{"id":1481,"date":"2016-01-19T14:04:38","date_gmt":"2016-01-19T07:04:38","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=1481"},"modified":"2023-11-23T12:25:57","modified_gmt":"2023-11-23T05:25:57","slug":"vietnam-journal-of-forest-science-number-4-2015","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2016\/01\/vietnam-journal-of-forest-science-number-4-2015\/","title":{"rendered":"Vietnam Journal of Forest Science Number 4-2015"},"content":{"rendered":"

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

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 4 – 2015<\/b><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00a01<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng hom c\u00e1c gi\u1ed1ng b\u1ea1ch \u0111\u00e0n lai m\u1edbi<\/td>\nNguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng, Nguy\u1ec5n Minh Ng\u1ecdc, Nguy\u1ec5n Th\u1ecb Linh \u0110am<\/td>\nResearch on cutting propagation of new eucalyptus hybrid<\/td>\n3989<\/td>\n<\/tr>\n
2<\/td>\nNghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc x\u1eed l\u00fd h\u1ea1t \u0111\u1ebfn t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m v\u00e0 che s\u00e1ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y M\u1ea1y Ch\u00e2u trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m<\/td>\nV\u0169 V\u0103n Thu\u1eadn, L\u00f2 Th\u1ecb H\u1ed3ng Xoan<\/td>\nResearch on influence of treated water temperature to germination and shading to growth of Carya tonkinensis Lecomte, 1921 in nursery<\/td>\n3997<\/td>\n<\/tr>\n
3<\/td>\nSinh tr\u01b0\u1edfng c\u1ee7a keo lai tr\u00ean c\u00e1c d\u1ea1ng b\u00e3i th\u1ea3i sau khai th\u00e1c bauxite t\u1ea1i m\u1ecf bauxite L\u1ed9c Ph\u00e1t, B\u1ea3o L\u1ed9c V\u00e0 T\u00e2n Rai, B\u1ea3o L\u00e2m, T\u1ec9nh L\u00e2m \u0111\u1ed3ng<\/td>\nPh\u1ea1m Tr\u1ecdng Nh\u00e2n, Nguy\u1ec5n Th\u00e0nh M\u1ebfn, L\u01b0u Th\u1ebf Trung<\/td>\nGrowth of A. mangium <\/i>\uf0b4 A. auriculiformis <\/i>in mine wasteland at Loc Phat, Bao Loc and Tan Rai, Bao Lam bauxite mine, Lam Dong province<\/td>\n4004<\/td>\n<\/tr>\n
4<\/td>\nX\u00e1c \u0111\u1ecbnh t\u00ean khoa h\u1ecdc cho c\u00e2y Nao hay Chua Kh\u00e9t \u1edf Qu\u1ea3ng B\u00ecnh<\/td>\nPh\u1ea1m H\u1ed3ng Th\u00e1i, Nguy\u1ec5n V\u0103n Huy, Nguy\u1ec5n Tu\u1ea5n Anh, Nguy\u1ec5n Th\u00e0nh T\u00e2y, Ho\u00e0ng Ch\u00ed Thanh<\/td>\nRe – Identification of scientific name for the tree species \u201cChua khet\u201d or \u201cNao\u201d in Quang Binh province<\/td>\n4012<\/td>\n<\/tr>\n
5<\/td>\nImpatiens parvisepala (Balsaminaceae): A newly recorded from Vietnam<\/td>\nHoang Thanh Son, Trinh Ngoc Bon, Nguyen Quang Hung, Pham Van Vinh and Nguyen Thi Van Anh<\/td>\nImpatiens parvisepala (Balsaminaceae): M\u1ed9t lo\u00e0i b\u00f3ng n\u01b0\u1edbc m\u1edbi cho khu h\u1ec7 th\u1ef1c v\u1eadt Vi\u1ec7t Nam<\/td>\n4018<\/td>\n<\/tr>\n
6<\/td>\n\u0110a d\u1ea1ng chi Ri\u1ec1ng (allpinia) v\u00e0 Sa nh\u00e2n (amomum) thu\u1ed9c h\u1ecd G\u1eebng (zingiberaceae) \u1edf B\u1eafc Trung B\u1ed9<\/td>\nL\u00ea Th\u1ecb H\u01b0\u01a1ng, Tr\u1ea7n Th\u1ebf B\u00e1ch<\/td>\nDiversity of the genera alpinia and amomum (Zngiberaceae) in North center Vietnam<\/td>\n4021<\/td>\n<\/tr>\n
7<\/td>\nNghi\u00ean c\u1ee9u th\u00e0nh ph\u1ea7n c\u00e1c lo\u00e0i s\u00e2u, b\u1ec7nh h\u1ea1i tr\u00ean c\u00e2y xoan nh\u1eeb Choerospondias axillaris <\/i>(Roxb.) Burtt & Hill<\/td>\nL\u1ea1i Thanh H\u1ea3i, L\u00ea V\u0103n B\u00ecnh<\/td>\nInsect pests and diseaes of choerospondias axillaris<\/td>\n4027<\/td>\n<\/tr>\n
8<\/td>\nM\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, sinh h\u1ecdc c\u1ee7a s\u00e2u tre (Omphisa fuscidentalis Hampson)<\/td>\nHo\u00e0ng Th\u1ecb H\u1ed3ng Nghi\u1ec7p, Nguy\u1ec5n Th\u1ebf Nh\u00e3<\/td>\nSome morphological, biological characteristics of bamboo caterpillar (Omphisa fuscidentalis Hampson)<\/td>\n4033<\/td>\n<\/tr>\n
9<\/td>\n\u0110\u1ed9ng th\u00e1i t\u00e1i sinh t\u1ef1 nhi\u00ean 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<\/td>\nNguy\u1ec5n \u0110\u1eafc Tri\u1ec3n, Tr\u1ea7n V\u0103n Con, B\u00f9i Th\u1ebf \u0110\u1ed3i, Ng\u00f4 Th\u1ebf Long<\/td>\nRegeneration dynamics of broadleaf evergreen forests in Xuan Son National Park, Phu Tho provice<\/td>\n4040<\/td>\n<\/tr>\n
10<\/td>\nK\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt ch\u0103m s\u00f3c, th\u1eddi v\u1ee5 tr\u1ed3ng r\u1eebng v\u00e0 ti\u00eau chu\u1ea9n c\u00e2y con Keo l\u00e1 li\u1ec1m (Acacia crassicarpa) tr\u00ean v\u00f9ng \u0111\u1ea5t c\u00e1t khu v\u1ef1c B\u1eafc Trung B\u1ed9<\/td>\n\u0110\u1eb7ng Th\u00e1i D\u01b0\u01a1ng, \u0110\u1eb7ng Th\u00e1i Ho\u00e0ng<\/td>\nResult of studying tending technique, planting season and seedling age of Acacia crassicarpa in the Central Coastal Area<\/td>\n4048<\/td>\n<\/tr>\n
11<\/td>\nSinh tr\u01b0\u1edfng, n\u0103ng su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng kinh doanh r\u1eebng tr\u1ed3ng g\u1ed7 l\u1edbn m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y ch\u1ee7 l\u1ef1c \u1edf B\u00ecnh \u0110\u1ecbnh V\u00e0 Ph\u00fa Y\u00ean, v\u00f9ng Nam Trung B\u1ed9<\/td>\nNguy\u1ec5n Xu\u00e2n Qu\u00e1t, Ph\u1ea1m \u0110\u00ecnh S\u00e2m, Cao V\u0103n L\u1ea1ng<\/td>\nGrowth and productivity of timber plantations of some main species in Binh Dinh and Phu Yen, South Central region<\/td>\n4056<\/td>\n<\/tr>\n
12<\/td>\nNghi\u00ean c\u1ee9u nh\u1eadn th\u1ee9c v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u1ed9ng \u0111\u1ed3ng b\u1ea3n \u0111\u1ecba \u0111\u1ebfn lo\u00e0i vo\u1ecdc Ch\u00e0 v\u00e1 ch\u00e2n x\u00e1m (Pygathrix cinerea) \u1edf V\u01b0\u1eddn qu\u1ed1c gia Kon Ka Kinh, t\u1ec9nh Gia Lai<\/td>\nHo\u00e0ng V\u0103n Ch\u01b0\u01a1ng, H\u00e0 Th\u0103ng Long, Tr\u1ea7n Th\u1ecb Kim Ly, Nguy\u1ec5n Th\u1ecb Kim Y\u1ebfn<\/td>\nStudy on the indigenous community awareness and impact on grey-shanked douc langur (Pygathrix cinerea) in Kon Ka Kinh National Park, Gia Lai province<\/td>\n4063<\/td>\n<\/tr>\n
13<\/td>\nT\u00ednh \u0111a d\u1ea1ng th\u00e0nh ph\u1ea7n lo\u00e0i th\u00fa t\u1ea1i Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean Ng\u1ecdc S\u01a1n – Ng\u1ed5 Lu\u00f4ng, t\u1ec9nh H\u00f2a B\u00ecnh<\/td>\n\u0110\u1ed3ng Thanh H\u1ea3i<\/td>\nDiversity of mammals In Ngoc Son-Ngo Luong Nature Reserve, Hoa Binh province<\/td>\n4072<\/td>\n<\/tr>\n
14<\/td>\n\u0110\u00e1nh gi\u00e1 \u0111a d\u1ea1ng sinh h\u1ecdc, c\u1ea3nh quan v\u00e0 ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n du l\u1ecbch sinh th\u00e1i t\u1ea1i Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean Kim H\u1ef7 t\u1ec9nh B\u1eafc K\u1ea1n<\/td>\n\u0110\u1ed3ng Thanh H\u1ea3i, Ph\u00f9ng V\u0103n Ph\u00ea<\/td>\nAssessment of biodiversity, landscapes and potential ecotourism development in Kim Hy Nature Reserve, Bac Kan province<\/td>\n4084<\/td>\n<\/tr>\n
15<\/td>\n\u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 kinh t\u1ebf, x\u00e3 h\u1ed9i v\u00e0 m\u00f4i tr\u01b0\u1eddng c\u1ee7a m\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t t\u1ea1i huy\u1ec7n Th\u1ea1ch H\u00e0, t\u1ec9nh H\u00e0 T\u0129nh<\/td>\nNguy\u1ec5n H\u1ea3i H\u00f2a, V\u00f5 Anh \u0110\u1ee9c<\/td>\nSocio-economic and environmental assessments of forest plantation models in Thach Ha district, Ha Tinh province<\/td>\n4095<\/td>\n<\/tr>\n
16<\/td>\nKh\u1ea3 n\u0103ng n\u00e2ng cao \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a g\u1ed7 b\u1eb1ng s\u01a1n Polyurethane ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u nano<\/td>\nB\u00f9i V\u0103n \u00c1i, Nguy\u1ec5n Duy V\u01b0\u1ee3ng, Ho\u00e0ng Trung Hi\u1ebfu<\/td>\nDimensional stability of wood through nanomaterials dispered polyurethane coating<\/td>\n4110<\/td>\n<\/tr>\n
17<\/td>\n\u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng g\u1ed7 C\u00f3c h\u00e0nh (Azadirachta excelsa (Jack) Jacobs)<\/td>\nNguy\u1ec5n T\u1eed Kim, Nguy\u1ec5n Tr\u1ecdng Ngh\u0129a, H\u00e0 Th\u1ecb M\u1eebng<\/td>\nAssessment of the possibility in wood utilization of Azadirachta excelsa (Jack) Jacobs<\/td>\n4116<\/td>\n<\/tr>\n
18<\/td>\nNghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t g\u1ed7 c\u01a1 b\u1ea3n c\u1ee7a 5 d\u00f2ng B\u1ea1ch \u0111\u00e0n lai nh\u00e2n t\u1ea1o tr\u1ed3ng t\u1ea1i Tr\u1ea1m Th\u1ef1c nghi\u1ec7m l\u00e2m sinh B\u00e0u B\u00e0ng, t\u1ec9nh B\u00ecnh D\u01b0\u01a1ng<\/td>\nNguy\u1ec5n T\u1eed Kim, Nguy\u1ec5n Th\u1ecb Tr\u1ecbnh, V\u00f5 \u0110\u1ea1i H\u1ea3i, Nguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng<\/td>\nStudy on fundamental properties of wood of 5 eucalyptus hybrid clones by artificial hybridization planted in Bau Bang, Binh Duong<\/td>\n4122<\/td>\n<\/tr>\n
19<\/td>\nSinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 c\u1ee7a c\u00e1c d\u00f2ng keo lai v\u00e0 b\u1ea1ch \u0111\u00e0n lai m\u1edbi ch\u1ecdn t\u1ea1o \u1edf Vi\u1ec7t Nam<\/td>\nNguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng, \u0110\u1ed7 Th\u1ecb Minh Hi\u1ec3n, Nguy\u1ec5n Minh Ng\u1ecdc<\/td>\nGrowth and wood properties of new clones of acacia and Eucalyptus hybrid<\/td>\n4132<\/td>\n<\/tr>\n
20<\/td>\nM\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u00e2y \u0111\u1ee9ng v\u00e0 \u0111\u1eb7c t\u00ednh ch\u1ee7 y\u1ebfu c\u1ee7a g\u1ed7 lo\u00e0i xoan nh\u1eeb Choerospondias axillaris (Roxb.) Burtt & Hill<\/td>\nL\u1ea1i Thanh H\u1ea3i, \u0110\u1ed7 V\u0103n B\u1ea3n<\/td>\nProperties of Choerospondias axillaris (roxb.) Burtt & hill wood and timber<\/td>\n4144<\/td>\n<\/tr>\n
21<\/td>\nHi\u1ec7n tr\u1ea1ng m\u1ed9c b\u1ea3n ph\u1eadt gi\u00e1o t\u1ea1i ch\u00f9a B\u1ed5 \u0110\u00e0 v\u00e0 ch\u00f9a V\u0129nh Nghi\u00eam t\u1ec9nh B\u1eafc Giang<\/td>\nNguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc, Ho\u00e0ng Trung Hi\u1ebfu, L\u00ea Ng\u1ecdc Hoan<\/td>\nCurrent situation of the buddhistical woodblocks in Bo Da pagoda and Vinh Nghiem pagoda in Bac Giang province<\/td>\n4151<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0 NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG HOM C\u00c1C GI\u1ed0NG B\u1ea0CH \u0110\u00c0N LAI M\u1edaI<\/b><\/p>\n

Nguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng, Nguy\u1ec5n Minh Ng\u1ecdc, Nguy\u1ec5n Th\u1ecb Linh \u0110am
\nVi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p t\u1ea1o ch\u1ed3i, gi\u00e2m hom, ki\u1ec3m so\u00e1t n\u01b0\u1edbc t\u01b0\u1edbi cho c\u00e1c c\u00e2y tr\u1ed9i (d\u00f2ng) thu\u1ed9c c\u00e1c t\u1ed5 h\u1ee3p lai gi\u1eefa B\u1ea1ch \u0111\u00e0n uro (E. urophylla<\/i>) lai v\u1edbi B\u1ea1ch \u0111\u00e0n li\u1ec5u (E. exserta<\/i>) k\u00fd hi\u1ec7u UE, B\u1ea1ch \u0111\u00e0n uro lai v\u1edbi B\u1ea1ch \u0111\u00e0n grandis (E. grandis<\/i>) k\u00fd hi\u1ec7u UG, B\u1ea1ch \u0111\u00e0n uro lai v\u1edbi B\u1ea1ch \u0111\u00e0n camal
\n(E. camaldulensis<\/i>) k\u00fd hi\u1ec7u UC cho th\u1ea5y: (1) \u0110\u1ed1i v\u1edbi c\u1ea3 3 ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o ch\u1ed3i (ken c\u00e2y, c\u1eaft c\u00e2y v\u00e0 c\u1eaft hom tr\u1ef1c ti\u1ebfp \u1edf c\u00e2y 6 th\u00e1ng tu\u1ed5i) m\u1ed7i m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec1u c\u00f3 nh\u1eefng \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m kh\u00e1c nhau, v\u00ec v\u1eady t\u00f9y thu\u1ed9c v\u00e0o ho\u00e0n c\u1ea3nh c\u1ee5 th\u1ec3 m\u00e0 c\u00f3 th\u1ec3 ch\u1ecdn m\u1ed9t trong 3 ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 ti\u1ebfn h\u00e0nh th\u00ed nghi\u1ec7m; (2) Ph\u01b0\u01a1ng ph\u00e1p tr\u1ed3ng c\u00e2y \u0111\u1ea7u d\u00f2ng ra \u0111\u1ea5t, c\u00f3 m\u00e1i che khi m\u01b0a v\u00e0 h\u1ea1n ch\u1ebf t\u01b0\u1edbi n\u01b0\u1edbc t\u1eeb khi c\u00e2y b\u1eaft \u0111\u1ea7u ra ch\u1ed3i 2 – 3cm t\u1edbi khi c\u1eaft hom l\u00e0 ph\u01b0\u01a1ng ph\u00e1p tr\u1ed3ng v\u00e0 ki\u1ec3m so\u00e1t n\u01b0\u1edbc cho c\u00e2y \u0111\u1ea7u d\u00f2ng hi\u1ec7u qu\u1ea3 nh\u1ea5t.
\n(3) C\u00e1c d\u00f2ng thu\u1ed9c t\u1ed5 h\u1ee3p lai UC v\u00e0 UG nh\u00e2n gi\u1ed1ng b\u1eb1ng hom d\u1ec5 h\u01a1n c\u00e1c d\u00f2ng thu\u1ed9c t\u1ed5 h\u1ee3p lai UE, c\u00e1c d\u00f2ng trong c\u00f9ng m\u1ed9t t\u1ed5 h\u1ee3p lai c\u0169ng c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 kh\u00e1c nhau, d\u00f2ng lai ra r\u1ec5 th\u1ea5p th\u00ec c\u00f3 s\u1ed1 l\u01b0\u1ee3ng r\u1ec5 v\u00e0 chi\u1ec1u d\u00e0i r\u1ec5 c\u0169ng k\u00e9m h\u01a1n so v\u1edbi c\u00e1c d\u00f2ng c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 cao.T\u1eeb kh\u00f3a:<\/i> Gi\u00e2m hom, nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh, b\u1ea1ch \u0111\u00e0n lai<\/p>\n

Research on cutting propagation of new eucalyptus hybrid<\/b><\/p>\n

Research on methods to create shoots, cutting and watering control for plus trees of hybrid combinations between E. urophylla<\/i> and E. exserta <\/i>(called UE), E. urophylla <\/i>and E. grandis<\/i> (UG), E. urophylla<\/i> and E. camaldulensis<\/i> (UC) indicated that: (1) All three methods to create shoots (re – barking around the bole, tree cutting and direct cutting of 6 month old trees) have their own advantages and disadvantages, so that base on real situation, one could apply one of the three said methods for experiment; (2) The method to plant selected clones on land with roofing when raining and limitted watering from the time when shoot lengths are from 2 – 3cm to the cutting time was the most effective method; (3) Cutting propagation of UC and UG were easier than that of UE. In addition, clones within a hybrid combination have different rooting rate and a hybrid, which has low rooting rate, also has low quantity of roots and the length of roots is short, too.<\/p>\n

Keywords:<\/i> Cutting, vegetative propagation, eucalyptus hybrid<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

NGHI\u00caN C\u1ee8U \u1ea2NH H\u01af\u1edeNG C\u1ee6A NHI\u1ec6T \u0110\u1ed8 N\u01af\u1edaC X\u1eec L\u00dd H\u1ea0T \u0110\u1ebeN T\u1ef6 L\u1ec6 N\u1ea2Y M\u1ea6M V\u00c0 CHE S\u00c1NG \u0110\u1ebeN SINH TR\u01af\u1edeNG C\u1ee6A C\u00c2Y M\u1ea0Y CH\u00c2U TRONG GIAI \u0110O\u1ea0N V\u01af\u1edcN \u01af\u01a0M<\/b><\/p>\n

V\u0169 V\u0103n Thu\u1eadn1<\/sup>, L\u00f2 Th\u1ecb H\u1ed3ng Xoan2
\n1 <\/i><\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc T\u00e2y B\u1eafc
\n2<\/sup> H\u1ea1t Ki\u1ec3m l\u00e2m huy\u1ec7n Thu\u1eadn Ch\u00e2u, t\u1ec9nh S\u01a1n La<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ea1y ch\u00e2u (Carya tonkinensis<\/i>\u00a0Lecomte, 1921) l\u00e0 c\u00e2y b\u1ea3n \u0111\u1ecba v\u00e0 \u0111\u1eb7c h\u1eefu, c\u00e2y g\u1ed7 trung b\u00ecnh, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf v\u00e0 b\u1ea3o t\u1ed3n, ph\u00e2n b\u1ed1 h\u1eb9p, \u1edf Vi\u1ec7t Nam ch\u1ec9 ph\u00e2n b\u1ed1 t\u1ea1i m\u1ed9t s\u1ed1 huy\u1ec7n v\u00e0 th\u00e0nh ph\u1ed1 c\u1ee7a t\u1ec9nh S\u01a1n La. \u0110\u00e2y l\u00e0 lo\u00e0i ghi trong S\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam v\u1edbi c\u1ea5p \u0111\u00e1nh gi\u00e1 \u201cs\u1ebd nguy c\u1ea5p, b\u1eadc V\u201d. Tuy nhi\u00ean, nh\u1eefng th\u00f4ng tin v\u1ec1 lo\u00e0i c\u00e2y n\u00e0y r\u1ea5t h\u1ea1n ch\u1ebf v\u00e0 ch\u01b0a c\u00f3 nh\u1eefng nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc v\u00e0 nh\u00e2n gi\u1ed1ng g\u00e2y tr\u1ed3ng lo\u00e0i c\u00e2y n\u00e0y. V\u00ec v\u1eady, nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc x\u1eed l\u00fd h\u1ea1t \u0111\u1ebfn t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m v\u00e0 che s\u00e1ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y M\u1ea1y ch\u00e2u trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m l\u00e0 c\u1ea7n thi\u1ebft. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc x\u1eed l\u00fd h\u1ea1t c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t M\u1ea1y ch\u00e2u r\u00f5 r\u1ec7t. Ng\u00e2m h\u1ea1t \u1edf nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc 60o<\/sup>C c\u00f3 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t 82,79% v\u00e0 th\u1ea5p nh\u1ea5t c\u00f4ng th\u1ee9c ng\u00e2m h\u1ea1t \u1edf nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc 100o<\/sup>C c\u00f3 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 21,11%; trong giai \u0111o\u1ea1n 4 th\u00e1ng \u0111\u1ea7u k\u1ec3 t\u1eeb khi gieo \u01b0\u01a1m, che s\u00e1ng 75% l\u00e0 ph\u00f9 h\u1ee3p, c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng chi\u1ec1u cao \u1edf m\u1ee9c cao v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng l\u00e0 92,67% v\u00e0 23,03cm. Nh\u01b0ng t\u1eeb sau th\u00e1ng th\u1ee9 4 \u0111\u1ebfn th\u00e1ng th\u1ee9 8 che s\u00e1ng 50% l\u00e0 ph\u00f9 h\u1ee3p, c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng chi\u1ec1u cao \u0111\u1ea1t cao nh\u1ea5t v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng l\u00e0 92,66% v\u00e0 52,74cm. C\u00e2y con 7 – 8 th\u00e1ng tu\u1ed5i \u0111\u1ee7 ti\u00eau chu\u1ea9n \u0111em tr\u1ed3ng r\u1eebng.T\u1eeb kh\u00f3a:<\/i> X\u1eed l\u00fd h\u1ea1t, che s\u00e1ng, t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m, sinh tr\u01b0\u1edfng, M\u1ea1y ch\u00e2u<\/p>\n

Research on influence of treated water temperature to germination and shading to growth of <\/b>Carya tonkinensis<\/i><\/b> Lecomte, 1921 in nursery<\/b><\/p>\n

Carya tonkinensis\u00a0<\/i>Lecomte, 1921 is a native and end endemic tree species, everage tree with high economic and conservation values, stenotopic, in Vietnam is only distributed in some districts and cities of Son La provinces. This is a species listed in the Red Book of Vietnam with an assessment \u201cwill endangered, level V\u201d. However, the information on this species is very limited and there are no studies on silvicultural characteristics, propagation and planting. Therefore, it is essential to research on influence of water temperature processing to germination and shading to growth of Crarya tonkinensis<\/i> Lecomte in nursery.<\/p>\n

Research results showed that water temperature processing affect germination rate significantly, formula soaking seeds in water temperature 60o<\/sup>C have the highest germination rate 82.79% and the lowest formula soaking seeds in water temperature 100o<\/sup>C with 21.11% germination rate. About shading in the first 4 months after sowing, shading 75% is appropriate, survival and ability to grow in height at high shading reached similar values application is 92.67% and 23.03cm. However, from after the 4th<\/sup> month to 8th<\/sup> month, shading 50% is appropriate, with survival rates as well as the growth reached the highest heights with the corresponding value was 92.66% and 52.74cm, seedling 7 – 8 months old qualified planted forest planting.<\/p>\n

Keywords:<\/i> Seed processing, shading, germination, growth, Carya onkinensis<\/i>\u00a0Lecomte, <\/i>1921<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

SINH TR\u01af\u1edeNG C\u1ee6A KEO LAI TR\u00caN C\u00c1C D\u1ea0NG B\u00c3I TH\u1ea2I
\nSAU KHAI TH\u00c1C BAUXITE T\u1ea0I M\u1ece BAUXITE L\u1ed8C PH\u00c1T, B\u1ea2O L\u1ed8C V\u00c0 T\u00c2N RAI, B\u1ea2O L\u00c2M, T\u1ec8NH L\u00c2M \u0110\u1ed2NG<\/b><\/p>\n

Ph\u1ea1m Tr\u1ecdng Nh\u00e2n, Nguy\u1ec5n Th\u00e0nh M\u1ebfn, L\u01b0u Th\u1ebf Trung
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i m\u1ecf bauxite L\u1ed9c Ph\u00e1t, B\u1ea3o L\u1ed9c v\u00e0 T\u00e2n Rai, B\u1ea3o L\u00e2m. C\u00f3 3 d\u1ea1ng b\u00e3i th\u1ea3i sau khai th\u00e1c bauxite l\u00e0 ho\u00e0n th\u1ed5 b\u1eb1ng l\u1edbp \u0111\u1ea5t m\u1eb7t, ho\u00e0n th\u1ed5 b\u1eb1ng b\u00f9n th\u1ea3i v\u00e0 ho\u00e0n th\u1ed5 k\u1ebft h\u1ee3p b\u00f9n th\u1ea3i v\u00e0 l\u1edbp \u0111\u1ea5t m\u1eb7t. C\u00e1c b\u00e3i th\u1ea3i c\u00f3 th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi t\u1eeb trung b\u00ecnh \u0111\u1ebfn nh\u1eb9, v\u1edbi \u0111\u1ed9 pH dao \u0111\u1ed9ng t\u1eeb 4,8 – 6,5. H\u00e0m l\u01b0\u1ee3ng c\u00e1c ch\u1ea5t h\u1eefu c\u01a1, \u0111\u1ea1m, l\u00e2n, kali t\u1ed5ng s\u1ed1 tr\u00ean b\u00e3i th\u1ea3i c\u00f3 y\u1ebfu t\u1ed1 b\u00f9n th\u1ea3i r\u1ea5t ngh\u00e8o so v\u1edbi ho\u00e0n th\u1ed5 b\u1eb1ng l\u1edbp \u0111\u1ea5t m\u1eb7t.K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng c\u00e2y keo lai c\u00f3 th\u1ec3 s\u1ed1ng tr\u00ean c\u00e1c d\u1ea1ng b\u00e3i th\u1ea3i, v\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng dao \u0111\u1ed9ng t\u1eeb 60 – 90% sau 4 n\u0103m tr\u1ed3ng. \u0110\u1ed1i v\u1edbi c\u00e1c m\u00f4 h\u00ecnh ho\u00e0n th\u1ed5, keo lai c\u00f3 sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao t\u1ed1t h\u01a1n so v\u1edbi c\u00e1c m\u00f4 h\u00ecnh nguy\u00ean tr\u1ea1ng hay ch\u01b0a ho\u00e0n th\u1ed5. C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn v\u1ec1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y keo lai trong c\u00e1c m\u00f4 h\u00ecnh ho\u00e0n th\u1ed5, theo \u0111\u00f3 l\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c \u1edf m\u00f4 h\u00ecnh ho\u00e0n th\u1ed5 \u0111\u1ea5t m\u1eb7t \u0111\u1ea1t 3,35 cm\/n\u0103m l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi 1,7 cm\/n\u0103m c\u1ee7a m\u00f4 h\u00ecnh ho\u00e0n th\u1ed5 b\u1eb1ng b\u00f9n th\u1ea3i, t\u01b0\u01a1ng \u1ee9ng v\u1edbi chi\u1ec1u cao v\u00fat ng\u1ecdn l\u00e0 1,6 m\/n\u0103m so v\u1edbi 1,2 m\/n\u0103m.T\u1eeb kh\u00f3a:<\/i> B\u00e3i th\u1ea3i, ho\u00e0n th\u1ed5, keo lai, m\u1ecf bauxite, sinh tr\u01b0\u1edfng.<\/p>\n

Growth of A. mangium<\/i> <\/b>\u00b4 A. auriculiformis<\/i> in mine wasteland at Loc <\/b>Phat, Bao Loc and Tan Rai, Bao Lam bauxite mine, Lam Dong province<\/b><\/p>\n

The research was carried out at the bauxite – mined site of Loc Phat, Bao Loc and Tan Rai, Bao Lam. The end result for mining activities on the surface is mining waste and alteration of land forms. There are 3 types of mine wasteland, given that (i) \u201cdirectly return\u201d topsoil; (ii) \u201cdirectly return\u201d sludge and (iii) combined topsoil and sludge. The soil texture of mine wasteland was found to be from moderate to slight, with the soil pH to range of 4.8 – 6.5. The content of macronutrient such as nitrogen, phosphorus, potassium on the landfill of waste sludge factor is very poor compared to the one with topsoil.<\/p>\n

Results show that A. mangium<\/i> \u00b4 A. auriculiformis<\/i> could tolerate on the mining waste, with survival rates ranging from 60 – 90% after 4 years of planting. For the restoration models, A. mangium<\/i> \u00b4 A. auriculiformis<\/i> had growth of diameter and height better than undisturbed or unrestored soil. There are major differences in growth of A. mangium<\/i> \u00b4 A. auriculiformis<\/i> in restoration land, in which MAI of collar diameter growth in restoration of topsoil reaches at 3.35cm per year much greater than 1.7cm per year in restoration of using sludge, respectively MAI of height is 1.6m per year compared to 1.2m per year.<\/p>\n

Keywords:<\/i> Bauxite, restoration, mining wasteland, growth, A. mangium<\/i> \u00b4 A. auriculiformis<\/i>.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

X\u00c1C \u0110\u1ecaNH T\u00caN KHOA H\u1eccC CHO C\u00c2Y NAO
\nHAY CHUA KH\u00c9T \u1ede QU\u1ea2NG B\u00ccNH<\/b><\/p>\n

Ph\u1ea1m H\u1ed3ng Th\u00e1i1*<\/sup>, Nguy\u1ec5n V\u0103n Huy2<\/sup>, Nguy\u1ec5n Tu\u1ea5n Anh1<\/sup>,
\nNguy\u1ec5n Th\u00e0nh T\u00e2y1<\/sup>, Ho\u00e0ng Ch\u00ed Thanh1
\n1 <\/i><\/sup>Chi c\u1ee5c Ki\u1ec3m l\u00e2m Qu\u1ea3ng B\u00ecnh,
\n2 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Chua kh\u00e9t, c\u00f2n g\u1ecdi v\u1edbi t\u00ean kh\u00e1c l\u00e0 Nao, ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean \u1edf Qu\u1ea3ng B\u00ecnh, l\u00e0 lo\u00e0i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb th\u01b0\u01a1ng ph\u1ea9m cao. G\u1ed7 c\u00f3 h\u1ed3ng s\u1eafc r\u1ea5t \u0111\u1eb9p, \u0111\u01b0\u1ee3c nh\u00e2n d\u00e2n s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m nh\u00e0 \u1edf v\u00e0 c\u00e1c v\u1eadt d\u1ee5ng trong gia \u0111\u00ecnh. T\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay, c\u00e1c c\u01a1 quan ch\u1ee9c n\u0103ng, \u0111\u01a1n v\u1ecb t\u01b0 v\u1ea5n v\u1ec1 l\u00e2m nghi\u1ec7p, c\u00e1c l\u00e2m tr\u01b0\u1eddng tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh Qu\u1ea3ng B\u00ecnh v\u00e0 trong danh l\u1ee5c th\u1ef1c v\u1eadt c\u1ee7a V\u01b0\u1eddn Qu\u1ed1c gia Phong Nha – K\u1ebb B\u00e0ng v\u1eabn s\u1eed d\u1ee5ng t\u00ean khoa h\u1ecdc c\u1ee7a c\u00e2y Chua kh\u00e9t (Nao) l\u00e0 Chukrasia <\/i>sp. v\u00e0 x\u1ebfp v\u00e0o g\u1ed7 nh\u00f3m III theo b\u1ea3ng ph\u00e2n nh\u00f3m t\u1ea1m th\u1eddi c\u00e1c lo\u00e0i g\u1ed7 s\u1eed d\u1ee5ng th\u1ed1ng nh\u1ea5t trong c\u1ea3 n\u01b0\u1edbc theo Quy\u1ebft \u0111\u1ecbnh s\u1ed1 2198\/CNR c\u1ee7a B\u1ed9 L\u00e2m nghi\u1ec7p ban h\u00e0nh ng\u00e0y 26\/11\/1977. Tuy nhi\u00ean, khi nghi\u00ean c\u1ee9u ph\u00e2n t\u00edch chi ti\u1ebft \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, ph\u00e2n lo\u1ea1i, c\u1ea5u t\u1ea1o c\u1ee7a c\u00e2y Chua kh\u00e9t (Nao) \u1edf Qu\u1ea3ng B\u00ecnh, ch\u00fang t\u00f4i x\u00e1c \u0111\u1ecbnh lo\u00e0i c\u00e2y n\u00e0y thu\u1ed9c chi Dysoxylum<\/i>, c\u00f3 nhi\u1ec1u \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c so v\u1edbi lo\u00e0i Chua kh\u00e9t (Chukrasia<\/i> sp.), thu\u1ed9c chi Chukrasia<\/i> trong b\u1ea3ng ph\u00e2n lo\u1ea1i t\u1ea1m th\u1eddi c\u00e1c lo\u1ea1i g\u1ed7 th\u1ed1ng nh\u1ea5t trong c\u1ea3 n\u01b0\u1edbc \u1edf tr\u00ean. Do \u0111\u00f3, trong nghi\u00ean c\u1ee9u n\u00e0y, ch\u00fang t\u00f4i \u0111\u00e3 ph\u00e2n t\u00edch m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a lo\u00e0i c\u00e2y n\u00e0y \u1edf Qu\u1ea3ng B\u00ecnh, so s\u00e1nh v\u1edbi lo\u00e0i Chua kh\u00e9t (Chukrasia <\/i>sp.), <\/i>thu\u1ed9c chi Chukrasia <\/i>trong b\u1ea3ng ph\u00e2n nh\u00f3m \u1edf tr\u00ean v\u00e0 t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh t\u00ean khoa h\u1ecdc c\u1ee7a c\u00e2y Chua kh\u00e9t (Nao) \u1edf Qu\u1ea3ng B\u00ecnh l\u00e0 Dysoxylum cyrtobotryum<\/i> Miq., Fl. Ind. Bat. Suppl. 1 (1861).T\u1eeb kh\u00f3a:<\/i> C\u00e2y Chua kh\u00e9t, Nao, Qu\u1ea3ng B\u00ecnh, t\u00ean khoa h\u1ecdc<\/i><\/p>\n

Re – <\/b>Identification of scientific name for the tree species \u201c<\/b>Chua khet\u201d or \u201c<\/b>Nao\u201d in Quang Binh province<\/b><\/p>\n

The \u201cChua Khet<\/i>\u201d tree species, also locally called \u201cNao<\/i>\u201d in Vietnamese, naturally distributes in Quang Binh province. This indigenous species is a timber of high commercial value, used for housing construction and fine indoor furniture – its wood has a beautiful light red color. In Decision 2198\/CNR of the Ministry of Forestry, dated 26 November 1977, on temporary classification of timber species being used in Vietnam, this indigenous species (\u201cChua Khet<\/i>\u201d or \u201cNao<\/i>\u201d) is classified as Chukrasia <\/i>sp., belonging to Group III. Hence, the name Chukrasia <\/i>sp. <\/i>have been used for this tree species <\/i>by forestry technical agencies, forestry consulting companies and state – owned forest enterprises in Quang Binh province as well as in the list of flora in Phong Nha – Ke Bang National Park. However, detailed study of the morphological characteristics, classification and structure of the \u201cChua khet<\/i>\u201d (or \u201cNao<\/i>\u201d) in Quang Binh province suggests that it has many different characteristics as compared to those of the species classified as Chukrasia <\/i>sp. <\/i>in the above – mentioned Decision 2198\/CNR, and actually belongs to the Dysoxylum<\/i> genus. Therefore, in this study, we analyzed some characteristics of this plant in Quang Binh, compared with the \u201cChua khet\u201d<\/i> (Chukrasia <\/i>sp.) <\/i>of the Chukrasia<\/i> genus and then determined the scientific name of the Chua Khet<\/i> (Nao<\/i>) species found in Quang Binh to be Dysoxylum cyrtobotryum<\/i> Miq., Fl. Ind. Bat. Suppl. 1 (1861).<\/p>\n

Keywords:<\/i> Chua khet, Nao species, Quang Binh, scientific name<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Impatiens parvisepala <\/i>(Balsaminaceae): <\/b>A NEWLY RECORDED FROM VIETNAM<\/b><\/p>\n\n\n\n
\n

Hoang Thanh Son, Trinh Ngoc Bon, Nguyen Quang Hung,
\nPham Van Vinh and Nguyen Thi Van Anh
\nSilviculture Research Institute, Vietnamese Academy of Forest Sciences, Vietnam<\/i><\/p>\n

SUMMARY<\/p>\n

Impatiens parvisepala <\/i>S. X. Yu & Y. T. Hou, a previously known species only in China, is newly recorded from Vietnam. It is found in primary limestone forest in Na Hang Nature Reserve, Tuyen Quang Province, Vietnam.<\/p>\n

Keywords:<\/i> Balsaminaceae, Impatiens<\/i>, Na Hang, Nature Reserve, Tuyen Quang<\/p>\n

Impatiens parvisepala <\/i>(Balsaminaceae): M\u1ed9t lo\u00e0i b\u00f3ng n\u01b0\u1edbc m\u1edbi cho khu h\u1ec7 th\u1ef1c v\u1eadt Vi\u1ec7t Nam<\/b><\/p>\n

Impatiens parvisepala <\/i>S. X. Yu & Y. T. Hou, lo\u00e0i B\u00f3ng n\u01b0\u1edbc \u0111\u00e0i hoa nh\u1ecf tr\u01b0\u1edbc \u0111\u00e2y ch\u1ec9 \u0111\u01b0\u1ee3c bi\u1ebft ph\u00e2n b\u1ed1 \u1edf Trung Qu\u1ed1c, nay l\u00e0 m\u1ed9t lo\u00e0i m\u1edbi cho khu h\u1ec7 th\u1ef1c v\u1eadt Vi\u1ec7t Nam. N\u00f3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong c\u00e1c khu r\u1eebng nguy\u00ean sinh n\u00fai \u0111\u00e1 \u1edf Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean Na Hang, t\u1ec9nh Tuy\u00ean Quang.<\/p>\n

T\u1eeb kh\u00f3a:<\/i> H\u1ecd B\u00f3ng n\u01b0\u1edbc, chi B\u00f3ng n\u01b0\u1edbc, huy\u1ec7n Na Hang, khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean, t\u1ec9nh Tuy\u00ean Quang<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110A D\u1ea0NG CHI RI\u1ec0NG (Allpinia<\/i>) V\u00c0 SA NH\u00c2N (Amomum<\/i>)
\nTHU\u1ed8C H\u1ecc G\u1eeaNG (Zingiberaceae) \u1ede B\u1eaeC TRUNG B\u1ed8<\/b><\/p>\n

L\u00ea Th\u1ecb H\u01b0\u01a1ng1*<\/sup>, Tr\u1ea7n Th\u1ebf B\u00e1ch2
\n1<\/sup>Khoa Sinh h\u1ecdc, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Vinh
\n2<\/i><\/sup>Vi\u1ec7n Sinh th\u00e1i v\u00e0 T\u00e0i nguy\u00ean Sinh v\u1eadt, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Tr\u00ean th\u1ebf gi\u1edbi, chi Alpinia<\/i> c\u00f3 kho\u1ea3ng 230 lo\u00e0i v\u00e0 Amomum<\/i> c\u00f3 kho\u1ea3ng 150 lo\u00e0i. Ch\u00fang ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu \u1edf v\u00f9ng nhi\u1ec7t \u0111\u1edbi v\u00e0 c\u1eadn nhi\u1ec7t \u0111\u1edbi. \u1ede Vi\u1ec7t Nam chi Alpinia<\/i> c\u00f3 31 lo\u00e0i v\u00e0 chi Amomum<\/i> c\u00f3 21 lo\u00e0i. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 40 lo\u00e0i c\u1ee7a 2 chi n\u00e0y ph\u00e2n b\u1ed1 \u1edf B\u1eafc Trung B\u1ed9, trong \u0111\u00f3 c\u00f3 6 lo\u00e0i b\u1ed5 sung cho khu v\u1ef1c B\u1eafc Trung B\u1ed9 v\u00e0 2 lo\u00e0i b\u1ed5 sung cho h\u1ec7 th\u1ef1c v\u1eadt Vi\u1ec7t Nam. M\u00f4i tr\u01b0\u1eddng s\u1ed1ng c\u1ee7a c\u00e1c lo\u00e0i trong 2 chi n\u00e0y ch\u1ee7 y\u1ebfu \u1edf d\u01b0\u1edbi t\u00e1n r\u1eebng v\u1edbi 33 lo\u00e0i, ti\u1ebfp \u0111\u1ebfn l\u00e0 r\u1eebng th\u1ee9 sinh v\u1edbi 27 lo\u00e0i, ven su\u1ed1i v\u00e0 tr\u1ea3ng c\u00e2y b\u1ee5i c\u00f9ng v\u1edbi 17 lo\u00e0i v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 r\u1eebng nguy\u00ean sinh v\u1edbi 5 lo\u00e0i. C\u00e1c lo\u00e0i c\u00e2y thu\u1ed9c chi Alpinia<\/i> v\u00e0 Amomum <\/i>\u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u c\u00f3 c\u00e1c gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng kh\u00e1c nhau nh\u01b0 cho tinh d\u1ea7u v\u1edbi 36 lo\u00e0i, l\u00e0m thu\u1ed1c v\u1edbi 30 lo\u00e0i, l\u00e0m gia v\u1ecb v\u1edbi 10 lo\u00e0i v\u00e0 \u0103n \u0111\u01b0\u1ee3c v\u1edbi 6 lo\u00e0i. Y\u1ebfu t\u1ed1 \u0111\u1ecba l\u00fd c\u1ee7a 2 chi \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u c\u00f3 3 y\u1ebfu t\u1ed1 \u0111\u1ecba l\u00fd ch\u00ednh, y\u1ebfu t\u1ed1 nhi\u1ec7t \u0111\u1edbi ch\u00e2u \u00c1 chi\u1ebfm 45,0%; y\u1ebfu t\u1ed1 \u00f4n \u0111\u1edbi chi\u1ebfm 7,5%, y\u1ebfu t\u1ed1 \u0111\u1eb7c h\u1eefu v\u00e0 c\u1eadn \u0111\u1eb7c h\u1eefu chi\u1ebfm 45,0% <\/i>T\u1eeb kh\u00f3a:<\/i> Chi Ri\u1ec1ng, Sa nh\u00e2n, \u0111a d\u1ea1ng, h\u1ecd G\u1eebng, B\u1eafc Trung B\u1ed9<\/p>\n

Diversity of the genera Alpinia<\/i> and Amomum<\/i> (Zingiberaceae<\/i>) in North Center Vietnam<\/b><\/p>\n

The genus Alpinia<\/i> about 230 species and Amomum<\/i> about 150 species. They are distributed in the tropics and subtropics. In Vietnam genus Alpinia<\/i> about 31 species and genus Amomum<\/i> about 21 species. Study result of diversity of genera Alpinia<\/i> and Amomum<\/i> (Zingiberaceae) in North Centre of Viet Nam reported, 40 species among more than 51 reported species. There are 6 species new record for list of North center Vietnam (2011) and 2 species new record for flora of Vietnam. These plants are used to treat different diseases that we grouped into: 30 species for medicinal plants, 6 species edible, 36 species for essential oils plants, 10 species for spice. There are 5 major habitats: forest, light forest, subforest, along streams. The distribution of Alpinia<\/i> and Amomum<\/i> species in North Centre of Viet Nam are mainly comprised of the tropical Asia element (45.0%), temperate element (7.5%) and endemic element (45.0%).<\/p>\n

Keywords:<\/i> Alpinia, Amomum<\/i>, diversity, Zingiberaceae, North Center Vietnam<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NGHI\u00caN C\u1ee8U TH\u00c0NH PH\u1ea6N C\u00c1C LO\u00c0I S\u00c2U, B\u1ec6NH H\u1ea0I
\nTR\u00caN C\u00c2Y XOAN NH\u1eea Choerospondias axillaris<\/i> (Roxb.) Burtt & Hill<\/b><\/p>\n

L\u1ea1i Thanh H\u1ea3i1<\/sup>, L\u00ea V\u0103n B\u00ecnh2
\n1<\/i><\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh
\n2<\/sup> Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Xoan nh\u1eeb (Choerospondias axillaris<\/i>) l\u00e0 c\u00e2y b\u1ea3n \u0111\u1ecba g\u1ed7 l\u1edbn m\u1ecdc nhanh \u0111a t\u00e1c d\u1ee5ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi nhi\u1ec1u m\u1ee5c \u0111\u00edch kh\u00e1c nhau nh\u01b0 g\u1ed7 s\u1eed d\u1ee5ng trong n\u1ed9i th\u1ea5t, x\u00e2y d\u1ef1ng v\u00e0 v\u1ecf c\u00e2y, qu\u1ea3 v\u00e0 l\u00e1 s\u1eed d\u1ee5ng trong y h\u1ecdc. Tuy nhi\u00ean vi\u1ec7c tr\u1ed3ng v\u00e0 ph\u00e1t tri\u1ec3n lo\u00e0i c\u00e2y n\u00e0y g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n b\u1edfi c\u00e1c lo\u00e0i s\u00e2u, b\u1ec7nh h\u1ea1i l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra th\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u, b\u1ec7nh h\u1ea1i Xoan nh\u1eeb bao g\u1ed3m: 5 lo\u00e0i s\u00e2u h\u1ea1i v\u00e0 3 lo\u1ea1i b\u1ec7nh h\u1ea1i, trong \u0111\u00f3 x\u00e1c \u0111\u1ecbnh 4 lo\u00e0i g\u00e2y h\u1ea1i cho Xoan nh\u1eeb l\u00e0 S\u00e2u \u0111o (Hyposidra talaca<\/i> Trusted), X\u00e9n t\u00f3c \u0111\u1ee5c th\u00e2n c\u00e0nh (Aeolesthes<\/i> sp.), b\u1ec7nh th\u00e1n th\u01b0 (Colletotrichum gloeosporioides<\/i> Penz.) v\u00e0 b\u1ec7nh th\u1ed1i c\u1ed5 r\u1ec5 (Fusarium oxysporum <\/i>Schlecht. emend. Snyder & Hansen). M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i c\u1ee7a s\u00e2u b\u1ec7nh \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3.T\u1eeb kh\u00f3a:<\/i> B\u1ec7nh th\u00e1n th\u01b0, b\u1ec7nh th\u1ed1i c\u1ed5 r\u1ec5, s\u00e2u \u0111o, x\u00e9n t\u00f3c \u0111\u1ee5c th\u00e2n c\u00e0nh v\u00e0 xoan nh\u1eeb<\/p>\n

Insect pests and diseaes of Choerospondias axillaris<\/i><\/b><\/p>\n

Choerospondias axillaris<\/i>is is a large fast growing tree that has many different uses as for wood in furniture, construction and bark, fruit and leaves used in medicine. But the cultivation and development of this species is difficult because of insect pests and diseases affecting its growth and development. The main insect and diseases of C. axillaris<\/i> include 5 species pests of insect and 3 kinds of disease, in which, four major causative agents for C. axillaris<\/i> are looper (Hyposidra talaca)<\/i>, longhorn beetle (Aeolesthes <\/i>sp.) and anthracnose disease (Colletotrichum gloeosporioides<\/i>) and damping off disease (Fusarium oxysporum<\/i>). Some main morphological characteristics of the insect pests and diseases are described.<\/p>\n

Keywords:<\/i> Aeolesthes<\/i> sp., Anthracnose, Choerospondias axillaris<\/i>, damping off, Hyposidra talaca<\/i><\/p>\n

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

M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M H\u00ccNH TH\u00c1I, SINH H\u1eccC<\/b>
\n<\/b>C\u1ee6A S\u00c2U TRE<\/b> <\/b>(Omphisa fuscidentalis<\/i>\u00a0Hampson)<\/b><\/p>\n

Ho\u00e0ng Th\u1ecb H\u1ed3ng Nghi\u1ec7p1<\/sup>, Nguy\u1ec5n Th\u1ebf Nh\u00e32<\/sup>
\n<\/i>1<\/i> <\/i>Tr\u01b0\u1eddng Cao \u0111\u1eb3ng S\u01a1n La<\/i>
\n<\/sup><\/i>2<\/sup><\/i> <\/i>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

S\u00e2u tre (Omphisa fuscidentalis<\/i> Hampson) thu\u1ed9c b\u1ed9 C\u00e1nh v\u1ea9y (Lepidoptera), h\u1ecd B\u01b0\u1edbm C\u1ecf (Crambidae). S\u00e2u tre l\u00e0 th\u1ef1c ph\u1ea9m \u01b0a th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u00e2n mi\u1ec1n n\u00fai. S\u00e2u non S\u00e2u tre c\u00f3 13 \u0111\u1ed1t th\u00e2n, 3 \u0111\u00f4i ch\u00e2n ng\u1ef1c, 5 \u0111\u00f4i ch\u00e2n b\u1ee5ng, mi\u1ec7ng nhai, kh\u00f4ng c\u00f3 m\u1eaft k\u00e9p, c\u00f3 5 m\u1eaft \u0111\u01a1n \u1edf g\u1ea7n g\u1ed1c r\u1ea7u \u0111\u1ea7u. R\u00e2u \u0111\u1ea7u r\u1ea5t ng\u1eafn v\u1edbi 2 \u0111\u1ed1t; lo\u1ea1i nh\u1ed9ng m\u00e0ng; tr\u00ad\u01b0\u1edfng th\u00e0nh d\u1ea1ng ng\u00e0i, c\u00f3 ki\u1ec3u mi\u1ec7ng v\u00f2i h\u00fat. S\u00e2u tre thu\u1ed9c nh\u00f3m c\u00f4n tr\u00f9ng bi\u1ebfn th\u00e1i ho\u00e0n to\u00e0n. V\u00f2ng \u0111\u1eddi k\u00e9o d\u00e0i 12 th\u00e1ng. Pha s\u00e2u non g\u1ed3m 5 tu\u1ed5i v\u00e0 k\u00e9o d\u00e0i kho\u1ea3ng 9 th\u00e1ng. S\u00e2u non tu\u1ed5i 1 x\u00e2m nh\u1eadp v\u00e0o c\u00e2y tre b\u1eb1ng c\u00e1ch \u0111\u1ee5c m\u1ed9t l\u1ed7 tr\u00ean l\u00f3ng m\u0103ng. Th\u1eddi gian ph\u00e1t tri\u1ec3n c\u1ee7a pha nh\u1ed9ng trong v\u00f2ng 40 – 60 ng\u00e0y. Ki\u1ec3u nh\u1ed9ng treo ng\u01b0\u1ee3c \u0111\u1ea7u. M\u00e0u s\u1eafc c\u1ee7a nh\u1ed9ng thay \u0111\u1ed5i theo th\u1eddi gian ph\u00e1t tri\u1ec3n. Sau khi v\u0169 h\u00f3a \u0111\u01b0\u1ee3c m\u1ed9t v\u00e0i gi\u1edd, tr\u01b0\u1edfng th\u00e0nh t\u00ecm c\u1eb7p \u0111\u1ec3 giao ph\u1ed1i. Qu\u00e1 tr\u00ecnh giao ph\u1ed1i di\u1ec5n ra v\u00e0o ban \u0111\u00eam. Tr\u1ee9ng \u0111\u01b0\u1ee3c \u0111\u1ebb th\u00e0nh c\u1ee5m, kho\u1ea3ng 80 – 130 tr\u1ee9ng l\u00ean b\u1eb9 c\u1ee7a m\u0103ng m\u1edbi m\u1ecdc. Th\u1eddi gian ph\u00e1t tri\u1ec3n \u1edf giai \u0111o\u1ea1n tr\u1ee9ng kho\u1ea3ng 12 ng\u00e0y v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a tr\u01b0\u1edfng th\u00e0nh kho\u1ea3ng 8 ng\u00e0y. S\u00e2u tre c\u00f3 m\u1ed9t l\u1ee9a trong m\u1ed9t n\u0103m. Tr\u01b0\u1edfng th\u00e0nh th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n v\u00e0o th\u00e1ng 7. Tr\u1ee9ng \u0111\u01b0\u1ee3c \u0111\u1ebb t\u1eeb \u0111\u1ea7u th\u00e1ng 8 \u0111\u1ebfn gi\u1eefa th\u00e1ng 8. Giai \u0111o\u1ea1n s\u00e2u non k\u00e9o d\u00e0i t\u1eeb cu\u1ed1i th\u00e1ng 8 n\u0103m tr\u01b0\u1edbc \u0111\u1ebfn \u0111\u1ea7u th\u00e1ng 5 c\u1ee7a n\u0103m sau. T\u1eeb gi\u1eefa th\u00e1ng 5 \u0111\u1ebfn cu\u1ed1i th\u00e1ng 6 s\u00e2u non h\u00f3a nh\u1ed9ng. S\u00e2u non S\u00e2u tre c\u00f3 m\u1ed9t th\u1eddi gian d\u00e0i r\u01a1i v\u00e0o tr\u1ea1ng th\u00e1i t\u1ea1m ng\u1eebng ph\u00e1t d\u1ee5c (diapause), k\u00e9o d\u00e0i t\u1eeb cu\u1ed1i th\u00e1ng 10 n\u0103m tr\u01b0\u1edbc \u0111\u1ebfn \u0111\u1ea7u th\u00e1ng 5 c\u1ee7a n\u0103m sau. S\u00e2u tre c\u00f3 nhi\u1ec1u k\u1ebb th\u00f9 t\u1ef1 nhi\u00ean nh\u01b0 chim g\u00f5 ki\u1ebfn, th\u1ea1ch th\u00f9ng v\u00e0 m\u1ed9t s\u1ed1 lo\u00e0i ki\u1ebfn \u0103n s\u00e2u.T\u1eeb kh\u00f3a:<\/i>: <\/i>H\u00ecnh th\u00e1i, S\u00e2u tre, <\/i>Omphisa fuscidentalis<\/i><\/p>\n

Some morphological, biological characteristics of bamboo caterpillar (Omphisa fuscidentalis<\/i><\/b>\u00a0<\/b>Hampson)<\/b><\/p>\n

Bamboo caterpillar (Omphisia fuscidentalis<\/i> Hampson) is in Lepidoptera order, Crambidae family. Bamboo caterpillar is a favourite food of mountain people. Bamboo caterpillar is a pantamorphia insect. The larvae of Bamboo caterpillar has 13 segments, 3 pairs of thorax legs, 5 pairs of abdominal legs, a mandibulatory mouth part, non – complex eyes, 5 occelli near by antenna. The antenna is very short with 2 segments. The pupa is not contained in a cuccoon, and the adult moth has a sucking mouth part. Bamboo caterpillar life cycle lasts around 12 months. The larva phase has five instars and lasts from 9 to 10 months. The larvae bore a hole in the bamboo shoot, destroying the inner pulp, and then bore through the internodes moving upwards through the stem. The active larval phase lasts between 40 to 60 days. Then the larvae hang upside down inside the stem at an internode. The color of pupa changes over time as it matures. Several hours after emergence, the adult finds a mate to copulate, and this process takes place at night. The female lays a cluster of about 80 – 130 eggs in a newly developed bamboo shoot. The ova development takes place around 12 days, and adults live about 8 days. The bamboo caterpillar has only one lifecycle per year. Additionally, adults often appear in early July through to the middle of August. They lay eggs from the middle of July to the end of August. The larval period lasts from September to May. A larva metamorphoses into a chrysalis at the end of May to early July. The larvae then undergo a period of diapause, which lasts from the end of October to May. Bamboo caterpillar are confronted with many natural enemies such as woodpecker, house gecko and ant species.<\/p>\n

Keywords:<\/i> Biological characteristics, bamboo caterpillar, morphological characteristics, Omphisia fuscidentalis<\/i><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110\u1ed8NG TH\u00c1I T\u00c1I SINH T\u1ef0 NHI\u00caN 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<\/b><\/p>\n

Nguy\u1ec5n \u0110\u1eafc Tri\u1ec3n1<\/sup>, Tr\u1ea7n V\u0103n Con2<\/sup>, B\u00f9i Th\u1ebf \u0110\u1ed3i3<\/sup>, Ng\u00f4 Th\u1ebf Long1
\n1<\/i><\/sup>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
\n3<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 theo d\u00f5i \u0111\u1ed9ng th\u00e1i r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh t\u1eeb 3 \u00f4 ti\u00eau chu\u1ea9n \u0111\u1ecbnh v\u1ecb (1,0ha) t\u1ea1i V\u01b0\u1eddn Qu\u1ed1c gia Xu\u00e2n S\u01a1n cho th\u1ea5y c\u00f3 m\u1ed9t s\u1ef1 t\u00edch t\u1ee5 lo\u00e0i c\u00e2y theo th\u1eddi gian, s\u1ed1 lo\u00e0i m\u1edbi t\u00e1i sinh trong m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh \u00edt h\u01a1n s\u1ed1 lo\u00e0i \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch t\u1ee5 v\u1ec1 th\u1eddi gian \u1edf c\u00e1c l\u1edbp c\u00e2y c\u00f3 tr\u01b0\u1edbc \u0111\u00f3, c\u1ee5 th\u1ec3 s\u1ed1 lo\u00e0i c\u00f3 s\u1ef1 t\u0103ng d\u1ea7n t\u1eeb l\u1edbp c\u00e2y t\u00e1i sinh (CTS: D1.3<\/sub><1,0cm) < t\u1ea7ng c\u00e2y nh\u1ecf (TCN: 1,0cm<D1.3<\/sub><10,0cm) < t\u1ea7ng c\u00e2y cao (TCC: D1.3<\/sub>\u226510,0cm). M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh bi\u1ebfn \u0111\u1ed9ng r\u1ea5t l\u1edbn t\u1eeb 24.444 \u0111\u1ebfn 31.076 c\u00e2y\/ha. S\u1ed1 c\u00e2y t\u00e1i sinh b\u1ed5 sung trung b\u00ecnh l\u00e0 13.418 c\u00e2y\/ha\/n\u0103m v\u00e0 s\u1ed1 c\u00e2y ch\u1ebft l\u00e0 15.977 c\u00e2y\/ha\/n\u0103m. C\u00e2y t\u00e1i sinh c\u00f3 chi\u1ec1u cao d\u01b0\u1edbi 0,5m c\u00f3 t\u1ef7 l\u1ec7 ch\u1ebft h\u00e0ng n\u0103m l\u00e0 74,30%, v\u00e0 tr\u00ean 1,5m l\u00e0 38,3%. Trong chu k\u1ef3 theo d\u00f5i 5 n\u0103m (2007 – 2012), l\u01b0\u1ee3ng c\u00e2y t\u00e1i sinh \u0111\u01b0\u1ee3c b\u1ed5 sung t\u1eeb 64 ng\u00e0n \u0111\u1ebfn 69 ng\u00e0n c\u00e2y\/ha v\u00e0 c\u00f3 t\u1eeb 73 ng\u00e0n \u0111\u1ebfn 85 ng\u00e0n c\u00e2y\/ha c\u00e2y b\u1ecb ch\u1ebft. S\u1ed1 c\u00e2y t\u00e1i sinh chuy\u1ec3n l\u00ean t\u1ea7ng c\u00e2y nh\u1ecf bi\u1ebfn \u0111\u1ed9ng t\u1eeb 116 \u0111\u1ebfn 382 c\u00e2y\/ha. S\u1ed1 c\u00e2y chuy\u1ec3n ra kh\u1ecfi t\u1ea7ng c\u00e2y nh\u1ecf \u0111\u1ec3 b\u1ed5 sung v\u00e0o t\u1ea7ng c\u00e2y cao t\u1eeb 3 \u0111\u1ebfn 43 c\u00e2y\/ha, s\u1ed1 c\u00e2y ch\u1ebft \u1edf t\u1ea7ng c\u00e2y nh\u1ecf bi\u1ebfn \u0111\u1ed9ng t\u1eeb 99 \u0111\u1ebfn 184 c\u00e2y\/ha. S\u1ed1 c\u00e2y ch\u1ebft \u1edf t\u1ea7ng c\u00e2y cao bi\u1ebfn \u0111\u1ed9ng t\u1eeb 6 \u0111\u1ebfn 90 c\u00e2y\/ha.T\u1eeb kh\u00f3a:<\/i> \u0110\u1ed9ng th\u00e1i t\u00e1i sinh, r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh, V\u01b0\u1eddn Qu\u1ed1c gia Xu\u00e2n S\u01a1n<\/p>\n

Regeneration dynamics of broadleaf evergreen forests in Xuan Son National Park, Phu Tho provice<\/b><\/p>\n

The observation of dynamics of broadleaf evergreen forests in the three permenant plots (each 1ha) suggested that there existed a species accumulation in time; the number new regenerated species in a certain period was lower than that of species accumulated in the older tree layers, specifically, there was an increasing in the number of species from tree regeneration layer (CTS:D1.3<\/sub><1.0cm) < low tree layer (TCN: 1.0cm<D1.3<\/sub><10.0cm) < high tree layer (TCC: D1.3<\/sub>\u226510.0cm). The tree regeneration density considerably fluctuated from 24,444 to 31,076 trees\/ha. The number of regenerating trees was 13,418 trees\/ha\/year supplemented and 15,977 trees\/ha\/year died on average. The dead rate of regenerating trees was 73.30% for trees below 0.5m and 38.3% for trees above 1.5m in high. In a 5 – year observation period (2007 – 2012), from 64,000 to 69,000 regenerating trees\/ha was supplemented and from 73,000 to 85,000 trees\/ha died. The number of regenerating trees reached to the low tree layer ranged from 116 to 382 trees\/ha. The tree number of the low tree layer was from 3 to 43 trees\/ha for trees reached to the high tree layer, and from 99 to 184 trees\/ha for trees died. The dead tree number of the high tree layer changed from 6 to 90 trees\/ha.<\/p>\n

Keywords:<\/i> Regeneration dynamics, broadleaf evergreen forests, Xuan Son National Park<\/p>\n

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

K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U K\u1ef8 THU\u1eacT CH\u0102M S\u00d3C, TH<\/b>\u1edcI V\u1ee4 TR\u1ed2NG R\u1eeaNG V\u00c0 TI\u00caU CHU\u1ea8N C\u00c2Y CON KEO L\u00c1 LI\u1ec0M (Acacia crassicarpa) <\/i>TR\u00caN V\u00d9NG \u0110\u1ea4T C\u00c1T KHU V\u1ef0C B\u1eaeC TRUNG B\u1ed8<\/b><\/p>\n

\u0110\u1eb7ng Th\u00e1i D\u01b0\u01a1ng, \u0110\u1eb7ng Th\u00e1i Ho\u00e0ng
\nTr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Hu\u1ebf<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m \u0111\u00e3 t\u00ecm ra \u0111\u01b0\u1ee3c k\u1ef9 thu\u1eadt ch\u0103m s\u00f3c r\u1eebng tr\u1ed3ng: Vun g\u1ed1c + bo\u0301n 50g NPK l\u00e0 th\u00edch h\u1ee3p nh\u1ea5t, cho sinh kh\u1ed1i v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u00e2y cao nh\u1ea5t so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c: Kh\u00f4ng vun g\u1ed1c + bo\u0301n 50g NPK, Vun g\u1ed1c + kh\u00f4ng b\u00f3n ph\u00e2n, Kh\u00f4ng vun g\u1ed1c + kh\u00f4ng b\u00f3n ph\u00e2n. K\u00ea\u0301t qua\u0309 nghi\u00ean c\u01b0\u0301u th\u01a1\u0300i v\u1ee5 tr\u1ed3ng cho th\u1ea5y tr\u1ed3ng va\u0300o th\u00e1ng 11 cho t\u1ef7 l\u1ec7 s\u1ed1ng cao nh\u1ea5t v\u1edbi 95,6% v\u1edbi\u00a0<\/sub>= 4,05 > \u00a0= 3,84, tuy nhi\u00ean sinh kh\u1ed1i c\u00e2y tr\u1ed3ng th\u00e1ng 11 va\u0300 th\u00e1ng 2 kh\u00f4ng c\u00f3 s\u1ef1 sai kh\u00e1c ro\u0303 r\u00ea\u0323t v\u01a1\u0301i Ft<\/sub> = 0,62 < F05 <\/sub>=7,7. Th\u00ed nghi\u1ec7m ti\u00eau chu\u00e2\u0309n c\u00e2y con cho th\u00e2\u0301y c\u00e2y tr\u00f4\u0300ng 4 th\u00e1ng va\u0300 6 tha\u0301ng tu\u1ed5i kh\u00f4ng co\u0301 s\u01b0\u0323 sai kha\u0301c ro\u0303 r\u00ea\u0323t v\u00ea\u0300 t\u1ef7 l\u1ec7 s\u1ed1ng v\u1edbi gi\u00e1 tr\u1ecb= 0,2 <= 3,84 cu\u0303ng nh\u01b0 sinh kh\u00f4\u0301i (gi\u00e1 tr\u1ecb Ft<\/sub> = 0,15 < F05 <\/sub>= 7,7). Vi\u0300 v\u00e2\u0323y, n\u00ean ch\u1ecdn tr\u1ed3ng c\u00e2y 4 th\u00e1ng tu\u1ed5i \u0111\u1ec3 gi\u1ea3m c\u00f4ng s\u1ee9c v\u00e0 chi ph\u00ed ch\u0103m s\u00f3cT\u1eeb kh\u00f3a:<\/i> B\u1eafc Trung B\u1ed9, \u0111\u1ea5t c\u00e1t, keo l\u00e1 li\u1ec1m, k\u1ef9 thu\u1eadt ch\u0103m s\u00f3c, th\u01a1\u0300i v\u1ee5 tr\u1ed3ng, ti\u00eau chu\u00e2\u0309n c\u00e2y con.<\/p>\n

Result of studying tending technique, planting season and seedling age of Acacia crassicarpa <\/i>in the Central Coastal Area<\/b><\/p>\n

The result shows that with tending techniques: root cover + 50g <\/i>NPK is the most suitable, bringing highest living ratio and biomass compare to other methods: uncover + 50g NPK, Root cover + no fertilizer, Uncover + no fertilizer. Result of planting season show that it is best to plant in November bringing highest living ratio. However, there was no difference in the tree biomass between the panting seasons. The result of seedling age show that there was no difference between the 4 month and 6 month old seedlings. Thus, we should choose the 4 month old to reduce the cost. From this, the study chose the tending technique: root cover + 50g NPK, planting seaon in November and seedling age of 4 month old.<\/p>\n

Keywords:<\/i> Northern Central, sandy soil, Acacia crassicarpa<\/i>, stending techniques, planting season, seedling age<\/p>\n

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

SINH TR\u01af\u1edeNG, N\u0102NG SU\u1ea4T V\u00c0 KH\u1ea2 N\u0102NG KINH DOANH R\u1eeaNG TR\u1ed2NG G\u1ed6 L\u1edaN M\u1ed8T S\u1ed0 LO\u00c0I C\u00c2Y CH\u1ee6 L\u1ef0C \u1ede B\u00ccNH \u0110\u1ecaNH V\u00c0 PH\u00da Y\u00caN, V\u00d9NG NAM TRUNG B\u1ed8<\/b><\/p>\n

Nguy\u1ec5n Xu\u00e2n Qu\u00e1t1<\/sup>, Ph\u1ea1m \u0110\u00ecnh S\u00e2m2<\/sup>, Cao V\u0103n L\u1ea1ng2<\/b>
\n1<\/i><\/sup>H\u1ed9i Khoa h\u1ecdc k\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Ti\u1ebfp c\u1eadn theo c\u00e1ch k\u1ebft h\u1ee3p \u0111\u00e1nh gi\u00e1 t\u1ed5ng h\u1ee3p hi\u1ec7n tr\u1ea1ng r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t v\u00e0 r\u1eebng tr\u1ed3ng ph\u00f2ng h\u1ed9 c\u00e1c lo\u00e0i keo 6-21 tu\u1ed5i, g\u1eafn v\u1edbi c\u00e1c d\u1ea1ng l\u1eadp \u0111\u1ecba v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111\u1ea5t n\u01a1i tr\u1ed3ng \u1edf B\u00ecnh \u0110\u1ecbnh v\u00e0 Ph\u00fa Y\u00ean b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u1ee5 th\u1ec3 v\u00e0 k\u1ef9 thu\u1eadt chuy\u00ean d\u1ee5ng nh\u1eb1m t\u00ecm ki\u1ebfm c\u00e1c m\u00f4 h\u00ecnh c\u00f3 tri\u1ec3n v\u1ecdng cho kinh doanh g\u1ed7 l\u1edbn \u0111\u1ec3 \u1ee9ng d\u1ee5ng v\u00e0 ph\u00e1t tri\u1ec3n. Theo \u0111\u00f3 k\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c l\u00e0:- V\u1ec1 n\u0103ng su\u1ea5t theo tr\u1eef l\u01b0\u1ee3ng g\u1ed7 kh\u00f4ng c\u00f3 m\u00f4 h\u00ecnh n\u00e0o \u0111\u1ea1t m\u1ee9c l\u1edbn h\u01a1n 20m3<\/sup>\/ha\/n\u0103m, ph\u00e2n c\u1ea5p n\u0103ng su\u1ea5t theo lo\u00e0i c\u00f3 7 m\u00f4 h\u00ecnh c\u00f3 tri\u1ec3n v\u1ecdng g\u1ed3m 4 m\u00f4 h\u00ecnh keo lai (A. mangium<\/i> \u00b4 A. auriculiformis<\/i>) + 2 m\u00f4 h\u00ecnh Keo tai t\u01b0\u1ee3ng (Acacia mangium<\/i>) cho n\u0103ng su\u1ea5t m\u1ee9c trung b\u00ecnh (15 \u2264 M < 20m3<\/sup>\/ha\/n\u0103m) + 1 m\u00f4 h\u00ecnh Keo l\u00e1 tr\u00e0m (Acacia auriculiformis<\/i>) cho n\u0103ng su\u1ea5t trung b\u00ecnh \u0111\u1ea1t (10 \u2264 M < 15m3<\/sup>\/ha\/n\u0103m).- V\u1ec1 c\u00e1c d\u1ea1ng l\u1eadp \u0111\u1ecba c\u1ee7a c\u00e1c m\u00f4 h\u00ecnh tri\u1ec3n v\u1ecdng c\u00f3 n\u0103ng su\u1ea5t t\u1eeb m\u1ee9c trung b\u00ecnh tr\u1edf l\u00ean \u0111\u1ec1u n\u1eb1m \u1edf v\u00e0nh \u0111ai \u0111\u1ed9 cao tuy\u1ec7t \u0111\u1ed1i t\u1eeb 30 – 371m, d\u1ed1c \u226415\u00b0; \u0111\u1ea5t v\u00e0ng hay \u0111\u1ecf ph\u00e1t tri\u1ec3n tr\u00ean \u0111\u00e1 ph\u00fan xu\u1ea5t chua hay m\u00e1c ma ki\u1ec1m, t\u1ea7ng \u0111\u1ea5t t\u1eeb trung b\u00ecnh \u0111\u1ebfn d\u00e0y, th\u1ef1c b\u00ec tr\u01b0\u1edbc khi tr\u1ed3ng r\u1eebng thu\u1ed9c lo\u1ea1i kh\u00e1.- V\u1ec1 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd – h\u00f3a h\u1ecdc c\u1ee7a \u0111\u1ea5t t\u1ea7ng m\u1eb7t c\u00f3 dung tr\u1ecdng d\u01b0\u1edbi 1,50g\/cm3<\/sup>; h\u00e0m l\u01b0\u1ee3ng s\u00e9t v\u1eadt l\u00fd t\u1eeb 50 – 70%; pHKCl<\/sub> t\u1eeb 3,7 – 4,2, t\u1ef7 l\u1ec7 m\u00f9n \u0111\u1ea1t t\u1eeb 1,14 – 4,20%; kh\u1ea3 n\u0103ng h\u1ea5p ph\u1ee5 trao \u0111\u1ed5i (CEC) t\u1eeb 5,63 – 42,78 me\/100gam \u0111\u1ea5tT\u1eeb kh\u00f3a:<\/i> G\u1ed7 l\u1edbn, n\u0103ng su\u00e2\u0301t, l\u1eadp \u0111\u1ecba, \u0111\u1ea5t, c\u00e1c lo\u00e0i keo, v\u00f9ng Nam Trung B\u1ed9<\/p>\n

Growth<\/b> and productivity of <\/b>timber<\/b> <\/b>plantations of some main<\/b> <\/b>species<\/b> <\/b>in<\/b> <\/b>Binh Dinh<\/b> <\/b>and<\/b> <\/b>Phu<\/b> <\/b>Yen<\/b>, <\/b>South Central<\/b> <\/b>region<\/b><\/p>\n

Combining assessment of forest status of productive plantations and protective plantations of Acacia species being age of 6-21 with the site conditions and characteristics of the soils where planting in Binh Dinh and Phu Yen provinces with specific methods and special techniques identify potential models for providing large timber to apply and develop. The results including:<\/p>\n

– Timber volume: There is no models achieved average timber volume above of 20m3<\/sup>\/ha\/year. It is classified by species, there are 7 potential models including: 4 models of A. mangium<\/i> \u00b4 A. auriculiformis<\/i> species, 2 models of A. mangium<\/i> with average timber volume of 15 \u2264 M < 20m3<\/sup>\/ha\/year, and 1 model of Acacia auriculiformis<\/i> species with average timber volume of 10 \u2264 M < 15 m3<\/sup>\/ha\/year.<\/p>\n

– Site condition of potential models located in the belt absolute height of 30 – 371m, slope \u2264 15\u00b0; yellow or red soils developed on sour rock or alkaline magma, soil layer is from medium to thick, vegetation before planting is medium.<\/p>\n

– Physical – chemical properties of topsoil: Bulk density below 1.50g\/cm3<\/sup>, physical clay content of 50-70%, pHKCl<\/sub> of 3.7 – 4.2, humus proportion of 1.14 – 4.20%, CEC from 5.63 to 42.78 me\/100 grams of dry soil.<\/p>\n

Keywords:<\/i> Timber – productivity, site condition, soil, acacia species, the South Central<\/p>\n

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

NGHI\u00caN C\u1ee8U NH\u1eacN TH\u1ee8C V\u00c0 T\u00c1C \u0110\u1ed8NG C\u1ee6A C\u1ed8NG \u0110\u1ed2NG
\nB\u1ea2N \u0110\u1ecaA \u0110\u1ebeN LO\u00c0I VO\u1eccC CH\u00c0 V\u00c1 CH\u00c2N X\u00c1M (Pygathrix cinerea<\/i>) \u1ede V\u01af\u1edcN QU\u1ed0C GIA KON KA KINH, T\u1ec8NH GIA LAI<\/b><\/p>\n

Ho\u00e0ng V\u0103n Ch\u01b0\u01a1ng1<\/sup>, H\u00e0 Th\u0103ng Long1<\/sup>, Tr\u1ea7n Th\u1ecb Kim Ly2<\/sup>, Nguy\u1ec5n Th\u1ecb Kim Y\u1ebfn1
\n1<\/i><\/sup>H\u1ed9i \u0110\u1ed9ng v\u1eadt h\u1ecdc Frankfurt t\u1ea1i Vi\u1ec7t Nam,
\n2<\/sup>Trung t\u00e2m B\u1ea3o t\u1ed3n \u0111a d\u1ea1ng sinh h\u1ecdc N\u01b0\u1edbc Vi\u1ec7t Xanh (GreenViet)<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Vo\u1ecdc ch\u00e0 v\u00e1 ch\u00e2n x\u00e1m (Pygathrix cinerea<\/i>) \u0111\u01b0\u1ee3c ghi nh\u1eadn ph\u00e2n b\u1ed1 t\u1ea1i v\u01b0\u1eddn qu\u1ed1c gia Kon Ka Kinh, l\u00e0 lo\u00e0i linh tr\u01b0\u1edfng n\u1eb1m trong b\u1eadc x\u1ebfp lo\u1ea1i c\u1ef1c k\u1ef3 nguy c\u1ea5p trong danh l\u1ee5c \u0111\u1ecf th\u1ebf gi\u1edbi. Trong nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 \u0111i\u1ec1u tra, \u0111\u00e1nh gi\u00e1 nh\u1eadn th\u1ee9c c\u1ee7a c\u1ed9ng \u0111\u1ed3ng ng\u01b0\u1eddi Ba Na v\u1ec1 lo\u00e0i Vo\u1ecdc Ch\u00e0 v\u00e1 ch\u00e2n x\u00e1m (CVCX), c\u00f9ng t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u1ed9ng \u0111\u1ed3ng \u0111\u1ebfn lo\u00e0i linh tr\u01b0\u1edfng qu\u00fd hi\u1ebfm n\u00e0y. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra cho th\u1ea5y 63% s\u1ed1 l\u01b0\u1ee3ng ng\u01b0\u1eddi \u0111\u01b0\u1ee3c h\u1ecfi bi\u1ebft \u0111\u1ebfn s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a lo\u00e0i Vo\u1ecdc CVCX, tuy nhi\u00ean c\u00f3 \u0111\u1ebfn 59% c\u1ed9ng \u0111\u1ed3ng kh\u00f4ng bi\u1ebft \u0111\u00e2y l\u00e0 lo\u00e0i \u0111\u01b0\u1ee3c ph\u00e1p lu\u1eadt b\u1ea3o v\u1ec7, c\u0169ng nh\u01b0 s\u1ef1 c\u1ea7n thi\u1ebft b\u1ea3o t\u1ed3n lo\u00e0i. T\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp ch\u00ednh \u0111\u1ebfn lo\u00e0i Vo\u1ecdc CVCX l\u00e0 s\u0103n b\u1eaft ch\u1ee7 y\u1ebfu b\u1eb1ng s\u00fang t\u1ef1 ch\u1ebf, ngo\u00e0i ra lo\u00e0i c\u00f2n ch\u1ecbu t\u00e1c \u0111\u1ed9ng m\u1ea5t m\u00f4i tr\u01b0\u1eddng s\u1ed1ng t\u1eeb ho\u1ea1t \u0111\u1ed9ng khai th\u00e1c g\u1ed7, l\u00e0m r\u1eaby c\u1ee7a c\u1ed9ng \u0111\u1ed3ng \u0111\u1ecba ph\u01b0\u01a1ng. C\u00e1c ho\u1ea1t \u0111\u1ed9ng khai th\u00e1c l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 c\u0169ng gi\u00e1n ti\u1ebfp t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn n\u01a1i \u1edf v\u00e0 t\u1eadp t\u00ednh c\u1ee7a lo\u00e0i n\u00e0y. C\u1ea7n tuy\u00ean truy\u1ec1n, n\u00e2ng cao nh\u1eadn th\u1ee9c c\u1ee7a c\u1ed9ng \u0111\u1ed3ng \u0111\u1ecba ph\u01b0\u01a1ng v\u1ec1 b\u1ea3o t\u1ed3n t\u00e0i nguy\u00ean r\u1eebng (TNR) n\u00f3i chung v\u00e0 lo\u00e0i Vo\u1ecdc CVCX n\u00f3i ri\u00eang, \u0111\u1ed3ng th\u1eddi t\u0103ng c\u01b0\u1eddng qu\u1ea3n l\u00fd, khuy\u1ebfn kh\u00edch s\u1ef1 tham gia c\u1ee7a c\u1ed9ng \u0111\u1ed3ng v\u00e0o qu\u1ea3n l\u00fd TNR c\u1ee7a BQL VQG; C\u1ea3i thi\u1ec7n sinh k\u1ebf c\u1ed9ng \u0111\u1ed3ng v\u00f9ng \u0111\u1ec7m VQG Kon Ka Kinh.T\u1eeb kh\u00f3a:<\/i> C\u1ed9ng \u0111\u1ed3ng b\u1ea3n \u0111\u1ecba, nh\u1eadn th\u1ee9c c\u1ed9ng \u0111\u1ed3ng, t\u00e1c \u0111\u1ed9ng, Vo\u1ecdc Ch\u00e0 v\u00e1 ch\u00e2n x\u00e1m, VQG Kon Ka Kinh<\/p>\n

Study on the indigenous community awareness and impact on grey-shanked douc langur (Pygathrix cinerea<\/i>) in Kon Ka Kinh National Park, Gia Lai province<\/b><\/p>\n

Grey – shanked Douc Langur (Pygathrix cinerea<\/i>) was recognized distribution in Kon Ka Kinh National Park. This species is classified as Critically Endangered (CR) on the IUCN Red List. In this study, we investigated the Ba Na ethnic community knowledge, their attitude toward the Grey -shanked Douc Langur and the awareness about the law to protect this species. The results showed that 63% responders know about the existence of Grey – shanked douc in Kon Ka Kinh National Park, however 59% responders don’t know about the conservation laws as well as the necessary to protect this species. The main directly impacts to species was hunting by homemade guns. Other impact was losing habitat by logging, burning forests for cultivation of local communities. The exploitation of NTFPs also indirectly affect habitat and behavior of this species. It is necessary to raise awareness of forest resources conservation (in general) and grey shanked douc langur conservation of local communities; strengthening management capacity and encouraging community participation in the forest resources management; improving livelihoods of community living in Kon Ka Kinh National Park buffer zone.<\/p>\n

Keywords:<\/i> Awareness, Grey – shanked Douc Langur, impact, Kon Ka Kinh National Park, local community<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u00cdNH \u0110A D\u1ea0NG TH\u00c0NH PH\u1ea6N LO\u00c0I TH\u00da T\u1ea0I KHU B\u1ea2O T\u1ed2N THI\u00caN NHI\u00caN NG\u1eccC S\u01a0N – NG\u1ed4 LU\u00d4NG, T\u1ec8NH H\u00d2A B\u00ccNH<\/b><\/p>\n

\u0110\u1ed3ng Thanh H\u1ea3i
\nTr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean (KBTTN) Ng\u1ecdc S\u01a1n – Ng\u1ed5 Lu\u00f4ng \u0111\u1eb7c tr\u01b0ng b\u1edfi h\u1ec7 sinh th\u00e1i r\u1eebng tr\u00ean n\u00fai \u0111\u00e1 v\u00f4i v\u1edbi t\u00ednh \u0111a d\u1ea1ng sinh h\u1ecdc cao. Tuy nhi\u00ean, nghi\u00ean c\u1ee9u v\u1ec1 t\u00ednh \u0111a d\u1ea1ng th\u00e0nh ph\u1ea7n lo\u00e0i th\u00fa, \u0111\u1eb7c bi\u1ec7t c\u00e1c th\u00f4ng tin c\u1eadp nh\u1eadt v\u1ec1 s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a c\u00e1c lo\u00e0i th\u00fa c\u0169ng nh\u01b0 c\u00e1c m\u1ed1i \u0111e d\u1ecda \u0111\u1ebfn lo\u00e0i v\u00e0 sinh c\u1ea3nh c\u00f2n h\u1ea1n ch\u1ebf. Nghi\u00ean c\u1ee9u n\u00e0y s\u1ebd t\u1eadp trung l\u00e0m r\u00f5 c\u00e1c th\u00f4ng tin tr\u00ean v\u00e0 \u0111\u1ec1 xu\u1ea5t c\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o t\u1ed3n cho khu h\u1ec7 th\u00fa t\u1ea1i KBT. Thu th\u1eadp s\u1ed1 li\u1ec7u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh trong 2 \u0111\u1ee3t n\u0103m 2014 v\u00e0 2015. Ph\u01b0\u01a1ng ph\u00e1p ph\u1ecfng v\u1ea5n, ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra theo tuy\u1ebfn v\u00e0 \u0111i\u1ec3m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thu th\u1eadp s\u1ed1 li\u1ec7u li\u00ean quan \u0111\u1ebfn n\u1ed9i dung nghi\u00ean c\u1ee9u. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra ghi nh\u1eadn \u0111\u01b0\u1ee3c 94 lo\u00e0i th\u00fa thu\u1ed9c 28 h\u1ecd, 9 b\u1ed9. Trong \u0111\u00f3, 46 (chi\u1ebfm 50%) lo\u00e0i th\u00fa \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh quan tr\u1ecdng \u01b0u ti\u00ean cho c\u00f4ng t\u00e1c b\u1ea3o t\u1ed3n. Hai m\u1ed1i \u0111e d\u1ecda ch\u00ednh \u0111\u1ebfn khu h\u1ec7 th\u00fa l\u00e0 s\u0103n b\u1eafn v\u00e0 ph\u00e1 h\u1ee7y sinh c\u1ea3nh s\u1ed1ng (khai th\u00e1c g\u1ed7 tr\u00e1i ph\u00e9p, l\u1ea5n chi\u1ebfn \u0111\u1ea5t r\u1eebng l\u00e0m n\u01b0\u01a1ng r\u1eaby, ch\u0103n th\u1ea3 gia s\u00fac…). Ba gi\u1ea3i ph\u00e1p nh\u1eb1m n\u00e2ng cao hi\u1ec7u qu\u1ea3 qu\u1ea3n l\u00fd b\u1ea3o t\u1ed3n khu h\u1ec7 th\u00fa bao g\u1ed3m: B\u1ea3o t\u1ed3n lo\u00e0i v\u00e0 sinh c\u1ea3nh, x\u00e2y d\u1ef1ng ch\u01b0\u01a1ng tr\u00ecnh gi\u00e1m s\u00e1t, c\u1ea3i thi\u1ec7n sinh k\u1ebf cho ng\u01b0\u1eddi d\u00e2n.T\u1eeb kh\u00f3a:<\/i> Th\u00fa, th\u00e0nh ph\u1ea7n lo\u00e0i, m\u1ed1i \u0111e d\u1ecda, Ng\u1ecdc S\u01a1n – Ng\u1ed5 Lu\u00f4ng, H\u00f2a B\u00ecnh<\/p>\n

Diversity of mammals In Ngoc Son – Ngo Luong Nature Reserve, Hoa Binh province<\/b><\/p>\n

Ngoc Son – Ngo Luong nature reserve (NR) characterized by forest ecosystems on limestone are considered with high biological diversity. However, research on diversity of mammal composition, especially the updated information on the presence of the animals as well as the threats to the species and habitats are limited. This research will focus on revealing the above information and recommended conservation measures for fauna reserve. Data collection was conducted in 2 times: 2014 and 2015. Interview, line transects, and point methods were used to collect data. The results show that a total of 94 species of mammals belonging to 28 families, 9 sets were recorded in the reserve. Of these, 46 (50%) animals are identified important priorities for conservation. The two main threats to the mammal species are hunting and habitat destruction (illegal logging, encroachment of forest land for cultivation strategy, grazing…). Three solutions to improve the efficiency of managing conservation mammal species were recommended including: Protection of species and habitats, developing monitoring programs, improved livelihoods for local people.<\/p>\n

Keywords:<\/i> Mammals, composition, threats, Ngoc Son – Ngo Luong, Nature Reserve<\/p>\n

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

\u0110\u00c1NH GI\u00c1 \u0110A D\u1ea0NG SINH H\u1eccC, C\u1ea2NH QUAN V\u00c0
\nTI\u1ec0M N\u0102NG PH\u00c1T TRI\u1ec2N DU L\u1ecaCH SINH TH\u00c1I
\nT\u1ea0I KHU B\u1ea2O T\u1ed2N THI\u00caN NHI\u00caN KIM H\u1ef6 T\u1ec8NH B\u1eaeC K\u1ea0N<\/b><\/p>\n

\u0110\u1ed3ng Thanh H\u1ea3i, Ph\u00f9ng V\u0103n Ph\u00ea
\nTr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean Kim H\u1ef7 thu\u1ed9c Huy\u1ec7n Na R\u00ec, t\u1ec9nh B\u1eafc K\u1ea1n, \u0111i\u1ec3n h\u00ecnh cho h\u1ec7 sinh th\u00e1i r\u1eebng tr\u00ean n\u00fai \u0111\u00e1 v\u00f4i mi\u1ec1n B\u1eafc Vi\u1ec7t Nam, \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u00f3 t\u00ednh \u0111a d\u1ea1ng cao v\u1ec1 th\u00e0nh ph\u1ea7n lo\u00e0i \u0111\u1ed9ng th\u1ef1c v\u1eadt, v\u00e0 nhi\u1ec1u th\u1eafng c\u1ea3nh \u0111\u1eb9p. \u0110\u00e2y l\u00e0 \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i \u0111\u1ec3 ph\u00e1t tri\u1ec3n du l\u1ecbch sinh th\u00e1i (DLST). Nghi\u00ean c\u1ee9u \u0111\u00e3 k\u1ebft h\u1ee3p nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p nh\u01b0: ph\u1ecfng v\u1ea5n, thu th\u1eadp t\u00e0i li\u1ec7u th\u1ee9 c\u1ea5p, \u0111i\u1ec1u tra theo tuy\u1ebfn \u0111\u1ec3 thu th\u1eadp s\u1ed1 li\u1ec7u. K\u1ebft qu\u1ea3 \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c nh\u00f3m th\u1ef1c v\u1eadt v\u00e0 \u0111\u1ed9ng v\u1eadt, v\u00e0 10 d\u1ea1ng c\u1ea3nh quan c\u00f3 ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n DLST t\u1ea1i khu b\u1ea3o t\u1ed3n (KBT). Nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e2n t\u00edch \u0111\u01b0\u1ee3c \u0111i\u1ec3m m\u1ea1nh, \u0111i\u1ec3m y\u1ebfu, c\u01a1 h\u1ed9i, th\u00e1ch th\u1ee9c v\u00e0 \u0111\u1ecbnh h\u01b0\u1edbng ph\u00e1t tri\u1ec3n DLST cho KBT. Thi\u1ebft k\u1ebf \u0111\u01b0\u1ee3c 4 tuy\u1ebfn ch\u00ednh v\u00e0 2 tuy\u1ebfn k\u1ebft n\u1ed1i cho du l\u1ecbch d\u00e3 ngo\u1ea1i thi\u00ean nhi\u00ean – th\u00e1m hi\u1ec3m k\u1ebft h\u1ee3p v\u1edbi tham quan t\u00ecm hi\u1ec3u v\u0103n h\u00f3a \u0111\u1ecba ph\u01b0\u01a1ng. N\u0103m gi\u1ea3i ph\u00e1p ch\u00ednh \u0111\u1ec3 ph\u00e1t tri\u1ec3n du l\u1ecbch sinh th\u00e1i k\u1ebft h\u1ee3p v\u1edbi b\u1ea3o t\u1ed3n \u0111a d\u1ea1ng sinh h\u1ecdc nh\u1eb1m t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho ng\u01b0\u1eddi d\u00e2n ngh\u00e8o trong v\u00e0 ngo\u00e0i KBT c\u1ea3i thi\u1ec7n \u0111\u1eddi s\u1ed1ng: Gi\u1ea3i ph\u00e1p v\u1ec1 qu\u1ea3n l\u00fd, gi\u1ea3i ph\u00e1p v\u1ec1 c\u01a1 ch\u1ebf ch\u00ednh s\u00e1ch, v\u1ec1 \u0111\u00e0o t\u1ea1o, v\u1ec1 ti\u1ebfp th\u1ecb v\u00e0 gi\u1ea3i ph\u00e1p v\u1ec1 h\u1ee3p t\u00e1c \u0111\u1ea7u t\u01b0.T\u1eeb kh\u00f3a:<\/i> \u0110a d\u1ea1ng sinh h\u1ecdc, c\u1ea3nh quan, du l\u1ecbch sinh th\u00e1i, Kim H\u1ef7, B\u1eafc C\u1ea1n<\/p>\n

Assessment of biodiversity, landscapes and potential ecotourism development in Kim Hy Nature Reserve, Bac Kan province<\/b><\/p>\n

Kim Hy nature reserve located in Na Ri District, Bac Kan Province, typical of forest ecosystems on limestone in Northern Vietnam, is considered to have a high diversity of plant and animal species composition, and beautiful landscapes. These are favorable conditions for the development of ecotourism. Research has combined several methods such as interviewing, line transects to collect data. The results show that several potential group of plants and animals, and 10 landscapes for ecotourism were identified in the reserve.<\/p>\n

The study has analyzed the strengths, weaknesses, opportunities, challenges and development orientations for protected area ecotourism. Four (4) main tourist routes and 2 connective tourist routes were developed for nature tourist excursions, nature-explorer tour combined with local cultural understanding. Five key solutions are recommended for developing ecotourism combined with conservation of biodiversity in order to create conditions for livelihood improvement for reserve and local communities living in and outside the reserve incluidng management, solutions for policy mechanisms and training, marketing, investment.<\/p>\n

Keywords:<\/i> Biodiversity, landscapes, ecotourism, Kim Hy Nature Reserve, Bac Kan<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110\u00c1NH GI\u00c1 HI\u1ec6U QU\u1ea2 KINH T\u1ebe, X\u00c3 H\u1ed8I V\u00c0 M\u00d4I TR\u01af\u1edcNG
\nC\u1ee6A M\u1ed8T S\u1ed0 M\u00d4 H\u00ccNH R\u1eeaNG TR\u1ed2NG S\u1ea2N XU\u1ea4T
\nT\u1ea0I HUY\u1ec6N TH\u1ea0CH H\u00c0, T\u1ec8NH H\u00c0 T\u0128NH<\/b><\/p>\n

Nguy\u1ec5n H\u1ea3i H\u00f2a1<\/sup>, V\u00f5 Anh \u0110\u1ee9c2
\n1<\/i><\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> H\u1ea1t Ki\u1ec3m l\u00e2m huy\u1ec7n Th\u1ea1ch H\u00e0 – t\u1ec9nh H\u00e0 T\u0129nh<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o n\u00e0y tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch b\u01b0\u1edbc \u0111\u1ea7u v\u1ec1 \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u1ee7a 3 m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng thu\u1ea7n lo\u00e0i 7 n\u0103m tu\u1ed5i (2007 – 2014) keo lai, Keo tai t\u01b0\u1ee3ng v\u00e0 B\u1ea1ch \u0111\u00e0n Uro \u1edf huy\u1ec7n Th\u1ea1ch H\u00e0, t\u1ec9nh H\u00e0 T\u0129nh. D\u1ef1a tr\u00ean c\u00e1c ch\u1ec9 ti\u00eau l\u1ee3i nhu\u1eadn (NPV), t\u1ef7 su\u1ea5t l\u1ee3i nhu\u1eadn (BCR), t\u1ef7 su\u1ea5t thu h\u1ed3i v\u1ed1n n\u1ed9i b\u1ed9 (IRR), c\u00f4ng lao \u0111\u1ed9ng, ch\u1ec9 s\u1ed1 x\u00f3i m\u00f2n Ki, c\u01b0\u1eddng \u0111\u1ed9 x\u00f3i m\u00f2n \u0111\u1ea5t (d) v\u00e0 ch\u1ec9 s\u1ed1 hi\u1ec7u qu\u1ea3 t\u1ed5ng h\u1ee3p (Ect), \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng keo lai thu\u1ea7n lo\u00e0i \u0111\u1ec1u tu\u1ed5i c\u00f3 hi\u1ec7u qu\u1ea3 kinh t\u1ebf, x\u00e3 h\u1ed9i v\u00e0 m\u00f4i tr\u01b0\u1eddng cao nh\u1ea5t so v\u1edbi c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng kh\u00e1c v\u00e0 \u0111\u1ea1t gi\u00e1 tr\u1ecb Ect = 0,97, \u0111\u1ee9ng th\u1ee9 hai l\u00e0 r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng v\u1edbi Ect = 0,94 v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 r\u1eebng tr\u1ed3ng B\u1ea1ch \u0111\u00e0n Uro v\u1edbi Ect = 0,8. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y g\u00f3p ph\u1ea7n l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc cho c\u00e1c nghi\u00ean c\u1ee9u ti\u1ebfp theo v\u1ec1 gi\u1ea3i ph\u00e1p ph\u00e1t tri\u1ec3n, n\u00e2ng cao hi\u1ec7u qu\u1ea3 kinh t\u1ebf, x\u00e3 h\u1ed9i v\u00e0 m\u00f4i tr\u01b0\u1eddng c\u1ee7a c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng \u0111i\u1ec3n h\u00ecnh \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u nh\u1eb1m n\u00e2ng cao thu nh\u1eadp v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1eddi s\u1ed1ng cho ng\u01b0\u1eddi d\u00e2n \u0111\u1ecba ph\u01b0\u01a1ng.T\u1eeb kh\u00f3a:<\/i> Hi\u1ec7u qu\u1ea3 m\u00f4i tr\u01b0\u1eddng, hi\u1ec7u qu\u1ea3 kinh t\u1ebf – x\u00e3 h\u1ed9i, m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t, huy\u1ec7n Th\u1ea1ch H\u00e0, H\u00e0 T\u0129nh<\/p>\n

Socio-economic and environmental assessments of forest plantation models in Thach Ha <\/b>district, Ha Tinh province<\/b><\/p>\n

This paper presents the initial analysis of the effectiveness of the 3 models, namely a model of monoculture forest plantations at a 7- year Acacia forests <\/i>(2007 to 2014), Acacia mangium<\/i> and Eucalyptus<\/i> Uro<\/i> in Thach Ha district, Ha Tinh province. Based on the Net Prevent Value (NPV), Benefit Cost Ratio (BCR), the Internal Rate of Return (IRR), labor, erosion index (Ki), soil erosion intensity (d) and only efficient synthesis of (ECT), the study has identified patterns with monoculture Acacia plantations are the most effective in terms of economic, social and environment effectiveness compared to other models and plantation worth Ect = 0.97, followed by Acacia mangium<\/i> with Ect = 0.94 and the Eucalyptus Uro <\/i>is the least effective with Ect = 0.8. These findings will contribute to the scientific basis for further studies on solution development, enhancement of economic efficiency, social and environmental consequences of the typical plantation model in the study area to improve incomes and living conditions for local people.<\/p>\n

Keywords:<\/i> Environmental effectiveness, socio-economic effectivenesses, forest plantation model, Thach Ha district, Ha Tinh province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

KH\u1ea2 N\u0102NG N\u00c2NG CAO \u0110\u1ed8 \u1ed4N \u0110\u1ecaNH K\u00cdCH TH\u01af\u1edaC
\nC\u1ee6A G\u1ed6 B\u1eb0NG S\u01a0N POLYURETHANE PH\u00c2N T\u00c1N V\u1eacT LI\u1ec6U NANO<\/b><\/p>\n

B\u00f9i V\u0103n \u00c1i, Nguy\u1ec5n Duy V\u01b0\u1ee3ng, Ho\u00e0ng Trung Hi\u1ebfu
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

S\u01a1n PU (polyurethane) ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u TiO2<\/sub> k\u00edch th\u01b0\u1edbc 21nm, nh\u1ecf h\u01a1n 100nm, v\u00e0 s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a ch\u00fang (TiO2<\/sub>) v\u1edbi 02 lo\u1ea1i v\u1eadt li\u1ec7u nanoclay. G\u1ed7 keo lai v\u00e0 B\u1ed3 \u0111\u1ec1 \u0111\u01b0\u1ee3c ph\u1ee7 m\u1eb7t b\u1eb1ng s\u01a1n PU ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u nano \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng gia t\u0103ng \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc. V\u1edbi m\u00e0ng ph\u1ee7 cho g\u1ed7 keo lai, s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a v\u1eadt li\u1ec7u nano l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 gia t\u0103ng \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc l\u00ean h\u01a1n 50% so v\u1edbi m\u00e0ng kh\u00f4ng ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u. Tr\u00e1i l\u1ea1i, v\u1edbi g\u1ed7 B\u1ed3 \u0111\u1ec1, v\u1eadt li\u1ec7u nano ph\u00e2n t\u00e1n trong m\u00e0ng ph\u1ee7 l\u1ea1i l\u00e0m t\u0103ng hi\u1ec7u qu\u1ea3 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc, nh\u01b0ng m\u1ee9c t\u0103ng c\u1ef1c \u0111\u1ea1i c\u0169ng ch\u1ec9 kho\u1ea3ng 16%, khi h\u00e0m l\u01b0\u1ee3ng TiO2<\/sub> lo\u1ea1i <100nm \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n \u1edf m\u1ee9c 1%. S\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a TiO2<\/sub> v\u1edbi nanoclay cho th\u1ea5y lo\u1ea1i clay bi\u1ebfn t\u00ednh c\u00f2n gi\u1eef nguy\u00ean ho\u1eb7c l\u00e0m t\u0103ng hi\u1ec7u qu\u1ea3 nh\u01b0ng kh\u00f4ng \u0111\u00e1ng k\u1ec3, trong khi lo\u1ea1i clay hydrophilic l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 c\u1ee7a m\u00e0ng ph\u1ee7 \u0111i m\u1ed9t ph\u1ea7n. C\u00e1c k\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c cho th\u1ea5y, m\u00e0ng ph\u1ee7 khi \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u nano n\u00e2ng cao kh\u00f4ng nhi\u1ec1u \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc g\u1ed7.T\u1eeb kh\u00f3a:<\/i> \u1ed4n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc, s\u01a1n PU nano,
\ns\u01a1n g\u1ed7<\/p>\n

Dimensional stability of wood through nanomaterials dispered polyurethane coating<\/b><\/p>\n

Polyurethane coating containing nanomaterials of TiO2<\/sub> size 21nm and under 100nm evaluated the improvement of dimensional stability of Acacia hybrid <\/i>and Styrax tonkinensis <\/i>wood. With coatings for Aacacia hybrid<\/i> wood, coatings dispered nanomaterials reduce 50% dimensional stability of wood less than that without nanomaterials. In contrast, addition of TiO2<\/sub> into polyurethane increase dimensional stability of Styrax tonkinensis<\/i> wood. But maximum value of ASE is approximately 16% happening when TiO2<\/sub> with size less than 100nm added. The combination of TiO2<\/sub> and nanoclay in coating only improve dimenional stability in case nanoclay modified. With hydrophilic clay, the combination reduce this property. Almost result of this study indicate that, polyurethane coating improve dimensional stability limited.<\/p>\n

Keywords:<\/i> Dimensional stability, nanocoating, wood coating<\/p>\n

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

\u0110\u00c1NH GI\u00c1 KH\u1ea2 N\u0102NG S\u1eec D\u1ee4NG G\u1ed6 C\u00d3C H\u00c0NH
\n(Azadirachta<\/i><\/b>\u00a0<\/b>excelsa<\/i><\/b>\u00a0<\/b>(Jack) Jacobs)<\/i><\/b><\/p>\n

Nguy\u1ec5n T\u1eed Kim1<\/sup>, Nguy\u1ec5n Tr\u1ecdng Ngh\u0129a1<\/sup>, H\u00e0 Th\u1ecb M\u1eebng2
\n1<\/i><\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng
\n2<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

C\u00f3c h\u00e0nh (Azadirachta<\/i>\u00a0excelsa<\/i>\u00a0(Jack) Jacobs)<\/i> l\u00e0 lo\u00e0i c\u00e2y \u0111a t\u00e1c d\u1ee5ng, b\u1ea3n \u0111\u1ecba v\u00e0 l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng c\u1ee7a m\u1ed9t s\u1ed1 t\u1ec9nh Nam Trung B\u1ed9. Nghi\u00ean c\u1ee9u t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, c\u01a1 h\u1ecdc g\u1ed7 C\u00f3c h\u00e0nh g\u00f3p ph\u1ea7n cung c\u1ea5p c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c s\u1eed d\u1ee5ng lo\u00e0i c\u00e2y n\u00e0y. K\u1ebft qu\u1ea3 cho th\u1ea5y, g\u1ed7 C\u00f3c h\u00e0nh thu th\u1eadp t\u1eeb r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c t\u1ed1t h\u01a1n g\u1ed7 thu th\u1eadp t\u1eeb r\u1eebng tr\u1ed3ng. Trong khi, \u0111\u1ed9 d\u00e3n n\u1edf, co r\u00fat \u1edf c\u1ea3 hai chi\u1ec1u xuy\u00ean t\u00e2m v\u00e0 ti\u1ebfp tuy\u1ebfn, v\u00e0 th\u1ec3 t\u00edch c\u1ee7a g\u1ed7 thu th\u1eadp t\u1eeb r\u1eebng tr\u1ed3ng v\u00e0 r\u1eebng t\u1ef1 nhi\u00ean t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau. G\u1ed7 C\u00f3c h\u00e0nh c\u00f3 c\u00e1c t\u00ednh ch\u1ea5t t\u1eeb trung b\u00ecnh \u0111\u1ebfn cao, \u0111\u1ed9 co r\u00fat v\u00e0 d\u00e3n n\u1edf theo chi\u1ec1u xuy\u00ean t\u00e2m, ti\u1ebfp tuy\u1ebfn v\u00e0 th\u1ec3 t\u00edch trung b\u00ecnh n\u00ean t\u01b0\u01a1ng \u0111\u1ed1i thu\u1eadn l\u1ee3i trong vi\u1ec7c ph\u01a1i s\u1ea5y v\u00e0 s\u1eed d\u1ee5ng g\u1ed7. G\u1ed7 C\u00f3c h\u00e0nh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng m\u1ed9t s\u1ed1 lo\u1ea1i g\u1ed7 x\u1ebfp nh\u00f3m I (\u0111\u1ed1i v\u1edbi g\u1ed7 t\u1eeb r\u1eebng t\u1ef1 nhi\u00ean) v\u00e0 nh\u00f3m II (\u0111\u1ed1i v\u1edbi g\u1ed7 t\u1eeb r\u1eebng tr\u1ed3ng) khi ph\u00e2n lo\u1ea1i theo c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 l\u00fd \u00e1p d\u1ee5ng cho c\u00e1c lo\u1ea1i g\u1ed7 d\u00f9ng \u0111\u1ec3 ch\u1ecbu l\u1ef1c ch\u1ee7 y\u1ebfu l\u00e0 trong x\u00e2y d\u1ef1ng v\u00e0 giao th\u00f4ng v\u1eadn t\u1ea3i. Tuy nhi\u00ean, khi ph\u00e2n lo\u1ea1i theo ti\u00eau ch\u00ed cho s\u1eed d\u1ee5ng g\u1ed7 \u1edf m\u1ed9t s\u1ed1 m\u1ee5c \u0111\u00edch kh\u00e1c th\u00ec g\u1ed7 t\u1eeb r\u1eebng t\u1ef1 nhi\u00ean v\u00e0 r\u1eebng tr\u1ed3ng kh\u00f4ng c\u00f3 kh\u00e1c bi\u1ec7t. G\u1ed7 kh\u00e1 c\u1ee9ng v\u00e0 n\u1eb7ng, c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean cao, m\u1eb7t g\u1ed7 t\u01b0\u01a1ng \u0111\u1ed1i m\u1ecbn, v\u00e2n g\u1ed7 \u00edt nh\u01b0ng g\u1ed7 c\u00f3 m\u00e0u n\u00e2u h\u1ed3ng t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1eb9p n\u00ean kh\u00f4ng ph\u00f9 h\u1ee3p l\u00e0m nguy\u00ean li\u1ec7u s\u1ea3n xu\u1ea5t v\u00e1n m\u1ecfng nh\u01b0ng ph\u00f9 h\u1ee3p cho l\u00e0m c\u1eeda v\u00e0 c\u1ea5u tr\u00fac b\u00ean trong hay l\u00e0m \u0111\u1ed3 m\u1ed9c. G\u1ed7 c\u00f3 h\u1ec7 s\u1ed1 co r\u00fat th\u1ec3 t\u00edch cao n\u00ean c\u1ea7n ch\u00fa \u00fd x\u1eed l\u00fd g\u1ed7 t\u1ed1t tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng, h\u1ea1n ch\u1ebf ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc ho\u1eb7c h\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng \u1edf nh\u1eefng n\u01a1i c\u00f3 \u0111\u1ed9 \u1ea9m cao v\u00e0 thay \u0111\u1ed5i nhi\u1ec1u.T\u1eeb kh\u00f3a:<\/i> C\u00f3c h\u00e0nh, t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, s\u1eed d\u1ee5ng g\u1ed7<\/p>\n

Assessment of the possibility in wood utilization of Azadirachta excelsa<\/i> (Jack) Jacobs<\/b><\/p>\n

Azadirachta<\/i>\u00a0<\/b>excelsa<\/i>\u00a0<\/b>(Jack) Jacobs is an indigenous and multi-purpose tree species. It is one of the major timber for plantation in dry regions of South Central Coast of Vietnam. Study on wood properties of Azadirachta<\/i> <\/b>excelsa<\/i> <\/b>with the purpose of clarifying scientific base for utilization was carried out. Wood of Azadirachta<\/i>\u00a0<\/b>excelsa<\/i> <\/b>collected from natural forests has higher density and strength capability than those of wood collected from plantations. Shrinkage and swelling in both radial and tangential direction and volume of wood collected from plantations or natural forests are similar. Wood properties were at medium to high grade, shrinkage and and swelling in both radial and tangential direction and volume are good characteristics for drying utilization. Wood properties of Azadirachta<\/i> <\/b>excelsa<\/i> <\/b>are similar to wood of some species in group I (for timber from natural forests) and group II (for timber from plantations) as classified according to physical and machenical properties applied to wood used in construction and transportation. However, when classified according to the characteristic for use of timber in some other purposes, the wood from natural forests and plantations are in the same group. Wood of Azadirachta<\/i>\u00a0<\/b>excelsa<\/i> <\/b>is not suitable for veneer production but fairly good for the structure and inner door or furniture due to quyte hard and heavy with durability, wood surface is not very smooth, but brown – pink wood relatively nice to do furniture. Wood should be dried well because of hight shrinkage coefficient in volume and avoided exposure to water or in places with high humidity<\/p>\n

Keywords:<\/i> Azadirachta<\/i>\u00a0excelsa<\/i>, <\/b>wood physical properties, wood machenical properties, wood utilization<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NGHI\u00caN C\u1ee8U M\u1ed8T S\u1ed0 T\u00cdNH CH\u1ea4T G\u1ed6 C\u01a0 B\u1ea2N C\u1ee6A 05 D\u00d2NG B\u1ea0CH \u0110\u00c0N LAI NH\u00c2N T\u1ea0O TR\u1ed2NG T\u1ea0I TR\u1ea0M TH\u1ef0C NGHI\u1ec6M L\u00c2M SINH B\u00c0U B\u00c0NG, T\u1ec8NH B\u00ccNH D\u01af\u01a0NG<\/b><\/p>\n

Nguy\u1ec5n T\u1eed Kim1<\/sup>, Nguy\u1ec5n Th\u1ecb Tr\u1ecbnh1, V\u00f5 \u0110\u1ea1i H\u1ea3i2, Nguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng3
\n1<\/sup><\/i> Vi\u1ec7n <\/i>N<\/i>ghi\u00ean c\u1ee9u c\u00f4ng nghi\u1ec7p r\u1eebng
\n2<\/b> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n3<\/b> Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

V\u1edbi m\u1ee5c ti\u00eau x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 bi\u1ebfn \u0111\u1ed9ng trong t\u00ednh ch\u1ea5t g\u1ed7 c\u01a1 b\u1ea3n c\u1ee7a 05 d\u00f2ng b\u1ea1ch \u0111\u00e0n lai nh\u00e2n t\u1ea1o UE3, UC1, UE4, GU94, UE24 tr\u1ed3ng t\u1ea1i Tr\u1ea1m th\u1ef1c nghi\u1ec7m l\u00e2m sinh B\u00e0u B\u00e0ng, t\u1ec9nh B\u00ecnh D\u01b0\u01a1ng \u0111\u1ec3 t\u00ecm ra \u0111\u01b0\u1ee3c d\u00f2ng b\u1ea1ch \u0111\u00e0n lai nh\u00e2n t\u1ea1o c\u00f3 tri\u1ec3n v\u1ecdng sinh tr\u01b0\u1edfng nhanh v\u00e0 cho ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 t\u1ed1t nh\u1eb1m m\u1edf r\u1ed9ng di\u1ec7n t\u00edch g\u00e2y tr\u1ed3ng, ph\u1ee5c v\u1ee5 t\u1ed1t cho ng\u00e0nh c\u00f4ng nghi\u1ec7p ch\u1ebf bi\u1ebfn g\u1ed7 \u0111\u1eb7c bi\u1ec7t l\u00e0 cho m\u1ee5c \u0111\u00edch g\u1ed7 x\u1ebb. S\u1ed1 li\u1ec7u thu th\u1eadp v\u1ec1 sinh tr\u01b0\u1edfng 05 d\u00f2ng b\u1ea1ch \u0111\u00e0n lai t\u1ea1i tu\u1ed5i 10 n\u00e0y cho th\u1ea5y kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng nhanh v\u00e0 \u1ed5n \u0111\u1ecbnh trong kho\u1ea3ng t\u1eeb 0,9 \u0111\u1ebfn 1,9cm\/n\u0103m v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 0,35 \u0111\u1ebfn 1,8 m\/n\u0103m v\u1ec1 chi\u1ec1u cao, \u0111\u1ea1t th\u1ec3 t\u00edch t\u1eeb 89 \u0111\u1ebfn 543 dm3<\/sup>\/c\u00e2y. T\u1ef7 tr\u1ecdng g\u1ed7, chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7 t\u0103ng d\u1ea7n t\u1eeb t\u00e2m ra v\u1ecf v\u00e0 m\u1ee9c \u0111\u1ed9 bi\u1ebfn \u0111\u1ed9ng nh\u1ecf (t\u1ef7 tr\u1ecdng g\u1ed7 0,5 \u0111\u1ebfn 0,7 \u1edf g\u1ea7n t\u00e2m, 0,6 \u0111\u1ebfn 0,8 \u1edf g\u1ea7n v\u1ecf; chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7 1,4 \u0111\u1ebfn 1,5mm \u1edf g\u1ea7n t\u00e2m v\u00e0 1,7 \u0111\u1ebfn 1,8 \u1edf g\u1ea7n v\u1ecf). Trong \u0111\u00f3, UE3 v\u00e0 UE24 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn l\u00e0 d\u00f2ng c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng nhanh v\u00e0 ph\u1ea9m ch\u1ea5t g\u1ed7 t\u1ed1t c\u1ea7n \u0111\u01b0\u1ee3c tr\u1ed3ng kh\u1ea3o nghi\u1ec7m m\u1edf r\u1ed9ng v\u00e0 ti\u1ebfp t\u1ee5c theo d\u00f5i, \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng cho m\u1ee5c \u0111\u00edch g\u1ed7 x\u1ebb. Tuy nhi\u00ean, do \u0111\u1ed9 co r\u00fat v\u00e0 gi\u00e3n n\u1edf h\u01a1i cao n\u00ean c\u1ea7n ch\u00fa \u00fd trong qu\u00e1 tr\u00ecnh khai th\u00e1c, b\u1ea3o qu\u1ea3n v\u00e0 ch\u1ebf bi\u1ebfn tr\u00e1nh n\u1ee9t v\u1ee1, cong v\u00eanh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 x\u1ebb.T\u1eeb kh\u00f3a:<\/i> B\u1ea1ch \u0111\u00e0n lai, sinh tr\u01b0\u1edfng, t\u00ednh ch\u1ea5t g\u1ed7, t\u1ef7 tr\u1ecdng g\u1ed7, bi\u1ebfn \u0111\u1ed9ngStudy on fundamental properties of wood of 5 eucalyptus hybrid clones by artificial hybridization planted in Bau Bang, Binh DuongWith the goal to clarify the variation in wood fundamental properties of 5 eucalyptus artificial hybrid clones UE3, UC1, UE4, GU94, UE24 grown in silvicultural experiment station Bau Bang, Binh Duong province to find clones with fast-growing and good quality timber for expanding the planting area. The timber may serves well for the wood processing industry, especially for lumber purposes. Data collected on growing of 5 eucalyptus hybrid clones shows the ability of fast and stable growth in the range of 0.9 to 1.9cm\/year in diameter and 0.35 to 1.8m\/year in height, reaching from 89 to 543dm3<\/sup>\/tree in volume. The wood specific gravity, wood fiber length increases from the pith to the bark with a small variation (specific grvity increased from (0.5 – 0.7) near the pith to (06 – 0,8) near the bark; fiber length increased from (1.4- 1.5) mm near the pith to (1.7- 1.8) near the bark). UE3 and UE24 was the out-standing clones with strong points in both growth and wood specific gravity. They should be expanded in to the other ecologycal region and assessed the quality of wood for the lumber purposes. However, due to great value of total shrinkage and swelling ratio, preservation in logging and processing to avoid cracking, warping should be marked.Keywords:<\/i> Hybrid eucalyptus<\/i>, growth, wood properties, specific gravity, variation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

SINH TR\u01af\u1edeNG V\u00c0 CH\u1ea4T L\u01af\u1ee2NG G\u1ed6 C\u1ee6A C\u00c1C D\u00d2NG KEO LAI V\u00c0 B\u1ea0CH \u0110\u00c0N LAI M\u1edaI CH\u1eccN T\u1ea0O \u1ede VI\u1ec6T NAM<\/b><\/p>\n

Nguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng, \u0110\u1ed7 Th\u1ecb Minh Hi\u1ec3n, Nguy\u1ec5n Minh Ng\u1ecdc
\nVi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc l\u00e2m nghi\u1ec7p<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Lai gi\u1ed1ng c\u00f3 ki\u1ec3m so\u00e1t cho nh\u00f3m lo\u00e0i keo v\u00e0 b\u1ea1ch \u0111\u00e0n \u0111\u00e3 thu \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 th\u00e0nh qu\u1ea3 nh\u1ea5t \u0111\u1ecbnh sau h\u01a1n m\u1ed9t th\u1eadp k\u1ef7 nghi\u00ean c\u1ee9u c\u1ea3i thi\u1ec7n gi\u1ed1ng. V\u1ec1 gi\u1ed1ng keo lai nh\u00e2n t\u1ea1o \u0111\u00e3 t\u1ea1o \u0111\u01b0\u1ee3c nhi\u1ec1u gi\u1ed1ng lai trong \u0111\u00f3 c\u00f3 3 gi\u1ed1ng lai AM2<\/sub>, AM3<\/sub>, MAM8<\/sub> \u0111\u1ea1t \u0111\u01b0\u1ee3c n\u0103ng su\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i cao v\u01b0\u1ee3t c\u00e1c d\u00f2ng keo lai t\u1ef1 nhi\u00ean (BV10, BV33) v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn gi\u1ed1ng qu\u1ed1c gia v\u00e0 gi\u1ed1ng ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt n\u0103m 2008. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch t\u00ednh ch\u1ea5t c\u01a1 l\u00fd g\u1ed7 3 gi\u1ed1ng keo lai nh\u00e2n t\u1ea1o <\/i>AM2<\/sub>, AM3<\/sub>, MAM8<\/sub> \u1edf tu\u1ed5i 7 cho th\u1ea5y so v\u1edbi g\u1ed7 Keo l\u00e1 tr\u00e0m, Keo tai t\u01b0\u1ee3ng v\u00e0 keo lai t\u1ef1 nhi\u00ean, g\u1ed7 keo lai nh\u00e2n t\u1ea1o AM2<\/sub>, AM3<\/sub> c\u00f3 nhi\u1ec1u \u0111\u1eb7c t\u00ednh t\u1ed1t (kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch, s\u1ee9c ch\u1ecbu n\u00e9n d\u1ecdc, s\u1ee9c u\u1ed1n t\u0129nh) h\u01a1n Keo l\u00e1 tr\u00e0m, Keo tai t\u01b0\u1ee3ng v\u00e0 keo lai t\u1ef1 nhi\u00ean. Nh\u01b0 v\u1eady 2 gi\u1ed1ng keo lai nh\u00e2n t\u1ea1o l\u00e0 AM2<\/sub>, AM3<\/sub> l\u00e0 gi\u1ed1ng v\u1eeba c\u00f3 \u01b0u th\u1ebf lai v\u1ec1 sinh tr\u01b0\u1edfng v\u1eeba c\u00f3 \u01b0u th\u1ebf lai v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7. B\u00ean c\u1ea1nh nh\u1eefng th\u00e0nh t\u1ef1u v\u1ec1 keo lai nh\u00e2n t\u1ea1o, c\u00e1c gi\u1ed1ng b\u1ea1ch \u0111\u00e0n lai nh\u00e2n t\u1ea1o c\u0169ng c\u00f3 \u0111\u01b0\u1ee3c 13 gi\u1ed1ng lai c\u00f3 n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn 3 gi\u1ed1ng lai UE24, UE27, UC80 l\u00e0 gi\u1ed1ng Qu\u1ed1c gia v\u00e0 10 gi\u1ed1ng lai UE3, UE23, UE33, UC1,UC2, CU91, UE73, UC75, CU90, UU8 l\u00e0 gi\u1ed1ng ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt, trong \u0111\u00f3 c\u00f3 gi\u1ed1ng lai UE24 v\u1eeba c\u00f3 \u01b0u th\u1ebf lai v\u1ec1 sinh tr\u01b0\u1edfng v\u1eeba c\u00f3 \u01b0u th\u1ebf lai v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng.T\u1eeb kh\u00f3a:<\/i> Keo lai nh\u00e2n t\u1ea1o, c\u01a1 l\u00fd g\u1ed7, b\u1ea1ch \u0111\u00e0n lai, gi\u1ed1ng lai<\/p>\n

Growth and wood properties of new clones of acacia and eucalyptus hybrid<\/b><\/p>\n

Artificial Acacia hybrids have been created, of which 3 hybrids of AM2<\/sub>, AM3<\/sub>, MAM8<\/sub> AM (approved as national varieties and advanced technological varieties in 2008) have high yield and higher than natural Acacia hybrids (BV10, BV33). Assessment of wood properties of these artificial acacia hybrids at age of 7 shows that wood properties of these artificial acacia hybrids (such as specific gravity, length compress resistance, bending strength) are better than that of A. auriculifomis<\/i>, A. mangium<\/i> and natural Acacia hybrid. As a result, two artificial acacia hybrids (AM2<\/sub>, AM3<\/sub>) have preponderance in both growth and wood quality. Apart from artificial acacia hybrids created, artificial Eucalyptus hybrids also have been successful created, of which 3 hybrids (UE24, UE27, UC80) were approved as national varieties, and 10 hybrids (UE3, UE23, UE33, UC1,UC2, CU91, UE73, UC75, CU90, UU8) were approved as advanced technological varieties. Among those approved varieties, the hybrid of UE24 has preponderance in both growth and wood quality.<\/p>\n

Keywords:<\/i> Artificial acacia hybrid, wood properties, Eucalyptus hybrid, hybrid<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M C\u00c2Y \u0110\u1ee8NG V\u00c0 \u0110\u1eb6C T\u00cdNH CH\u1ee6 Y\u1ebeU
\nC\u1ee6A G\u1ed6 LO\u00c0I XOAN NH\u1eea Choerospondias axillaris<\/i> (Roxb.) Burtt & Hill<\/b><\/p>\n

L\u1ea1i Thanh H\u1ea3i1<\/sup>, \u0110\u1ed7 V\u0103n B\u1ea3n2
\n1<\/i><\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh
\n2<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Xoan nh\u1eeb Choerospondias axillaris<\/i> la\u0300 loa\u0300i c\u00e2y ba\u0309n \u0111i\u0323a, co\u0301 ph\u00e2n b\u00f4\u0301 r\u00f4\u0323ng \u1edf r\u1eebng mi\u1ec1n B\u1eafc v\u00e0 mi\u1ec1n Trung c\u1ee7a Vi\u1ec7t Nam, c\u00f3 t\u00f4\u0301c \u0111\u00f4\u0323 t\u0103ng tr\u01b0\u01a1\u0309ng nhanh. Ca\u0301c k\u00ea\u0301t qua\u0309 nghi\u00ean c\u01b0\u0301u cho th\u00e2\u0301y c\u00e2y Xoan nh\u01b0\u0300 co\u0301 th\u00ea\u0309 \u0111\u01b0\u01a1\u0323c x\u00ea\u0301p va\u0300o nho\u0301m g\u00f4\u0303 l\u01a1\u0301n, g\u00f4\u0303 khu\u0301c \u0111a\u0301p \u01b0\u0301ng y\u00eau c\u00e2\u0300u l\u00e0m nguy\u00ean li\u00ea\u0323u sa\u0309n xu\u00e2\u0301t g\u00f4\u0303 xe\u0309 chi\u1ebfm ti\u0309 l\u00ea\u0323 cao (\u0111\u01b0\u01a1\u0300ng ki\u0301nh l\u01a1\u0301n, ch\u1ea5t l\u01b0\u1ee3ng cao). G\u1ed7 \u00edt bi\u0323 n\u00e2\u0301m mu\u0323c n\u00e2u (Daedalea quercina<\/i>), n\u00e2\u0301m mu\u0323c tr\u0103\u0301ng (Trametes corrugate<\/i>) g\u00e2y ha\u0323i, nh\u01b0ng kha\u0309 n\u0103ng kha\u0301ng m\u1ed1i nha\u0300 (Coptotermes formosanus<\/i>) \u01a1\u0309 m\u01b0\u0301c trung bi\u0300nh. G\u1ed7 thu\u1ed9c nh\u00f3m g\u1ed7 \u201cn\u1eb7ng trung b\u00ecnh\u201d; c\u00f3 \u0111\u1ed9 co r\u00fat th\u1ec3 t\u00edch th\u00e2\u0301p v\u00e0 kh\u1ea3 n\u0103ng chi\u0323u ngoa\u0323i l\u1ef1c \u01a1\u0309 m\u01b0\u0301c trung b\u00ecnh. G\u1ed7 Xoan nh\u01b0\u0300 c\u1ea7n a\u0301p du\u0323ng ca\u0301c bi\u00ea\u0323n pha\u0301p x\u1eed l\u00fd b\u1ea3o qu\u1ea3n tr\u01b0\u01a1\u0301c khi s\u01b0\u0309 du\u0323ng va\u0300 kh\u00f4ng n\u00ean s\u01b0\u0309 du\u0323ng cho ca\u0301c c\u00f4ng tri\u0300nh, chi ti\u00ea\u0301t chi\u0323u l\u01b0\u0323c l\u01a1\u0301n.T\u1eeb kh\u00f3a:<\/i> G\u1ed7 Xoan nh\u1eeb Choerospondias axillaris<\/i>, \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean, kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c<\/p>\n

Properties of Choerospondias axillaris<\/i> (roxb.) Burtt & Hill wood and timber<\/b><\/p>\n

The native tree species Choerospondias axillaris <\/i>is distributed widely in Northern and Central of Vietnam, and is known as a fast growing tree. The results of study shown that: Choerospondias axillaris<\/i> could be graded in a big tree group, its round logs are met the saw log requyrements (the big diameter and the high quality of logs). The durability of Choerospondias axillaris<\/i> wood to be good in the environment with Daedalea quercina <\/i>fungi <\/i>and Trametes corrugata<\/i> fungi, but it is easy damaged by Coptotermes formosanus<\/i>. Choerospondias axillaris<\/i> wood is graded in the group of medium density, low rate of volume shrinkage and medium mechanical strength. This timber should be applied preservation solution before utilization and should be not used as a construction parts under strong forces.<\/p>\n

Keywords:<\/i> Choerospondias axillaris<\/i> wood, durability, mechanical strength<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

HI\u1ec6N TR\u1ea0NG M\u1ed8C B\u1ea2N PH\u1eacT GI\u00c1O T\u1ea0I CH\u00d9A B\u1ed4 \u0110\u00c0 V\u00c0 CH\u00d9A V\u0128NH NGHI\u00caM T\u1ec8NH B\u1eaeC GIANG<\/b><\/p>\n

Nguy\u1ec5n Th\u1ecb B\u00edch Ng\u1ecdc1<\/sup>, Ho\u00e0ng Trung Hi\u1ebfu2<\/sup>, L\u00ea Ng\u1ecdc Hoan2
\n1<\/i><\/sup> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ed9c b\u1ea3n kinh Ph\u1eadt l\u00e0 nh\u1eefng b\u1ea3n kh\u1eafc g\u1ed7 c\u00e1c ch\u1eef H\u00e1n, ch\u1eef N\u00f4m \u00e2m b\u1ea3n nh\u1eb1m m\u1ee5c \u0111\u00edch in \u1ea5n, ph\u1ed5 bi\u1ebfn c\u00e1c gi\u00e1o l\u00fd nh\u00e0 Ph\u1eadt ph\u1ee5c v\u1ee5 c\u00f4ng t\u00e1c t\u00f4n gi\u00e1o. \u0110\u00e2y l\u00e0 kho t\u00e0ng v\u00f4 gi\u00e1 c\u1ee7a d\u00e2n t\u1ed9c, ngo\u00e0i gi\u00e1 tr\u1ecb v\u1ec1 Ph\u1eadt gi\u00e1o, c\u00e1c kho 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. Tuy nhi\u00ean ch\u01b0a c\u00f3 c\u00e1c nghi\u00ean c\u1ee9u m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng nh\u1eb1m n\u00e2ng cao hi\u1ec7u qu\u1ea3 l\u01b0u gi\u1eef m\u1ed9c b\u1ea3n t\u1ea1i hai ch\u00f9a. Qua \u0111\u00e1nh gi\u00e1, ph\u1ea7n l\u1edbn m\u1ed9c b\u1ea3n \u0111\u1ec1u \u0111ang c\u00f3 d\u1ea5u hi\u1ec7u xu\u1ed1ng c\u1ea5p do b\u1ecb cong, n\u1ee9t, n\u1ea5m m\u1ed1c v\u00e0 c\u00f4n tr\u00f9ng x\u00e2m h\u1ea1i. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u01b0a ra \u0111\u00e1nh gi\u00e1 t\u1ed5ng quan v\u1ec1 hi\u1ec7n tr\u1ea1ng ngo\u1ea1i quan c\u1ee7a m\u1ed9c b\u1ea3n t\u1ea1i ch\u00f9a V\u0129nh Nghi\u00eam v\u00e0 ch\u00f9a B\u1ed5 \u0110\u00e0 l\u00e0m c\u01a1 s\u1edf cho c\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o qu\u1ea3n m\u1ed9c b\u1ea3n.T\u1eeb kh\u00f3a:<\/i> M\u1ed9c b\u1ea3n, hi\u1ec7n tr\u1ea1ng ngo\u1ea1i quan m\u1ed9c b\u1ea3n<\/p>\n

Current situation of the buddhistical woodblocks in Bo Da pagoda and Vinh Nghiem pagoda in Bac Giang province<\/b><\/p>\n

Buddhistical woodblocks are wooden boards encrypted with Chinese scripts or Vietnamese scripts modified from Chinese scripts (ch\u1eef N\u00f4m) for printing in order to popularize buddhistical philosophy. Wooden blocks are invaluable treasures of Vietnam not only in terms of religious importance but also in the soul and culture reflected in the manuscripts and the artistic values of the encryption works. In Bac Giang, most important woodblocks have been preserved in Vinh Nghiem pagoda and Bo Da pagoda, although there have not been any scientific study on woodblock storages and preservation. Our study illustrated that most of the woodblocks in the two storages have been damaged to certain extent, mostly due to disfiguration, cracking, molding and attacks of insects. This comprehensive evaluation of the current situation of the two woodblock storages can be used in designing appropriate preservation method for the treasures in the future.<\/p>\n

Keywords:<\/i> Woodblock, current situation of woodblocks<\/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 4 – 2015 \u00a01 Nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng hom c\u00e1c gi\u1ed1ng b\u1ea1ch \u0111\u00e0n lai m\u1edbi Nguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng, Nguy\u1ec5n Minh Ng\u1ecdc, Nguy\u1ec5n Th\u1ecb Linh \u0110am Research on cutting propagation of new eucalyptus hybrid 3989 2 Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc x\u1eed l\u00fd h\u1ea1t \u0111\u1ebfn t\u1ef7 […]<\/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\/1481"}],"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=1481"}],"version-history":[{"count":8,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1481\/revisions"}],"predecessor-version":[{"id":1709,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1481\/revisions\/1709"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}