\u1eefu hi\u1ec7u \u0111\u1ea1t 58,5% \u0111\u1ebfn 65,4%. M\u00f4i tr\u01b0\u1eddng nh\u00e2n ch\u1ed3i th\u00edch h\u1ee3p cho c\u00e1c d\u00f2ng keo lai tam b\u1ed9i X201 v\u00e0 X205 nghi\u00ean c\u1ee9u l\u00e0 m\u00f4i tr\u01b0\u1eddng MS* c\u00f3 b\u1ed5 sung BAP n\u1ed3ng \u0111\u1ed9 1,5 mg\/l cho h\u1ec7 s\u1ed1 nh\u00e2n ch\u1ed3i \u0111\u1ea1t 2,6 v\u00e0 2,9 l\u1ea7n t\u01b0\u01a1ng \u1ee9ng. \u0110\u1ec3 k\u00edch th\u00edch t\u1ea1o r\u1ec5, s\u1eed d\u1ee5ng m\u00f4i tr\u01b0\u1eddng 1\/2MS* + IBA n\u1ed3ng \u0111\u1ed9 2,0mg\/l l\u00e0 th\u00edch h\u1ee3p nh\u1ea5t v\u1edbi t\u1ef7 l\u1ec7 ra r\u1ec5 \u0111\u1ea1t tr\u00ean 97% cho c\u1ea3 2 d\u00f2ng keo lai tam b\u1ed9i nghi\u00ean c\u1ee9u.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Keo lai tam b\u1ed9i, nu\u00f4i c\u1ea5y m\u00f4, X201, X205.<\/p>\n

<\/a>Study on the propagation of triploid acacia hybrid clones X201
\nand X205 by tissue culture<\/p>\n

Le Son1<\/sup>, Mai Thi Phuong Thuy1<\/sup>, Truong Thi Thuy Linh2<\/sup>,
\nNguyen Thi Kim Thanh2<\/sup>, L\u01b0u Thi Quynh1<\/sup>, Nguyen Thi Bich Ngoc3<\/sup><\/p>\n

1<\/sup> Institute of Forest Tree Improvement and Biotechnology
\n2<\/sup>Hanoi University of Science – Vietnam National University – Hanoi
\n3<\/sup> Faculty of Agriculture and Forestry – Tay Bac University<\/p>\n

SUMMARY<\/p>\n

In the last decade, breeding on polyploidy has been conducted for tropical acacias. Some new triploid acacia hybrid clones with fast-growing and longer fibre lengths were selected and recognized as new forest cultivars. The study on vegetative propagation by tissue culture, therefore is required for better deployment. The results showed that using HgCl2<\/sub> 0.1% to sterile shoots in 10 mins has the highest adventitious shoot rates (58.5 – 65.4%). The modified Murashige and Skoog media (MS*) with phytohormones were evaluated for their suitability to support shoot induction, shoot multiplication and root formation. The highest percentage of multiple shoot induction was achieved on MS + BAP (1.5 mg\/l). Elongated shoots showed the best rooting response on 1\/2 MS* + IBA (2.0 mg\/l) with rooted shoot rates reached up to 97%.<\/p>\n

Keywords:<\/em> <\/strong>Tissue culture, triploid acacia hybrid, X201, X205.<\/p>\n

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

NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG M\u1ed8T S\u1ed0 D\u00d2NG B\u1ea0CH \u0110\u00c0N LAI (Eucalyptus urophylla x Eucalyptus <\/em>grandis)<\/em> UG105, UG111, UG117 B\u1eb0NG K\u1ef8 THU\u1eacT NU\u00d4I C\u1ea4Y in vitro<\/em><\/p>\n

L\u00ea Th\u1ecb Hoa, Mai Th\u1ecb Ph\u01b0\u01a1ng Th\u00fay, \u0110\u1ed7 H\u1eefu S\u01a1n, V\u0103n Thu Huy\u1ec1n,
\nHo\u00e0ng Th\u1ecb H\u1ed3ng H\u1ea1nh, Ng\u00f4 Thu H\u1ea3o, Nguy\u1ec5n Th\u1ecb H\u1ed3ng<\/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

Nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng c\u00e1c d\u00f2ng b\u1ea1ch \u0111\u00e0n lai m\u1edbi (Eucalyptus urophylla x Eucalyptus <\/em>grandis)<\/em> UG105, UG111, UG117 b\u1eb1ng k\u1ef9 thu\u1eadt nu\u00f4i c\u1ea5y in vitro<\/em> gi\u00fap \u0111\u01b0a nhanh c\u00e1c gi\u1ed1ng m\u1edbi \u0111\u01b0\u1ee3c ch\u1ecdn t\u1ea1o v\u00e0o s\u1ea3n xu\u1ea5t. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u giai \u0111o\u1ea1n kh\u1eed tr\u00f9ng t\u1ea1o m\u1eabu s\u1ea1ch in vitro<\/em> v\u00e0 nh\u00e2n nhanh ch\u1ed3i c\u1ee7a ba d\u00f2ng b\u1ea1ch \u0111\u00e0n lai cho th\u1ea5y: kh\u1eed tr\u00f9ng m\u1eabu b\u1eb1ng dung d\u1ecbch HgCl2<\/sub> 0,05% trong th\u1eddi gian 6 ph\u00fat cho t\u1ef7 l\u1ec7 m\u1eabu s\u1ea1ch n\u1ea3y ch\u1ed3i h\u1eefu hi\u1ec7u cao nh\u1ea5t: UG105 \u0111\u1ea1t 56,9%; UG111 \u0111\u1ea1t 55,4% v\u00e0 UG117 \u0111\u1ea1t 54,9%; trong khi \u0111\u00f3 kh\u1eed tr\u00f9ng m\u1eabu b\u1eb1ng Javen 2,5% trong 12 ph\u00fat thu \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 c\u00f3 t\u1ef7 l\u1ec7 m\u1eabu n\u1ea3y ch\u1ed3i h\u1eefu hi\u1ec7u cao nh\u1ea5t cho ba d\u00f2ng b\u1ea1ch \u0111\u00e0n lai t\u01b0\u01a1ng \u1ee9ng 44,0%; 45,1% v\u00e0 45,3%. H\u1ec7 s\u1ed1 nh\u00e2n ch\u1ed3i (HSNC) cao nh\u1ea5t \u0111\u1ea1t \u0111\u01b0\u1ee3c trong m\u00f4i tr\u01b0\u1eddng MS* + 1 mg\/l BAP + 0,5 mg\/l NAA+ 0,1 mg\/l GA3 (d\u00f2ng UG105 c\u00f3 HSNC l\u00e0 2,72 l\u1ea7n v\u00e0 chi\u1ec1u cao ch\u1ed3i \u0111\u1ea1t 2,96 cm; d\u00f2ng UG111 c\u00f3 HSNC l\u00e0 2,90 l\u1ea7n v\u00e0 chi\u1ec1u cao ch\u1ed3i \u0111\u1ea1t 2,85 cm; d\u00f2ng UG117 c\u00f3 HSNC \u0111\u1ea1t 2,92 l\u1ea7n v\u00e0 chi\u1ec1u cao ch\u1ed3i l\u00e0 2,89 cm). M\u00f4i tr\u01b0\u1eddng ra r\u1ec5 th\u00edch h\u1ee3p cho c\u00e1c d\u00f2ng b\u1ea1ch \u0111\u00e0n lai UG105, UG111, UG117 l\u00e0 1\/2 MS* <\/sup>+ 1,5 mg\/l IBA + 0,5 mg\/l ABT cho t\u1ef7 l\u1ec7 ch\u1ed3i ra r\u1ec5, s\u1ed1 r\u1ec5 trung b\u00ecnh\/ch\u1ed3i cao nh\u1ea5t \u0111\u1ea1t 86,67% v\u00e0 3,46 r\u1ec5\/ch\u1ed3i (UG105); 82,22% v\u00e0 3,42 r\u1ec5\/ch\u1ed3i (UG111); 83,33% v\u00e0 3,39 r\u1ec5\/ch\u1ed3i (UG117). Th\u1eddi gian hu\u1ea5n luy\u1ec7n c\u00e2y m\u1ea7m cho hi\u1ec7u qu\u1ea3 t\u1ed1t nh\u1ea5t tr\u01b0\u1edbc khi cho ra v\u01b0\u1eddn \u01b0\u01a1m l\u00e0 15 ng\u00e0y cho t\u1ef7 l\u1ec7 c\u00e2y s\u1ed1ng \u0111\u1ea1t 88,89% (UG105); 88,89% (UG111); 86,67% (UG117) v\u00e0 chi\u1ec1u cao t\u01b0\u01a1ng \u1ee9ng l\u00e0 5,16 cm; 5,35 cm v\u00e0 5,29 cm.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea1ch \u0111\u00e0n lai, kh\u1eed tr\u00f9ng, nh\u00e2n ch\u1ed3i, nu\u00f4i c\u1ea5y in <\/em>vitro, <\/em>ra r\u1ec5.<\/p>\n

In vitro<\/em> propagation of new Eucalyptus hybrid clones
\n(Eucalyptus urophylla <\/em>\u00b4 Eucalyptus <\/em>grandis<\/em>) UG105, UG111 and UG117<\/p>\n

Summary<\/p>\n

Study on propagating of new eucalyptus hybrid clones (Eucalyptus urophylla<\/em> \u00b4<\/em> \u00a0Eucalyptus <\/em>grandis<\/em>) UG105, UG111 and UG117 by tissue culture method was investigated. The results contributed to the process of selecting and creating new Eucalyptus hybrids. The sterilization of samples with 0.05% HgCl2<\/sub> in 6 minutes provided the highest effective rate of shoots for studied eucalyptus lines. The effective budding rate of UG105, UG111 and UG117 were 56.9%; 55.4% and 54.9%, respectively; while sterilization with 2.5% Javel in 12 minutes archieved 44.0%; 45.1% and 45.3%, respectively. Effective shoots were regenerated in modified Murashige and Skoog medium (MS*) supplemented in MS* + 1 mg\/l BAP + 0.5 mg\/l NAA+ 0.1 m g\/l GA3. Shoot multiplication rate and average shoot length were 2,72 times and 2.96 cm for UG105; 2.90 times and 2.85 cm for UG111; and 2.92 times and 2.89 cm for UG117. The suitable rooting medium for studied clones was 1\/2 MS* + 1.5 mg\/l IBA + 0.5 mg\/l ABT to get the rooting rate of 86.67%; 82.22%; 83.33% respectively and the number of roots\/buds were 3.46; 3.42; 3.39 respectively. The acclimatization time for best results was 15 days with the survival rate of 86.89% for UG105; 88.89% for UG111; and 88.67% for UG117, the height reached 5.16 cm; 5.35 cm and 5.29 cm respectively.<\/p>\n

Keywords:<\/em><\/strong> Eucalyptus hybrid, shooting, sterilization, in vitro<\/em> propagation, rooting.<\/p>\n

 <\/p>\n

 <\/p>\n

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

 <\/p>\n

<\/a>NGHI\u00caN C\u1ee8U M\u1ed8T S\u1ed0 BI\u1ec6N PH\u00c1P K\u1ef8 THU\u1eacT NH\u00c2N GI\u1ed0NG V\u00d4 T\u00cdNH C\u00c2Y X\u1ea0 \u0110EN (Ehretia asperula<\/em> Zollinger Et Moritzi)<\/p>\n

<\/a>Ng\u00f4 \u0110\u1ee9c Nh\u1ea1c, L\u00ea \u0110o\u00e0n Duy, L\u00ea Minh C\u01b0\u1eddng, Nguy\u1ec5n C\u00f4ng Ph\u01b0\u01a1ng,
\n\u0110\u1eb7ng Th\u1ecb Tuy\u1ebft, Tr\u1ea7n Thanh S\u01a1n, V\u00f5 Th\u1ecb Th\u1ea3o, Nguy\u1ec5n \u0110\u1ee9c Long<\/p>\n

Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p \u0110\u00f4ng B\u1eafc B\u1ed9<\/p>\n

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

X\u1ea1 \u0111en (Ehretia asperula<\/em> Zollinger et Moritzi) l\u00e0 c\u00e2y d\u01b0\u1ee3c li\u1ec7u qu\u00fd c\u00f3 nhi\u1ec1u t\u00e1c d\u1ee5ng nh\u01b0 ph\u00f2ng ch\u1ed1ng ung th\u01b0, \u0111i\u1ec1u tr\u1ecb l\u1edf lo\u00e9t, kh\u00e1ng u v\u00e0 ti\u00eau vi\u00eam. Hi\u1ec7n nay, nhu c\u1ea7u khai th\u00e1c X\u1ea1 \u0111en \u1edf Vi\u1ec7t Nam r\u1ea5t l\u1edbn, tuy nhi\u00ean kh\u1ea3 n\u0103ng t\u00e1i sinh t\u1eeb h\u1ea1t c\u1ee7a lo\u00e0i c\u00e2y n\u00e0y r\u1ea5t th\u1ea5p do trong h\u1ea1t c\u1ee7a X\u1ea1 \u0111en c\u00f3 ch\u1ee9a tinh d\u1ea7u, d\u1eabn \u0111\u1ebfn nguy c\u01a1 c\u1ea1n ki\u1ec7t ngo\u00e0i t\u1ef1 nhi\u00ean. V\u00ec v\u1eady, nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1eb1m x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh c\u00e2y X\u1ea1 \u0111en, g\u00f3p ph\u1ea7n cung c\u1ea5p c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c t\u1ea1o c\u00e2y gi\u1ed1ng X\u1ea1 \u0111en ch\u1ea5t l\u01b0\u1ee3ng cao. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y gi\u00e1 th\u1ec3 gi\u00e2m hom t\u1ed1t nh\u1ea5t l\u00e0: gi\u00e1 th\u1ec3 \u0111\u1ea5t (50%) + m\u00f9n c\u01b0a (30%) + x\u01a1 d\u1eeba (20%) \u0111\u00f3ng b\u1ea7u \u0111\u01b0\u1ee3c \u0111\u00f3ng v\u00e0o b\u1ea7u cho t\u1ef7 l\u1ec7 ra r\u1ec5 \u0111\u1ea1t 83,7%, t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t tr\u00ean 81% v\u00e0 c\u00e2y gi\u1ed1ng xu\u1ea5t v\u01b0\u1eddn sau 3 th\u00e1ng gi\u00e2m. V\u1ecb tr\u00ed gi\u00e2m hom t\u1ed1t nh\u1ea5t l\u00e0 c\u00e0nh hom b\u00e1nh t\u1ebb cho t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 xu\u1ea5t v\u01b0\u1eddn cao nh\u1ea5t. Chi\u1ec1u d\u00e0i hom gi\u00e2m t\u1ed1t nh\u1ea5t v\u1edbi \u0111o\u1ea1n hom d\u00e0i t\u1eeb 10 – 12 cm c\u00f3 t\u1eeb 2 – 3 ch\u1ed3i ng\u1ee7, cho t\u1ef7 l\u1ec7 ra r\u1ec5 82,8% v\u00e0 xu\u1ea5t v\u01b0\u1eddn cao nh\u1ea5t. Ti\u00eau chu\u1ea9n c\u00e2y gi\u1ed1ng c\u00f3 chi\u1ec1u cao t\u1eeb 20 – 25 cm, c\u00f3 l\u00e1 th\u1eadt, c\u00f3 t\u1eeb 4 – 6 r\u1ec5.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Gi\u00e2m hom, Ehretia asperula<\/em> Zollinger et Moritzi, nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh, X\u1ea1 \u0111en.<\/p>\n

<\/a>SOME TECHNICAL METHODS FOR ASEXUAL PROPAGATION OF EHRETIA ASPERULA<\/em> ZOLLINGER ET MORITZI<\/p>\n

Ngo Duc Nhac, Le Doan Duy, Le Minh Cuong, Nguyen Cong Phuong,
\nDang Thi Tuyet, Tran Thanh Son, Vo Thi Thao, Nguyen Duc Long<\/p>\n

Forest Science Centre of North-Eastern Vietnam<\/p>\n

ABSTRACT<\/p>\n

Ehretia asperula<\/em> is a precious medicinal plant with many effects such as cancer prevention, ulcer treatment, anti-tumor and anti-inflammatory properties. There is currently a high demand in Vietnam for the exploitation of Ehretia asperula<\/em>; however, the plant’s ability to regenerate from its seeds is very limited. This is because the seeds of this species contain essential oils, which puts the plant at risk of being depleted in the wild. Therefore, this study was conducted to identify some technical methods for asexual propagation of Ehretia asperula<\/em>, contributing to providing a scientific basis for creating high-quality Ehretia asperula<\/em> seedlings. Research results show that the best rooting medium for cuttings is soil medium (50%) + sawdust (30%) + coconut fiber (20%) packed into pots for a rooting rate of 83.7%, the survival rate reached over 81% and the seedlings were exported after 3 months of cutting. The best location for cuttings is tree branch buds, giving the highest rate of rooting and exporting. The best cutting length is 10 to 12 cm long with 2 to 3 dormant buds, providing the highest rooting rate of 82.8%. Standard seedlings are 20 to 25 cm tall and have 4 to 6 roots.<\/p>\n

Keywords<\/em><\/strong>:<\/em> Cuttings, Ehretia asperula<\/em> Zollinger et Moritzi, asexual propagation.<\/p>\n


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

<\/a><\/a>\u0110\u00c1NH GI\u00c1 SINH TR\u01af\u1edeNG, N\u0102NG SU\u1ea4T V\u00c0 CH\u1eccN L\u1eccC C\u00c2Y TR\u1ed8I C\u1ee6A M\u1ed8T S\u1ed0 LO\u00c0I C\u00c2Y B\u1ea2N \u0110\u1ecaA T\u1ea0I T\u1ec8NH QU\u1ea2NG NINH<\/p>\n

<\/a>Cao V\u0103n L\u1ea1ng1<\/sup>, L\u00e2m V\u0103n Phong2<\/sup>, La \u00c1nh D\u01b0\u01a1ng3<\/sup>, V\u0169 V\u0103n Thi\u1ec7n2<\/sup>, Do\u00e3n Ho\u00e0ng S\u01a1n3<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>S\u1edf Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 t\u1ec9nh Qu\u1ea3ng Ninh
\n3<\/sup>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

K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 r\u1eebng tr\u1ed3ng m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba S\u1ed3i ph\u1ea3ng, Gi\u1ed5i xanh, Sa m\u1ed9c t\u1ea1i Qu\u1ea3ng Ninh cho th\u1ea5y, r\u1eebng tr\u1ed3ng c\u00e2y S\u1ed3i ph\u1ea3ng 13 tu\u1ed5i t\u1ea1i x\u00e3 \u0110\u1ed3ng L\u00e2m, th\u00e0nh ph\u1ed1 H\u1ea1 Long c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 81,8%, \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh \u0111\u1ea1t 18,4 cm, chi\u1ec1u cao v\u00fat ng\u1ecdn 16,0 m, n\u0103ng su\u1ea5t \u0111\u1ea1t 10,7 m3<\/sup>\/ha\/n\u0103m. C\u0103n c\u1ee9 v\u00e0o c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y \u0111\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c 14 c\u00e2y tr\u1ed9i S\u1ed3i ph\u1ea3ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh v\u01b0\u1ee3t t\u1eeb 35,7 – 77,5%, chi\u1ec1u cao v\u00fat ng\u1ecdn v\u01b0\u1ee3t t\u1eeb 14,9 – 46,0% so v\u1edbi c\u00e1c ch\u1ec9 ti\u00eau trung b\u00ecnh c\u1ee7a qu\u1ea7n th\u1ec3. R\u1eebng tr\u1ed3ng c\u00e2y Gi\u1ed5i xanh 13 tu\u1ed5i t\u1ea1i x\u00e3 \u0110\u1ed3ng L\u00e2m, th\u00e0nh ph\u1ed1 H\u1ea1 Long c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 83,3%, \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh \u0111\u1ea1t 16,2 cm, chi\u1ec1u cao v\u00fat ng\u1ecdn 13,1 m, n\u0103ng su\u1ea5t \u0111\u1ea1t 6,9 m3<\/sup>\/ha\/n\u0103m v\u00e0 \u0111\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c 13 c\u00e2y tr\u1ed9i t\u1eeb r\u1eebng tr\u1ed3ng n\u00e0y c\u00f3 \u0111\u01b0\u1eddng k\u00ednh v\u01b0\u1ee3t t\u1eeb 26,4 – 44,6%, chi\u1ec1u cao v\u00fat ng\u1ecdn v\u01b0\u1ee3t t\u1eeb 10,3 – 24,1% so v\u1edbi c\u00e1c ch\u1ec9 ti\u00eau trung b\u00ecnh c\u1ee7a qu\u1ea7n th\u1ec3. R\u1eebng tr\u1ed3ng c\u00e2y Sa m\u1ed9c 13 tu\u1ed5i t\u1ea1i x\u00e3 Thanh S\u01a1n, huy\u1ec7n Ba Ch\u1ebd c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 61,9%, \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh \u0111\u1ea1t 13,5 cm, chi\u1ec1u cao v\u00fat ng\u1ecdn 16,9 m, n\u0103ng su\u1ea5t \u0111\u1ea1t 14,4 m3<\/sup>\/ha\/n\u0103m v\u00e0 \u0111\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c 12 c\u00e2y tr\u1ed9i c\u00f3 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c v\u01b0\u1ee3t t\u1eeb 45,3 – 88,3%, chi\u1ec1u cao v\u00fat ng\u1ecdn v\u01b0\u1ee3t t\u1eeb 23,4 – 50,9% so v\u1edbi c\u00e1c ch\u1ec9 ti\u00eau trung b\u00ecnh c\u1ee7a qu\u1ea7n th\u1ec3.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>:<\/em> Sinh tr\u01b0\u1edfng, n\u0103ng su\u1ea5t, c\u00e2y tr\u1ed9i, c\u00e2y b\u1ea3n \u0111\u1ecba, t\u1ec9nh Qu\u1ea3ng Ninh.<\/p>\n

<\/a>EVALUATION OF GROWTH, PRODUCTIVITY AND SELECTION PLUS TREE
\nOF SOME INDIGENOUS TREE SPECIES IN QUANG NINH PROVINCE<\/p>\n

Cao Van Lang1<\/sup>, Lam Van Phong2<\/sup>, La Anh Duong3<\/sup>, Vu Van Thien2<\/sup>, Doan Hoang Son3<\/sup><\/p>\n

1<\/sup>Vietnamese Academy of Forest Sciences
\n2<\/sup>Quang Ninh Department of Science and Technology
\n3<\/sup>Institute of Forest Tree Improvement and Biotechnology<\/p>\n

SUMMARY<\/p>\n

The results of the evaluation of the plantation forests of some native tree species such as Castanopsis cerebrina<\/em> (Hickel & A. Camus) Barnett, Magnolia mediocris<\/em> (Dandy) Figlar and Cunninghamia lanceolata<\/em> (Lamb.) Hook. in Quang Ninh province show that the 13-year-old Castanopsis cerebrina<\/em> (Hickel & A. Camus) Barnett plantation forest in Dong Lam commune, Ha Long city has a survival rate of 81.8%, the average diameter is 18.4 cm, the peak height is 16.0 m, and the yield is 10.7 m3<\/sup>\/ha\/year. Based on growth criteria and tree trunk quality, 14 plus trees were selected with diameter exceeding 35.7 – 77.5% and peak height exceeding 14.9 – 46.0%. compared to the population average. The 13-year-old Magnolia mediocris<\/em> (Dandy) Figlar plantation forest in Dong Lam commune, Ha Long city has a survival rate of 83.3%, an average diameter of 16.2 cm, a peak height of 13.1 m, and a yield of 6.9 m3<\/sup>\/ha\/year and selected 13 plus trees from this forest with diameter exceeding 26.4 – 44.6% and peak height exceeding 10.3 – 24.1% compared to the population average. The 13-year-old Cunninghamia lanceolata<\/em> (Lamb.) Hook. plantation forest in Thanh Son commune, Ba Che district has a survival rate of 61.9%, an average diameter of 13.5 cm, a peak height of 16.9 m, and a productivity of 14.4 m3<\/sup>\/ha\/year and selected 12 plus trees with diameter at breast height exceeding 45.3 – 88.3% and peak height exceeding 23.4 – 50.9% compared to the average criteria of the population.<\/p>\n

Keywords:<\/em><\/strong> Growth, productivity, plus tree, native plants, Quang Ninh province.<\/p>\n

 <\/p>\n

 <\/p>\n

<\/a>\u0110A D\u1ea0NG SINH H\u1eccC LO\u00c0I C\u00c2Y G\u1ed6 T\u1ea0I R\u1eeaNG T\u1ef0 NHI\u00caN
\nHUY\u1ec6N BA CH\u1ebc, T\u1ec8NH QU\u1ea2NG NINH<\/p>\n

<\/a>Nguy\u1ec5n To\u00e0n Th\u1eafng1<\/sup>, Tr\u1ea7n V\u0103n \u0110\u00f41<\/sup>, Nguy\u1ec5n Tr\u1ecdng Minh2<\/sup>,
\nHo\u00e0ng Thanh S\u01a1n1<\/sup>, Ph\u00f9ng \u0110\u00ecnh Trung3<\/sup>, Nguy\u1ec5n V\u0103n Tu\u1ea5n1<\/sup>, \u0110\u00e0o Trung \u0110\u1ee9c1<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p
\n3<\/sup>C\u00f4ng ty TNHH T\u01b0 v\u1ea5n v\u00e0 Ph\u00e1t tri\u1ec3n \u0110\u1ed3ng Xanh<\/p>\n

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

Ba Ch\u1ebd l\u00e0 huy\u1ec7n mi\u1ec1n n\u00fai thu\u1ed9c t\u1ec9nh Qu\u1ea3ng Ninh c\u00f3 t\u1ed5ng di\u1ec7n t\u00edch r\u1eebng t\u1ef1 nhi\u00ean 12.383,15 ha v\u1edbi 4.980,41 ha r\u1eebng t\u1ef1 nhi\u00ean ph\u00f2ng h\u1ed9 (RPH) v\u00e0 7.402,74 ha r\u1eebng t\u1ef1 nhi\u00ean s\u1ea3n xu\u1ea5t (RSX). Th\u1ef1c tr\u1ea1ng \u0111a d\u1ea1ng sinh h\u1ecdc lo\u00e0i c\u00e2y r\u1eebng t\u1ef1 nhi\u00ean t\u1ea1i Ba Ch\u1ebd l\u00e0 nh\u1eefng th\u00f4ng tin c\u1ea7n thi\u1ebft g\u00f3p ph\u1ea7n v\u00e0o c\u00f4ng t\u00e1c b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n t\u00e0i nguy\u00ean thi\u00ean nhi\u00ean v\u00e0 \u0111a d\u1ea1ng sinh h\u1ecdc t\u1ea1i \u0111\u00e2y. L\u1ef1a ch\u1ecdn \u00f4 ti\u00eau chu\u1ea9n (\u00d4TC) ng\u1eabu nhi\u00ean v\u00e0 l\u1eadp \u00d4TC (1.000 m2<\/sup>: 33,3 m \u00b4 30 m) t\u1ea1m th\u1eddi \u0111\u1ec3 thu th\u1eadp th\u00f4ng tin hi\u1ec7n tr\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong nghi\u00ean c\u1ee9u n\u00e0y. S\u1ed1 li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp t\u1ea1i 42 \u00d4TC, trong \u0111\u00f3 8 \u00d4TC t\u1ea1i RPH v\u00e0 34 \u00d4TC t\u1ea1i RSX. K\u1ebft qu\u1ea3 \u0111\u00e3 ghi nh\u1eadn 190 lo\u00e0i, 2.320 c\u00e1 th\u1ec3 v\u1edbi nh\u1eefng lo\u00e0i c\u00f3 > 100 c\u00e1 th\u1ec3 nh\u01b0 Ch\u1eb9o t\u00eda (Engelhardtia chrysolepis<\/em> Hance), Th\u1ea9u t\u1ea5u (Aporosa dioica<\/em> (Roxb.) Muell.-Arg), Th\u00e0nh ng\u1ea1nh (Cratoxylon cochinchinensis<\/em> (Lour.)\u00a0Blume) v\u00e0 Ho\u1eafc quang (Wendlandia tinctoria<\/em> (Roxb.) DC.). C\u00f3 s\u1ef1 kh\u00e1c nhau r\u00f5 r\u00e0ng v\u1ec1 \u0111a d\u1ea1ng sinh h\u1ecdc gi\u1eefa RPH v\u00e0 RSX. S\u1ed1 lo\u00e0i ghi nh\u1eadn t\u1ea1i RPH 20 lo\u00e0i\/\u00d4TC l\u1edbn h\u01a1n so v\u1edbi 18 lo\u00e0i\/\u00d4TC t\u1ea1i RSX. Ch\u1ec9 s\u1ed1 \u0111a d\u1ea1ng sinh h\u1ecdc Shannon: 2,68 t\u1ea1i RPH l\u1edbn h\u01a1n so v\u1edbi 2,43 t\u1ea1i RSX. Ch\u1ec9 s\u1ed1 \u0111a d\u1ea1ng sinh h\u1ecdc \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t\/Evenness: 0,13 t\u1ea1i RPH nh\u1ecf h\u01a1n so v\u1edbi 0,15 t\u1ea1i RSX. T\u1ea1i RPH, kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c nhau v\u1ec1 \u0111a d\u1ea1ng gi\u1eefa \u0111ai cao \u2265 200 m v\u00e0 \u0111ai cao < 200 m. Ng\u01b0\u1ee3c l\u1ea1i, c\u00f3 s\u1ef1 kh\u00e1c nhau r\u00f5 r\u00e0ng gi\u1eefa 2 \u0111ai cao t\u1ea1i RSX, \u0111ai cao \u2265 200 m c\u00f3 s\u1ed1 lo\u00e0i (24 lo\u00e0i) v\u00e0 ch\u1ec9 s\u1ed1 Shannon (2,66) cao h\u01a1n \u0111ai cao < 200 m (15 lo\u00e0i v\u00e0 Shannon = 2,35). Nghi\u00ean c\u1ee9u n\u00e0y cho th\u1ea5y c\u00f3 s\u1ef1 kh\u00e1c nhau v\u1ec1 \u0111a d\u1ea1ng sinh h\u1ecdc gi\u1eefa RPH v\u00e0 RSX, v\u00e0 gi\u1eefa 2 \u0111ai cao. S\u1ef1 kh\u00e1c nhau n\u00e0y l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a c\u00f4ng t\u00e1c qu\u1ea3n l\u00fd r\u1eebng gi\u1eefa 2 \u0111\u1ed1i t\u01b0\u1ee3ng RPH v\u00e0 RSX. T\u1eeb th\u1ef1c t\u1ebf \u0111\u00f3 c\u1ea7n ch\u00fa tr\u1ecdng h\u01a1n n\u1eefa \u0111\u1ed1i v\u1edbi c\u00f4ng t\u00e1c b\u1ea3o v\u1ec7 v\u00e0 ph\u00e1t tri\u1ec3n RSX \u0111\u1ec3 v\u1eeba \u0111em l\u1ea1i l\u1ee3i \u00edch kinh t\u1ebf cho ch\u1ee7 r\u1eebng, v\u1eeba b\u1ea3o t\u1ed3n \u0111a d\u1ea1ng sinh h\u1ecdc v\u00e0 t\u0103ng gi\u00e1 tr\u1ecb b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>:<\/em> B\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n, \u0111a d\u1ea1ng lo\u00e0i c\u00e2y, \u0111ai cao, r\u1eebng ph\u00f2ng h\u1ed9, r\u1eebng s\u1ea3n xu\u1ea5t, r\u1eebng t\u1ef1 nhi\u00ean.<\/p>\n

<\/a>Diversity of forest tree species in nature forests,
\nBa Che District, Quang Ninh Province<\/p>\n

Nguyen Toan Thang1<\/sup>, Tran Van Do1<\/sup>, Nguyen Trong Minh2<\/sup>,
\n<\/sup>Hoang Thanh Son1<\/sup>, Phung Dinh Trung3<\/sup>, Nguyen Van Tuan1<\/sup>, Dao Trung Duc1<\/sup><\/p>\n

1<\/sup> Silvicultural Research Insititute
\n2<\/sup> Vietnam National University of Forestry
\n<\/sup>3<\/sup>Green Field Consulting & Development Limited Company<\/p>\n

Summary<\/p>\n

Ba Che, a mountainous district of Quang Ninh Province, has a total natural forest area of 12,383.15 ha including 4,980.41 ha of protection forest and 7,402.74 ha of production forest. Information on tree species diversity is becoming important for biodiversity protection program and forest resource management in Ba Che District. Temporary plots of 1,000 m2<\/sup> each (33.3 m \u00b4 30 m) were used to collect field data. Totally, 42 plots were collected including eight in protection forest and 34 in production forest. The results indicated that 190 tree species were recorded with a total of 2,320 individuals. Engelhardtia chrysolepis<\/em> Hance, Aporosa dioica<\/em> (Roxb.) Muell.-Arg, Cratoxylon cochinchinensis<\/em> (Lour.)\u00a0Blume, and Wendlandia tinctoria<\/em> (Roxb.) DC were four most abundant species with more than 100 individuals each. Tree species diversity was significantly different between protection and production forests. Species number was 20 per plot in protection forest, significantly higher than that in production forest; Shannon index in protection forest was 2.68 higher than that in production forest. Meanwhile, Evenness index in production forest (0.15) was higher than that in protection forest. There was no significant difference on biodiversity between \u2265 200 m elevation zone and < 200 m elevation zone in protection forest. Conversely, it was significantly different between two elevation zones in production forest; \u2265 200 m elevation zone had mean of 24 species per plot and Shannon index of 2.66, higher than that in < 200 m elevation zone. The research indicated that there were significant differences on tree species diversity between protection and production forests, and between two elevation zones. The differences resulted from management activities applied in these forests. The research suggests that management activities must be accelerated to production forest to more benefit forest owners, protect biodiversity, and contribute to environment protection.<\/p>\n

Keywords:<\/em><\/strong> Conservation and development, tree species diversity, elevation zone, protection forest, production forest, nature forest.<\/p>\n

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<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A TH\u00c0NH PH\u1ea6N RU\u1ed8T B\u1ea6U V\u00c0 CH\u1ebe \u0110\u1ed8 CHE S\u00c1NG \u0110\u1ebeN SINH TR\u01af\u1edeNG V\u00c0 PH\u00c1T TRI\u1ec2N C\u00c2Y CON
\nRE G\u1eeaNG (Cinnamomum bejolghota<\/em> (Buch-Ham)
\nGIAI \u0110O\u1ea0N V\u01af\u1edcN \u01af\u01a0M<\/p>\n

<\/a>Nguy\u1ec5n H\u1eefu Th\u1ecbnh, L\u1ea1i Thanh H\u1ea3i, Nguy\u1ec5n Th\u00f9y D\u01b0\u01a1ng<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/p>\n

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

Re g\u1eebng Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn b\u1ea3n \u0111\u1ecba, \u0111a t\u00e1c d\u1ee5ng, hi\u1ec7n nay \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng tr\u1ed3ng \u0111\u1ec3 l\u1ea5y tinh d\u1ea7u. Tuy nhi\u00ean, vi\u1ec7c nh\u00e2n gi\u1ed1ng c\u00e2y con giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m c\u1ea7n c\u00f3 nh\u1eefng nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c t\u00ednh sinh l\u00fd, sinh th\u00e1i \u0111\u1ec3 t\u1ea1o ra nh\u1eefng c\u00e2y gi\u1ed1ng kh\u1ecfe m\u1ea1nh, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u th\u1ef1c t\u1ebf s\u1ea3n xu\u1ea5t. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, th\u00e0nh ph\u1ea7n h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u 94% \u0111\u1ea5t m\u1eb7t + 5% ph\u00e2n chu\u1ed3ng + 1% Super l\u00e2n l\u00e0 t\u1ed1t nh\u1ea5t cho c\u00e2y con Re g\u1eebng trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m. C\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m che s\u00e1ng kh\u00f4ng c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t \u0111\u1ebfn t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u00e2y con m\u00e0 c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y con v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c v\u00e0 chi\u1ec1u cao v\u00fat ng\u1ecdn. C\u00f4ng th\u1ee9c che s\u00e1ng 75% l\u00e0 t\u1ed1t nh\u1ea5t cho c\u00e2y con sinh tr\u01b0\u1edfng trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m \u1edf t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 ti\u00eau \u0111o \u0111\u1ebfm.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>Re g\u1eebng, th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u, ch\u1ebf \u0111\u1ed9 che s\u00e1ng.<\/p>\n

<\/a>INFLUENCE OF GALLERY COMPOSITION AND COVERING REGIME TO THE GROWTH AND DEVELOPMENT OF PLANTS Cinnamomum bejolghota<\/em> (Buch-Ham)
\nNURTURE PHASE<\/p>\n

Nguyen Huu Thinh, Lai Thanh Hai, Nguyen Thuy Duong<\/p>\n

Silvicultural Research Insititute<\/p>\n

SUMMARY<\/p>\n

Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet is a large, multi-purpose native tree species, currently popularly grown for essential oil. However, breeding seedlings at the nursery stage requires research on physiological and ecological characteristics to create healthy seedlings, ensuring quality to meet actual production requirements. Research results show that the potting mixture composition of 94% topsoil + 5% manure + 1% Super phosphate is the best for Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet seedlings in the nursery stage. The light shading experimental formulas did not have a clear effect on the survival rate of seedlings but had a clear effect on the growth of seedlings in terms of base diameter and top height. The 75% shading formula is best for seedlings growing in the nursery stage in all measured parameters.<\/p>\n

Keywords:<\/em><\/strong> Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet, gourd ingredients, shading mode.<\/p>\n


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

<\/a>C\u1ea4U TR\u00daC, \u0110A D\u1ea0NG LO\u00c0I V\u00c0 SINH KH\u1ed0I TR\u00caN M\u1eb6T \u0110\u1ea4T
\nC\u1ee6A R\u1eeaNG L\u00c1 R\u1ed8NG TH\u01af\u1edcNG XANH
\n\u1ede V\u01af\u1edcN QU\u1ed0C GIA PHIA O\u1eaeC – PHIA \u0110\u00c9N<\/p>\n

<\/a>Qu\u1ed1c Minh D\u0169ng1<\/sup>, Nguy\u1ec5n Th\u1ecb H\u01b0\u01a1ng Ly2<\/sup> , L\u00ea Anh Thanh2<\/sup>, Nguy\u1ec5n V\u0103n Qu\u00fd3<\/sup><\/p>\n

1<\/sup>V\u0103n ph\u00f2ng t\u1ec9nh \u1ee7y, t\u1ec9nh Cao B\u1eb1ng
\n2<\/sup>Trung t\u00e2m khoa h\u1ecdc l\u00e2m nghi\u1ec7p T\u00e2y B\u1eafc – Vi\u1ec7n khoa h\u1ecdc l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n3<\/sup>Trung t\u00e2m Nhi\u1ec7t \u0111\u1edbi Vi\u1ec7t – Nga, Chi nh\u00e1nh Ph\u00eda Nam<\/p>\n

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

C\u00e1c h\u1ec7 sinh th\u00e1i r\u1eebng \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c c\u00f4 l\u1eadp carbon to\u00e0n c\u1ea7u. Tuy nhi\u00ean, m\u1ed1i quan h\u1ec7 gi\u1eefa c\u1ea5u tr\u00fac r\u1eebng v\u00e0 \u0111a d\u1ea1ng sinh h\u1ecdc v\u1edbi sinh kh\u1ed1i carbon tr\u00ean m\u1eb7t \u0111\u1ea5t (AGCB) v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c hi\u1ec3u r\u00f5 t\u1ea1i V\u01b0\u1eddn qu\u1ed1c gia Phia O\u1eafc – Phia \u0110\u00e9n. S\u00e1u \u00f4 nghi\u00ean c\u1ee9u (ONC) c\u00f3 di\u1ec7n t\u00edch 10.000 m2<\/sup> thu\u1ed9c hai \u00f4 \u0111\u1ecbnh v\u1ecb nghi\u00ean c\u1ee9u sinh th\u00e1i qu\u1ed1c gia (ODV) s\u1ed1 12 v\u00e0 13 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u. Trong m\u1ed7i ONC, t\u00ean lo\u00e0i, chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn<\/sub>) v\u00e0 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c (D1,<\/sub>3<\/sub>) c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c c\u00e2y th\u00e2n g\u1ed7 c\u00f3 D1,<\/sub>3<\/sub> t\u1eeb 6 cm tr\u1edf l\u00ean \u0111\u01b0\u1ee3c \u0111\u1ecbnh danh v\u00e0 \u0111o \u0111\u1ebfm. K\u1ebft qu\u1ea3 cho th\u1ea5y, t\u1ed5ng s\u1ed1 1.759 c\u00e1 th\u1ec3 c\u00e2y c\u1ee7a 62 lo\u00e0i v\u00e0 32 h\u1ecd \u0111\u01b0\u1ee3c ghi nh\u1eadn trong 02 ODV. Trong \u0111\u00f3, s\u1ed1 lo\u00e0i, s\u1ed1 h\u1ecd v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 \u0111a d\u1ea1ng Shannon-Wiener, Simpson, Pielou c\u1ee7a ODV 13 cao h\u01a1n ODV 12. AGCB c\u1ee7a ODV 13 c\u0169ng cao h\u01a1n ODV 12, ch\u1ee9ng t\u1ecf AGCB c\u00f3 s\u1ef1 li\u00ean k\u1ebft v\u1edbi y\u1ebfu t\u1ed1 \u0111a d\u1ea1ng lo\u00e0i c\u1ee7a 02 ODV. M\u1ed1i quan h\u1ec7 gi\u1eefa D1,<\/sub>3 <\/sub>– Hvn<\/sub> c\u1ee7a c\u00e1c ONC thu\u1ed9c hai ODV \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng h\u1ec7 s\u1ed1 R2<\/sup> dao \u0111\u1ed9ng \u1edf m\u1ee9c t\u01b0\u01a1ng \u0111\u1ed1i ch\u1eb7t (0,66) \u0111\u1ebfn ch\u1eb7t (0,84). H\u00e0m t\u01b0\u01a1ng quan \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 h\u00e0m c\u00f3 gi\u00e1 tr\u1ecb R2<\/sup> l\u1edbn nh\u1ea5t v\u00e0 gi\u00e1 tr\u1ecb AIC nh\u1ecf nh\u1ea5t \u0111\u1ec3 h\u1ea1n ch\u1ebf nh\u1eefng sai l\u1ec7ch \u00edt nh\u1ea5t trong \u01b0\u1edbc t\u00ednh tr\u1eef l\u01b0\u1ee3ng carbon trong r\u1eebng. Nghi\u00ean c\u1ee9u n\u00e0y g\u00f3p ph\u1ea7n l\u00e0m r\u00f5 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u1ea5u tr\u00fac r\u1eebng v\u00e0 \u0111a d\u1ea1ng sinh h\u1ecdc v\u1edbi AGB trong r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>Sinh kh\u1ed1i carbon tr\u00ean m\u1eb7t \u0111\u1ea5t, th\u00e0nh ph\u1ea7n lo\u00e0i, c\u1ea5u tr\u00fac r\u1eebng, r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh.<\/strong><\/p>\n

<\/a>STRUCTURE, SPECIES DIVERSITY AND Aboveground Biomass
\nof Evergreen Broadleaf Forests in Phia OAc – Phia Den National Park<\/p>\n

Quoc Minh Dung1<\/sup>, Nguyen Thi Huong Ly2<\/sup>, Le Anh Thanh2<\/sup>, Nguyen Van Quy3<\/sup><\/p>\n

1<\/sup>Provincial Party Committee Office, Cao Bang province
\n2<\/sup>Northwest Forest Science Center – Vietnam Forest Science Institute
\n3<\/sup>Vietnam – Russian Tropical Center, Southern Branch<\/p>\n

ABSTRACT<\/p>\n

Forest ecosystems play an important role in global carbon sequestration. However, the relationship between forest structure, biodiversity and aboveground biomass carbon (AGB) is still not well understood in Phia Oac – Phia Den National Park. Six study plots (ONC) with an area of \u200b\u200b10,000 m2<\/sup> belonging to two permanent ecological research plots (ODV) numbers 12 and 13 were used for data collection. In each ONC, species name, total height (Hvn<\/sub>) and diameter at breast height (D1.<\/sub>3<\/sub>) of all woody trees with D1.<\/sub>3<\/sub> of 6 cm or more are identified and measured. The results showed that a total of 1,759 individual trees belonging to 62 species and 32 families were recorded in 02 ODV. In particular, species richness, number of families and diversity indices such \u00e1 Shannon-Wiener, Simpson, Pielou evenness of ODV 13 were higher than that of ODV 12. AGB of ODV 13 was also higher than ODV 12, showing that AGB is linked to species diversity in 02 ODVs. The relationships between D1.<\/sub>3<\/sub> – Hvn<\/sub> of the ONCs were expressed by the R2<\/sup> coefficient, which ranges from relatively tight (0.66) to tight (0.84). The correlation function was selected with the largest R2<\/sup> value and the smallest AIC value to limit the least deviations in estimating carbon stocks in these forests. This study contributes to clarifying the relationship between forest structure and biodiversity with AGB in evergreen broadleaf forests in the study area.<\/p>\n

Keywords:<\/em> <\/strong>Aboveground carbon biomass, species composition, forest structure, broadleaf evergreen forest.<\/p>\n

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<\/a>M\u1ed0I QUAN H\u1ec6
\nC\u1ee6A RE G\u1eeaNG (Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet)
\nV\u1edaI C\u00c1C LO\u00c0I C\u00c2Y B\u1ea0N TRONG M\u1ed8T S\u1ed0 TR\u1ea0NG TH\u00c1I
\nR\u1eeaNG T\u1ef0 NHI\u00caN<\/p>\n

<\/a>L\u1ea1i Thanh H\u1ea3i, Nguy\u1ec5n H\u1eefu Th\u1ecbnh<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/p>\n

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

Nghi\u00ean c\u1ee9u v\u1ec1 m\u1ed1i quan h\u1ec7 qua l\u1ea1i gi\u1eefa Re g\u1eebng v\u00e0 c\u00e1c lo\u00e0i c\u00e2y trong r\u1eebng t\u1ef1 nhi\u00ean l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft cho vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh t\u1ed5 th\u00e0nh lo\u00e0i c\u00e2y trong c\u00e1c l\u00e2m ph\u1ea7n r\u1eebng t\u1ef1 nhi\u00ean khi c\u1ea7n t\u00e1c \u0111\u1ed9ng c\u00e1c gi\u1ea3i ph\u00e1p l\u00e2m sinh. Quan tr\u1ecdng h\u01a1n, \u0111\u00f3 l\u00e0 c\u01a1 s\u1edf cho vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng h\u1ed7n giao v\u1edbi Re g\u1eebng. \u0110\u1ec3 nghi\u00ean c\u1ee9u m\u1ed1i quan h\u1ec7 gi\u1eefa Re g\u1eebng v\u1edbi c\u00e1c lo\u00e0i c\u00e2y trong r\u1eebng t\u1ef1 nhi\u00ean, s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra \u00f4 6 c\u00e2y v\u00e0 c\u0103n c\u1ee9 v\u00e0o ch\u1ec9 s\u1ed1 t\u1ea7n su\u1ea5t xu\u1ea5t hi\u1ec7n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7. S\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a lo\u00e0i Re g\u1eebng t\u1ea1i c\u00e1c khu v\u1ef1c \u0111i\u1ec1u tra l\u00e0 kh\u00e1 cao, chi\u1ebfm t\u1eeb 46,67% \u0111\u1ebfn 53,33% t\u1ed5ng s\u1ed1 \u00f4 \u0111i\u1ec1u tra. C\u00e1c lo\u00e0i c\u00e2y xu\u1ea5t hi\u1ec7n c\u00f9ng Re g\u1eebng kh\u00e1 l\u1edbn, dao \u0111\u1ed9ng t\u1eeb 38 lo\u00e0i \u0111\u1ebfn 48 lo\u00e0i, trong khi s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i c\u00e2y \u201cth\u01b0\u1eddng xuy\u00ean g\u1eb7p\u201d v\u1edbi Re g\u1eebng r\u1ea5t \u00edt ch\u1ec9 t\u1eeb 3 \u0111\u1ebfn 5 lo\u00e0i: T\u1ea1i H\u00f2a B\u00ecnh l\u00e0 5\/40 lo\u00e0i (g\u1ed3m: Tr\u00e2m tr\u1eafng, Kh\u00e1o v\u00e0ng, Tr\u00e2m n\u00fai, Tr\u00e1m chim v\u00e0 D\u1ebb); t\u1ea1i S\u01a1n La l\u00e0 3\/48 lo\u00e0i (g\u1ed3m: Ng\u00e1t, Kh\u00e1o v\u00e0ng, M\u1eafc ni\u1ec5ng); t\u1ea1i Ph\u00fa Th\u1ecd l\u00e0 3\/38 lo\u00e0i (g\u1ed3m: G\u1ed9i, L\u1ed9c v\u1eebng l\u00e1 to, Ch\u00e2n chim). Kho\u1ea3ng c\u00e1ch trung b\u00ecnh t\u1eeb c\u00e2y Re g\u1eebng \u0111\u1ebfn 6 c\u00e2y xung quanh t\u1ea1i H\u00f2a B\u00ecnh l\u00e0 5,8 m; t\u1ea1i S\u01a1n La l\u00e0 4,8 m v\u00e0 t\u1ea1i Ph\u00fa Th\u1ecd l\u00e0 5,6 m. Re g\u1eebng l\u00e0 lo\u00e0i c\u00f3 sinh tr\u01b0\u1edfng chi\u1ebfm \u01b0u th\u1ebf h\u01a1n so v\u1edbi c\u00e1c lo\u00e0i c\u00e2y xung quanh.<\/p>\n

T\u1eeb<\/em><\/strong> kh\u00f3a:<\/em><\/strong> M\u1ed1i quan h\u1ec7, Re g\u1eebng<\/p>\n

<\/a>RELATIONSHIPS OF Cinnamomum <\/em>b<\/em>ejolghota<\/em> (Buch-Ham) Sweet) WITH NEIGHBOUR SPECIES IN SOME NATURAL FOREST STATE<\/p>\n

Lai Thanh Hai, Nguyen Huu Thinh<\/p>\n

Silvicultural Research Insititute<\/p>\n

Research on the interrelationship between Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet and species in natural forests is essential for adjusting tree species composition in natural forest stands when it is necessary to influence solutions. silviculture. More importantly, it is the basis for choosing mixed forest species with Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet. To study the relationship between Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet and tree species in natural forests, use the 6-tree plot survey method and base on the frequency index to determine the relationship. The occurrence of Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet in the investigated areas is quite high, accounting for 46.67% to 53.33% of the total number of investigated plots. The tree species that appear with Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet are quite large, ranging from 38 species to 48 species, while the number of “frequently encountered” tree species with Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet is very small, ranging from 3 to 5 species: In Hoa Binh, there are 5\/40 species including: Syzygium cumini<\/em>, Machilus bonii<\/em> Lecomte, Syzygium levinei<\/em>, Canarium tonkinense<\/em> Engl, Fagus sylvatica<\/em>; In Son La, there are 3\/48 species including: Gironniera subaequalis<\/em>, <\/em>Machilus bonii<\/em> Lecomte, Zizamia latifolia Turcz<\/em>; In Phu Tho, there are 3\/38 species including: Aphanamixis grandifolia<\/em>\u00a0Blume, Barringtonia acutangula<\/em>. The average distance from the Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet tree to 6 surrounding trees in Hoa Binh is 5,8 m; in Son La it is 4.8 m and in Phu Tho it is 5.6 m. Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet is a species whose growth is more dominant than surrounding tree species.<\/p>\n

Keywords:<\/em><\/strong> Relation, (Cinnamomum bejolghota<\/em> (Buch-Ham) Sweet)<\/p>\n

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

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

<\/a>\u0110\u00c1NH GI\u00c1 DI\u1ec4N BI\u1ebeN M\u1ed8T S\u1ed0 CH\u1ec8 TI\u00caU V\u1eacT L\u00dd, H\u00d3A H\u1eccC C\u1ee6A \u0110\u1ea4T T\u1ea0I M\u00d4 H\u00ccNH R\u1eeaNG TR\u1ed2NG C\u00c2Y B\u1ea2N \u0110\u1ecaA THU\u1ed8C D\u1ef0 \u00c1N RENFODA \u1ede KHU V\u1ef0C PH\u00d2NG H\u1ed8 S\u00d4NG \u0110\u00c0, T\u1ec8NH H\u00d2A B\u00ccNH<\/p>\n

<\/a>H\u00e0 Th\u1ecb Hi\u1ec1n, H\u00e0 Th\u1ecb Thanh Mai, V\u0169 Qu\u00fd \u0110\u00f4ng<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n

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

Nghi\u00ean c\u1ee9u th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba khu v\u1ef1c r\u1eebng ph\u00f2ng h\u1ed9 xung y\u1ebfu ven h\u1ed3 s\u00f4ng \u0110\u00e0 – H\u00f2a B\u00ecnh thu\u1ed9c D\u1ef1 \u00e1n RENFODA t\u1eeb n\u0103m 2006 – 2022, m\u1eabu \u0111\u1ea5t \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch t\u1ea1i Ph\u00f2ng Th\u00ed nghi\u1ec7m \u0110\u1ea5t, M\u00f4i tr\u01b0\u1eddng v\u00e0 Vi sinh theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a TCVN. K\u1ebft qu\u1ea3 cho th\u1ea5y, sau 16 n\u0103m tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba di\u1ec5n bi\u1ebfn t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, h\u00f3a h\u1ecdc c\u1ee7a \u0111\u1ea5t gi\u1eefa c\u00e1c m\u00f4 h\u00ecnh c\u00f3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 theo h\u01b0\u1edbng t\u1ed1t d\u1ea7n l\u00ean. \u0110\u1ed9 \u1ea9m kh\u00f4 ki\u1ec7t \u1edf c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba \u1edf m\u1ee9c kh\u00f4 trung b\u00ecnh t\u1eeb 2,82 – 2,98% so v\u1edbi m\u00f4 h\u00ecnh \u0111\u1ed1i ch\u1ee9ng r\u1ea5t kh\u00f4 (2,59%). Th\u00e0nh ph\u1ea7n c\u1ea5p h\u1ea1t \u00edt c\u00f3 s\u1ef1 thay \u0111\u1ed5i, c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba c\u1ea5p h\u1ea1t s\u00e9t trung b\u00ecnh t\u1eeb 26,56 – 26,70% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (26,77%), c\u1ea5p h\u1ea1t limon t\u1eeb 34,49 – 34,87% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (34,35%), c\u1ea5p h\u1ea1t c\u00e1t t\u1eeb 38,57 – 38,81% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (38,88%). \u0110\u1ed9 chua pHKCl<\/sub> trung b\u00ecnh t\u1eeb 3,84 – 3,92 \u1edf m\u1ee9c chua m\u1ea1nh cao h\u01a1n so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (3,66). Ch\u1ea5t h\u1eefu c\u01a1 t\u1ed5ng s\u1ed1 t\u1eeb 2,56 – 2,74% \u1edf m\u1ee9c trung b\u00ecnh so v\u1edbi \u0111\u1ed1i ch\u1ee9ng r\u1ea5t ngh\u00e8o (2,02%). \u0110\u1ea1m t\u1ed5ng s\u1ed1 t\u1eeb 0,08 – 0,13% \u1edf m\u1ee9c trung b\u00ecnh so v\u1edbi \u0111\u1ed1i ch\u1ee9ng r\u1ea5t ngh\u00e8o (0,03%). L\u00e2n d\u1ec5 ti\u00eau t\u1eeb 49,68 – 60,89 mg\/kg \u1edf m\u1ee9c ngh\u00e8o so v\u1edbi \u0111\u1ed1i ch\u1ee9ng r\u1ea5t ngh\u00e8o (32,06 mg\/kg); Kali d\u1ec5 ti\u00eau t\u1eeb 57,18 – 65,79 mg\/kg \u1edf m\u1ee9c ngh\u00e8o so v\u1edbi \u0111\u1ed1i ch\u1ee9ng r\u1ea5t ngh\u00e8o (41,45 mg\/kg). Sau 16 n\u0103m tr\u1ed3ng r\u1eebng m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t l\u00fd, h\u00f3a h\u1ecdc c\u1ee7a \u0111\u1ea5t c\u00f3 s\u1ef1 c\u1ea3i thi\u1ec7n l\u00e0m thay \u0111\u1ed5i t\u00ednh ch\u1ea5t \u0111\u1ea5t r\u1eebng theo h\u01b0\u1edbng c\u00f3 l\u1ee3i cho c\u00e2y tr\u1ed3ng, c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba \u0111\u1ec1u c\u00f3 t\u00e1c d\u1ee5ng c\u1ea3i t\u1ea1o \u0111\u1ea5t r\u00f5 r\u1ec7t, trong \u0111\u00f3 m\u00f4 h\u00ecnh tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba xen c\u00e2y C\u1ed1t kh\u00ed cho hi\u1ec7u qu\u1ea3 c\u1ea3i t\u1ea1o \u0111\u1ea5t cao nh\u1ea5t so v\u1edbi c\u00e1c m\u00f4 h\u00ecnh c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f2n l\u1ea1i.<\/p>\n

T\u1eeb kh\u00f3a: <\/em>D\u1ef1 \u00e1n Renfoda, ho\u00e1 h\u1ecdc, m\u00f4 h\u00ecnh tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba, r\u1eebng ph\u00f2ng h\u1ed9 \u0111\u1ea7u ngu\u1ed3n, v\u1eadt l\u00fd<\/p>\n

<\/a>Evaluation of the physical and chemical indicators of soil in the native tree plantation model under the RENFODA project in the watershed area of the Da River, Hoa Binh Province<\/p>\n

Ha Thi Hien, Ha Thi Thanh Mai, Vu Quy Dong<\/p>\n

Research Institute for Forest Ecology and Environment<\/p>\n

SUMMARY<\/p>\n

The study was conducted on native tree plantation models in the vulnerable forest protection area along the Da River in Hoa Binh Province, under the RENFODA project from 2006 to 2022. Soil samples were analyzed in the Laboratory of Soil, Environment, and Microbiology using methods specified by Vietnamese standards (TCVN). The results after 16 years of planting native trees showed significant positive changes in the physical and chemical properties of the soil across the different models, gradually improving over time. The soil moisture content in the models ranged from 2.82% to 2.98%, which was moderately dry compared to the very dry control model at 2.59%. The mechanical composition of the soil showed minimal variation among the models, with clay content ranging from 26.56% to 26.70% compared to 26.77% in the control model, silt content ranging from 34.49% to 34.87% compared to 34.35% in the control model, and sand content ranging from 38.57% to 38.81% compared to 38.88% in the control model. The average pHKCl<\/sub> acidity ranged from 3.84 to 3.92, indicating a higher level of acidity compared to the control model at 3.66. The total organic matter content ranged from 2.56% to 2.74%, which was moderate compared to the very poor level of 2.02% in the control model. The total nitrogen content ranged from 0.08% to 0.13%, which was moderate compared to the very poor level of 0.03% in the control model. The readily available phosphorus content ranged from 49.68 to 60.89 mg\/kg, indicating a poor level compared to the very poor level of 32.06 mg\/kg in the control model. The readily available potassium content ranged from 57.18 to 65.79 mg\/kg, indicating a poor level compared to the very poor level of 41.45 mg\/kg in the control model. After 16 years of forest planting, there was significant improvement in some physical and chemical soil properties, leading to favorable changes in the soil conditions for plant growth. All native tree plantation models had a noticeable effect on soil improvement, with the model incorporating Reynoutria japonica<\/em> showing the highest effectiveness in soil reclamation compared to the other native tree models.<\/p>\n

Keywords:<\/em><\/strong> Project RENFODA, chemical analysis, native tree plantation model, watershed protection forest, physical properties.<\/p>\n

 <\/p>\n

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

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A TU\u1ed4I \u0110\u1ebeN S\u1ef0 BI\u1ebeN \u0110\u1ed8NG K\u00cdCH TH\u01af\u1edaC
\nQU\u1ea2N B\u00c0O G\u1ed6 TH\u00d4NG M\u00c3 V\u0128 (Pinus massoniana<\/em> Lamb.)
\nTR\u1ed2NG T\u1ea0I CAO B\u1eb0NG, VI\u1ec6T NAM<\/p>\n

<\/a>D\u01b0\u01a1ng V\u0103n \u0110o\u00e0n1*<\/sup>, Nguy\u1ec5n Vi\u1ec7t H\u01b0ng1<\/sup>,
\nHo\u00e0ng V\u0103n V\u01692<\/sup>, La \u0110\u1ee9c To\u00e0n3<\/sup>, Nguy\u1ec5n T\u1eed Kim4<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m – \u0110\u1ea1i h\u1ecdc Th\u00e1i Nguy\u00ean
\n2<\/sup>H\u1ea1t Ki\u1ec3m l\u00e2m huy\u1ec7n H\u1ea1 Lang, t\u1ec9nh Cao B\u1eb1ng
\n3<\/sup>Ban Qu\u1ea3n l\u00fd R\u1eebng ph\u00f2ng h\u1ed9 S\u00f4ng Qu\u00e2y S\u01a1n, huy\u1ec7n Tr\u00f9ng Kh\u00e1nh, t\u1ec9nh Cao B\u1eb1ng
\n4<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n

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

Qu\u1ea3n b\u00e0o trong g\u1ed7 c\u00e2y h\u1ea1t tr\u1ea7n t\u01b0\u01a1ng t\u1ef1 nh\u01b0 s\u1ee3i g\u1ed7 trong g\u1ed7 c\u00e2y h\u1ea1t k\u00edn c\u00f3 nhi\u1ec7m v\u1ee5 c\u01a1 h\u1ecdc n\u00e2ng \u0111\u1ee1 th\u00e2n c\u00e2y, ngo\u00e0i ra c\u00f2n l\u00e0m nhi\u1ec7m v\u1ee5 d\u1eabn truy\u1ec1n n\u01b0\u1edbc v\u00e0 dinh d\u01b0\u1ee1ng nu\u00f4i c\u00e2y, do \u0111\u00f3 k\u00edch th\u01b0\u1edbc qu\u1ea3n b\u00e0o l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a g\u1ed7 v\u00e0 bi\u1ebfn \u0111\u1ed9ng theo tu\u1ed5i c\u00e2y. Nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a tu\u1ed5i \u0111\u1ebfn s\u1ef1 bi\u1ebfn \u0111\u1ed9ng k\u00edch th\u01b0\u1edbc qu\u1ea3n b\u00e0o c\u1ee7a g\u1ed7 Th\u00f4ng m\u00e3 v\u0129 tr\u1ed3ng t\u1ea1i Cao B\u1eb1ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y: (1) Bi\u1ebfn \u0111\u1ed9ng k\u00edch th\u01b0\u1edbc theo h\u01b0\u1edbng b\u00e1n k\u00ednh: \u1ede ph\u1ea7n g\u1ed7 s\u1edbm gi\u00e1 tr\u1ecb \u0111\u01b0\u1eddng k\u00ednh qu\u1ea3n b\u00e0o, \u0111\u01b0\u1eddng k\u00ednh khoang r\u1ed7ng v\u00e0 chi\u1ec1u d\u00e0y v\u00e1ch qu\u1ea3n b\u00e0o \u1edf v\u1ecb tr\u00ed g\u1ea7n v\u1ecf lu\u00f4n cao h\u01a1n \u1edf v\u1ecb tr\u00ed g\u1ea7n t\u00e2m. Tuy nhi\u00ean, ph\u00e2n t\u00edch th\u1ed1ng k\u00ea \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng ch\u1ec9 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea (P<\/em> < 0,05) v\u1edbi gi\u00e1 tr\u1ecb k\u00edch th\u01b0\u1edbc qu\u1ea3n b\u00e0o gi\u1eefa hai v\u1ecb tr\u00ed R1 v\u00e0 R2 \u1edf tu\u1ed5i 18 v\u00e0 tu\u1ed5i 24, kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea (P<\/em> > 0,05) v\u1edbi gi\u00e1 tr\u1ecb k\u00edch th\u01b0\u1edbc qu\u1ea3n b\u00e0o gi\u1eefa hai v\u1ecb tr\u00ed R1 v\u00e0 R2 \u1edf tu\u1ed5i 12 m\u1eb7c d\u00f9 gi\u00e1 tr\u1ecb trung b\u00ecnh \u1edf R2 cao h\u01a1n \u1edf v\u1ecb tr\u00ed R1. (2) Bi\u1ebfn \u0111\u1ed9ng k\u00edch th\u01b0\u1edbc qu\u1ea3n b\u00e0o theo tu\u1ed5i c\u00e2y: \u1ede c\u1ea3 ph\u1ea7n g\u1ed7 s\u1edbm v\u00e0 g\u1ed7 mu\u1ed9n, chi\u1ec1u d\u00e0y v\u00e1ch qu\u1ea3n b\u00e0o \u0111\u1ec1u c\u00f3 xu h\u01b0\u1edbng t\u0103ng khi tu\u1ed5i c\u00e2y t\u0103ng l\u00ean. Gi\u00e1 tr\u1ecb chi\u1ec1u d\u00e0y v\u00e1ch qu\u1ea3n b\u00e0o l\u1edbn nh\u1ea5t \u1edf tu\u1ed5i 24 (1,38 \u00b5m \u1edf ph\u1ea7n g\u1ed7 s\u1edbm v\u00e0 2,90 \u00b5m \u1edf ph\u1ea7n g\u1ed7 mu\u1ed9n) v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 \u1edf tu\u1ed5i 12 (1,05 \u00b5m \u1edf ph\u1ea7n g\u1ed7 s\u1edbm v\u00e0 2,20 \u00b5m \u1edf ph\u1ea7n g\u1ed7 mu\u1ed9n). Chi\u1ec1u d\u00e0y v\u00e1ch qu\u1ea3n b\u00e0o l\u00e0 y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng r\u00f5 nh\u1ea5t \u0111\u1ebfn kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a g\u1ed7 Th\u00f4ng m\u00e3 v\u0129 khi gi\u1ea3i th\u00edch \u0111\u1ebfn 66% s\u1ef1 bi\u1ebfn \u0111\u1ed9ng gi\u00e1 tr\u1ecb kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang, k\u00edch th\u01b0\u1edbc qu\u1ea3n b\u00e0o, qu\u1ea3n b\u00e0o, Th\u00f4ng m\u00e3 v\u0129, tu\u1ed5i c\u00e2y<\/p>\n

<\/a>Effect of age on variation in tracheid dimensions of Pinus massoniana<\/em> Lamb. planted in Cao Bang, Vietnam<\/p>\n

Duong Van Doan1,*<\/sup>, Nguyen Viet Hung1<\/sup>, Hoang Van Vu2<\/sup>, La Duc Toan3<\/sup>, Nguyen Tu Kim4<\/sup><\/p>\n

1<\/sup>Thai Nguyen University of Agriculture and Forestry
\n2<\/sup>Ha Lang Administration of Forestry, Cao Bang, Vietnam
\n3<\/sup>Management Board of Protection Forests of Quay Son Rive, Trung Khanh, Cao Bang
\n4<\/sup>Vietnamese Academy of Forest Science<\/p>\n

summary<\/p>\n

Tracheids in softwood are similar to fibers in hardwood, which have the mechanical task of supporting the tree trunk, in addition to carrying out the task of transmitting water and nutrients to feed the tree. Therefore tracheid dimenssion is an important factor affecting the wood properties and varies with the age of the tree. This study aims to evaluate the effect of age on tracheid dimenssion of Pinus massoniana<\/em> planted in Cao Bang. Research results showed: (1) Variation in tracheid dimenssion along the radius direction: In the earlywood, the values \u200b\u200bof tracheid diameter, lumen diameter and cell wall thickness near the bark were always higher than those near the pith. However, statistical analysis showed that there was only a statistically significant difference (P<\/em> < 0.05) in the value of tracheid dimenssion between two radial positions R1 and R2 at age 18 and age 24, while there was no statistically significant difference (P<\/em> > 0.05) in the value of tracheid dimenssion between two positions R1 and R2 at age 12 although the average value at R2 was higher than at position R1. (2) Variation in tracheid with tree age: In both earlywood and latewood, cell wall thickness tended to increase as tree age increases. In this study, the highest cell wall thickness value was at age 24 (1.38 \u00b5m in earlywood and 2.90 \u00b5m in latewood) and the lowest was at age 12 (1.05 \u00b5m in learlywood and 2.20 \u00b5m in latewood). Cell wall thickness is the factor that most clearly affects the density of Pinus massoniana <\/em>wood, explaining up to 66% of the variation in wood density value.<\/p>\n

Keywords:<\/em> <\/strong>Wood density, cell dimensions, tracheid, Pinus massoniana Lamb.<\/em>, tree age<\/p>\n

 <\/p>\n

 <\/p>\n

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

<\/a>S\u1eec D\u1ee4NG \u1ea2NH VI\u1ec4N TH\u00c1M \u0110\u1ec2 \u01af\u1edaC T\u00cdNH SINH KH\u1ed0I R\u1eeaNG
\nTR\u00caN M\u1eb6T \u0110\u1ea4T: TH\u00c1CH TH\u1ee8C V\u00c0 TRI\u1ec2N V\u1eccNG<\/p>\n

<\/a>H\u1ed3 \u0110\u00ecnh B\u1ea3o, Nguy\u1ec5n Th\u1ecb Thanh H\u01b0\u01a1ng<\/p>\n

Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc T\u00e2y Nguy\u00ean<\/p>\n

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

\u0110\u1ecbnh l\u01b0\u1ee3ng sinh kh\u1ed1i r\u1eebng tr\u00ean m\u1eb7t \u0111\u1ea5t (AGB) l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 v\u00f4 c\u00f9ng quan tr\u1ecdng trong gi\u00e1m s\u00e1t bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu to\u00e0n c\u1ea7u. K\u1ef9 thu\u1eadt vi\u1ec5n th\u00e1m \u0111\u00e3 ph\u00e1t tri\u1ec3n tr\u1edf th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu hi\u1ec7u kh\u00f4ng th\u1ec3 thi\u1ebfu trong ti\u1ebfn tr\u00ecnh n\u00e0y. Cho \u0111\u1ebfn nay, \u0111\u00e3 c\u00f3 nhi\u1ec1u nghi\u00ean c\u1ee9u li\u00ean quan \u0111\u1ebfn x\u00e2y d\u1ef1ng c\u00e1c nguy\u00ean t\u1eafc, ngu\u1ed3n d\u1eef li\u1ec7u c\u0169ng nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng vi\u1ec5n th\u00e1m kh\u00e1c nhau \u0111\u1ec3 \u01b0\u1edbc t\u00ednh. AGB \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh d\u1ef1a tr\u00ean c\u00e1c ch\u1ec9 s\u1ed1 \u1ea3nh vi\u1ec5n th\u00e1m k\u1ebft h\u1ee3p v\u1edbi d\u1eef li\u1ec7u \u0111i\u1ec1u tra \u00f4 m\u1eabu tr\u00ean m\u1eb7t \u0111\u1ea5t. C\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 \u1ea3nh v\u1ec7 tinh quang h\u1ecdc, \u1ea3nh v\u1ec7 tinh si\u00eau cao t\u1ea7n, \u1ea3nh LiDAR. M\u1ed7i lo\u1ea1i ngu\u1ed3n d\u1eef li\u1ec7u \u0111\u1ec1u c\u00f3 c\u00e1c \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang trong vi\u1ec7c \u01b0\u1edbc t\u00ednh AGB. Cho d\u00f9 v\u1eady, vi\u1ec5n th\u00e1m v\u1eabn \u0111\u01b0\u1ee3c d\u1ef1 \u0111o\u00e1n s\u1ebd \u0111\u00f3ng m\u1ed9t vai tr\u00f2 ng\u00e0y c\u00e0ng quan tr\u1ecdng trong \u01b0\u1edbc t\u00ednh AGB v\u00ec n\u00f3 cung c\u1ea5p c\u01a1 s\u1edf l\u00fd thuy\u1ebft \u0111\u1ec3 nghi\u00ean c\u1ee9u chu tr\u00ecnh carbon, d\u1eef li\u1ec7u cho vi\u1ec7c mua b\u00e1n t\u00edn ch\u1ec9 carbon c\u0169ng nh\u01b0 trong gi\u00e1m s\u00e1t r\u1eebng. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00f4 h\u00ecnh h\u00f3a kh\u00e1c nhau c\u0169ng mang l\u1ea1i k\u1ebft qu\u1ea3 \u01b0\u1edbc t\u00ednh kh\u00e1c nhau ph\u1ee5 thu\u1ed9c v\u00e0o t\u00ednh s\u1eb5n c\u00f3 c\u1ee7a d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 sai s\u1ed1 trong \u01b0\u1edbc l\u01b0\u1ee3ng. Tuy nhi\u00ean, \u0111\u1ec3 \u01b0\u1edbc t\u00ednh AGB m\u1ed9t c\u00e1ch nhanh ch\u00f3ng, ch\u00ednh x\u00e1c v\u00e0 chi ph\u00ed th\u1ea5p v\u1eabn \u0111ang l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c v\u00e0 c\u1ea7n ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c quan t\u00e2m trong nghi\u00ean c\u1ee9u l\u00e2m nghi\u1ec7p.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Gi\u00e1m s\u00e1t carbon r\u1eebng, sinh kh\u1ed1i r\u1eebng tr\u00ean m\u1eb7t \u0111\u1ea5t, vi\u1ec5n th\u00e1m<\/p>\n

<\/a>USING REMOTE SENSING IMAGES FOR ESTIMATING ABOVEGROUND FOREST BIOMASS: CHALLsENGES AND PROSPECTS<\/p>\n

Ho Dinh Bao, Nguyen Thi Thanh Huong<\/p>\n

Tay Nguyen University<\/p>\n

ABSTRACT<\/p>\n

Quantifying forests aboveground biomass (AGB) is one of the most important factors in monitoring global climate change. Remote sensing techniques have developed into an indispensable tool in this process. So far, there have been many studies related to building principles, data sources and methods of using different remote sensing to estimate. AGB is estimated based on remote sensing image indices combined with ground sample plot survey data. The data sources commonly used are optical satellite images, ultra-high frequency satellite images, LiDAR images. Each type of data source has its own advantages and disadvantages in estimating AGB. However, remote sensing is still predicted to play an increasingly important role in estimating AGB because it provides a theoretical basis for studying the carbon cycle, data for carbon credit trading and forest monitoring. In addition, different modeling methods also lead to different estimation results depending on the availability of input data and the error in estimation. However, estimating AGB quickly, accurately and inexpensively is still a challenge and needs to be further studied in forestry research.<\/p>\n

Keywords:<\/em><\/strong> Forest Carbon monitoring, forest above ground biomass, remote sensing<\/p>\n

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

 <\/p>\n

 <\/p>\n

<\/a>B\u1eaaY \u0110\u00c8N \u0110A T\u00cdNH N\u0102NG PH\u00d2NG TR\u1eea C\u00d4N TR\u00d9NG
\nG\u00c2Y H\u1ea0I C\u00c2Y TR\u1ed2NG N\u00d4NG L\u00c2M NGHI\u1ec6P<\/p>\n

<\/a>L\u00ea Xu\u00e2n Ph\u00fac1<\/sup>, \u0110\u00e0o Ng\u1ecdc Quang2<\/sup>, Cao Ch\u00ed C\u00f4ng1<\/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 B\u1ea3o v\u1ec7 r\u1eebng<\/p>\n

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

S\u1eed d\u1ee5ng b\u1eaby \u0111\u00e8n l\u00e0 bi\u1ec7n ph\u00e1p thu b\u1eaft tr\u01b0\u1edfng th\u00e0nh v\u00e0 di\u1ec7t ch\u1ee7 \u0111\u1ed9ng ngu\u1ed3n \u0111\u1ebb tr\u1ee9ng c\u1ee7a c\u00f4n tr\u00f9ng. B\u1eaby \u0111\u00e8n \u0111a t\u00ednh n\u0103ng l\u00e0 s\u1ea3n ph\u1ea9m nghi\u00ean c\u1ee9u thi\u1ebft k\u1ebf ch\u1ebf t\u1ea1o, k\u1ebf th\u1eeba v\u00e0 ph\u00e1t tri\u1ec3n t\u1eeb B\u1eaby \u0111\u00e8n c\u1ea3i ti\u1ebfn \u0111\u00e3 c\u00f3, \u00e1p d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt, c\u00f4ng ngh\u1ec7 m\u1edbi ti\u00ean ti\u1ebfn v\u00e0 c\u1ea3i ti\u1ebfn k\u1ebft c\u1ea5u, n\u00e2ng cao t\u00ednh n\u0103ng ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1eb7c \u0111i\u1ec3m, \u0111i\u1ec1u ki\u1ec7n Vi\u1ec7t Nam. K\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m b\u01b0\u1edbc \u0111\u1ea7u cho th\u1ea5y, B\u1eaby \u0111\u00e8n \u0111a t\u00ednh n\u0103ng c\u00f3 ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng r\u1ed9ng, k\u1ec3 c\u1ea3 n\u01a1i kh\u00f4ng c\u00f3 \u0111i\u1ec7n l\u01b0\u1edbi, kh\u1ea3 n\u0103ng thu b\u1eaft tr\u01b0\u1edfng th\u00e0nh v\u00e0 di\u1ec7t cao h\u01a1n so v\u1edbi c\u00e1c b\u1eaby \u0111\u00e8n \u0111ang s\u1eed d\u1ee5ng \u1edf Vi\u1ec7t Nam t\u1eeb 1,5 \u0111\u1ebfn 3,2 l\u1ea7n v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i v\u00e0 t\u1eeb 4,2 \u0111\u1ebfn 4,6 l\u1ea7n v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng tr\u01b0\u1edfng th\u00e0nh, \u0111i\u1ec1u khi\u1ec3n ho\u1ea1t \u0111\u1ed9ng t\u1ef1 \u0111\u1ed9ng h\u1eb9n gi\u1edd v\u00e0 t\u1eeb xa qua k\u1ebft n\u1ed1i v\u1edbi \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, s\u1eed d\u1ee5ng thu\u1eadn ti\u1ec7n, an to\u00e0n c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n \u0111\u1ed3i n\u00fai v\u00e0 \u0111\u1ed3ng b\u1eb1ng, th\u1eddi ti\u1ebft \u1ea9m \u01b0\u1edbt v\u00e0 m\u01b0a gi\u00f4ng b\u1ea5t th\u01b0\u1eddng, \u0111\u00e1p \u1ee9ng k\u1ecbp th\u1eddi y\u00eau c\u1ea7u s\u1ea3n xu\u1ea5t n\u00f4ng l\u00e2m nghi\u1ec7p.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1eaby \u0111\u00e8n \u0111a t\u00ednh n\u0103ng, c\u00f4n tr\u00f9ng h\u1ea1i, \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng v\u00e0 t\u1eeb xa, ph\u00f3ng \u0111i\u1ec7n cao \u00e1p<\/p>\n

<\/a>MULTI-FUNCTION LIGHT TRAP IN PREVENTING INSECT PESTS ASSOCIATED WITH AGRICULTURAL CROPS AND FOREST TREES<\/p>\n

Le Xuan Phuc1<\/sup>, Dao Ngoc Quang2<\/sup>, Cao Chi Cong1<\/sup><\/p>\n

1 <\/sup>Forest Industry Research Institute
\n2 <\/sup>Forest Protection Research Centre<\/p>\n

SUMMARY<\/p>\n

Using light traps is a method of catching moths and actively destroying the insect’s egg-laying source. The multi-function light trap is a product that inherits and develops from the existing improved light trap, applying new advanced techniques and improving the structure, enhancing features suitable for Vietnam’s conditions. Initial results show that the multi-purpose light trap has a wide operating range, even in places without mains electricity, and is much more capable of attracting moths than the light traps currently used in Vietnam in terms of both number of moths (4.2 to 4.6 times) and number of insect pest species (1.5 to 3.2 times); automatic control, timer and remote control via connection to mobile phone; safe; convenient; easy to move on mountain roads and large fields, wet weather and unusual thunderstorms conditions, meeting the requirements of large-scale specialized agricultural and forestry production.<\/p>\n

Keywords:<\/em> <\/strong>Multi-function light trap, insect pests, automatic and remote control system, high voltage discharge<\/p>\n

 <\/p>\n

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

<\/a>C\u01a0 S\u1ede L\u00dd LU\u1eacN V\u00c0 TH\u1ef0C TI\u1ec4N V\u1ec0 B\u1ea2O HI\u1ec2M R\u1eeaNG
\n– NH\u1eeeNG \u0110\u1ecaNH H\u01af\u1edaNG V\u1ec0 CH\u00cdNH S\u00c1CH B\u1ea2O HI\u1ec2M R\u1eeaNG
\n\u1ede VI\u1ec6T NAM<\/p>\n

<\/a>Ph\u1ea1m Th\u1ecb Luy\u1ec7n, Nguy\u1ec5n Ti\u1ebfn H\u1ea3i<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u Kinh t\u1ebf L\u00e2m nghi\u1ec7p<\/p>\n

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

B\u00e0i b\u00e1o h\u1ec7 th\u1ed1ng h\u00f3a c\u01a1 s\u1edf l\u00fd lu\u1eadn v\u1ec1 b\u1ea3o hi\u1ec3m r\u1eebng v\u00e0 t\u1ed5ng k\u1ebft kinh nghi\u1ec7m th\u1ef1c ti\u1ec5n c\u1ee7a m\u1ed9t s\u1ed1 n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi v\u1ec1 b\u1ea3o hi\u1ec3m r\u1eebng. K\u1ebft qu\u1ea3 h\u1ec7 th\u1ed1ng h\u00f3a c\u01a1 s\u1edf l\u00fd lu\u1eadn v\u1ec1 b\u1ea3o hi\u1ec3m r\u1eebng \u0111\u00e3 \u0111\u01b0a ra \u0111\u01b0\u1ee3c c\u00e1c lo\u1ea1i r\u1ee7i ro c\u01a1 b\u1ea3n \u0111\u1ed1i v\u1edbi r\u1eebng, c\u00e1c lo\u1ea1i h\u00ecnh v\u00e0 c\u00e1c \u0111\u1eb7c tr\u01b0ng li\u00ean quan \u0111\u1ebfn b\u1ea3o hi\u1ec3m r\u1eebng, c\u00e1ch t\u00ednh ph\u00ed b\u1ea3o hi\u1ec3m. B\u1ea3o hi\u1ec3m r\u1eebng \u0111\u01b0\u1ee3c s\u1ef1 quan t\u00e2m c\u1ee7a nhi\u1ec1u n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi v\u00e0 \u0111\u00e3 mang l\u1ea1i nhi\u1ec1u t\u00e1c \u0111\u1ed9ng t\u00edch c\u1ef1c cho ng\u01b0\u1eddi tr\u1ed3ng r\u1eebng khi r\u1ee7i ro x\u1ea3y ra. Kinh nghi\u1ec7m th\u1ef1c ti\u1ec5n tri\u1ec3n khai ch\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m r\u1eebng tr\u1ed3ng c\u1ee7a c\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi c\u0169ng \u0111\u00e3 cho th\u1ea5y \u0111\u01b0\u1ee3c vai tr\u00f2 c\u1ee7a Nh\u00e0 n\u01b0\u1edbc trong tri\u1ec3n khai ch\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m r\u1eebng. T\u1eeb \u0111\u00f3, nghi\u00ean c\u1ee9u \u0111\u01b0a ra nh\u1eefng b\u00e0i h\u1ecdc kinh nghi\u1ec7m v\u00e0 nh\u1eefng \u0111\u1ecbnh h\u01b0\u1edbng cho x\u00e2y d\u1ef1ng v\u00e0 tri\u1ec3n khai ch\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m r\u1eebng \u1edf Vi\u1ec7t Nam trong th\u1eddi gian t\u1edbi. Theo \u0111\u00f3, Nh\u00e0 n\u01b0\u1edbc \u0111\u01b0\u1ee3c xem nh\u01b0 m\u1ed9t ch\u1ee7 th\u1ec3 quan tr\u1ecdng trong th\u1ef1c hi\u1ec7n b\u1ea3o hi\u1ec3m r\u1eebng. M\u1ed9t s\u1ed1 g\u1ee3i \u00fd ch\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m r\u1eebng trong th\u1eddi gian t\u1edbi l\u00e0: x\u00e2y d\u1ef1ng ch\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m r\u1eebng tr\u1ed3ng, th\u1ef1c hi\u1ec7n th\u00ed \u0111i\u1ec3m b\u1ea3o hi\u1ec3m r\u1eebng tr\u1ed3ng. Vi\u1ec7c th\u00ed \u0111i\u1ec3m t\u1eadp trung v\u00e0o lo\u1ea1i r\u1ee7i ro ch\u00ednh (b\u00e3o l\u0169), cho lo\u00e0i c\u00e2y r\u1eebng tr\u1ed3ng ph\u1ed5 bi\u1ebfn (keo) c\u1ee7a r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t. Nh\u00e0 n\u01b0\u1edbc h\u1ed7 tr\u1ee3 ph\u00ed b\u1ea3o hi\u1ec3m trong giai \u0111o\u1ea1n \u0111\u1ea7u tri\u1ec3n khai. B\u00ean c\u1ea1nh \u0111\u00f3, th\u1ef1c hi\u1ec7n tuy\u00ean truy\u1ec1n n\u00e2ng cao nh\u1eadn th\u1ee9c c\u1ee7a ng\u01b0\u1eddi d\u00e2n v\u1ec1 b\u1ea3o hi\u1ec3m r\u1eebng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>B\u1ea3o hi\u1ec3m r\u1eebng, ch\u00ednh s\u00e1ch, r\u1ee7i ro, r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t<\/p>\n

<\/a>THEORETICAL AND PRACTICAL BASIS OF FOREST INSURANCE – ORIENTATIONS
\nFOR FOREST INSURANCE POLICY IN VIETNAM<\/p>\n

Pham Thi Luyen, Nguyen Tien Hai<\/p>\n

Forestry Economics Research Centre<\/p>\n

SUMMARY<\/p>\n

The article has systematized the theoretical basis of forest insurance and summarized the practical experience of some countries around the world on forest insurance. The results of systematizing the theoretical basis for forest insurance have shown the basic types of risks to forests, types and characteristics related to forest insurance, and how to calculate insurance premiums. Forest insurance has also received attention from many countries around the world and has brought many positive impacts to forest growers when risks occur. Practical experience in implementing planted forest insurance policies of countries around the world has also shown the role of the state in implementing forest insurance policies. Since then, the study has provided lessons learned and directions for developing and implementing forest insurance policies in Vietnam in the future. Accordingly, the State is considered an important subject in implementing forest insurance. Some suggestions for forest insurance policy in the near future are: developing a planted forest insurance policy and performing piloting planted forest insurance. The pilot focuses on the main type of risk (storms and floods), for a common plantation tree species (acacia) in production forests. The State supports insurance fees in the first phase of implementation. In addition, carry out propaganda to raise people’s awareness about forest insurance.<\/p>\n

Keywords:<\/em> <\/strong>Forest insurance, policy, risk, production forests<\/p>\n

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

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

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 6 – 2023 1. Bi\u1ebfn d\u1ecb di truy\u1ec1n v\u1ec1 sinh tr\u01b0\u1edfng, \u0111\u1ed9 th\u1eb3ng th\u00e2n v\u00e0 c\u00e0nh nh\u1ecf c\u1ee7a lo\u00e0i Keo l\u00e1 tr\u00e0m (Acacia auriculiformis) trong kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf t\u1ea1i \u0110\u1ed3ng Ph\u00fa, B\u00ecnh Ph\u01b0\u1edbc Genetic variation, stem straightness and brach thickness of Acacia auriculiformis in progeny trial in […]<\/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\/1457"}],"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=1457"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1457\/revisions"}],"predecessor-version":[{"id":1460,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1457\/revisions\/1460"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}