{"id":1523,"date":"2016-11-22T15:14:00","date_gmt":"2016-11-22T08:14:00","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=1523"},"modified":"2023-11-23T12:25:57","modified_gmt":"2023-11-23T05:25:57","slug":"vietnam-journal-of-forest-science-number-3-2016","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2016\/11\/vietnam-journal-of-forest-science-number-3-2016\/","title":{"rendered":"Vietnam Journal of Forest Science Number 3-2016"},"content":{"rendered":"

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

\n

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 3 – 2016<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1<\/td>\n\n

Nh\u00e2n gi\u1ed1ng in vitro<\/i> c\u00e1c gia \u0111\u00ecnh \u01b0u vi\u1ec7t Keo l\u00e1 li\u1ec1m (Acacia crassicarpa<\/i> A. Cunn. Ex Benth.) ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng<\/p>\n<\/td>\n

\n

Ph\u00ed H\u1ed3ng H\u1ea3i
\nV\u0103n Thu Huy\u1ec1n<\/p>\n<\/td>\n

\n

In vitro propagation for superior families of Acacia crassicarpa<\/i> A. Cunn. Ex Benth. providing for clonal family forestry<\/p>\n<\/td>\n

\n

4431<\/p>\n<\/td>\n<\/tr>\n

2<\/td>\n\n

\u0110a d\u1ea1ng th\u00e0nh ph\u1ea7n lo\u00e0i v\u00e0 th\u1ea3m th\u1ef1c v\u1eadt \u1edf t\u1ec9nh
\nB\u1ea1c Li\u00eau<\/p>\n<\/td>\n

\n

\u0110\u1eb7ng V\u0103n S\u01a1n
\nNguy\u1ec5n Th\u1ecb Mai H\u01b0\u01a1ng Nguy\u1ec5n L\u00ea Tuy\u1ebft Dung<\/p>\n<\/td>\n

\n

Diversity of species composition and vegetation in Bac Lieu province<\/p>\n<\/td>\n

\n

4441<\/p>\n<\/td>\n<\/tr>\n

3<\/td>\n\n

\u0110i\u1ec1u tra nghi\u00ean c\u1ee9u khu h\u1ec7 Lan (Orchidaceae) t\u1ea1i V\u01b0\u1eddn qu\u1ed1c gia C\u00e1t Ti\u00ean<\/p>\n<\/td>\n

\n

V\u0169 Kim C\u00f4ng
\nN\u00f4ng V\u0103n Duy
\nTr\u1ea7n Th\u00e1i Vinh
\nH\u2019Yon Ni\u00ea Bing
\nQu\u00e1ch V\u0103n H\u1ee3i
\n\u0110\u1eb7ng Th\u1ecb Th\u1eafm<\/p>\n<\/td>\n

\n

Investigation of distribution of the orchidaceae in Cat Tien National Park<\/p>\n<\/td>\n

\n

4450<\/p>\n<\/td>\n<\/tr>\n

4<\/td>\n\n

Nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac l\u00e2m ph\u1ea7n c\u00f3 ph\u00e2n b\u1ed1 Xoan nh\u1eeb Choerospondias axillaris<\/i> (Roxb.) Burtt et Hill<\/p>\n<\/td>\n

\n

L\u1ea1i Thanh H\u1ea3i<\/p>\n<\/td>\n

\n

Study on the characteristic of forest with distribution of Choerospondias axillaris <\/i>(Roxb.) Burtt et Hill<\/p>\n<\/td>\n

\n

4455<\/p>\n<\/td>\n<\/tr>\n

5<\/td>\n\n

\u0110\u1eb7c \u0111i\u1ec3m t\u00e1i sinh t\u1ef1 nhi\u00ean m\u1ed9t s\u1ed1 lo\u00e0i \u01b0u th\u1ebf r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh t\u1ea1i V\u01b0\u1eddn qu\u1ed1c gia Xu\u00e2n S\u01a1n, t\u1ec9nh Ph\u00fa Th\u1ecd<\/p>\n<\/td>\n

\n

Nguy\u1ec5n \u0110\u1eafc Tri\u1ec3n
\nTr\u1ea7n V\u0103n Con
\nNg\u00f4 Th\u1ebf Long
\nNg\u00f4 Ng\u1ecdc Tuy\u00ean<\/p>\n<\/td>\n

\n

Natural regeneration characteristics of some dominant tree species of broardleaf evergreen forests in Xuan Son National Park, Phu Tho province<\/p>\n<\/td>\n

\n

4461<\/p>\n<\/td>\n<\/tr>\n

6<\/td>\n\n

M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac theo nh\u00f3m g\u1ed7 v\u00e0 c\u1ea5p k\u00ednh c\u1ee7a r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh \u1edf huy\u1ec7n B\u1ea3o L\u00e2m, t\u1ec9nh L\u00e2m \u0110\u1ed3ng<\/p>\n<\/td>\n

\n

\u0110\u1eb7ng V\u0103n Thuy\u1ebft<\/p>\n<\/td>\n

\n

Some structural and timber class features of evergreen broadleaf forest in Bao Lam district, Lam Dong province<\/p>\n<\/td>\n

\n

4469<\/p>\n<\/td>\n<\/tr>\n

7<\/td>\n\n

Sinh tr\u01b0\u1edfng m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng t\u1ea1i S\u00f3c S\u01a1n, H\u00e0 N\u1ed9i<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Minh Thanh
\nT\u1ea1 Duy Long<\/p>\n<\/td>\n

\n

Eveluating the growth rates of some natives species under the forest canopy in Soc Son, Ha Noi<\/p>\n<\/td>\n

\n

4482<\/p>\n<\/td>\n<\/tr>\n

8<\/td>\n\n

Kh\u1ea3 n\u0103ng cung c\u1ea5p g\u1ed7 l\u1edbn c\u1ee7a r\u1eebng keo lai 13,5 tu\u1ed5i tr\u1ed3ng \u1edf Qu\u1ea3ng Tr\u1ecb<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Huy S\u01a1n
\nPh\u1ea1m Xu\u00e2n \u0110\u1ec9nh<\/p>\n<\/td>\n

\n

Potential of sawlog production of the 13.5 year-old Acacia hybrid in Quang Tri province<\/p>\n<\/td>\n

\n

4490<\/p>\n<\/td>\n<\/tr>\n

9<\/td>\n\n

Gi\u00e1m s\u00e1t carbon r\u1eebng c\u00f3 s\u1ef1 tham gia c\u1ee7a c\u1ed9ng \u0111\u1ed3ng \u0111\u1ecba ph\u01b0\u01a1ng – K\u1ebft qu\u1ea3 \u0111\u1ea1t \u0111\u01b0\u1ee3c v\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 \u0111\u1eb7t ra c\u1ea7n gi\u1ea3i quy\u1ebft<\/p>\n<\/td>\n

\n

Ph\u1ea1m Tu\u1ea5n Anh
\nB\u1ea3o Huy<\/p>\n<\/td>\n

\n

Participatory carbon monitoring – the achievements and the issues raised need to be addressed<\/p>\n<\/td>\n

\n

4498<\/p>\n<\/td>\n<\/tr>\n

10<\/td>\n\n

Ph\u00e2n chia v\u00e0 ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng trong ph\u00e2n t\u00edch v\u00e0 qu\u1ea3n l\u00fd l\u1eadp \u0111\u1ecba b\u00e1n ng\u1eadp t\u1ec9nh B\u00ecnh Ph\u01b0\u1edbc<\/p>\n<\/td>\n

\n

Tr\u1ea7n Qu\u1ed1c Ho\u00e0n<\/p>\n<\/td>\n

\n

Division and application development for analysis and management the submerged site map in Binh Phuoc provinve<\/p>\n<\/td>\n

\n

4513<\/p>\n<\/td>\n<\/tr>\n

11<\/td>\n\n

\u1ee8ng d\u1ee5ng GIS v\u00e0 \u1ea3nh Landsat \u0111a th\u1eddi gian x\u00e2y d\u1ef1ng b\u1ea3n \u0111\u1ed3 bi\u1ebfn \u0111\u1ed9ng di\u1ec7n t\u00edch r\u1eebng t\u1ea1i x\u00e3 v\u00f9ng \u0111\u1ec7m Xu\u00e2n \u0110\u00e0i v\u00e0 Kim Th\u01b0\u1ee3ng, V\u01b0\u1eddn qu\u1ed1c gia Xu\u00e2n S\u01a1n<\/p>\n<\/td>\n

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Nguy\u1ec5n H\u1ea3i H\u00f2a
\nNguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n
\nL\u01b0\u01a1ng Th\u1ecb Thu Trang<\/p>\n<\/td>\n

\n

Applications of GIS and multi – temporal Landsat imageries to quantify changes in extents of forest land in Xuan Dai and Kim Thuong buffer zones, Xuan Son National Park<\/p>\n<\/td>\n

\n

4524<\/p>\n<\/td>\n<\/tr>\n

12<\/td>\n\n

Nghi\u00ean c\u1ee9u x\u00e2y d\u1ef1ng ph\u1ea7n m\u1ec1m t\u1ef1 \u0111\u1ed9ng ph\u00e1t hi\u1ec7n s\u1edbm ch\u00e1y r\u1eebng t\u1eeb tr\u1ea1m quan tr\u1eafc m\u1eb7t \u0111\u1ea5t<\/p>\n<\/td>\n

\n

Tr\u1ea7n Quang B\u1ea3o
\nNguy\u1ec5n Tr\u1ecdng C\u01b0\u01a1ng
\nL\u00ea Ng\u1ecdc Ho\u00e0n
\nMai H\u00e0 An<\/p>\n<\/td>\n

\n

Designing an application software for early automatic detection of forest fires from ground monitoring station<\/p>\n<\/td>\n

\n

4538<\/p>\n<\/td>\n<\/tr>\n

13<\/td>\n\n

Nghi\u00ean c\u1ee9u ph\u00f2ng tr\u1eeb S\u00e2u \u0111o (Biston suppressaria<\/i>) \u0103n l\u00e1 Keo tai t\u01b0\u1ee3ng trong ph\u00f2ng th\u00ed nghi\u1ec7m<\/p>\n<\/td>\n

\n

B\u00f9i Quang Ti\u1ebfp
\nNguy\u1ec5n Minh Ch\u00ed
\nNguy\u1ec5n M\u1ea1nh H\u00e0
\nL\u00ea V\u0103n B\u00ecnh<\/p>\n<\/td>\n

\n

Study of control on leaf – eating looper caterpillar (Biston suppressaria<\/i> Guen\u00e9e) damaging to Acacia mangium<\/i> in the laboratory<\/p>\n<\/td>\n

\n

4547<\/p>\n<\/td>\n<\/tr>\n

14<\/td>\n\n

Vi ph\u1ea1m l\u00e2m lu\u1eadt trong qu\u1ea3n l\u00fd b\u1ea3o v\u1ec7 r\u1eebng \u0111\u1eb7c d\u1ee5ng khu v\u1ef1c T\u00e2y B\u1eafc
\nVi\u1ec7t Nam<\/p>\n<\/td>\n

\n

Nguy\u1ec5n B\u00e1 Ng\u00e3i
\n\u0110\u1ed7 Anh Tu\u00e2n
\nV\u0169 Th\u1ecb B\u00edch Thu\u1eadn<\/p>\n<\/td>\n

\n

Forest law violations in the management of special forest protection area Northwest Vietnam<\/p>\n<\/td>\n

\n

4554<\/p>\n<\/td>\n<\/tr>\n

15<\/td>\n\n

\u0110\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean c\u1ee7a g\u1ed7 Th\u1ecb (Diospyros decandra<\/i> Lour) l\u00e0m m\u1ed9c b\u1ea3n t\u1ea1i ch\u00f9a B\u1ed5 \u0110\u00e0 v\u00e0 ch\u00f9a V\u0129nh Nghi\u00eam, t\u1ec9nh B\u1eafc Giang<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc B\u00f9i Th\u1ecb Th\u1ee7y
\nHo\u00e0ng Th\u1ecb T\u00e1m<\/p>\n<\/td>\n

\n

Natural durability of wood of Diospyros decandra<\/i> Lour used for making woodblocks in Bo Da and Vinh Nghiem pagoda in Bac Giang province<\/p>\n<\/td>\n

\n

4564<\/p>\n<\/td>\n<\/tr>\n

16<\/td>\n\n

M\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t ch\u1ee7 y\u1ebfu c\u1ee7a g\u1ed7 Th\u1ecb (Diospyros decandra<\/i> Lour) d\u00f9ng l\u00e0m m\u1ed9c b\u1ea3n l\u01b0u gi\u1eef t\u1ea1i ch\u00f9a B\u1ed5 \u0110\u00e0 v\u00e0 ch\u00f9a V\u0129nh Nghi\u00eam t\u1ec9nh B\u1eafc Giang<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc Nguy\u1ec5n T\u1eed Kim
\nL\u00ea Qu\u00fd Th\u1eafng
\nNguy\u1ec5n Th\u1ecb Tr\u1ecbnh
\nNguy\u1ec5n Tr\u1ecdng Ngh\u0129a<\/p>\n<\/td>\n

\n

Some properties of wood of Diospyros decandra<\/i> Lour used for making woodblocks conserved at Bo Da and Vinh Nghiem pagodas in Bac Giang province<\/p>\n<\/td>\n

\n

4572<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NH\u00c2N GI\u1ed0NG in vitro<\/i> C\u00c1C GIA \u0110\u00ccNH \u01afU VI\u1ec6T KEO L\u00c1 LI\u1ec0M (Acacia crassicarpa <\/i>A. Cunn. ex Benth.) PH\u1ee4C V\u1ee4 TR\u1ed2NG R\u1eeaNG<\/strong><\/p>\n

Ph\u00ed H\u1ed3ng H\u1ea3i1<\/sup>, V\u0103n Thu Huy\u1ec1n2
\n<\/sup>1<\/sup><\/i>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/i><\/p>\n<\/div>\n

\u00a0<\/b><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTTr\u1ed3ng r\u1eebng v\u00f4 t\u00ednh theo gia \u0111\u00ecnh (CFF – Clonal Family Forestry) cho Keo l\u00e1 li\u1ec1m \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng th\u00e0nh c\u00f4ng \u1edf Indonesia, \u0111\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p nh\u1eb1m nh\u00e2n gi\u1ed1ng sinh d\u01b0\u1ee1ng h\u00e0ng lo\u1ea1t c\u00e1c c\u00e1 th\u1ec3 \u01b0u vi\u1ec7t trong c\u00e1c gia \u0111\u00ecnh \u01b0u vi\u1ec7t, kh\u00f4ng gi\u1eef l\u1ea1i d\u00f2ng v\u00f4 t\u00ednh \u0111\u1ed3ng nh\u1ea5t. \u1ee8ng d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, nghi\u00ean c\u1ee9u v\u1ec1 nh\u00e2n gi\u1ed1ng cho 5 gia \u0111\u00ecnh \u01b0u vi\u1ec7t Keo l\u00e1 li\u1ec1m trong v\u01b0\u1eddn gi\u1ed1ng th\u1ebf h\u1ec7 2 t\u1ea1i Qu\u1ea3ng Tr\u1ecb v\u00e0 B\u00ecnh Thu\u1eadn b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nu\u00f4i c\u1ea5y m\u00f4 t\u1ebf b\u00e0o \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh. H\u1ea1t gi\u1ed1ng \u0111\u01b0\u1ee3c r\u1eeda d\u01b0\u1edbi v\u00f2i n\u01b0\u1edbc ch\u1ea3y trong 3 – 5 ph\u00fat, sau \u0111\u00f3 r\u1eeda b\u1eb1ng n\u01b0\u1edbc x\u00e0 ph\u00f2ng lo\u00e3ng, tr\u00e1ng v\u1edbi n\u01b0\u1edbc c\u1ea5t v\u00f4 tr\u00f9ng 3 – 5 l\u1ea7n, \u0111un trong n\u01b0\u1edbc s\u00f4i 1 ph\u00fat, sau \u0111\u00f3 ng\u00e2m trong HgCl2<\/sub> \u1edf 2 n\u1ed3ng \u0111\u1ed9 (0,05% trong th\u1eddi gian 7 ph\u00fat ho\u1eb7c 0,1% trong th\u1eddi gian 5 ph\u00fat. Cu\u1ed1i c\u00f9ng l\u00e0 tr\u00e1ng b\u1eb1ng n\u01b0\u1edbc c\u1ea5t v\u00f4 tr\u00f9ng 3 – 5 l\u1ea7n. H\u1ea1t \u0111\u00e3 kh\u1eed tr\u00f9ng \u0111\u01b0\u1ee3c c\u1ea5y v\u00e0o m\u00f4i tr\u01b0\u1eddng MS* (MS c\u1ea3i ti\u1ebfn) c\u00f3 b\u1ed5 sung 4,5 g\/L Agar v\u00e0 30 g\/L \u0110\u01b0\u1eddng sucrose. K\u1ebft qu\u1ea3 cho th\u1ea5y c\u00f3 t\u1edbi 23,3% m\u1eabu n\u1ea3y m\u1ea7m. M\u00f4i tr\u01b0\u1eddng MS* b\u1ed5 sung 1,5 mg\/L BAP c\u00f9ng 2 mg\/L NAA v\u00e0 2,0g\/L Than ho\u1ea1t t\u00ednh cho 8,9 ch\u1ed3i\/c\u1ee5m v\u00e0 t\u1ef7 l\u1ec7 ch\u1ed3i h\u1eefu hi\u1ec7u l\u00e0 42,8%. M\u00f4i tr\u01b0\u1eddng ra r\u1ec5 th\u00edch h\u1ee3p l\u00e0 1\/2MS* b\u1ed5 sung 1,0 mg\/L IBA (t\u1ef7 l\u1ec7 ra r\u1ec5 \u0111\u1ea1t 83,2%). \u0110\u1ed1i v\u1edbi Keo l\u00e1 li\u1ec1m ch\u1ec9 n\u00ean nh\u00e2n ch\u1ed3i \u0111\u1ebfn v\u00f2ng th\u1ee9 7, m\u1ed7i v\u00f2ng 25 ng\u00e0y, sau \u0111\u00f3 h\u1ee7y m\u1eabu. Th\u00f4ng th\u01b0\u1eddng, sau 7 l\u1ea7n c\u1ea5y chuy\u1ec3n t\u1eeb 1 h\u1ea1t Keo l\u00e1 li\u1ec1m c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o \u0111\u01b0\u1ee3c kho\u1ea3ng 2.453 c\u00e2y con (nu\u00f4i d\u01b0\u1ee1ng \u1edf giai \u0111o\u1ea1n 3 th\u00e1ng tu\u1ed5i).<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>Gia \u0111\u00ecnh \u01b0u tr\u1ed9i, gi\u00e0 h\u00f3a, Keo l\u00e1 li\u1ec1m, nh\u00e2n gi\u1ed1ng sinh d\u01b0\u1ee1ng, tr\u1ed3ng r\u1eebng gia \u0111\u00ecnh d\u00f2ng v\u00f4 t\u00ednh<\/td>\n<\/tr>\n

In vitro<\/i> propagation for superior families of Acacia crassicarpa <\/i>A. Cunn. ex Benth. providing for Clonal Family <\/strong><\/p>\n

ForestryClonal Family Forestry (CFF) was applied successfully for Acacia crassicarpa <\/i>in Indonesia, which is a method using vegetative propagation methods to multiply the seedlings from superior individual trees within superior family, without retention of individual clone identities. This study on tissue culture propagation for 5 superior families of Acacia <\/i>crassicarpa <\/i>in the second generation seed orchard have been conducted as CFF method. Acacia <\/i>crassicarpa <\/i>seeds were washed thoroughly under running tap water for 3 – 5 minutes then cleaned with soap solution. Seeds were washed 3 to 5 times with sterile distilled water and were treated to break dormancy by hot water for 1 minutes. The seeds were then treated with 0.1% HgCl2<\/sub> for 5 minutes or 0.05% HgCl2<\/sub> for 7 minutes. Finally, the seeds were washed 3 to 5 times with sterile distilled water and were placed in culture bottle containing hor\u00admone free MS* medium pre\u00adpared with 30 g\/L sucrose and 4.5g\/L agar. The pH of the medium was adjusted to 5.8 before autoclaving at 121\u00b0C for 20 minutes at 1.2 kg\/cm2<\/sup> pressure. The result achieved 23.3% of germination. The medium MS* + 1.5 mg\/L BAP + 2.0 mg\/L NAA + 2.0 g\/L activated charcoal was sucessfully used for inducing the adventitious shoots with maximum 8,9 shoots per clump, which equals to average multiplication rate of 4.3 and adventitious shoot percentage of 42.8%. The best rooting responses were observed in the medium 1\/2MS* supplemented with 1.0mg\/L IBA and the rooting rate reached to 83.2%. At 7 subcultures (25 days per cycle), the ontogenetic ageing of explants will appear. Using the micropropagation technique, an estimated 2453 plantlets (3 months) could be produced from a single seed after 7 subcultures.<\/p>\n

Keywords:<\/i><\/b> <\/i>Superior families, ontogenetic ageing, Acacia crassicarpa, <\/i>vegetative propagation, clonal family forestry<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110A D\u1ea0NG TH\u00c0NH PH\u1ea6N LO\u00c0I V\u00c0 TH\u1ea2M TH\u1ef0C V\u1eacT \u1ede T\u1ec8NH B\u1ea0C LI\u00caU<\/strong><\/p>\n

\u0110\u1eb7ng V\u0103n S\u01a1n1<\/sup>, Nguy\u1ec5n Th\u1ecb Mai H\u01b0\u01a1ng1<\/sup>, Nguy\u1ec5n L\u00ea Tuy\u1ebft Dung2
\n<\/sup>1<\/sup><\/i>Vi\u1ec7n Sinh h\u1ecdc nhi\u1ec7t \u0111\u1edbi, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam
\n2<\/sup>Tr\u01b0\u1eddng Cao \u0111\u1eb3ng Y t\u1ebf B\u1ea1c Li\u00eau, t\u1ec9nh B\u1ea1c Li\u00eau<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u1edf B\u1ea1c Li\u00eau c\u00f3 441 lo\u00e0i, 324 chi, 114 h\u1ecd c\u1ee7a 3 ng\u00e0nh th\u1ef1c v\u1eadt b\u1eadc cao c\u00f3 m\u1ea1ch l\u00e0 ng\u00e0nh D\u01b0\u01a1ng x\u1ec9 (Polypodiophyta), ng\u00e0nh H\u1ea1t tr\u1ea7n (Pinophyta) v\u00e0 ng\u00e0nh H\u1ea1t k\u00edn (Magnoliophyta). T\u00e0i nguy\u00ean th\u1ef1c v\u1eadt c\u00f3 \u00edch c\u0169ng \u0111\u01b0\u1ee3c th\u1ed1ng k\u00ea, trong \u0111\u00f3 c\u00f3 271 lo\u00e0i c\u00f3 gi\u00e1 tr\u1ecb l\u00e0m thu\u1ed1c, 71 lo\u00e0i l\u00e0m c\u1ea3nh, 42 lo\u00e0i l\u00e0m th\u1ef1c ph\u1ea9m, 22 lo\u00e0i cho g\u1ed7 v\u00e0 7 lo\u00e0i l\u00e0m gia d\u1ee5ng. \u0110\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 3 lo\u00e0i th\u1ef1c v\u1eadt c\u00f3 gi\u00e1 tr\u1ecb b\u1ea3o t\u1ed3n theo s\u00e1ch \u0110\u1ecf Vi\u1ec7t Nam (2007) v\u00e0 Ngh\u1ecb \u0111\u1ecbnh s\u1ed1 32\/2006\/N\u0110-CP c\u1ee7a Ch\u00ednh ph\u1ee7 l\u00e0 D\u00e1i ng\u1ef1a n\u01b0\u1edbc (Aglaia spectabilis<\/i>), Ch\u00f9m l\u00e9 (Azima sarmentosa<\/i>) v\u00e0 V\u1ea1n tu\u1ebf (Cycas revoluta<\/i>). D\u1ea1ng th\u00e2n c\u1ee7a th\u1ef1c v\u1eadt \u0111\u01b0\u1ee3c chia l\u00e0m 6 nh\u00f3m ch\u00ednh l\u00e0 c\u00e2y th\u00e2n th\u1ea3o c\u00f3 214 lo\u00e0i, c\u00e2y b\u1ee5i\/b\u1ee5i tr\u01b0\u1eddn c\u00f3 94 lo\u00e0i, d\u00e2y leo\/d\u00e2y leo h\u00f3a g\u1ed7 c\u00f3 50 lo\u00e0i, g\u1ed7 nh\u1ecf c\u00f3 46 lo\u00e0i, g\u1ed7 l\u1edbn c\u00f3 34 lo\u00e0i v\u00e0 b\u00e1n k\u00fd sinh c\u00f3 3 lo\u00e0i. \u0110\u1ed3ng th\u1eddi, ghi nh\u1eadn \u0111\u01b0\u1ee3c 6 ki\u1ec3u qu\u1ea7n h\u1ee3p th\u1ef1c v\u1eadt hi\u1ec7n di\u1ec7n \u1edf t\u1ec9nh B\u1ea1c Li\u00eau.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>B\u1ea1c Li\u00eau, \u0111a d\u1ea1ng th\u1ef1c v\u1eadt, th\u1ea3m th\u1ef1c v\u1eadt, th\u00e0nh ph\u1ea7n lo\u00e0i th\u1ef1c v\u1eadt.<\/td>\n<\/tr>\n

Diversity of species composition and vegetation in Bac Lieu province<\/strong><\/p>\n

The results of the study of species composition and vegetation in Bac Lieu Province recorded 441 species, 324 genera, 114 families that belonging to the three high – rank phyla of vascular plants including Lycopodiophyta<\/i>, Pinophyta<\/i> and Magnoliophyta<\/i>. The plant resources were divided into five groups as follows: (1) medicinal plants with 271 species, (2) ornamental plants with 71 species, 3) vegetables plants with 42 species, 4) wood plants with 22 species, and (5) household plants with 7 species. Besides, 3 species incluse Aglaia spectabilis<\/i>, Azima sarmentosa<\/i> and Cycas revoluta<\/i> were listed for conservation in the Vietnam Red Data Book (2007) and the Decision No 32\/2006\/N\u0110-CP. Life forms of plants were divided into six groups including herbs with 214 species, shrubs with 94 species, lianas with 50 species, small trees with 46 species, big trees with 34 species and hemiparasites with 3 species. Moreover, 6 plant communities were identified in Bac Lieu province.<\/p>\n

Key words:<\/i><\/b> Bac Lieu, Floral diversity, Species composition, Vegetation.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110I\u1ec0U TRA NGHI\u00caN C\u1ee8U KHU H\u1ec6 LAN (ORCHIDACEAE)T\u1ea0I V\u01af\u1edcN QU\u1ed0C GIA C\u00c1T TI\u00caN<\/strong><\/p>\n

V\u0169 Kim C\u00f4ng, N\u00f4ng V\u0103n Duy, Tr\u1ea7n Th\u00e1i Vinh, H\u2019Yon Ni\u00ea Bing,
\nQu\u00e1ch V\u0103n H\u1ee3i, \u0110\u1eb7ng Th\u1ecb Th\u1eafm
\nVi\u1ec7n Nghi\u00ean c\u1ee9u Khoa h\u1ecdc T\u00e2y Nguy\u00ean<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Trong qu\u00e1 tr\u00ecnh \u0111i\u1ec1u tra nghi\u00ean c\u1ee9u v\u1ec1 c\u00e1c lo\u00e0i thu\u1ed9c h\u1ecd Lan (Orchidaceae Juss.) \u1edf V\u01b0\u1eddn qu\u1ed1c gia C\u00e1t Ti\u00ean tr\u00ean di\u1ec7n t\u00edch 39.627ha, \u0111\u00e3 thu th\u1eadp m\u1eabu, m\u00f4 t\u1ea3 v\u00e0 \u0111\u1ecbnh danh \u0111\u01b0\u1ee3c 36 lo\u00e0i thu\u1ed9c 21 chi; trong \u0111\u00f3 c\u00f3 4 lo\u00e0i c\u00f3 t\u00ean trong S\u00e1ch \u0110\u1ecf Vi\u1ec7t Nam: \u1edf c\u1ea5p EN c\u00f3 1 lo\u00e0i l\u00e0 Dendrobium bilobulatum <\/i>Seidenf.; \u1edf c\u1ea5p VU g\u1ed3m c\u00f3 3 lo\u00e0i l\u00e0 Dendrobium farmeri <\/i>Paxt; Dendrobium draconis<\/i> Reichb. v\u00e0 Nervilia\u00a0aragoana<\/i>\u00a0Gaudich.Qu\u00e1 tr\u00ecnh kh\u1ea3o s\u00e1t c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean nh\u01b0 \u00e1nh s\u00e1ng, \u1ea9m \u0111\u1ed9, nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 cao v\u00e0o th\u00e1ng 2, 7 v\u00e0 11 n\u01a1i c\u00f3 36 lo\u00e0i lan ph\u00e2n b\u1ed1 \u0111\u00e3 cho th\u1ea5y ch\u00fang \u0111\u1ec1u c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n \u0111\u01b0\u1ee3c \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 23 – 34o<\/sup>C, \u00e1nh s\u00e1ng d\u01b0\u1edbi 1.000 lux, \u1ea9m \u0111\u1ed9 dao \u0111\u1ed9ng t\u1eeb 55 – 95%, \u0111\u1ed9 cao 100 – 200m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n. C\u00e1c lo\u00e0i lan trong V\u01b0\u1eddn qu\u1ed1c gia C\u00e1t Ti\u00ean t\u1eadp trung ch\u1ee7 y\u1ebfu l\u00e0 \u1edf r\u1eebng la\u0301 r\u00f4\u0323ng th\u01b0\u1eddng xanh, n\u01a1i c\u00f3 s\u1ef1 \u0111a d\u1ea1ng v\u1ec1 c\u00e1c lo\u00e0i c\u00e2y, trong khi nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u1ea9m \u0111\u1ed9 \u00edt thay \u0111\u1ed5i trong n\u0103m.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> H\u1ecd Lan, V\u01b0\u1eddn Qu\u1ed1c gia C\u00e1t Ti\u00ean<\/td>\n<\/tr>\n

Investigation of distribution of the orchidaceae in Cat Tien National Park<\/strong><\/p>\n

During investigating the distribution of the species of Orchidaceae in Cat Tien National Park in a range of 39.627 hectares, 36 species of 21 genera have been identified, of which 4 species could be found in Plant Red Data Book of Viet Nam such as: Dendrobium bilobulatum <\/i>Seidenf. at EN category, while Dendrobium farmeri <\/i>Paxt, Dendrobium draconis<\/i> Reichb. and Nervilia\u00a0aragoana<\/i>\u00a0Gaudich at VU category.The survey also showed that these orchid species growing in an altitude between 100 and 200 meters above sea level, and they were mostly distributed from 135 to 175 meters. The light intensity, temperature and humidity measured below the canopy of the Orchidaceae were 1.000 lux, 23 – 34o<\/sup>C and 55 – 95%, respectively. Orchid plants usually grow in broad – leaved evergreen forests with high diversity of plant species while temperature and moisture less changed.<\/p>\n

Keywords: <\/i><\/b>orchidaceae, Cat Tien National Park<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NGHI\u00caN C\u1ee8U \u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U TR\u00daC L\u00c2M PH\u1ea6N C\u00d3 PH\u00c2N B\u1ed0 XOAN NH\u1eea Choerospondias axillaris<\/i> (Roxb.) Burtt et Hill<\/strong><\/p>\n

L\u1ea1i Thanh H\u1ea3i
\nVi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Xoan nh\u1eeb l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn sinh tr\u01b0\u1edfng nhanh, c\u00f3 ph\u00e2n b\u1ed1 r\u1ed9ng. G\u1ed7 thu\u1ed9c nh\u00f3m VI, g\u1ed7 kh\u00f4ng cong v\u00eanh, l\u00f5i d\u00e1c m\u00e0u s\u1eafc \u0111\u1eb9p, d\u1ec5 gia c\u00f4ng d\u00f9ng l\u00e0m \u0111\u1ed3 gia d\u1ee5ng. Xoan nh\u1eeb r\u1ea5t th\u00edch h\u1ee3p \u0111\u1ec3 b\u1ed5 sung v\u00e0o danh m\u1ee5c c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn. Trong c\u1ea5u tr\u00fac r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 Xoan nh\u1eeb ph\u00e2n b\u1ed1 th\u00ec lo\u00e0i n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 lo\u00e0i chi\u1ebfm \u01b0u th\u1ebf sinh th\u00e1i (IV% dao \u0111\u1ed9ng 1,2 – 6,0%). Xoan nh\u1eeb h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f3 m\u1eb7t \u1edf t\u1ea7ng A3 do \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i lo\u00e0i l\u00e0 c\u00e2y \u01b0a s\u00e1ng khi c\u00f2n nh\u1ecf.<\/p>\n

T<\/em><\/strong>\u1eeb kh\u00f3a:<\/i><\/b> <\/i>Xoan nh\u1eeb, c\u1ea5u tr\u00fac, t\u1ed5 th\u00e0nh, t\u1ea7ng th\u1ee9, l\u00e2m ph\u1ea7n<\/td>\n<\/tr>\n

Study on the characteristic of forest with distribution of Choerospondias<\/i> axillaris<\/i><\/strong><\/p>\n

Choerospondias axillaris<\/i> (Roxb.) Burtt et Hill <\/b>is known as large fast – grow tree species, with wide distribution. This species belongs to group VI, its wood does not warp, core and sapwood sense of beautiful colors, easy to produce household wooden products. Choerospondias axillaris<\/i> <\/b>is very appropriate to add to the list of big timber plantation species. In the natural forest structure having Choerospondias axillaris<\/i>, <\/b>this is <\/b>not the dominant species ecology (IV% fluctuations from 1.2 to 6%). This is almost no presence on the A3 layer due to its light demand junior stage.<\/p>\n

Keywords:<\/i><\/b> Choerospondias axilliaries<\/i>, forest structure, forest layers, species composition, stand<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110\u1eb6C \u0110I\u1ec2M T\u00c1I SINH T\u1ef0 NHI\u00caN M\u1ed8T S\u1ed0 LO\u00c0I \u01afU TH\u1ebe R\u1eeaNG L\u00c1 R\u1ed8NG TH\u01af\u1edcNG XANH T\u1ea0I V\u01af\u1edcN QU\u1ed0C GIA XU\u00c2N S\u01a0N, T\u1ec8NH PH\u00da TH\u1ecc<\/strong><\/p>\n

Nguy\u1ec5n \u0110\u1eafc Tri\u1ec3n1<\/sup>, Tr\u1ea7n V\u0103n Con2<\/sup>, Ng\u00f4 Th\u1ebf Long1<\/sup>, Ng\u00f4 Ng\u1ecdc Tuy\u00ean1
\n<\/sup>1<\/sup><\/i>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc H\u00f9ng V\u01b0\u01a1ng,
\n2<\/sup> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Th\u1ea3m th\u1ef1c v\u1eadt r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh t\u1ea1i V\u01b0\u1eddn Qu\u1ed1c gia Xu\u00e2n S\u01a1n r\u1ea5t phong ph\u00fa, c\u00f3 t\u1eeb 56 \u0111\u1ebfn 104 lo\u00e0i. V\u00e0ng anh (Saraca dives<\/i>); G\u1ed9i tr\u1eafng (Aphanamixis polystachya<\/i>); S\u00e2ng (Amesiodendron chinense<\/i>); L\u1ed9c v\u1eebng (Barringtonia macrocarpa<\/i>) l\u00e0 c\u00e1c lo\u00e0i \u01b0u th\u1ebf c\u1ee7a t\u1ea7ng c\u00e2y cao. M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh \u1edf trong t\u00e1n c\u00e2y m\u1eb9 c\u1ee7a 4 lo\u00e0i \u01b0u th\u1ebf \u0111\u1ec1u cao h\u01a1n so v\u1edbi \u1edf ngo\u00e0i t\u00e1n, G\u1ed9i tr\u1eafng 635.833 c\u00e2y\/ha g\u1ea5p 72,0 l\u1ea7n, L\u1ed9c v\u1eebng 20.246 c\u00e2y\/ha g\u1ea5p 8,0 l\u1ea7n, S\u00e2ng 13.100 c\u00e2y\/ha g\u1ea5p 3,6 l\u1ea7n, V\u00e0ng anh 10.000 c\u00e2y\/ha g\u1ea5p 2,8 l\u1ea7n. H\u1ea7u h\u1ebft c\u00e2y t\u00e1i sinh c\u00f3 chi\u1ec1u cao d\u01b0\u1edbi 2,0m tr\u00ean 99,6% \u1edf trong t\u00e1n v\u00e0 t\u1eeb 82,0% \u0111\u1ebfn 96,2% \u1edf ngo\u00e0i t\u00e1n. T\u1ef7 l\u1ec7 c\u00e2y t\u00e1i sinh c\u00f3 ph\u1ea9m ch\u1ea5t t\u1ed1t \u1edf trong t\u00e1n t\u1eeb 87,4% \u0111\u1ebfn 99,7% v\u00e0 t\u1eeb 83,0% \u0111\u1ebfn 94,8% \u1edf ngo\u00e0i t\u00e1n. C\u00e2y t\u00e1i sinh ch\u1ee7 y\u1ebfu c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb h\u1ea1t tr\u00ean 96,7% \u1edf trong t\u00e1n v\u00e0 t\u1eeb 87,7% \u0111\u1ebfn 96,2% \u1edf ngo\u00e0i t\u00e1n. T\u1ef7 l\u1ec7 c\u00e2y t\u00e1i sinh tri\u1ec3n v\u1ecdng (h \u2265 2,0m) \u1edf ngo\u00e0i t\u00e1n c\u00e2y m\u1eb9 t\u1eeb 3,8% \u0111\u1ebfn 18,0% v\u00e0 trong t\u00e1n t\u1eeb 0,1% \u0111\u1ebfn 0,4%. \u0110i\u1ec1u \u0111\u00f3 cho th\u1ea5y c\u01a1 h\u1ed9i tham gia t\u1ea7ng c\u00e2y cao c\u1ee7a c\u00e2y t\u00e1i sinh ph\u00e1t t\u00e1n xa c\u00e2y m\u1eb9 cao h\u01a1n \u1edf trong t\u00e1n c\u00e2y m\u1eb9 v\u00e0 \u0111\u00f3 l\u00e0 c\u01a1 ch\u1ebf quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a lo\u00e0i trong r\u1eebng nhi\u1ec7t \u0111\u1edbi.<\/p>\n

T\u1eeb kho\u00e1:<\/i><\/b> T\u00e1i sinh t\u1ef1 nhi\u00ean, lo\u00e0i \u01b0u th\u1ebf, VQG Xu\u00e2n S\u01a1n<\/p>\n

 <\/td>\n<\/tr>\n

Natural regeneration characteristics of some dominant tree species of broardleaf evergreen forests in Xuan Son National Park, Phu Tho province<\/strong><\/p>\n

In Xuan Son National Park, the broardleaf evergreen forests have diverse and various tree species compositions, ranging from 56 to 104 tree species. Our study showed that the four species include Saraca dives<\/i>, Aphanamixis polystachya,<\/i> Amesiodendron chinense<\/i> and Barringtonia macrocarpa<\/i> were the most dominant tree species of the canopy layer. Their regeneration densities were higher under than beyond the shadow of the mother tree\u2019s canopy, in which the density of A. polystachya<\/i> was 635,833 individuals\/ha that was 72 times higher, and 20.246 individuals\/ha with 8 times, 13,100 individuals\/ha with 3.6 times and 10,000 individuals\/ha with 2.8 times higher for B. macrocarpa<\/i>, A. chinense<\/i> and S. dives<\/i>, respectively. Most of regenerating trees were under 2 meters in height, which accounted for above 99.6% of the total of the regeneration individuals under and from 82.0% to 96.2% beyond the shadow of the mother tree\u2019s canopy. The rates of good quality regenerating trees reached from 87.4% to 99.7% for under and from 83.0% to 94.8% for beyond the mother tree\u2019s canopy. Regeneration individuals derived mainly from seeds with above 96.7% and from 87.7% to 96.2% for under and beyond, respectively. The advanced regenerating trees (h \u2265 2m) accounted for from 3.8% to 18.0% beyond and only from 0.1% to 0.4% under the the shadow of the mother tree\u2019s canopy. The study results suggested that the ratio of regeneration individuals growing up to the canopy layer was higher beyond than under the shadow of the mother tree\u2019s canopy, which supports an important mechanism for the maintenance of\u00a0tree<\/a>\u00a0species<\/a>\u00a0diversity<\/a>\u00a0in\u00a0tropical forests<\/a>.<\/p>\n

Keywords:<\/i><\/b> Dominnant tree species, natural regeneration, Xuan Son National Park<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U TR\u00daC THEO NH\u00d3M G\u1ed6 V\u00c0 C\u1ea4P K\u00cdNHC\u1ee6A R\u1eeaNG L\u00c1 R\u1ed8NG TH\u01af\u1edcNG XANH \u1ede HUY\u1ec6N B\u1ea2O L\u00c2M, T\u1ec8NH L\u00c2M \u0110\u1ed2NG<\/strong><\/p>\n

\u0110\u1eb7ng V\u0103n Thuy\u1ebft
\nVi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u l\u1edbp c\u00e2y g\u1ed7 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 8 cm tr\u1edf l\u00ean c\u1ee7a ki\u1ec3u r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh \u1edf huy\u1ec7n B\u1ea3o L\u00e2m t\u1ec9nh L\u00e2m \u0110\u1ed3ng thu \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 v\u1ec1 m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac theo nh\u00f3m g\u1ed7 v\u00e0 c\u1ea5p k\u00ednh nh\u01b0 sau: Tr\u1ea1ng th\u00e1i r\u1eebng gi\u00e0u c\u00f3 m\u1eadt \u0111\u1ed9 c\u00e2y \u0111\u1ee9ng 1024 c\u00e2y\/ha, trong \u0111\u00f3 c\u1ea5p ki\u0301nh 8cm \u2264 D1,3 <\/sub>< 15cm chi\u1ebfm 61,4%; s\u1ed1 c\u00e2y t\u00e1i sinh la\u0300 5882 c\u00e2y\/ha, t\u00e2\u0323p trung \u1edf nh\u00f3m g\u1ed7 6 chi\u1ebfm 35,0%; t\u1ed5ng s\u1ed1 c\u00e2y \u0111\u1ee9ng t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 29,2%; t\u00f4\u0309ng ti\u00ea\u0301t di\u00ea\u0323n ngang c\u00e2y \u0111\u01b0\u0301ng t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 36,3%; t\u00f4\u0309ng th\u1ec3 t\u00edch d\u01b0\u1edbi c\u00e0nh t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 37,9%; t\u1ed5ng tr\u1eef l\u01b0\u1ee3ng t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 38,2%; s\u1ed1 c\u00e2y \u0111\u1ee9ng \u1edf c\u00e1c c\u1ea5p k\u00ednh tr\u00ean 30cm t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 38,6%; th\u1ec3 t\u00edch d\u01b0\u1edbi c\u00e0nh \u1edf c\u00e1c c\u1ea5p k\u00ednh tr\u00ean 30 cm t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 41,9%. Tra\u0323ng tha\u0301i r\u01b0\u0300ng trung b\u00ecnh c\u00f3 m\u1eadt \u0111\u1ed9 c\u00e2y \u0111\u1ee9ng 733 c\u00e2y\/ha, trong \u0111\u00f3 c\u1ea5p ki\u0301nh 8cm \u2264 D1,3 <\/sub>< 15cm chi\u1ebfm 47,8%; s\u00f4\u0301 c\u00e2y ta\u0301i sinh c\u1ee7a tra\u0323ng tha\u0301i r\u01b0\u0300ng trung bi\u0300nh la\u0300 5600 c\u00e2y\/ha, t\u1eadp trung \u1edf nh\u00f3m g\u1ed7 6 chi\u1ebfm 58,9%; t\u1ed5ng s\u00f4\u0301 c\u00e2y \u0111\u01b0\u0301ng t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 6 chi\u1ebfm 43,3%; t\u00f4\u0309ng ti\u00ea\u0301t di\u00ea\u0323n ngang c\u00e2y \u0111\u01b0\u0301ng t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 32,9% v\u00e0 nh\u00f3m g\u1ed7 6 chi\u1ebfm 32,9%; t\u00f4\u0309ng th\u1ec3 t\u00edch d\u01b0\u1edbi c\u00e0nh t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 34,2%; t\u1ed5ng tr\u1eef l\u01b0\u1ee3ng t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 35,5%; s\u1ed1 c\u00e2y \u0111\u1ee9ng \u1edf c\u00e1c c\u1ea5p k\u00ednh tr\u00ean 30cm t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 43,2%; th\u1ec3 t\u00edch d\u01b0\u1edbi c\u00e0nh \u1edf c\u00e1c c\u1ea5p k\u00ednh tr\u00ean 30cm t\u00e2\u0323p trung \u01a1\u0309 nho\u0301m g\u00f4\u0303 5 chi\u1ebfm 46,6%. Tr\u1ea1ng th\u00e1i r\u1eebng ngh\u00e8o c\u00f3 m\u1eadt \u0111\u1ed9 c\u00e2y \u0111\u1ee9ng 805 c\u00e2y\/ha, trong \u0111\u00f3 c\u1ea5p ki\u0301nh 8cm \u2264 D1,3 <\/sub>< 15cm chi\u1ebfm 62,1%; s\u00f4\u0301 c\u00e2y ta\u0301i sinh la\u0300 5600 c\u00e2y\/ha t\u1eadp trung \u1edf nho\u0301m g\u00f4\u0303 6 chi\u1ebfm 50%; t\u1ed5ng s\u00f4\u0301 c\u00e2y \u0111\u01b0\u0301ng ch\u1ee7 y\u1ebfu \u1edf nh\u00f3m g\u1ed7 6 chi\u1ebfm 66,1%; t\u00f4\u0309ng ti\u00ea\u0301t di\u00ea\u0323n ngang c\u00e2y \u0111\u01b0\u0301ng t\u1eadp trung \u1edf nho\u0301m g\u00f4\u0303 6 chi\u1ebfm 58,0%; t\u00f4\u0309ng th\u1ec3 t\u00edch d\u01b0\u1edbi c\u00e0nh t\u1eadp trung \u1edf nho\u0301m g\u00f4\u0303 6 chi\u1ebfm 55,7%; t\u1ed5ng tr\u1eef l\u01b0\u1ee3ng t\u1eadp trung \u1edf nho\u0301m g\u00f4\u0303 6 chi\u1ebfm 56,0%; s\u1ed1 c\u00e2y \u0111\u1ee9ng \u1edf c\u00e1c c\u1ea5p k\u00ednh tr\u00ean 30cm t\u1eadp trung \u1edf nho\u0301m g\u00f4\u0303 6 chi\u1ebfm 66,7%; th\u1ec3 t\u00edch d\u01b0\u1edbi c\u00e0nh \u1edf c\u00e1c c\u1ea5p k\u00ednh tr\u00ean 30cm t\u1eadp trung \u1edf nho\u0301m g\u00f4\u0303 6 chi\u1ebfm 82,7%.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>C\u1ea5u tr\u00fac, nh\u00f3m g\u1ed7, c\u1ea5p k\u00ednh, r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh, huy\u1ec7n B\u1ea3o L\u00e2m<\/p>\n

 <\/td>\n<\/tr>\n

Some structural and timber class features of evergreen broadleaf forest in Bao Lam district, Lam Dong province<\/strong><\/p>\n

Research on layer 8 cm upwards diameter trees of evergreen broadleaf forest in Bao Lam district, Lam Dong province has a number of structural and timber class features as: In rich forest stand there are 1024 trees\/ha, which 8 cm \u2264 D 1.3 <\/sub>< 15 cm class accounted for 61.4%; regeneration of the 5882 trees\/ha, mainly accounts for 35.0% of timber class 6; total trees accounted for 29.2% of timber class 5; total basal area accounted for 36.3% of timber class 5; overall volume under the branches concentrated in the timber class 5 with 37.9%; total volumes are concentrated in the accounts for 38.2% of timber class 5; tree number on 30 cm diameter classes at the focus accounted for 38.6% of timber class 5; volume under the branches on 30 cm diameter classes at the focus accounted for 41.9% of timber class 5. In average forest stand there are 733 trees\/ha, which 8 cm \u2264 D1.3 < 15 cm class accounted for 47.8%; regeneration of the 5600 trees\/ha, mainly accounts for 58.9% of timber class 6; total trees accounted for 43.3% of timber class 6; total basal area accounted for 32.9% of timber class 5, 32.9% of timber class 6; overall volume under the branches concentrated in the timber class 5 with 34.2%; total volumes are concentrated in the accounts for 35.5% of timber class 5; tree number on 30 cm diameter classes at the focus accounted for 43.2% of timber class 5; volume under the branches on 30 cm diameter classes at the focus accounted for 46.6% of timber class 5. In poor forest stand there are 805 trees\/ha, which 8 cm \u2264 D 1.3 <\/sub>< 15 cm class accounted for 62.1%; regeneration of the 5600 trees\/ha, mainly accounts for 50.0% of timber class 6; total trees accounted for 66.1% of timber class 6; total basal area accounted for 58.0% of timber class 6; overall volume under the branches concentrated in the timber class 6 with 55,7%; total volumes are concentrated in the accounts for 56.0% of timber class 6; tree number on 30 cm diameter classes at the focus accounted for 66.7% of timber class 6; volume under the branches on 30 cm diameter classes at the focus accounted for 82.7% of timber class 6.<\/p>\n

Keywords:<\/i><\/b> Structural, timber class, evergreen broadleaf forest, Bao Lam district.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

SINH TR\u01af\u1edeNG M\u1ed8T S\u1ed0 LO\u00c0I C\u00c2Y B\u1ea2N \u0110\u1ecaA TR\u1ed2NG D\u01af\u1edaI T\u00c1N R\u1eeaNG T\u1ea0I S\u00d3C S\u01a0N, H\u00c0 N\u1ed8I<\/strong><\/p>\n

Nguy\u1ec5n Minh Thanh1<\/sup>, T\u1ea1 Duy Long2
\n<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p
\nTrung t\u00e2m PTLN H\u00e0 N\u1ed9i<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng c\u1ee7a 3 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba Sao \u0111en (Hopea odorata<\/i>\u00a0<\/i>Roxb.), Lim xanh (Erythrophleum fordii<\/i> Oliv) v\u00e0 Re g\u1eebng (Cinamomum obtusifolium<\/i> (Roxb.) tr\u1ed3ng n\u0103m 2011 trong c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng g\u1ed3m tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng Th\u00f4ng nh\u1ef1a 26 tu\u1ed5i, tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng v\u00e0 r\u1eebng Keo tai t\u01b0\u1ee3ng xen Th\u00f4ng nh\u1ef1a 20 tu\u1ed5i v\u00e0 tr\u1ed3ng tr\u00ean tr\u1ea3ng c\u1ecf c\u00e2y b\u1ee5i t\u1ea1i S\u00f3c S\u01a1n H\u00e0 N\u1ed9i cho th\u1ea5y sau 5 n\u0103m c\u1ea3 3 lo\u00e0i c\u00e2y \u0111\u1ec1u cho sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n b\u00ecnh th\u01b0\u1eddng. Trong 3 lo\u00e0i c\u00e2y tr\u1ed3ng t\u1ea1i S\u00f3c S\u01a1n th\u00ec Sao \u0111en l\u00e0 lo\u00e0i cho sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t v\u1edbi
\n= 5,14cm, = 2,68m, = 1,89 v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t t\u1eeb 67 – 75%; ti\u1ebfp \u0111\u1ebfn l\u00e0 Lim xanh v\u1edbi = 4,28cm, = 2,19m, = 1,5m v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t t\u1eeb 67 – 75% v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 Re g\u1eebng v\u1edbi = 3,79cm, = 1,76m, = 1,39 m v\u00e0 c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng t\u1eeb 58 – 67%. Nh\u00ecn chung sau 5 tu\u1ed5i c\u00e2y tr\u1ed3ng c\u1ee7a 3 lo\u00e0i \u0111\u1ec1u t\u1ed1t nh\u1ea5t \u1edf m\u00f4 h\u00ecnh tr\u1ed3ng tr\u00ean th\u1ea3m th\u1ef1c b\u00ec l\u00e0 c\u00e2y b\u1ee5i th\u1ea3m t\u01b0\u01a1i v\u00e0 sinh tr\u01b0\u1edfng k\u00e9m nh\u1ea5t trong m\u00f4 h\u00ecnh tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng Th\u00f4ng nh\u1ef1a. K\u1ebft qu\u1ea3 b\u01b0\u1edbc \u0111\u1ea7u n\u00e0y c\u0169ng \u0111\u00e3 cho th\u1ea5y c\u1ea3 3 lo\u00e0i c\u00e2y n\u00e0y \u0111\u1ec1u c\u00f3 tri\u1ec3n v\u1ecdng tr\u1ed3ng r\u1eebng n\u00f3i chung v\u00e0 r\u1eebng ph\u00f2ng h\u1ed9 n\u00f3i ri\u00eang \u1edf S\u00f3c S\u01a1n, H\u00e0 N\u1ed9i.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>C\u00e2y b\u1ea3n \u0111\u1ecba, d\u01b0\u1edbi t\u00e1n r\u1eebng, sinh tr\u01b0\u1edfng, S\u00f3c S\u01a1n<\/p>\n

 <\/td>\n<\/tr>\n

Evaluating the growth rates of some natives species under the forest canopy in Soc Son, Ha Noi<\/strong><\/p>\n

The research aims at evaluating the growth rates of three native species: Hopea odorata <\/i>Roxb, Erythrophleum fordii <\/i>Oliv and Cinamomum obtusifolium <\/i>Roxb. They were planted in 2011 under forest canopy of 26 year old plantation Pinus merkusii<\/i>; 20 year old plantation Acacia mangium <\/i>Willd. forest and mix plantation forest includes acacia and pine; and also planted in scrubby grassland in Soc Son, Ha Noi. The result shows that, after 5 years of plantation, all three species have normal growth rate, in which Hopeaodorata<\/i> has the highest figure: = 5.14cm, = 2.68m, = 1.89m and survival rate is 67 – 75%; Erythrophleum <\/i>fordii <\/i>has = 4.28cm, = 2.19m, = 1.5m with 67 – 75% of survival rate; Cinamomum obtusifolium <\/i>has the lowest figure: = 3.79cm, = 1.76m, = 1.39m and 58 – 67% of survival rate. In general, after 5 years of plantation, all three species have good growth rate when they are planted on vegetation layer (scrubby grassland) but under the Pinus merkusii<\/i> forest canopy, the growth rate is poorer. Based on this results, these species have prospects for afforestation in general and for protective forests in particular.<\/p>\n

Keywords:<\/i><\/b> Native species, under forest canopy, growth, Soc Son<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

KH\u1ea2 N\u0102NG CUNG C\u1ea4P G\u1ed6 L\u1edaN C\u1ee6A R\u1eeaNG KEO LAI 13,5 TU\u1ed4I TR\u1ed2NG \u1ede QU\u1ea2NG TR\u1eca<\/strong><\/p>\n

Nguy\u1ec5n Huy S\u01a1n, Ph\u1ea1m Xu\u00e2n \u0110\u1ec9nh
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTKeo lai (Acacia hybrids<\/i>) l\u00e0 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c \u1edf Vi\u1ec7t Nam trong nh\u1eefng n\u0103m qua, ch\u1ee7 y\u1ebfu cung c\u1ea5p g\u1ed7 nh\u1ecf cho c\u00f4ng nghi\u1ec7p ch\u1ebf bi\u1ebfn b\u1ed9t gi\u1ea5y v\u00e0 d\u0103m m\u1ea3nh xu\u1ea5t kh\u1ea9u. Do nhu c\u1ea7u s\u1eed d\u1ee5ng g\u1ed7 l\u1edbn ng\u00e0y c\u00e0ng t\u0103ng n\u00ean vi\u1ec7c tr\u1ed3ng r\u1eebng keo lai kinh doanh g\u1ed7 l\u1edbn l\u00e0 c\u1ea7n thi\u1ebft. \u0110\u1ec3 g\u00f3p ph\u1ea7n l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng keo lai cung c\u1ea5p g\u1ed7 l\u1edbn xin gi\u1edbi thi\u1ec7u m\u00f4 h\u00ecnh keo lai 13,5 n\u0103m tu\u1ed5i tr\u1ed3ng \u1edf Cam L\u1ed9, Qu\u1ea3ng Tr\u1ecb. M\u1eadt \u0111\u1ed9 tr\u1ed3ng ban \u0111\u1ea7u l\u00e0 1.330, 1.660 v\u00e0 2.500 c\u00e2y\/ha, sau 2 n\u0103m tr\u1ed3ng t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t tr\u00ean 91%, sau 9,5 n\u0103m t\u1ef7 l\u1ec7 s\u1ed1ng gi\u1ea3m m\u1ea1nh ch\u1ec9 c\u00f2n t\u1eeb 49 – 56%, sau 13,5 n\u0103m t\u1ef7 l\u1ec7 s\u1ed1ng ch\u1ec9 c\u00f2n t\u1eeb 31 – 47%. Sau 2 n\u0103m, sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh (D1,3<\/sub>) \u0111\u1ea1t t\u1eeb 6,19 – 7,17cm, nhanh nh\u1ea5t \u1edf m\u1eadt \u0111\u1ed9 1.330 c\u00e2y\/ha, ch\u1eadm nh\u1ea5t \u1edf m\u1eadt \u0111\u1ed9 2.500 c\u00e2y\/ha; \u2206d = 3,1 – 3,6 cm\/n\u0103m, \u2206h = 3,5 – 3,6 m\/n\u0103m. Sau 9,5 n\u0103m, sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ea1t t\u1eeb 15,13 – 17,49 m v\u00e0 chi\u1ec1u cao \u0111\u1ea1t t\u1eeb 17,52 – 18,64 m; \u2206d = 1,59 – 1,84 cm\/n\u0103m, \u2206h = 1,84 – 1,96 m\/n\u0103m. Sau 13,5 n\u0103m, sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ea1t 17,93 – 18,91cm, chi\u1ec1u cao \u0111\u1ea1t t\u1eeb 21,06 – 21,98m; \u2206d = 1,33 – 1,40 cm\/n\u0103m, \u2206h = 1,56 – 1,63 m\/n\u0103m. Tr\u1eef l\u01b0\u1ee3ng g\u1ed7 c\u00e2y \u0111\u1ee9ng (M) c\u1ee7a r\u1eebng tr\u1ed3ng sau 9,5 n\u0103m \u0111\u1ea1t t\u1eeb 160,30 – 214,80 m3<\/sup>\/ha, \u2206M = 16,87 – 22,61 m3<\/sup>\/ha\/n\u0103m. Sau 13,5 n\u0103m tu\u1ed5i tr\u1eef l\u01b0\u1ee3ng g\u1ed7 (M) \u0111\u1ea1t t\u1eeb 168,10 – 219,54 m3<\/sup>\/ha, \u2206M = 12,45 – 16,26 m3<\/sup>\/ha\/n\u0103m. S\u1ed1 c\u00e2y \u0111\u1ea1t ti\u00eau chu\u1ea9n g\u1ed7 l\u1edbn (D1,3<\/sub> > 18cm) sau 9,5 n\u0103m tu\u1ed5i \u0111\u1ea1t t\u1ef7 l\u1ec7 t\u1eeb 16,98 – 37,93%, ch\u01b0a c\u00f3 c\u00e2y c\u00f3 D1,3<\/sub> > 25cm. Sau 13,5 n\u0103m tr\u1ed3ng, s\u1ed1 c\u00e2y \u0111\u1ea1t ti\u00eau chu\u1ea9n g\u1ed7 l\u1edbn (D1,3<\/sub> > 18cm) \u0111\u1ea1t t\u1ef7 l\u1ec7 t\u1eeb 48 – 58%, trong \u0111\u00e3 c\u00f3 t\u1eeb 2 – 7% s\u1ed1 c\u00e2y c\u00f3 D1,3<\/sub> > 25cm.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>G\u1ed7 l\u1edbn, keo lai 13,5 n\u0103m tu\u1ed5i, Qu\u1ea3ng Tr\u1ecb<\/p>\n

 <\/td>\n<\/tr>\n

Potential of sawlog production of the 13.5 year-old Acacia hybrid<\/i> in Quang Tri province<\/strong><\/p>\n

Acacia hybrid<\/i> is a major planting species for small timber production in Vietnam in recent years. Due to the increasing demand of sawlog in wood industry, Acacia hybrid<\/i> was considered as a potential species for production of sawlog. This study assessed the potential of sawlog production of the 13.5 year-old Acacia hybrid<\/i> plantation in Cam Lo district, Quang Tri province to provide information for planting Acacia hybrid<\/i> for sawlog. There are three treatments in planting density were set up, 1330, 1660 and 2500 trees\/ha. The overall survival rate decreased from 91% at 2 year-old to 49 – 56% at 9.5 year-old and 31 – 47% at 13.5 year-old. At 2 year-old, diameter at breast height (DBH) was 6.19cm at the planting density of 2500 trees\/ha and 7.17cm at 1330 trees\/ha; annual DBH and height increment were 3.1 – 3.6cm\/year and 3.5 – 3.6 m\/year, respectively. At 9.5 year-old, DBH and height were 15.13 – 17.49cm and 17.52 – 18.64m, respectively; annual DBH and height increment were 1.59 – 1.84 cm\/year and 1.84 – 1.96 m\/year, respectively. At 13.5 year-old, DBH and height were 17.93 – 18.91cm and 21.06 – 21.98m, respectively; annual DBH and height increment were 1.33 – 1.40 cm\/year and
\n1.56 – 1.63 m\/year, respectively. Standing volume at 9.5 year-old was 160.3 – 214.8 m3<\/sup>\/ha and MAI was 16.87 – 22.61 m3<\/sup>\/ha\/year. Standing volume at 13.5 year-old was 168.1 – 219.4 m3<\/sup>\/ha and MAI was
\n12.45 – 16.26 m3<\/sup>\/ha\/year. After 9.5 years, the percentages of number of trees which can be used for sawlog (DBH > 18cm) was 16.98 – 37.93%; there are not any trees having DBH > 25cm. After 13.5 years, the percentages of number of trees for sawlog (DBH > 18cm) was 48 – 58%, in which 2 – 7% of trees having DBH > 25cm.<\/p>\n

Keywords:<\/i><\/b> Sawlog, acacia hybrids 13.5 year old, Quang Tri province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

GI\u00c1M S\u00c1T CARBON R\u1eeaNG C\u00d3 S\u1ef0 THAM GIA C\u1ee6A C\u1ed8NG \u0110\u1ed2NG \u0110\u1ecaA PH\u01af\u01a0NG \u00a0– K\u1ebeT QU\u1ea2 \u0110\u1ea0T \u0110\u01af\u1ee2C V\u00c0 NH\u1eeeNG V\u1ea4N \u0110\u1ec0 \u0110\u1eb6T RA C\u1ea6N GI\u1ea2I QUY\u1ebeT<\/strong><\/p>\n

Ph\u1ea1m Tu\u1ea5n Anh1<\/sup>, B\u1ea3o Huy2
\n<\/sup>1<\/sup><\/i> S\u1edf K\u1ebf ho\u1ea1ch v\u00e0 \u0110\u1ea7u t\u01b0 t\u1ec9nh \u0110\u1eafk N\u00f4ng
\n2<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc T\u00e2y Nguy\u00ean<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTGi\u00e1m s\u00e1t carbon r\u1eebng c\u00f3 s\u1ef1 tham gia (PCM) l\u00e0 m\u1ed9t n\u1ed9i dung quan tr\u1ecdng trong ch\u01b0\u01a1ng tr\u00ecnh \u201cGi\u1ea3m thi\u1ec3u kh\u00ed ph\u00e1t th\u1ea3i t\u1eeb m\u1ea5t r\u1eebng v\u00e0 suy tho\u00e1i r\u1eebng\u201d (REDD+<\/sup>). B\u00e0i b\u00e1o n\u00e0y tr\u00ean c\u01a1 s\u1edf t\u1ed5ng h\u1ee3p v\u00e0 ph\u00e2n t\u00edch t\u00e0i li\u1ec7u \u0111\u00e3 ch\u1ec9 ra nh\u1eefng th\u00e0nh t\u1ef1u, k\u1ebft qu\u1ea3 c\u0169ng nh\u01b0 nh\u1eefng v\u1ea5n \u0111\u1ec1 v\u1ec1 PCM c\u1ea7n gi\u1ea3i quy\u1ebft. Nh\u1eefng th\u00e0nh t\u1ef1u, k\u1ebft qu\u1ea3 c\u1ee7a PCM trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc: \u0110\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed, vai tr\u00f2 c\u1ee7a PCM trong h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t r\u1eebng qu\u1ed1c gia v\u00e0 h\u1ec7 th\u1ed1ng \u0110o l\u01b0\u1eddng – B\u00e1o c\u00e1o – Th\u1ea9m \u0111\u1ecbnh (MRV) \u0111\u1ec3 b\u00e1o c\u00e1o kh\u00ed ph\u00e1t th\u1ea3i trong REDD+<\/sup>; ph\u01b0\u01a1ng ph\u00e1p gi\u00e1m s\u00e1t carbon r\u1eebng c\u00f3 s\u1ef1 tham gia c\u1ee7a c\u1ed9ng \u0111\u1ed3ng \u0111\u1ecba ph\u01b0\u01a1ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng, ph\u00e1t tri\u1ec3n; \u0111\u00e3 s\u1eed d\u1ee5ng k\u1ebft qu\u1ea3 qu\u1ea3n l\u00fd r\u1eebng c\u1ed9ng \u0111\u1ed3ng (CFM) \u0111\u1ec3 ph\u00e1t tri\u1ec3n PCM; d\u1eef li\u1ec7u do c\u1ed9ng \u0111\u1ed3ng \u0111o t\u00ednh d\u00f9ng \u0111\u1ec3 \u01b0\u1edbc t\u00ednh carbon \u0111\u1ea1t \u0111\u1ed9 tin c\u1eady (sai l\u1ec7ch 1 – 7%) v\u1edbi chi ph\u00ed ch\u1ec9 b\u1eb1ng 4 – 34% so v\u1edbi c\u01a1 quan chuy\u00ean nghi\u1ec7p. Nh\u1eefng v\u1ea5n \u0111\u1ec1 c\u1ea7n quan t\u00e2m gi\u1ea3i quy\u1ebft \u1edf Vi\u1ec7t Nam: C\u1ed9ng \u0111\u1ed3ng c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c l\u1eadp m\u1ed9t vai tr\u00f2 r\u00f5 r\u00e0ng trong REDD+<\/sup> v\u00ec h\u1ecd \u0111ang qu\u1ea3n l\u00fd 1\/2 di\u1ec7n t\u00edch r\u1eebng, trong \u0111\u00f3 c\u1ea7n thu h\u00fat c\u1ed9ng \u0111\u1ed3ng trong thu th\u1eadp d\u1eef li\u1ec7u v\u00e0 gi\u00e1m s\u00e1t r\u1eebng; k\u1ef9 thu\u1eadt CFM c\u1ea7n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n PCM; \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 tin c\u1eady v\u00e0 chi ph\u00ed \u0111\u1ec3 l\u1ef1a ch\u1ecdn c\u00e1c ho\u1ea1t \u0111\u1ed9ng ph\u00f9 h\u1ee3p cho PCM; x\u00e2y d\u1ef1ng ch\u00ednh s\u00e1ch \u01b0u \u0111\u00e3i t\u1ea1m th\u1eddi cho c\u1ed9ng \u0111\u1ed3ng tham gia cho t\u1edbi khi c\u00f3 th\u1ec3 chi tr\u1ea3 d\u1ef1a v\u00e0o k\u1ebft qu\u1ea3. C\u1ed9ng \u0111\u1ed3ng tham gia trong qu\u1ea3n l\u00fd, gi\u00e1m s\u00e1t t\u00e0i nguy\u00ean r\u1eebng, carbon r\u1eebng l\u00e0 m\u1ed9t y\u00eau c\u1ea7u trong UNFCCC (2011); v\u00ec v\u1eady c\u1ea7n \u0111\u01b0a ra \u0111\u01b0\u1ee3c c\u00e1c h\u01b0\u1edbng d\u1eabn cho vi\u1ec7c th\u1ef1c thi PCM \u1edf Vi\u1ec7t Nam.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>Carbon r\u1eebng, c\u00f3 s\u1ef1 tham gia, c\u1ed9ng \u0111\u1ed3ng \u0111\u1ecba ph\u01b0\u01a1ng, gi\u00e1m s\u00e1t r\u1eebng<\/p>\n

 <\/td>\n<\/tr>\n

Participatory carbon monitoring – the achievements and the issues raised need to be addressed<\/strong><\/p>\n

Participatory Carbon Monitoring (PCM) is an important part of the program “Reducing emissions from deforestation and forest degradation” (REDD+<\/sup>). Based on analysis of 69 documents (9 in Vietnamese and 60 in English) this article pointed out the achievements and results as well as the issues of PCM that need to be addressed. The achievements and results in the country and around the world: the position and the role of PCM were identified in the system of national forest monitoring and Measurement – Report – Verification (MRV) to report emissions in REDD + program; methods for participatory carbon monitoring were developed; used results of community forest management (CFM) to develop PCM; dataset measured by community was used to estimate forest carbon that had the reliability (1 – 7% deviation) at a cost of only 4 – 34% compared with professional bodies. The issues need to be addressed in Vietnam: Communities are managing one quarter of the forest area, so REDD+<\/sup> program would establish a strategy to attract the community in data collection and forest monitoring; CFM techniques should be used to develop the methods and tools for PCM; validation of the reliability and the operating costs to select suitable activities for PCM; construction of temporary incentives policy for communities until REDD+<\/sup> program can pay based on the results. Community participation in the management and monitoring of forest resources, forest carbon is a critical requirement of the UNFCCC (2011), so there is a strong need to come up with guidelines for implementing PCM in Vietnam.<\/p>\n

Keywords:<\/i><\/b> <\/b>Community, forest monitoring, forest carbon, participatory.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

PH\u00c2N CHIA V\u00c0 PH\u00c1T TRI\u1ec2N \u1ee8NG D\u1ee4NG TRONG PH\u00c2N T\u00cdCH V\u00c0 QU\u1ea2N L\u00dd L\u1eacP \u0110\u1ecaA B\u00c1N NG\u1eacP T\u1ec8NH B\u00ccNH PH\u01af\u1edaC<\/strong><\/p>\n

Tr\u1ea7n Qu\u1ed1c Ho\u00e0n
\nQu\u1ef9 B\u1ea3o v\u1ec7 v\u00e0 Ph\u00e1t tri\u1ec3n r\u1eebng B\u00ecnh Ph\u01b0\u1edbc<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTT\u1eeb nh\u1eefng h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1eadp \u0111\u1ecba hi\u1ec7n c\u00f3 l\u00e0: (1) L\u01b0\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1eadp \u0111\u1ecba v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i 100m; (2) L\u01b0\u1edbi \u0111\u1ed9 cao, \u0111\u1ed9 d\u1ed1c v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i 30m; (3) S\u1ed1 li\u1ec7u \u0111i\u1ec1u ti\u1ebft m\u1ef1c n\u01b0\u1edbc \u1edf c\u00e1c l\u00f2ng h\u1ed3 Th\u00e1c M\u01a1, C\u1ea7n \u0110\u01a1n, Sork Ph\u00fa Mi\u00eang, D\u1ea7u Ti\u1ebfng, nghi\u00ean c\u1ee9u \u0111\u00e3: (1) X\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng nh\u1eefng l\u01b0\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1eadp b\u00e1n ng\u1eadp tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh B\u00ecnh Ph\u01b0\u1edbc; (2) Ph\u00e1t tri\u1ec3n \u0111\u01b0\u1ee3c \u1ee8ng d\u1ee5ng ph\u00e2n t\u00edch v\u00e0 qu\u1ea3n l\u00fd l\u1eadp \u0111\u1ecba b\u00e1n ng\u1eadp t\u1ec9nh B\u00ecnh Ph\u01b0\u1edbc b\u1eb1ng ng\u00f4n ng\u1eef Microsoft Visual C# Professional 2010 v\u00e0 MapBasic 10.5. \u1ee8ng d\u1ee5ng n\u00e0y c\u00f3 c\u00e1c ch\u1ee9c n\u0103ng: (1) Truy xu\u1ea5t b\u1ea3n \u0111\u1ed3 l\u00f2ng h\u1ed3, \u0111\u01b0\u1eddng \u0111\u1ed3ng m\u1ee9c, l\u01b0\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1eadp \u0111\u1ecba b\u00e1n ng\u1eadp; (2) T\u1ef1 \u0111\u1ed9ng h\u00f3a x\u00e2y d\u1ef1ng b\u1ea3n \u0111\u1ed3 l\u1eadp \u0111\u1ecba b\u00e1n ng\u1eadp theo gi\u00e1 tr\u1ecb \u0111\u1ed9 ch\u00eanh cao; (3) Ph\u00e2n t\u00edch v\u00e0 th\u1ed1ng k\u00ea l\u1eadp \u0111\u1ecba b\u00e1n ng\u1eadp tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh B\u00ecnh Ph\u01b0\u1edbc. K\u1ebft qu\u1ea3 ch\u1ea1y th\u1ef1c nghi\u1ec7m cho th\u1ea5y \u1ee8ng d\u1ee5ng c\u00f3 t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd nhanh, \u0111\u1eb7t \u0111\u1ed9 ch\u00ednh x\u00e1c cao. \u1ee8ng d\u1ee5ng \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t \u0111\u1ed9c l\u1eadp tr\u00ean c\u00e1c m\u00e1y t\u00ednh c\u00e1 nh\u00e2n, d\u1ec5 s\u1eed d\u1ee5ng.<\/p>\n

T\u1eeb kh\u00f3a<\/b>. B\u00ecnh Ph\u01b0\u1edbc, c\u01a1 s\u1edf d\u1eef li\u1ec7u, l\u1eadp \u0111\u1ecba b\u00e1n ng\u1eadp, truy xu\u1ea5t, ph\u00e2n t\u00edch, \u1ee9ng d\u1ee5ng<\/p>\n

 <\/td>\n<\/tr>\n

Division and application development for analysis and management the submerged site map in Binh Phuoc provinve<\/strong><\/p>\n

From the existing database systems of sites, including: (1) Site database grid with a 100m spatial resolution; (2) Elevation and slope grid with a 30m spatial resolution; (3) Regulation data of the water level in the Thac Mo, Don, Sork Phu Mieng, Dau Tieng lakes, this study has constructed a system of submerged site database grids and developed the Application for analysis and management the submerged site maps in Binh Phuoc province under the language of Microsoft Visual C # 2010 Professional and MapBasic 10.5. This application has the functions: (1) Retrieving to the lake maps, contour values, submerged site database grids; (2) Automating the creation of submerged site maps under various height values; (3) In addition, this application allows to analyze and statistic the submerged sites in Binh Phuoc province. As experimental results show that the Application has high speed processing and high precision. Applications are installed independently on personal computers and easy to use.<\/p>\n

Keywords:<\/i><\/b> Binh Phuoc, database, submerged site, retrieving, analysis, application<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ee8NG D\u1ee4NG GIS V\u00c0 \u1ea2NH LANDSAT \u0110A TH\u1edcI GIAN X\u00c2Y D\u1ef0NG B\u1ea2N \u0110\u1ed2 BI\u1ebeN \u0110\u1ed8NG DI\u1ec6N T\u00cdCH R\u1eeaNG T\u1ea0I X\u00c3 V\u00d9NG \u0110\u1ec6M XU\u00c2N \u0110\u00c0I V\u00c0 KIM TH\u01af\u1ee2NG, V\u01af\u1edcN QU\u1ed0C GIA XU\u00c2N S\u01a0N<\/strong><\/p>\n

Nguy\u1ec5n H\u1ea3i H\u00f2a1<\/sup>, Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n2<\/sup>, L\u01b0\u01a1ng Th\u1ecb Thu Trang1
\n<\/sup>1<\/sup><\/i>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Th\u00e1i Nguy\u00ean<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

C\u00f4ng ngh\u00ea\u0323 \u1ea3nh vi\u00ea\u0303n tha\u0301m va\u0300 GIS c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong gi\u00e1m s\u00e1t v\u00e0 \u0111\u00e1nh gi\u00e1 t\u00e0i nguy\u00ean m\u00f4i tr\u01b0\u1eddng, \u0111\u1eb7c bi\u1ec7t trong x\u00e1c \u0111\u1ecbnh bi\u1ebfn \u0111\u1ed9ng \u0111\u1ea5t l\u00e2m nghi\u1ec7p. Nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e2y d\u1ef1ng c\u01a1 s\u01a1\u0309 d\u01b0\u0303 li\u00ea\u0323u v\u1ec1 di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p va\u0300 ba\u0309n \u0111\u00f4\u0300 hi\u00ea\u0323n tra\u0323ng r\u01b0\u0300ng ca\u0301c n\u0103m 2001, 2008 v\u00e0 2015; ba\u0309n \u0111\u00f4\u0300 bi\u00ea\u0301n \u0111\u00f4\u0323ng ta\u0300i nguy\u00ean r\u01b0\u0300ng va\u0300 \u0111\u00e2\u0301t l\u00e2m nghi\u00ea\u0323p giai \u0111oa\u0323n t\u1eeb n\u0103m 2001 – 2008 v\u00e0 2008 – 2015 t\u1ea1i hai x\u00e3 v\u00f9ng \u0111\u1ec7m Xu\u00e2n \u0110\u00e0i v\u00e0 Kim Th\u01b0\u1ee3ng thu\u1ed9c VQG Xu\u00e2n S\u01a1n qua vi\u1ec7c s\u1eed d\u1ee5ng \u1ea3nh v\u1ec7 tinh Landsat \u0111a th\u1eddi gian. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y ph\u00e2n lo\u1ea1i \u1ea3nh b\u1eb1ng ch\u1ec9 s\u1ed1 th\u1ef1c v\u1eadt NDVI k\u1ebft h\u1ee3p v\u1edbi ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n lo\u1ea1i kh\u00f4ng ki\u1ec3m \u0111\u1ecbnh v\u00e0 \u0111i\u1ec1u tra th\u1ef1c \u0111\u1ecba cho \u0111\u1ed9 tin c\u1eady kh\u00e1 cao, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u1ed5 h\u1ee3p ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ec3 x\u00e2y d\u1ef1ng b\u1ea3n \u0111\u1ed3 \u0111\u1ea5t l\u00e2m nghi\u1ec7p trong \u0111i\u1ec1u ki\u1ec7n thi\u1ebfu d\u1eef li\u1ec7u ki\u1ec3m ch\u1ee9ng c\u00e1c n\u0103m \u1ea3nh qu\u00e1 kh\u1ee9. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u bi\u1ebfn \u0111\u1ed9ng cho th\u1ea5y di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p c\u00f3 r\u1eebng t\u0103ng m\u1ea1nh sau khi VQG Xu\u00e2n S\u01a1n th\u00e0nh l\u1eadp, t\u0103ng 6801,5ha trong giai \u0111o\u1ea1n 2001 – 2015, di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p ch\u01b0a c\u00f3 r\u1eebng gi\u1ea3m m\u1ea1nh 3067,6ha, di\u1ec7n t\u00edch \u0111\u1ea5t b\u1edfi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c c\u0169ng gi\u1ea3m 3733,9ha. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y ho\u1ea1t \u0111\u1ed9ng qu\u1ea3n l\u00fd \u0111\u1ea5t l\u00e2m nghi\u1ec7p t\u1ea1i v\u00f9ng \u0111\u1ec7m c\u00f3 hi\u1ec7u qu\u1ea3. Nguy\u00ean nh\u00e2n gia t\u0103ng di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p c\u00f3 r\u1eebng trong giai \u0111o\u1ea1n 2001 – 2015 l\u00e0 do vi\u1ec7c \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 ch\u00ednh s\u00e1ch l\u00e2m nghi\u1ec7p v\u00e0 c\u00f4ng t\u00e1c qu\u1ea3n l\u00fd v\u00e0 b\u1ea3o v\u1ec7 r\u1eebng v\u00f9ng \u0111\u1ec7m VQG Xu\u00e2n S\u01a1n.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>\u1ea2nh Landsat, bi\u1ebfn \u0111\u1ed9ng, ch\u1ec9 s\u1ed1 th\u1ef1c v\u1eadt NDVI, \u0111\u1ea5t l\u00e2m nghi\u1ec7p, v\u00f9ng \u0111\u1ec7m, VQG Xu\u00e2n S\u01a1n<\/p>\n

 <\/td>\n<\/tr>\n

Applications of GIS and multi – temporal Landsat imageries to quantify changes in extents of forest land in Xuan Dai and Kim Thuong buffer zones, Xuan Son National Park<\/strong><\/p>\n

Remote sensing technology and GIS play an important role in monitoring and evaluating natural and environmental resources, particularly identifying changes in forest land. Using multi – temporal Landsat imageries in two buffer communes Xuan Dai and Kim Thuong in Xuan Son National Park has successfully built a database on forest land and status of forest maps of 2001, 2008 and 2015, spatially identified changes in forest resources and forest land during the periods of 2001 to 2008 and 2008 – 2015. As results show that the classification method using vegetation index as NDVI combined with unsupervised classification method and fieldwork have provided high reliability to construct changes in forest land in case of being in the absence of data to verify the historical images. Findings of quantifying changes in forest land through using multi – temporal Landsat images shows an area of \u200b\u200bforested land have risen sharply after the Xuan Son National Park established, an increase by 6801.5ha between 2001 and 2015, land without forest decreased by 3067.6ha, land by covered by other objects decreased by 3733.9ha. These findings show that active management of forest land have applied effectively in the buffer zone. Drivers of increase in forest land area during the period 2001 – 2015 identified has been due to the effective application of forest policy, forest management and protection in the buffer zone, Xuan Son National Park.<\/p>\n

Keywords:<\/i><\/b> Landsat Imagery, change, NDVI, forest land, buffer zone, Xuan Son National Park<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NGHI\u00caN C\u1ee8U X\u00c2Y D\u1ef0NG PH\u1ea6N M\u1ec0M T\u1ef0 \u0110\u1ed8NG PH\u00c1T HI\u1ec6N S\u1edaM CH\u00c1Y R\u1eeaNG T\u1eea TR\u1ea0M QUAN TR\u1eaeC M\u1eb6T \u0110\u1ea4T<\/strong><\/p>\n

Tr\u1ea7n Quang B\u1ea3o, Nguy\u1ec5n Tr\u1ecdng C\u01b0\u01a1ng, L\u00ea Ng\u1ecdc Ho\u00e0n, Mai H\u00e0 An
\nTr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m ph\u00e1t hi\u1ec7n ch\u00e1y r\u1eebng t\u1eeb tr\u1ea1m quan tr\u1eafc m\u1eb7t \u0111\u1ea5t c\u1ee7a Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p. Ph\u1ea7n m\u1ec1m s\u1eed d\u1ee5ng thu\u1eadt to\u00e1n ph\u00e1t hi\u1ec7n kh\u00f3i v\u00e0 l\u1eeda trong ph\u00e2n t\u00edch \u1ea3nh c\u00e1c \u0111\u00e1m ch\u00e1y, nh\u1eb1m tr\u00edch xu\u1ea5t ra c\u00e1c th\u00f4ng tin v\u1ec1 \u0111\u00e1m ch\u00e1y. Ph\u1ea7n m\u1ec1m c\u00f3 ch\u1ee9c n\u0103ng ph\u00e2n t\u00edch t\u01b0 li\u1ec7u \u1ea3nh \u0111a th\u1eddi gian, \u0111\u01b0\u1ee3c ch\u1ee5p t\u1eeb camera IP, nh\u1eb1m ph\u00e1t hi\u1ec7n v\u00e0 truy\u1ec1n tin ch\u00e1y r\u1eebng. Ph\u1ea7n m\u1ec1m \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t v\u00e0 v\u1eadn h\u00e0nh t\u1ef1 \u0111\u1ed9ng tr\u00ean m\u00e1y t\u00ednh, khi c\u00f3 c\u00e1c \u0111\u00e1m ch\u00e1y xu\u1ea5t hi\u1ec7n, ph\u1ea7n m\u1ec1m s\u1ebd t\u1ef1 \u0111\u1ed9ng ph\u00e2n t\u00edch \u1ea3nh ch\u1ee5p c\u00e1c \u0111\u00e1m ch\u00e1y, ph\u00e1t hi\u1ec7n v\u00e0 th\u00f4ng tin \u0111\u00e1m ch\u00e1y t\u1edbi ch\u1ee7 r\u1eebng, bao g\u1ed3m t\u1ecda \u0111\u1ed9 v\u00e0 \u1ea3nh \u0111\u00e1m ch\u00e1y th\u00f4ng qua tin nh\u1eafn (SMS) v\u00e0 th\u01b0 \u0111i\u1ec7n t\u1eed (Email, OTT). Ph\u1ea7n m\u1ec1m s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p c\u00e1c thu\u1eadt to\u00e1n ph\u00e1t hi\u1ec7n \u0111\u00e1m ch\u00e1y \u0111ang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean th\u1ebf gi\u1edbi. Ph\u1ea7n m\u1ec1m \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n tr\u00ean n\u1ec1n ng\u00f4n ng\u1eef C# v\u00e0 m\u1ed9t s\u1ed1 ch\u01b0\u01a1ng tr\u00ecnh h\u1ed7 tr\u1ee3 kh\u00e1c nh\u01b0: Visual Studio 10, Canon EDSDK Tutorial.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>Camera IP, ch\u00e1y r\u1eebng, ph\u00e1t hi\u1ec7n ch\u00e1y r\u1eebng, ph\u1ea7n m\u1ec1m<\/p>\n

 <\/td>\n<\/tr>\n

Designing an application software for early automatic detection of forest fires from ground monitoring station<\/strong><\/p>\n

This paper presents the results of software development to detect forest fire from ground monitoring stations. The software uses algorithms to detect smoke and fire by image processing in order to extract forest fire information. The software analyzes multi – time pictures taken from IP cameras to detect and communicate forest fire information. The software is installed and operating automatically on the computer. When fires occur, the software will automatically analyze images of the fire to detect fire information and transfer to forest owners, including coordinate system and photo of the fires via text messages (SMS) or email (Email, OTT). The software is used fire detection algorithms widely used in the world. The software was developed by C # language and some other support programs, such as Visual Studio 10, Canon EDSDK Tutorial. Software has been operated many times and works effectively in practice.<\/p>\n

Keywords:<\/i><\/b> Forest fire, forest fire detection, software, IP camera<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NGHI\u00caN C\u1ee8U PH\u00d2NG TR\u1eea S\u00c2U \u0110O (Biston suppressaria<\/i>) \u0102N L\u00c1 KEO TAI T\u01af\u1ee2NG TRONG PH\u00d2NG TH\u00cd NGHI\u1ec6M<\/strong><\/p>\n

B\u00f9i Quang Ti\u1ebfp, Nguy\u1ec5n Minh Ch\u00ed, Nguy\u1ec5n M\u1ea1nh H\u00e0, L\u00ea V\u0103n B\u00ecnh
\nTrung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT\u00ad<\/sub><\/p>\n

S\u00e2u \u0111o (Biston suppressaria<\/i>) l\u00e0 lo\u00e0i c\u00f4n tr\u00f9ng \u0103n l\u00e1 v\u00e0 g\u00e2y h\u1ea1i ch\u00ednh \u0111\u1ed1i v\u1edbi nhi\u1ec1u lo\u00e0i c\u00e2y nh\u01b0 Keo tai t\u01b0\u1ee3ng, <\/i>Tr\u1ea9u, <\/i>Ban tr\u1eafng, Ch\u00e8, \u0110\u1eadu tri\u1ec1u, <\/i>C\u1ecd kh\u1eb9t, <\/i>Ch\u00e0ng r\u00e0ng, S\u0103ng l\u1ebb… Trong s\u1ea3n xu\u1ea5t l\u00e2m nghi\u1ec7p t\u1ea1i Vi\u1ec7t Nam \u0111\u00e3 ghi nh\u1eadn S\u00e2u \u0111o ph\u00e1t d\u1ecbch, g\u00e2y h\u1ea1i r\u1eebng Lim xanh. Nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng \u1edf Vi\u1ec7t Nam t\u0103ng nhanh v\u00e0 \u0111\u00e3 xu\u1ea5t hi\u1ec7n S\u00e2u \u0111o \u0103n l\u00e1 g\u00e2y h\u1ea1i tr\u00ean di\u1ec7n t\u00edch r\u1ed9ng. Nghi\u00ean c\u1ee9u bi\u1ec7n ph\u00e1p ph\u00f2ng tr\u1eeb S\u00e2u \u0111o \u0103n l\u00e1 Keo tai t\u01b0\u1ee3ng \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf trong ph\u00f2ng th\u00ed nghi\u1ec7m v\u1edbi 6 c\u00f4ng th\u1ee9c g\u1ed3m: CT1 (Serpha 25EC, 5%); CT2 (Sec Saigon 10EC, 5%); CT3 (Nurelle 25\/2,5EC, 5%); CT4 (Bacillus thuringiensis<\/i> (115CFU\/ml)); CT5 (Bauveria bassiana<\/i> (115CFU\/ml)) v\u00e0 CT6 (\u0110\u1ed1i ch\u1ee9ng, phun b\u1eb1ng n\u01b0\u1edbc c\u1ea5t). K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y \u1edf c\u00e1c c\u00f4ng th\u1ee9c s\u1eed d\u1ee5ng thu\u1ed1c h\u00f3a h\u1ecdc, 100% s\u00e2u non \u0111\u00e3 b\u1ecb ch\u1ebft sau 1 ng\u00e0y phun thu\u1ed1c. T\u1ef7 l\u1ec7 s\u00e2u b\u1ecb ch\u1ebft \u1edf c\u00f4ng th\u1ee9c phun vi khu\u1ea9n B. thuringiensis<\/i> \u0111\u1ea1t 86,7% sau 6 ng\u00e0y v\u00e0 \u1edf c\u00f4ng th\u1ee9c phun n\u1ea5m B. bassiana<\/i> \u0111\u1ea1t 88,9% sau 8 ng\u00e0y, trong khi \u0111\u00f3, \u1edf c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng, s\u00e2u non v\u1eabn ph\u00e1t tri\u1ec3n v\u00e0 v\u00e0o nh\u1ed9ng b\u00ecnh th\u01b0\u1eddng. T\u1ef7 l\u1ec7 nh\u1ed9ng v\u0169 h\u00f3a ch\u1ec9 \u0111\u1ea1t 8,9% \u1edf CT4 v\u00e0 5,6% \u1edf CT5, trong khi \u0111\u00f3 \u1edf c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng, t\u1ef7 l\u1ec7 v\u0169 h\u00f3a \u0111\u1ea1t 91,1%. Bi\u1ec7n ph\u00e1p ph\u00f2ng tr\u1eeb sinh h\u1ecdc b\u1eb1ng vi khu\u1ea9n B. thuringiensis <\/i>v\u00e0 n\u1ea5m B. bassiana<\/i> tuy kh\u00f4ng cho k\u1ebft qu\u1ea3 nhanh nh\u01b0 d\u00f9ng thu\u1ed1c h\u00f3a h\u1ecdc nh\u01b0ng c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf s\u1ed1 l\u01b0\u1ee3ng s\u00e2u h\u1ea1i r\u00f5 r\u1ec7t, qua \u0111\u00f3 g\u00f3p ph\u1ea7n duy tr\u00ec c\u00e2n b\u1eb1ng sinh th\u00e1i v\u00e0 kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>Biston suppressaria, Bacillus thuringiensis, Bauveria bassiana<\/i>, Keo tai t\u01b0\u1ee3ng, ph\u00f2ng tr\u1eeb<\/p>\n

 <\/td>\n<\/tr>\n

Study of control on leaf – eating looper caterpillar (Biston suppressaria<\/i> Guen\u00e9e) damaging to Acacia mangium <\/i>in the laboratory<\/strong><\/p>\n

The looper caterpillar (Biston suppressaria<\/i>) is main insect that damages on the leaves of many species such as Acacia mangium<\/i>, Aleurites montana<\/i>, Bauhinia variegata<\/i>, Camellia sinensis<\/i>, Cajanus indicus<\/i>, Dalbergia assamica<\/i>, Dodonaea viscosa<\/i> and Lagerstroemia indica<\/i>. Forestry production in Vietnam has recored the outbreaks of the looper caterpillar, damaging Erythrophleum fordii<\/i> plantation. In recent years, the area of Acacia mangium<\/i> in Vietnam has rapidly increased and has observed with leaf – eating looper caterpillar on a large area. The suppressing approach study to the looper caterpillar were conducted in the laboratory with 6 experiments with repeating 3 times, including experiment 1 (Serpha 25EC, 5%); experiment 2 (Saigon Sec 10EC, 5%); experiment 3 (Nurelle 25\/2,5EC, 5%); experiment 4 (Bacillus thuringiensis<\/i> (115CFU\/ml)); experiment 5 (Bauveria bassiana<\/i> (115CFU\/ml)) and experiment 6 (control, only spray with water). The study showed that efficiency in the experiment sprayed with chemical substances, 100% larva was died after 1 day. With B. thuringiensis <\/i>bacteria <\/i>reaching 86.7% after 6 days. While 88.9% of larva was died after 8 days being sprayed with B. bassiana<\/i>. On the other side, larva still grew normally and turned into pupae stage in the experiment 6. After experiment, percentage of emerging moths only made up 8.9% and 5.6% respectively. This figure in experiment 5 reached 91.1%. Although biological control is less effective than chemical control, this approach should be used to reduce population of the looper caterpillar and keep sustainable eco – environment.<\/p>\n

Key words:<\/i><\/b> Acacia mangium, Bacillus thuringiensis, Bauveria bassiana<\/i>, Biston suppressaria<\/i>, control<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

VI PH\u1ea0M L\u00c2M LU\u1eacT TRONG QU\u1ea2N L\u00dd B\u1ea2O V\u1ec6 R\u1eeaNG \u0110\u1eb6C D\u1ee4NG KHU V\u1ef0C T\u00c2Y B\u1eaeC VI\u1ec6T NAM<\/strong><\/p>\n

Nguy\u1ec5n B\u00e1 Ng\u00e3i\u00ad\u00ad1<\/sup>, \u0110\u1ed7 Anh Tu\u00e2n2<\/sup>, V\u0169 Th\u1ecb B\u00edch Thu\u1eadn2
\n<\/sup>1<\/sup><\/i>T\u1ed5ng C\u1ee5c L\u00e2m nghi\u1ec7p. Ng\u1ecdc H\u00e0, Ba \u0110\u00ecnh, H\u00e0 N\u1ed9i,
\n2<\/sup>Tr\u01b0\u1eddng C\u00e1n b\u1ed9 qu\u1ea3n l\u00fd N\u00f4ng nghi\u1ec7p v\u00e0 PTNT I<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y r\u1eebng t\u1ef1 nhi\u00ean khu v\u1ef1c T\u00e2y B\u1eafc \u0111ang \u0111\u1ee9ng tr\u01b0\u1edbc nguy c\u01a1 b\u1ecb suy gi\u1ea3m nghi\u00eam tr\u1ecdng. T\u00ecnh tr\u1ea1ng ph\u00e1 r\u1eebng l\u00e0m n\u01b0\u01a1ng r\u1eaby, khai th\u00e1c l\u00e2m s\u1ea3n m\u1ed9t c\u00e1ch qu\u00e1 m\u1ee9c, thi\u1ebfu s\u1ef1 ki\u1ec3m so\u00e1t c\u1ee7a c\u00e1c c\u01a1 quan ch\u1ee9c n\u0103ng \u0111\u00e3 d\u1eabn \u0111\u1ebfn nh\u1eefng di\u1ec7n t\u00edch r\u1eebng t\u1ef1 nhi\u00ean \u1edf c\u00e1c v\u01b0\u1eddn qu\u1ed1c gia (VQG), khu b\u1ea3o t\u1ed3n (KBT) b\u1ecb m\u1ea5t ho\u1eb7c b\u1ecb suy gi\u1ea3m v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng. VQG Ho\u00e0ng Li\u00ean, Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean (KBTTN) M\u01b0\u1eddng Nh\u00e9, KBTTN Xu\u00e2n Nha c\u0169ng kh\u00f4ng n\u1eb1m ngo\u00e0i nh\u1eefng quy lu\u1eadt tr\u00ean. \u0110\u00e2y l\u00e0 3 KBT c\u00f3 di\u1ec7n t\u00edch r\u1eebng t\u1ef1 nhi\u00ean l\u1edbn trong khu v\u1ef1c, mang nh\u1eefng \u0111\u1eb7c tr\u01b0ng v\u1ec1 sinh th\u00e1i r\u1eebng, c\u00f3 gi\u00e1 tr\u1ecb \u0111a d\u1ea1ng sinh h\u1ecdc cao nh\u01b0ng l\u1ea1i \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1ecb suy gi\u1ea3m c\u1ea3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng. Trong th\u1eddi gian 4 n\u0103m t\u1eeb 2011 \u0111\u1ebfn 2014, t\u1ea1i 3 \u0111i\u1ec3m nghi\u00ean c\u1ee9u c\u00f3 t\u1ea5t c\u1ea3 323 v\u1ee5 vi ph\u1ea1m l\u00e2m lu\u1eadt, trong \u0111\u00f3 34,05% s\u1ed1 v\u1ee5 l\u00e0 mua b\u00e1n, v\u1eadn chuy\u1ec3n l\u00e2m s\u1ea3n v\u00e0 l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 (LSNG) tr\u00e1i ph\u00e9p, 31,27% s\u1ed1 v\u1ee5 ph\u00e1 r\u1eebng tr\u00e1i ph\u00e9p. Ngo\u00e0i ra, c\u00e1c v\u1ee5 vi ph\u1ea1m c\u00f2n t\u1eadp trung v\u00e0o c\u00e1c nguy\u00ean nh\u00e2n nh\u01b0 s\u0103n b\u1eaft v\u00e0 bu\u00f4n b\u00e1n \u0111\u1ed9ng v\u1eadt hoang d\u00e3, khai th\u00e1c l\u00e2m s\u1ea3n tr\u00e1i ph\u00e9p v\u00e0 c\u00e1c vi ph\u1ea1m v\u1ec1 ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y r\u1eebng.<\/p>\n

T\u1eeb kho\u00e1<\/b>: Qu\u1ea3n l\u00fd b\u1ea3o v\u1ec7 r\u1eebng, r\u1eebng \u0111\u1eb7c d\u1ee5ng, vi ph\u1ea1m l\u00e2m lu\u1eadt, v\u00f9ng T\u00e2y B\u1eafc<\/p>\n

 <\/td>\n<\/tr>\n

Forest law violations in the management of special forest protection area Northwest Vietnam<\/strong><\/p>\n

In recent years, the natural forests in the Northwest region are at risk from critical degredation due to slash and burn cultivation, over – exploitation, and lack of management. Hoang Lien National Park, Muong Nhe and Xuan Nha Nature Reserve are protected areas in the Northwest with the high values of biodiversity and ecosystems, they are also facing reduce quantity and quality. During the four years from 2011 to 2014, there are 323 violations of forest law in there, Therein 34.05% of the buying and selling services woods and non – timber forest products shipped illegally, 31.27% of illegal deforestation. Besides the violations focused primarily deforestation for cultivation, hunting and wildlife trade, illegal forest exploitation and the control of forest fire.<\/p>\n

Keywords:<\/i><\/b> Forest protection and management, special – use forests, forest violations, Northwest<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110\u1ed8 B\u1ec0N T\u1ef0 NHI\u00caN C\u1ee6A G\u1ed6 TH\u1eca (Diospyros decandra<\/i> Lour) L\u00c0M M\u1ed8C B\u1ea2N T\u1ea0I CH\u00d9A B\u1ed4 \u0110\u00c0 V\u00c0 CH\u00d9A V\u0128NH NGHI\u00caM, T\u1ec8NH B\u1eaeC GIANG<\/strong><\/p>\n

Nguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc1<\/sup>, B\u00f9i Th\u1ecb Th\u1ee7y, Ho\u00e0ng Th\u1ecb T\u00e1m2
\n<\/sup>1<\/sup><\/i> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/i> <\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ed9c b\u1ea3n l\u00e0 di s\u1ea3n v\u00f4 gi\u00e1 c\u1ee7a d\u00e2n t\u1ed9c. Ngo\u00e0i gi\u00e1 tr\u1ecb v\u1ec1 Ph\u1eadt gi\u00e1o, m\u1ed9c b\u1ea3n c\u00f2n ph\u1ea3n \u00e1nh tr\u00ecnh \u0111\u1ed9 kh\u1eafc \u0111i\u00eau luy\u1ec7n, tr\u00ecnh \u0111\u1ed9 m\u1ef9 thu\u1eadt, v\u0103n h\u00f3a c\u1ee7a ng\u01b0\u1eddi Vi\u1ec7t x\u01b0a. Hi\u1ec7n nay, t\u1ea1i B\u1eafc Giang c\u00f3 2 kho m\u1ed9c b\u1ea3n \u0111ang \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef, b\u1ea3o qu\u1ea3n t\u1ea1i ch\u00f9a V\u0129nh Nghi\u00eam v\u00e0 ch\u00f9a B\u1ed5 \u0110\u00e0. Nh\u1eefng t\u01b0 li\u1ec7u l\u1ecbch s\u1eed \u0111\u01b0\u1ee3c ghi l\u1ea1i v\u00e0 nh\u1eefng k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh ch\u1ea5t li\u1ec7u g\u1ed7 l\u00e0m M\u1ed9c b\u1ea3n c\u1ee7a ch\u00f9a V\u0129nh Nghi\u00eam v\u00e0 B\u1ed5 \u0110\u00e0 l\u00e0 g\u1ed7 Th\u1ecb (Diospyros decandra<\/i> Lour). V\u1edbi \u0111\u1eb7c \u0111i\u1ec3m m\u1ec1m khi m\u1edbi ch\u1eb7t h\u1ea1 nh\u01b0ng \u0111anh c\u1ee9ng khi kh\u00f4, th\u1edb g\u1ed7 m\u1ecbn, s\u00e1ng m\u00e0u, kh\u00f4ng c\u00f3 l\u00f5i d\u00e1c ph\u00e2n bi\u1ec7t… thu\u1eadn l\u1ee3i cho qu\u00e1 tr\u00ecnh ch\u1ea1m kh\u1eafc ch\u1ebf t\u00e1c M\u1ed9c b\u1ea3n, \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o cho c\u00e1c n\u00e9t ch\u1eef tr\u00ean M\u1ed9c b\u1ea3n v\u00e0 c\u1ea3 t\u1ea5m M\u1ed9c b\u1ea3n \u0111\u01b0\u1ee3c b\u1ec1n l\u00e2u theo th\u1eddi gian. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y g\u1ed7 Th\u1ecb c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean trung b\u00ecnh v\u1edbi n\u1ea5m m\u1ee5c Pleurotus ostreatus <\/i>Kumm. G\u1ed7 Th\u1ecb c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean trung b\u00ecnh v\u1edbi m\u1ed1i Coptotermes gestroi <\/i>Wasmann. G\u1ed7 Th\u1ecb c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean k\u00e9m v\u1edbi n\u1ea5m m\u1ed1c Aspergillus niger <\/i>Van Tieghem. \u0110\u1ec3 b\u1ea3o t\u1ed3n, ph\u00e1t huy gi\u00e1 tr\u1ecb di s\u1ea3n m\u1ed9c b\u1ea3n, c\u1ea7n ph\u1ea3i c\u00f3 c\u00e1c gi\u1ea3i ph\u00e1p ki\u1ec3m so\u00e1t sinh v\u1eadt h\u1ea1i g\u1ed7 \u0111\u1ed3ng th\u1eddi \u0111i\u1ec1u ti\u1ebft ti\u1ec3u kh\u00ed h\u1eadu trong nh\u00e0 kho l\u01b0u tr\u1eef \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c nguy c\u01a1 g\u00e2y h\u1ea1i t\u1edbi m\u1ed9c b\u1ea3n.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> Diospyros decandra<\/i> Lour, \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean, m\u1ed9c b\u1ea3n<\/p>\n

 <\/td>\n<\/tr>\n

Natural durability of wood used for making Woodblocks in Bo Da and Vinh Nghiem pagoda in Bac Giang province<\/strong><\/p>\n

Woodblocks are invaluable heritage of Vietnam. Besides religious importance the woodblocks are the cultural products, in which the artistic values of the ancient wood curving technique are reflected. In Bac Giang province there conserved the most important woodblocks in Vinh Nghiem and Bo Da pagodas. Historical Data and research findings showed that the existing woodblocks are originated from tree species Diospyros decandra<\/i> Lour. The characteristic of wood is soft when just fallen but hardened when dried, with fine wood grain, light, nondistinctive sapwood and heart wood… Wood from Diospyros decandra<\/i> Lour is suitable for making woodblocks, ensuring the durability for engraving. Our studies have proved that Diospyros decandra<\/i> Lour is moderately resistant to Pleurotus ostreatus <\/i>Kumm, as well as to Coptotermes gestroi <\/i>Wasmann, but unresisting to Aspergillus niger <\/i>Van Tieghem. It is recommended that the storehouse of wood blocks should apply the measures to control harmful organisms and to minimize the risk of harm to woodblock.<\/p>\n

Keywords:<\/i><\/b> <\/i><\/b>Diospyros decandra<\/i> Lour, natural durability, woodblock<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

M\u1ed8T S\u1ed0 T\u00cdNH CH\u1ea4T CH\u1ee6 Y\u1ebeU C\u1ee6A G\u1ed6 TH\u1eca (Diospyros decandra<\/i> Lour) D\u00d9NG L\u00c0M M\u1ed8C B\u1ea2N L\u01afU GI\u1eee T\u1ea0I CH\u00d9A B\u1ed4 \u0110\u00c0 V\u00c0 CH\u00d9A V\u0128NH NGHI\u00caM T\u1ec8NH B\u1eaeC GIANG<\/strong><\/p>\n

Nguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc1<\/sup> Nguy\u1ec5n T\u1eed Kim2<\/sup>, L\u00ea Qu\u00fd Th\u1eafng2<\/sup>,
\nNguy\u1ec5n Th\u1ecb Tr\u1ecbnh2<\/sup>, Nguy\u1ec5n Tr\u1ecdng Ngh\u0129a2
\n<\/sup>1<\/sup><\/i> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/i><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

G\u1ed7 c\u00e2y Th\u1ecb (Diospyros decandra<\/i> Lour) \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn d\u00f9ng trong ch\u1ebf t\u00e1c M\u1ed9c b\u1ea3n, di s\u1ea3n v\u0103n h\u00f3a qu\u00fd \u0111\u00e3 t\u1ed3n t\u1ea1i h\u00e0ng tr\u0103m n\u0103m t\u1ea1i ch\u00f9a B\u1ed3 \u0110\u00e0 v\u00e0 V\u0129nh Nghi\u00eam, t\u1ec9nh B\u1eafc Giang. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u t\u00ednh ch\u1ea5t g\u1ed7 Th\u1ecb \u0111\u00e3 x\u00e1c \u0111\u1ecbnh g\u1ed7 c\u00f3 th\u1edb m\u1ecbn, \u0111\u1ed3ng \u0111\u1ec1u, kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang cao, kh\u1ea3 n\u0103ng ch\u1ecbu va ch\u1ea1m t\u1ed1t. G\u1ed7 sau khi ph\u01a1i, s\u1ea5y \u0111\u1ebfn \u0111\u1ed9 \u1ea9m c\u00e2n b\u1eb1ng trong kh\u00f4ng kh\u00ed (kho\u1ea3ng 13 – 15%) c\u00f3 \u0111\u1ed9 h\u00fat \u1ea9m v\u00e0 h\u00fat n\u01b0\u1edbc th\u1ea5p. Do v\u1eady, g\u1ed7 Th\u1ecb r\u1ea5t ph\u00f9 h\u1ee3p l\u00e0m M\u1ed9c b\u1ea3n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u1eddi gian s\u1eed d\u1ee5ng l\u00e2u d\u00e0i v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng b\u1ea3n in \u0111\u1ec1u v\u00e0 r\u00f5 n\u00e9t. Tuy nhi\u00ean, g\u1ed7 Th\u1ecb c\u00f3 h\u1ec7 s\u1ed1 co r\u00fat th\u1ec3 t\u00edch trung b\u00ecnh, t\u1ef7 l\u1ec7 gi\u00e3n n\u1edf v\u00e0 co r\u00fat g\u1ed7 theo chi\u1ec1u ti\u1ebfp tuy\u1ebfn so v\u1edbi chi\u1ec1u xuy\u00ean t\u00e2m cao n\u00ean M\u1ed9c b\u1ea3n c\u1ea7n \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef trong m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 h\u1ea1n ch\u1ebf c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 n\u1ee9t v\u1ee1, cong, v\u00eanh x\u1ea3y ra. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, c\u01a1 h\u1ecdc v\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a g\u1ed7 Th\u1ecb g\u00f3p ph\u1ea7n cung c\u1ea5p c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c \u0111\u1ec1 xu\u1ea5t gi\u1ea3i ph\u00e1p t\u1ed5ng h\u1ee3p b\u1ea3o qu\u1ea3n M\u1ed9c b\u1ea3n t\u1ea1i ch\u00f9a V\u0129nh Nghi\u00eam v\u00e0 B\u1ed5 \u0110\u00e0.<\/p>\n

T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>Th\u1ecb, M\u1ed9c b\u1ea3n, t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, s\u1eed d\u1ee5ng g\u1ed7<\/p>\n

 <\/td>\n<\/tr>\n

Some properties of wood of Diospyros decandra<\/i> Lour used for making wood – blocks conserved at Bo Da and Vinh Nghiem pagodas in Bac Giang province<\/strong><\/p>\n

Wood of Diospyros decandra <\/i>Lour <\/i>has been chosen for use in producing woodblocks, the precious cultural heritage, existing for hundreds of years at Vinh Nghiem and Bo Da pagodas in Bac Giang province. Wood of Diospyros decandra <\/i>was clarified that the wood is smooth, uniform, high density and good impact resistance. Wood after drying, air – dry moisture content around 13 – 15% has a low moisture absorption and water absorption. Therefore, it is the suitable timber for producing woodblocks to ensure the long – term of use and the quality of printing. However, the volumetric shrinkage coefficient is medium, the tangential direction\/radial direction ratio of shringkage and swelling is high so the woodblocks highly recommended to be kept in an environment with stable temperature and humidity to limit the nature of defects such as cracks, curve or buckle. The physical, mechanical properties and chemical composition of the wood of Diospyros decandra<\/i> are the bases for the proposed measures for preserving woodblocks at Vinh Nghiem and Bo Da pagodas.<\/p>\n

Key words:<\/b> Diospyros decandra<\/i>, <\/b>wood – block, wood physical properties, wood machenical properties, wood chemical components, wood utilization<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 3 – 2016 1 Nh\u00e2n gi\u1ed1ng in vitro c\u00e1c gia \u0111\u00ecnh \u01b0u vi\u1ec7t Keo l\u00e1 li\u1ec1m (Acacia crassicarpa A. Cunn. Ex Benth.) ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng Ph\u00ed H\u1ed3ng H\u1ea3i V\u0103n Thu Huy\u1ec1n In vitro propagation for superior families of Acacia crassicarpa A. Cunn. Ex Benth. providing for clonal […]<\/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\/1523"}],"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=1523"}],"version-history":[{"count":8,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1523\/revisions"}],"predecessor-version":[{"id":1711,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1523\/revisions\/1711"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}