![\"Bia](\"http:\/\/vafs.gov.vn\/en\/wp-content\/uploads\/sites\/3\/2016\/08\/Bia-cat.png\")
<\/a><\/p>\nT\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 2 – 2016<\/p>\n
T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 2 – 2016<\/p>\n<\/a><\/p>\n
| 1<\/td>\n | \n \u1ea2nh h\u01b0\u1edfng c\u1ee7a ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng v\u00e0 lo\u1ea1i hom \u0111\u1ebfn kh\u1ea3 n\u0103ng ra r\u1ec5 c\u1ee7a hom Th\u1ee7y t\u00f9ng (Glyptostrobus pensilis<\/i>)<\/p>\n<\/td>\n | \n Ng\u00f4 V\u0103n C\u1ea7m, Nguy\u1ec5n Nh\u01b0 Hi\u1ebfn, Cao Th\u1ecb L\u00fd, Ph\u1ea1m Ti\u1ebfn B\u1eb1ng, | \n Effects of auxin treatment and cutting type on rooting of Glyptostrobus pensilis<\/i><\/p>\n<\/td>\n | \n 4301<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 2<\/td>\n | \n Nghi\u00ean c\u1ee9u c\u00e1c \u0111\u1eb7c tr\u01b0ng c\u01a1 b\u1ea3n c\u1ee7a ph\u00e2n h\u1eefu c\u01a1 sinh h\u1ecdc \u0111\u01b0\u1ee3c \u1ee7 t\u1eeb ph\u1ebf th\u1ea3i khai th\u00e1c r\u1eebng keo l\u00e0m h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u s\u1ea3n xu\u1ea5t c\u00e2y con \u1edf v\u01b0\u1eddn \u01b0\u01a1m<\/p>\n<\/td>\n | \n Nguy\u1ec5n Th\u1ecb Thu\u00fd Nga, Ph\u1ea1m Quang Thu, | \n Study on the characteristics of organic biofertilizer made from composted scrap materials from Acacia plantations to produce substrates for cultivating seedlings in nursery<\/p>\n<\/td>\n | \n 4308<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 3<\/td>\n | \n \u0110\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac v\u00e0 sinh th\u00e1i lo\u00e0i Th\u00f4ng n\u0103m l\u00e1 (Pinus dalatensis <\/i>de Ferre) t\u1ea1i V\u01b0\u1eddn qu\u1ed1c gia Bidoup N\u00fai B\u00e0 t\u1ec9nh | \n L\u00ea C\u1ea3nh Nam, L\u01b0u Th\u1ebf Trung, B\u00f9i Th\u1ebf Ho\u00e0ng, L\u01b0\u01a1ng V\u0103n D\u0169ng | \n The structural and ecological characteristics of pinus dalatensis de ferre in Bidoup Nui Ba National Park, Lam Dong province<\/p>\n<\/td>\n | \n 4315<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 4<\/td>\n | \n \u0110\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c d\u00f2ng keo lai tr\u1ed3ng t\u1ea1i huy\u1ec7n Xu\u00e2n L\u1ed9c, t\u1ec9nh \u0110\u1ed3ng Nai<\/p>\n<\/td>\n | \n Tr\u00e2\u0300n Quang Ba\u0309o, | \n Growth characteristics of hybrid acacia clones planted at Xuan Loc district, Dong Nai province<\/p>\n<\/td>\n | \n 4326<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 5<\/td>\n | \n B\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 ph\u00f2ng h\u1ed9 c\u1ee7a lo\u00e0i c\u00e2y Ch\u00f2 ch\u1ec9 t\u1ea1i v\u00f9ng ph\u00f2ng h\u1ed9 \u0111\u1ea7u ngu\u1ed3n s\u00f4ng \u0110\u00e0<\/p>\n<\/td>\n | \n Nguy\u1ec5n Th\u1ecb Oanh, | \n Assessment of the possibility of growth and protection of species parashorea (Parashorea chinensis)<\/i> in area watershed protection da river<\/p>\n<\/td>\n | \n 4335<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 6<\/td>\n | \n \u0110\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n Keo l\u00e1 li\u1ec1m (Acacia crassicarpa a.cunn ex benth<\/i>) tr\u00ean v\u00f9ng c\u00e1t ven bi\u1ec3n t\u1ec9nh Qu\u1ea3ng Tr\u1ecb<\/p>\n<\/td>\n | \n \u00a0L\u00ea \u0110\u1ee9c Th\u1eafng, Ng\u00f4 \u0110\u00ecnh Qu\u1ebf, L\u00ea T\u1ea5t Kh\u01b0\u01a1ng, | \n Assessing status and potential of acacia crassicarpa development in sandy area of Quang Tri province coastal zones<\/p>\n<\/td>\n | \n 4343<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 7<\/td>\n | \n X\u00e1c \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 Th\u00e0nh ph\u1ed1 \u0110\u00e0 L\u1ea1t, t\u1ec9nh L\u00e2m \u0110\u1ed3ng giai \u0111o\u1ea1n 1779 – 2007 d\u1ef1a tr\u00ean v\u00f2ng t\u0103ng tr\u01b0\u1edfng c\u1ee7a Du sam (Keteleeria evelyniana<\/i> masters)<\/p>\n<\/td>\n | \n Nguy\u1ec5n V\u0103n Thi\u1ebft<\/p>\n<\/td>\n | \n Tree rings of Keteleeria evelyniana<\/i> based temperature reconstruction for Da Lat city, Lam Dong province<\/p>\n<\/td>\n | \n 4353<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 8<\/td>\n | \n \u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 kinh t\u1ebf, x\u00e3 h\u1ed9i v\u00e0 m\u00f4i tr\u01b0\u1eddng m\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t t\u1ea1i huy\u1ec7n Y\u00ean L\u1eadp, t\u1ec9nh Ph\u00fa Th\u1ecd<\/p>\n<\/td>\n | Nguy\u1ec5n H\u1ea3i H\u00f2a, \nNguy\u1ec5n V\u0103n Phong<\/td>\n | \n Assessing socio – economic and eco – environmental effectiveness of forest production in Yen Lap, Phu Tho province<\/p>\n<\/td>\n | \n 4362<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 9<\/td>\n | \n \u0110\u1eb7c \u0111i\u1ec3m \u0111\u1ea5t tr\u1ed3ng m\u1edbi cho m\u1ed9t s\u1ed1 lo\u00e0i keo cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf 3 v\u00f9ng \u0110\u00f4ng B\u1eafc b\u1ed9, B\u1eafc Trung b\u1ed9 v\u00e0 Nam Trung b\u1ed9<\/p>\n<\/td>\n | \n Ph\u1ea1m \u0110\u00ecnh S\u00e2m, | \n Characteristics of uncultivated land for acacia species supplying large timber in the north east, North Central and South Central Parts of Vietnam<\/p>\n<\/td>\n | \n 4378<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 10<\/td>\n | \n Th\u1ef1c tr\u1ea1ng qu\u1ea3n l\u00fd chi tr\u1ea3 d\u1ecbch v\u1ee5 m\u00f4i tr\u01b0\u1eddng r\u1eebng d\u1ef1a v\u00e0o c\u1ed9ng \u0111\u1ed3ng ng\u01b0\u1eddi d\u00e2n t\u1ed9c m\u01b0\u1eddng v\u00f9ng ph\u00f2ng h\u1ed9 \u0111\u1ea7u ngu\u1ed3n, huy\u1ec7n \u0110\u00e0 B\u1eafc, H\u00f2a B\u00ecnh<\/p>\n<\/td>\n | \n Ho\u00e0ng Li\u00ean S\u01a1n, | \n Status of managing payment service management environment forest based on muong ethnic community in watershed protection, Da Bac dicstrict, Hoa Binh<\/p>\n<\/td>\n | \n 4387<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 11<\/td>\n | \n Nghi\u00ean c\u1ee9u sinh k\u1ebf c\u1ee7a n\u00f4ng h\u1ed9 t\u1ea1i x\u00e3 \u0110\u1eafk Som, huy\u1ec7n \u0110\u1eafk Glong, t\u1ec9nh \u0110\u1eafk N\u00f4ng<\/p>\n<\/td>\n | \n Tuy\u1ebft Hoa Ni\u00ea Kd\u0103m, | \n Study of farmers\u2019 livelihood in dak som commune, Dak Glong district, Dak Nong province<\/p>\n<\/td>\n | \n 4398<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 12<\/td>\n | \n K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u thi\u1ebft k\u1ebf, ch\u1ebf t\u1ea1o m\u00e1y b\u0103m nghi\u1ec1n c\u00e0nh l\u00e1, v\u1ecf c\u00e2y s\u1ea3n xu\u1ea5t compost l\u00e0m gi\u00e1 th\u1ec3 \u01b0\u01a1m c\u00e2y gi\u1ed1ng l\u00e2m nghi\u1ec7p<\/p>\n<\/td>\n | \n L\u00ea Xu\u00e2n Ph\u00fac, T\u00f4 Qu\u1ed1c Huy, Ph\u1ea1m \u0110\u00ecnh M\u1ea1nh, Cao Ch\u00ed C\u00f4ng<\/p>\n<\/td>\n | \n An attempt in design and assembly of equipment for cutting and grinding tree branches leaves and barks in production of composts as nursing medium in forest nurseries<\/p>\n<\/td>\n | \n 4407<\/p>\n<\/td>\n<\/tr>\n | |||||||||||||||||||||
| 13<\/td>\n | \n \u1ea2nh h\u01b0\u1edfng c\u1ee7a x\u1eed l\u00fd ng\u00e2m n\u01b0\u1edbc \u0111\u1ebfn th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a g\u1ed7 G\u00e1o tr\u1eafng (Neolamarckia cadamba<\/i>)<\/p>\n<\/td>\n | \n T\u1ea1 Th\u1ecb Ph\u01b0\u01a1ng Hoa, Nguy\u1ec5n Th\u1ecb Minh Nguy\u1ec7t<\/p>\n<\/td>\n | \n The influence of soaking in water on chemical components, the physical and mechanical properties of Neolamarckia cadamba<\/i><\/p>\n<\/td>\n | \n 4419<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u1ea2NH H\u01af\u1edeNG C\u1ee6A CH\u1ea4T \u0110I\u1ec0U H\u00d2A SINH TR\u01af\u1edeNG V\u00c0 LO\u1ea0I HOM \u0110\u1ebeN KH\u1ea2 N\u0102NG RA R\u1ec4 C\u1ee6A HOM TH\u1ee6Y T\u00d9NG (Glyptostrobus pensilis<\/i>)<\/p>\n Ng\u00f4 V\u0103n C\u1ea7m1<\/sup>, Nguy\u1ec5n Nh\u01b0 Hi\u1ebfn1<\/sup>, Cao Th\u1ecb L\u00fd3<\/sup>, Ph\u1ea1m Ti\u1ebfn B\u1eb1ng1<\/sup>, Th\u1ee7y t\u00f9ng (Glyptostrobus pensilis <\/i>K.Koch) thu\u1ed9c ph\u00e2n h\u1ecd B\u1ee5t m\u1ecdc (Taxondioideae) <\/i>l\u00e0 lo\u00e0i th\u1ef1c v\u1eadt qu\u00fd hi\u1ebfm, c\u00f3 t\u00ean trong S\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam n\u0103m 2007 v\u1edbi c\u1ea5p \u0111\u1ed9 r\u1ea5t nguy c\u1ea5p (CR – Critically Endangered). Do kh\u00f3 t\u00e1i sinh t\u1ef1 nhi\u00ean b\u1eb1ng h\u1ea1t n\u00ean vi\u1ec7c nghi\u00ean c\u1ee9u c\u00e1c k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh Th\u1ee7y t\u00f9ng \u0111\u1ec3 b\u1ea3o t\u1ed3n l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. Th\u1eed nghi\u1ec7m nh\u00e2n gi\u1ed1ng Th\u1ee7y t\u00f9ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i Trung t\u00e2m L\u00e2m nghi\u1ec7p Nhi\u1ec7t \u0111\u1edbi – Gia Lai v\u1edbi c\u00e1c th\u00ed nghi\u1ec7m v\u1ec1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u1ea1i ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng (IBA, NAA) v\u00e0 lo\u1ea1i hom \u0111\u1ebfn kh\u1ea3 n\u0103ng ra r\u1ec5 c\u1ee7a hom Th\u1ee7y t\u00f9ng. K\u1ebft qu\u1ea3 cho th\u1ea5y c\u00e1c ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn kh\u1ea3 n\u0103ng ra r\u1ec5 c\u1ee7a hom Th\u1ee7y t\u00f9ng. T\u1ef7 l\u1ec7 hom Th\u1ee7y t\u00f9ng ra r\u1ec5 cao h\u01a1n khi s\u1eed d\u1ee5ng ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng IBA (37,8 – 66,7%) trong khi t\u1ef7 l\u1ec7 ra r\u1ec5 th\u1ea5p h\u01a1n khi s\u1eed d\u1ee5ng NAA (20,0 – 26,7%), nghi\u1ec7m th\u1ee9c \u0111\u1ed1i ch\u1ee9ng – kh\u00f4ng s\u1eed d\u1ee5ng ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng \u0111\u00e3 kh\u00f4ng ra r\u1ec5. V\u1ec1 lo\u1ea1i hom, t\u1ef7 l\u1ec7 ra r\u1ec5 c\u1ee7a lo\u1ea1i hom n\u1eeda h\u00f3a g\u1ed7 (51,1%) v\u00e0 hom h\u00f3a g\u1ed7 y\u1ebfu (50,0%) l\u00e0 cao h\u01a1n lo\u1ea1i hom \u0111\u00e3 h\u00f3a g\u1ed7 m\u1ea1nh (16,7%). K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u s\u1ebd g\u00f3p ph\u1ea7n trong c\u00f4ng t\u00e1c b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n c\u00e2y Th\u1ee7y t\u00f9ng t\u1ea1i Vi\u1ec7t Nam.<\/p>\n T\u1eeb kh\u00f3a:<\/b> Ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng, lo\u1ea1i hom, Th\u1ee7y t\u00f9ng (Glyptostrobus<\/i> pensilis <\/i>K.Koch).<\/p>\n <\/td>\n<\/tr>\n Effects of auxin treatment and cutting type on rooting of Glyptostrobus<\/i> pensilis<\/i><\/p>\n Glyptostrobus pensilis<\/i> K.Koch (subfamily: Taxodioideae) is critically endangered tree species in Vietnam. This species is of high conservation concern due to their rarity and because of threats to their survival (by environmental change including habitat loss from expanding cultivation, felling and fires, and no natural seedlings were found). Therefore, study on breeding techniques for G. pensilis<\/i> is needed. An experiment was conducted in Tropical Forest Research Centre – Gia Lai province, to assess the effect of various concentrations of IBA and NAA, and cutting types (softwood, semi – hardwood, and hardwood) on rooting percentage. The results showed that IBA with a concentration of 1.000pmm produced the highest rooting percentage (66.7%), 20,0 – 26,7% of rooting percentage was recorded in various NAA concentrations, while no rooted cuttings were found in the control treatment. Concerning cutting types, rooting of softwood and semi – hardwood was significantly higher than hardwood cuttings. The results from this study could potentially be used as basic information on conservation of G. pensilis<\/i> in future.<\/p>\n Keywords: Auxin treatment, cutting type, Glyptostrobus pensilis <\/i>K.Koch.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n NGHI\u00caN C\u1ee8U C\u00c1C \u0110\u1eb6C TR\u01afNG C\u01a0 B\u1ea2N C\u1ee6A PH\u00c2N H\u1eeeU C\u01a0 SINH H\u1eccC \u0110\u01af\u1ee2C \u1ee6 T\u1eea PH\u1ebe TH\u1ea2I KHAI TH\u00c1C R\u1eeaNG KEO L\u00c0M H\u1ed6N H\u1ee2P RU\u1ed8T B\u1ea6U S\u1ea2N XU\u1ea4T C\u00c2Y CON \u1ede V\u01af\u1edcN \u01af\u01a0M<\/p>\n Nguy\u1ec5n Th\u1ecb Thu\u00fd Nga1<\/sup>, Ph\u1ea1m Quang Thu1<\/sup>, Nguy\u1ec5n Minh Ch\u00ed1<\/sup>, S\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u h\u1eefu c\u01a1 ph\u1ebf th\u1ea3i \u1ee7 ph\u00e2n h\u1eefu c\u01a1 sinh h\u1ecdc l\u00e0m h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e2y con \u0111ang \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng kh\u00e1 ph\u1ed5 bi\u1ebfn tr\u00ean th\u1ebf gi\u1edbi. Trong nghi\u00ean c\u1ee9u n\u00e0y, c\u00e1c v\u1eadt li\u1ec7u h\u1eefu c\u01a1 s\u1eb5n c\u00f3 nh\u01b0 l\u00e1, v\u1ecf c\u00e2y keo, thu \u0111\u01b0\u1ee3c sau khai th\u00e1c r\u1eebng keo s\u1eed d\u1ee5ng \u1ee7 ph\u00e2n h\u1eefu c\u01a1 sinh h\u1ecdc l\u00e0m gi\u00e1 th\u1ec3 \u0111\u00f3ng b\u1ea7u \u01b0\u01a1m c\u00e2y con. Sau 90 – 105 ng\u00e0y \u1ee7, t\u00ednh ch\u1ea5t \u0111\u1eb7c tr\u01b0ng c\u1ee7a ph\u00e2n h\u1eefu c\u01a1 sinh h\u1ecdc \u0111\u01b0\u1ee3c \u1ee7 t\u1eeb v\u1ecf v\u00e0 l\u00e1 c\u00e2y keo sau khai th\u00e1c v\u1edbi vi sinh v\u1eadt ph\u00e2n gi\u1ea3i xenlulo, c\u00f3 \u0111\u1ed9 \u1ea9m: 25 – 35%; pH: 6,2 – 6,8; h\u00e0m l\u01b0\u1ee3ng c\u00e1c ch\u1ea5t h\u1eefu c\u01a1 t\u1ed5ng s\u1ed1: 32 – 32,5%; H\u00e0m l\u01b0\u1ee3ng nit\u01a1 t\u1ed5ng s\u1ed1: 0,19 – 2,5%; h\u00e0m l\u01b0\u1ee3ng photpho t\u1ed5ng s\u1ed1: 0,25%; h\u00e0m l\u01b0\u1ee3ng kalit\u1ed5ng s\u1ed1; 0,21 – 0,25%; m\u00e0u s\u1eafc: n\u00e2u \u0111en. Ph\u00e2n h\u1eefu c\u01a1 sinh h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee7 hoai, m\u1ee5c trong kho\u1ea3ng th\u1eddi gian t\u1eeb 90 – 105 ng\u00e0y. S\u1eed d\u1ee5ng 30% ph\u00e2n h\u1eefu c\u01a1 sinh h\u1ecdc tr\u1ed9n v\u1edbi 69% \u0111\u1ea5t t\u1ea7ng m\u1eb7t v\u00e0 1% l\u00e2n (CT3) \u01b0\u01a1m c\u00e2y gi\u1ed1ng Keo tai t\u01b0\u1ee3ng t\u0103ng \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c 26,4% v\u00e0 t\u0103ng chi\u1ec1u cao 148% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng \u1edf th\u1eddi \u0111i\u1ec3m 90 ng\u00e0y tu\u1ed5i. C\u00e2y con S\u01b0a \u0111\u1ecf khi s\u1eed d\u1ee5ng 40% ph\u00e2n h\u1eefu c\u01a1 sinh h\u1ecdc tr\u1ed9n v\u1edbi 59% \u0111\u1ea5t t\u1ea7ng m\u1eb7t v\u00e0 1% l\u00e2n (CT4) sau 90 ng\u00e0y th\u00ed nghi\u1ec7m t\u0103ng \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c 14,8%, t\u0103ng chi\u1ec1u cao v\u00fat ng\u1ecdn 29,4% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng.<\/p>\n T\u1eeb kho\u00e1<\/i>: Acacia mangium<\/i>, Dalbergia tonkinensis<\/i>, Keo tai t\u01b0\u1ee3ng, ph\u00e2n h\u1eefu c\u01a1 sinh h\u1ecdc, S\u01b0a \u0111\u1ecf.<\/td>\n<\/tr>\n The use of organic biofertilizer made from tree harvesting residuals (leaves, branches and bark) inoculated with cenllulose decomposition microorganisms as the nursury potting medium for seedlings production has been popular in the world. In this study, one ton of chips of residuals from harvested acacia plantations including leaves, branches and bark were added with 3kg potassium, 10kg super phosphat, 5kg urea, inoculated with 5kg of subtrates of cenllulose decomposition microorganisms to produce organic fertilizer to use as potting medium for seedling production in the nursery. After 90 – 105 days of inoculation, the compost has humidity of 25 – 35%, pHH2O<\/sub> of 6.2 – 6.8, total organic matter of 32 – 32.5%, total nitrogen content of 1.9 – 2.5%, total phosphorus content of 0.25%, total potassium content of 0.21 – 0.25%, and the color of black brown. The highest nutrient contents was found in the biofertilizer composted in the period from 90 to 105 days. The mixture of 30% biofertilizer, 69% topsoil and 1% phosphate fertilizer (CT3) showed the best growth rate of 90 old – day Acacia mangium<\/i> seedlings, which has 26.4% in stem diameter and 148% in height higher than those of the control. This mixture was 40% organic biofertilizer, 59% topsoil and 1% phosphate fertilizer (CT4) for Dalbergia tonkinensis<\/i> seedlings, which has 14.8% in stem diameter and 14.8% in height higher than those of the control.<\/p>\n Keywords: Acacia mangium, Dalbergia tonkinensis,<\/i> Organic biofertilizer.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u00a0<\/b><\/p>\n \u0110\u1eb6C \u0110I\u1ec2M C\u00c2\u0301U TRU\u0301C V\u00c0 SINH TH\u00c1I LO\u00c0I TH\u00d4NG N\u0102M L\u00c1 (<\/b>Pinus dalatensis <\/i>de Ferre) T\u1ea0I V\u01af\u1edcN QU\u1ed0C GIA BIDOUP N\u00daI B\u00c0 T\u1ec8NH L\u00c2M \u0110\u1ed2NG<\/b><\/p>\n L\u00ea C\u1ea3nh Nam1<\/sup>, L\u01b0u Th\u1ebf Trung1<\/sup>,<\/b><\/p>\n B\u00f9i Th\u1ebf Ho\u00e0ng2<\/sup>, L\u01b0\u01a1ng V\u0103n D\u0169ng3<\/sup> v\u00e0 Ph\u1ea1m Xu\u00e2n Nguy\u00ean2<\/sup><\/b><\/p>\n 1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y nguy\u00ean<\/p>\n 2 <\/sup>V\u01b0\u1eddn Qu\u1ed1c gia Bidoup N\u00fai B\u00e0<\/p>\n 3<\/sup>Khoa Sinh h\u1ecdc \u2013 Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc \u0110\u00e0 L\u1ea1t<\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n Th\u00f4ng n\u0103m l\u00e1 (Pinus dalatensie <\/i>de Ferre) \u0111\u01b0\u1ee3c nh\u00e0 th\u1ef1c v\u1eadt h\u1ecdc ng\u01b0\u1eddi Ph\u00e1p t\u00ean Y. de Ferre m\u00f4 t\u1ea3 v\u00e0 c\u00f4ng b\u1ed1 l\u1ea7n \u0111\u1ea7u ti\u00ean v\u00e0o n\u0103m 1960 tr\u00ean c\u01a1 s\u1edf c\u00e1c m\u1eabu v\u1eadt thu \u0111\u01b0\u1ee3c \u1edf Tr\u1ea1i M\u00e1t (Tp. \u0110\u00e0 L\u1ea1t) v\u00e0 t\u1eeb tr\u1ea1m Ch\u01b0 Yang Sin (\u0110\u0103k L\u0103k). Th\u00f4ng n\u0103m l\u00e1 l\u00e0 lo\u00e0i \u0111\u1eb7c h\u1eefu c\u1ee7a Vi\u1ec7t Nam v\u00e0 c\u00f3 ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean t\u1eadp trung \u1edf Cao nguy\u00ean Langbian, Cao nguy\u00ean Ng\u1ecdc Linh, Cao nguy\u00ean Pl\u00e2yku v\u00e0 \u1edf Th\u1eeba L\u01b0u \u2013 Hu\u1ebf. Trong v\u00f9ng ph\u00e2n b\u1ed1, Th\u00f4ng n\u0103m l\u00e1 c\u00f3 ph\u00e2n b\u1ed1 trong ki\u1ec3u r\u1eebng h\u1ed7n giao c\u00e2y l\u00e1 r\u1ed9ng v\u00e0 l\u00e1 kim, \u1edf \u0111\u1ed9 cao t\u1eeb 1400m \u2013 1900m so v\u1edbi m\u1eb7t n\u01b0\u1edbc bi\u1ec3n. Th\u00f4ng n\u0103m l\u00e1 c\u00f3 ph\u00e2n b\u1ed1 c\u1ee5m \u1edf \u0111\u1ec9nh \u0111\u1ed3i v\u00e0 r\u1ea3i r\u00e1c \u1edf s\u01b0\u1eddn v\u00e0 ch\u00e2n \u0111\u1ed3i. Th\u00f4ng n\u0103m l\u00e1 m\u1ecdc h\u1ed7n giao v\u1edbi c\u00e1c lo\u00e0i c\u00e2y B\u1ea1ch t\u00f9ng, H\u1ed3ng t\u00f9ng, P\u01a1 mu, Th\u00f4ng tre, Th\u00f4ng 2 l\u00e1 d\u1eb9t v\u00e0 c\u00e1c lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng kh\u00e1c thu\u1ed9c h\u1ecd D\u1ebb, Long n\u00e3o v\u1edbi t\u1ea7ng th\u1ea3m m\u1ee5c d\u00e0y (>20cm). Trong v\u00f9ng ph\u00e2n b\u1ed1 t\u00e2\u0323p trung c\u1ee7a lo\u00e0i t\u1ea1i V\u01b0\u1eddn Qu\u1ed1c gia Bidoup N\u00fai b\u00e0 t\u1ec9nh L\u00e2m \u0110\u1ed3ng, c\u00e1c tuy\u1ebfn \u0111i\u1ec1u tra \u0111\u01b0\u01a1\u0323c thi\u00ea\u0301t l\u1eadp v\u01a1\u0301i c\u01b0\u0323 ly tuy\u1ebfn c\u00e1ch tuy\u1ebfn 200m. Tr\u00ean m\u1ed7i tuy\u1ebfn, ca\u0301c \u00f4 ti\u00eau chu\u00e2\u0309n t\u1ea1m th\u1eddi 2500m2<\/sup> \u0111\u01b0\u01a1\u0323c thi\u00ea\u0301t l\u00e2\u0323p v\u01a1\u0301i c\u01b0\u0323 ly ca\u0301ch nhau 100m. T\u00f4\u0309ng s\u00f4\u0301 40 \u00f4 ti\u00eau chu\u00e2\u0309n 2500m2<\/sup> \u0111a\u0303 \u0111i\u00ea\u0300u tra. K\u1ebft qu\u1ea3 cho th\u1ea5y, m\u1eadt \u0111\u1ed9 trung b\u00ecnh c\u1ee7a l\u00e2m ph\u1ea7n c\u00f3 lo\u00e0i Th\u00f4ng n\u0103m l\u00e1 ph\u00e2n b\u1ed1 l\u00e0 853 c\u00e2y\/ha (D1.3<\/sub> \u00b310cm), chi\u1ec1u cao trung b\u00ecnh Hvntb<\/sub> =17,2m v\u00e0 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c b\u00ecnh qu\u00e2n D1.3<\/sub> = 23,6cm. C\u00e1c l\u00e2m ph\u1ea7n c\u00f3 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a Th\u00f4ng n\u0103m l\u00e1 r\u1ea5t \u0111a d\u1ea1ng v\u1ec1 th\u00e0nh ph\u1ea7n lo\u00e0i v\u1edbi kho\u1ea3ng 100 lo\u00e0i xu\u1ea5t hi\u1ec7n thu\u1ed9c 62 chi v\u00e0 35 h\u1ecd th\u1ef1c v\u1eadt th\u00e2n g\u1ed7. S\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 Th\u00f4ng n\u0103m l\u00e1 trong l\u00e2m ph\u1ea7n th\u01b0\u1eddng th\u1ea5p, m\u1eadt \u0111\u1ed9 trung b\u00ecnh l\u00e0 19c\u00e2y\/ha, \u0111a ph\u1ea7n \u1edf tr\u1ea1ng th\u00e1i th\u00e0nh th\u1ee5c v\u00e0 qu\u00e1 th\u00e0nh th\u1ee5c v\u1edbi \u0111\u1eb7c tr\u01b0ng \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh v\u00e0 chi\u1ec1u cao v\u00fat ng\u1ecdn trung b\u00ecnh l\u1edbn, t\u01b0\u01a1ng \u1ee9ng l\u00e0 D1.3tb<\/sub> = 54,8cm v\u00e0 Hvntb <\/sub>= 24,6m. Th\u00f4ng n\u0103m l\u00e1 l\u00e0 1 trong 10 lo\u00e0i \u01b0u th\u1ebf trong sinh th\u00e1i qu\u1ea7n th\u1ec3 v\u1edbi chi\u0309 s\u00f4\u0301 quan tro\u0323ng loa\u0300i IV% = 5,0%. Th\u00f4ng n\u0103m l\u00e1 c\u00f3 quan h\u1ec7 t\u01b0\u01a1ng h\u1ed7 v\u1edbi Th\u00f4ng 2 l\u00e1 d\u1eb9t, (Pinus krempfii), <\/i>C\u00f4m cu\u1ed1ng d\u00e0i (Elaeocarpus lanceifolius <\/i>Roxb.) v\u00e0 c\u00f3 quan h\u1ec7 ng\u1eabu nhi\u00ean v\u1edbi c\u00e1c lo\u00e0i C\u00e1p m\u1ed9c Bidoup (Craibiodendron heryi <\/i>W.W.Smith var bidoupensis <\/i>Smith&Phamh), Tr\u00e2m \u0111\u1ecf (Syzygium zeylanicum <\/i>(L.) DC), Tr\u00e2m tr\u1eafng (Syzygium wightianum <\/i>Wall. ex Wight et Arn), C\u00e1p m\u1ed9c VN (Craibiodendron vietnamense <\/i>Judd), Kha th\u1ee5 nh\u00edm (Castanopsis echidnocarpa <\/i>Miq).<\/p>\n T\u1eeb kh\u00f3a:<\/b> C\u00e2y l\u00e1 kim, lo\u00e0i \u0111\u1eb7c h\u1eefu, Th\u00f4ng \u0111\u00e0 l\u1ea1t.<\/i><\/p>\n THE STRUCTURAL AND ECOLOGICAL CHARACTERISTICS OF Pinus dalatensis<\/i> de Ferre IN BIDOUP NUI BA NATIONAL PARK, LAM DONG PROVINCE<\/b><\/p>\n The Vietnamese endemic five-needles pine Pinus dalatensi<\/i>s de Ferre grows naturally in Langbian plateau. Data collected from 40 sample plots (2500m2<\/sup> each) showed that, in the distribution area, Pinus dalatensi<\/i>s is founded in mixed broad\u2013leaved and coniferous forests, with stand structure characterized by the average density of 853 trees per hecta, average stand height of 17.2m and average diameter at breast height of 23.6cm. The stand tree diverssity is high, with 100 species, 62 genus that belong to 35 families.<\/p>\n In the stand where Pinus dalatensi<\/i>s naturally grow, the soil pHKCl<\/sub>, nitrogen, P2<\/sub>O5<\/sub>, and K2<\/sub>O ranges from 4.9 \u2013 5.3, 0.138 \u2013 0.441%, 0.013 \u2013 0.415% and 0.013 \u2013 0.051, respectively<\/p>\n The number of individual of Pinus dalatensi<\/i>s is low, with average of 19 trees\/ha, average diameter and heigh are 54,8cm and 24.6m, respecitvely. It is clear that all individuals are matured or over matured.<\/p>\n Pinus dalatensi<\/i>s emerges as one of 8 ecological dominant species in stand, with IV%= 5,0%. The appearance of Pinus dalatensi<\/i>s is in positive relationship with the appearance of Pinus krempfii<\/i>, and Elaeocarpus lanceifolius<\/i> and in consistent random relationship with Craibiodendron heryi<\/i>, Syzygium zeylanicum<\/i>, Syzygium wightianum<\/i>, Craibiodendron vietnamense<\/i>, Castanopsis echidnocarpa<\/i>, Elaeocarpus lanceifolius.<\/i><\/p>\n Keywords: Conifer, endemic species, Dalat pine.<\/p>\n <\/p>\n \u0110\u1eb6C \u0110I\u1ec2M SINH TR\u01af\u1edeNG C\u1ee6A C\u00c1C D\u00d2NG KEO LAI TR\u1ed2NG TA\u0323I HUY\u00ca\u0323N XU\u00c2N L\u1ed8C, TI\u0309NH \u0110\u1ed2NG NAI<\/p>\n Tr\u00e2\u0300n Quang Ba\u0309o1<\/sup>, H\u00f4\u0300 Thi\u0323 Hu\u00ea\u03232 Keo lai l\u00e0 lo\u00e0i c\u00e2y m\u1ecdc nhanh, c\u00f3 nhi\u1ec1u \u01b0u th\u1ebf nh\u01b0 kh\u1ea3 n\u0103ng th\u00edch nghi cao, sinh tr\u01b0\u1edfng nhanh v\u00e0 c\u1ea3i t\u1ea1o \u0111\u1ea5t t\u1ed1t. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng c\u1ee7a 6 d\u00f2ng keo lai g\u1ed3m AH1, AH7, BV32, BV33, KL2, KL20 v\u00e0 keo lai d\u00f2ng BV32, BV33 tr\u1ed3ng theo ba c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 1660 c\u00e2y\/ha, 2220 c\u00e2y\/ha, 3330 c\u00e2y\/ha tr\u1ed3ng n\u0103m 2011 t\u1ea1i huy\u00ea\u0323n Xu\u00e2n L\u1ed9c, ti\u0309nh \u0110\u00f4\u0300ng Nai cho th\u1ea5y: n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng c\u00e1c d\u00f2ng keo lai \u0111\u1ea1t t\u1eeb 30 m3<\/sup>\/ha\/n\u0103m \u0111\u1ebfn 34,6 m3<\/sup>\/ha\/n\u0103m, c\u1ee5 th\u1ec3 d\u00f2ng BV32 \u0111\u1ea1t 31,7 m3<\/sup>\/ha\/n\u0103m, BV33 \u0111\u1ea1t 30,0 m3<\/sup>\/ha\/n\u0103m, AH1 \u0111\u1ea1t 34,6 m3<\/sup>\/ha\/n\u0103m, AH7 \u0111\u1ea1t 31,3 m3<\/sup>\/ha\/n\u0103m, KL2 \u0111\u1ea1t 30,2 m3<\/sup>\/ha\/n\u0103m, KL20 \u0111\u1ea1t 32,3 m3<\/sup>\/ha\/n\u0103m. T\u1eeb k\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 v\u1ec1 ch\u1ec9 ti\u00eau \u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u cao, n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng c\u00e1c d\u00f2ng keo lai, ph\u1ea9m ch\u1ea5t th\u00e2n c\u00e2y v\u00e0 k\u1ebft h\u1ee3p so s\u00e1nh v\u1edbi c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a c\u00e1c t\u00e1c gi\u1ea3 cho th\u1ea5y, t\u1ea1i Xu\u00e2n L\u1ed9c d\u00f2ng keo lai AH1 v\u00e0 AH7 l\u00e0 hai d\u00f2ng v\u1eeba \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch s\u1ea3n xu\u1ea5t kinh doanh g\u1ed7 x\u1ebb v\u1eeba \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch s\u1ea3n xu\u1ea5t kinh doanh g\u1ed7 nguy\u00ean li\u1ec7u.<\/p>\n N\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng keo lai d\u00f2ng BV32, BV33 theo ba c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 kh\u00f4ng c\u00f3 s\u1ef1 ch\u00eanh l\u1ec7ch \u0111\u00e1ng k\u1ec3, c\u1ee5 th\u1ec3 nh\u01b0 sau: c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 1.660 c\u00e2y\/ha v\u00e0 2.220 c\u00e2y\/ha \u0111\u1ea1t 31,9 m3<\/sup>\/ha\/n\u0103m, c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 3.330 c\u00e2y\/ha \u0111\u1ea1t 32,1 m3<\/sup>\/ha\/n\u0103m. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 1.660 c\u00e2y\/ha l\u00e0 t\u1ed1t nh\u1ea5t ta\u0323i Xu\u00e2n L\u00f4\u0323c.<\/p>\n T\u01b0\u0300 kho\u0301a:<\/i><\/b> <\/b>R\u01b0\u0300ng tr\u00f4\u0300ng, keo lai, do\u0300ng keo, \u0111\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u01a1\u0309ng<\/td>\n<\/tr>\n Acacia hybrid is a fast growing species, it has many advantages of high adaptability, fast growth and good soil improvement. Growth characteristics of acacia hybrid clones, including AH1, AH7, BV32, BV33, KL2, KL20 and BV32, BV33, planted in 2011 at Xuan Loc district, Dong Nai province with three plant density treatments 1660 trees\/ha and 2220 trees\/ha, 3330 trees\/ha planted. Results showed that productivity of acacia clones are ranging from 30 m3<\/sup>\/ha\/year to 34.6 m3<\/sup>\/ha\/year. Specifically, BV32 clone is 31.7 m3<\/sup>\/ha\/year, BV33 clone is 30 m3<\/sup>\/ha\/year, AH1 clone is 34.6 m3<\/sup>\/ha\/year, AH7 clone is 31.3 m3<\/sup>\/ha\/year, KL2 clone is 30.2 m3<\/sup>\/ha\/year and KL20 clone is 32.3 m3<\/sup>\/ha\/year. From the results of the evaluation of the diameter, height, productivities of acacia hybrid clones, trunk quality and referring to other related researches. The study recommends that acacia hybrid clones of AH1 and AH7 are suitable to plant at Xuan Loc district, these clones meet business production purposes of both sawn timber and wood materials.<\/p>\n Productivities of acacia hybrid clones BV32, BV33 planted with three density treatments has no significant differences, as follows: the treatments of 1660 trees\/ha and 2220 trees\/ha reached 31.9 m3<\/sup>\/ha\/years, and the treatment of 3330 trees\/ha reached 32.1 m3<\/sup>\/ha\/year. As results the density treatment of 1660 trees\/ha is the best at Xuan Loc district.<\/p>\n Keywords:<\/i><\/b> <\/b>Plantation forest, acacia hybrid, acacia clones, growth characteristics<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n B\u01af\u1edaC \u0110\u1ea6U \u0110\u00c1NH GI\u00c1 KH\u1ea2 N\u0102NG SINH TR\u01af\u1edeNG V\u00c0 PH\u00d2NG H\u1ed8 C\u1ee6A LO\u00c0I C\u00c2Y CH\u00d2 CH\u1ec8 T\u1ea0I V\u00d9NG PH\u00d2NG H\u1ed8 \u0110\u1ea6U NGU\u1ed2N S\u00d4NG \u0110\u00c0<\/p>\n Nguy\u1ec5n Th\u1ecb Oanh, K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 ph\u00f2ng h\u1ed9 c\u1ee7a lo\u00e0i c\u00e2y Ch\u00f2 ch\u1ec9 (Parashorea chinensis<\/i>) t\u1ea1i v\u00f9ng \u0111\u1ea7u ngu\u1ed3n s\u00f4ng \u0110\u00e0 t\u1ec9nh H\u00f2a B\u00ecnh cho th\u1ea5y, sau 10 n\u0103m tr\u1ed3ng lo\u00e0i c\u00e2y Ch\u00f2 ch\u1ec9 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c \u0111\u1ea1t 7,43cm, t\u0103ng tr\u01b0\u1edfng 0,57 cm\/n\u0103m; chi\u1ec1u cao v\u00fat ng\u1ecdn trung b\u00ecnh \u0111\u1ea1t 12,37m, t\u0103ng tr\u01b0\u1edfng 1,09 m\/n\u0103m; \u0111\u01b0\u1eddng k\u00ednh t\u00e1n trung b\u00ecnh \u0111\u1ea1t 6,65m, t\u0103ng tr\u01b0\u1edfng 0,51 m\/n\u0103m. \u0110\u1ea5t r\u1eebng trong m\u00f4 h\u00ecnh tr\u1ed3ng lo\u00e0i Ch\u00f2 ch\u1ec9 c\u00f3 ph\u1ea3n \u1ee9ng chua m\u1ea1nh, h\u00e0m l\u01b0\u1ee3ng M\u00f9n \u1edf m\u1ee9c trung b\u00ecnh, h\u00e0m l\u01b0\u1ee3ng Nts \u1edf m\u1ee9c kh\u00e1, h\u00e0m l\u01b0\u1ee3ng P d\u1ec5 ti\u00eau v\u00e0 K d\u1ec5 ti\u00eau \u1edf m\u1ee9c r\u1ea5t ngh\u00e8o. L\u01b0\u1ee3ng r\u01a1i r\u1ee5ng m\u1ed7i n\u0103m thu \u0111\u01b0\u1ee3c t\u1ea1i m\u00f4 h\u00ecnh tr\u1ed3ng Ch\u00f2 ch\u1ec9 \u0111\u1ea1t 6,0 t\u1ea5n\/ha (g\u1ea5p 1,5 l\u1ea7n so v\u1edbi n\u01a1i kh\u00f4ng tr\u1ed3ng Ch\u00f2 ch\u1ec9). Lo\u00e0i Ch\u00f2 ch\u1ec9 \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 v\u1ec1 m\u1eb7t m\u00f4i tr\u01b0\u1eddng (ph\u00f2ng h\u1ed9) th\u00f4ng qua kh\u1ea3 n\u0103ng h\u1ea1n ch\u1ebf x\u00f3i m\u00f2n v\u00e0 d\u00f2ng ch\u1ea3y b\u1ec1 m\u1eb7t, h\u1ea1n ch\u1ebf l\u01b0\u1ee3ng dinh d\u01b0\u1ee1ng b\u1ecb m\u1ea5t theo c\u00e1c d\u00f2ng ch\u1ea3y b\u1ec1 m\u1eb7t. L\u01b0\u1ee3ng x\u00f3i m\u00f2n trong m\u00f4 h\u00ecnh tr\u1ed3ng Ch\u00f2 ch\u1ec9 l\u00e0 2,11 t\u1ea5n\/ha\/n\u0103m (ch\u1ec9 b\u1eb1ng 60,5% so v\u01a1\u0301i \u0111\u1ed1i ch\u1ee9ng), l\u01b0\u1ee3ng d\u00f2ng ch\u1ea3y b\u1ec1 m\u1eb7t l\u00e0 154,500m3<\/sup>\/ha\/n\u0103m (ch\u1ec9 b\u1eb1ng 61,9% \u0111\u1ed1i ch\u1ee9ng). L\u01b0\u1ee3ng dinh d\u01b0\u1ee1ng b\u1ecb m\u1ea5t h\u00e0ng n\u0103m \u1edf m\u1ee9c th\u1ea5p v\u00e0 th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (N m\u1ea5t 4,64kg\/ha\/n\u0103m b\u1eb1ng 20,7% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng; P m\u1ea5t 6,18 kg\/ha\/n\u0103m b\u1eb1ng 19,1% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng, K m\u1ea5t 5,72 kg\/ha\/n\u0103m b\u1eb1ng 28,0 % so v\u1edbi \u0111\u1ed1i ch\u1ee9ng.<\/p>\n T\u1eeb kh\u00f3a:<\/i><\/b> <\/b>Ch\u00f2 ch\u1ec9, ph\u00f2ng h\u1ed9, sinh tr\u01b0\u01a1\u0309ng, s\u00f4ng \u0110\u00e0<\/td>\n<\/tr>\n Da river watershed is a important protection areas in the northern mountainous region of our country. Surrounding area Hoa Binh hydropower reservoir mostly forest and forest land with high slopes, have more forest cover but low quality protection, mostly poor secondary forest, with tree species have low protection value. The results of the paper refers to the adaptability and protection of species Parashorea (Parashorea chinensis)<\/i> in the Da river watershed. The study results showed that , after 10 years of planting trees for only average Dbh from 7.7 to 12.0 cm, growth from 0.96 to 1.03 cm\/year; The average tree height from 11.3 to 12.0m , growth from 0.59 to 0.65 m\/year; The average canopy diameter reached 4.5 to 5.4m , growth from 0.29 to 0.38 m\/year). Rate of good quality plants reached 86.6%, averaging 10% and 3,33% bad tree. Forest land under the impact of Parashorea specie, relatively sour, the humus content medium, Nts fairly. K dt, Pdt content in very poverty. The falling amount each year in obtained was 6.0 tones\/ha (1.5 times compared to the control). The Parashorea model brings environmental efficiency, manifested in the ability to limit erosion and runoff, nutrient restriction lost under the surface flow. The amount of erosion was 2.11 tonnes\/ha\/year (reached 60,5% DC), the amount of runoff is 154.500 m3<\/sup>\/ha\/year (reached 61.85% DC). Nutrients are lost annually in low and much lower than the controls (N lost 4.64 kg\/ha\/year by 20.7% compared to controls; P lost 6.18 kg\/ha\/year in 19.1% compared with the control. The amout of K lost 5.72 kg\/ha\/year by 28.0% compared to controls.<\/p>\n Keywords:<\/i><\/b> Parashorea, protection, Da river<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u0110\u00c1NH GI\u00c1 TH\u1ef0C TR\u1ea0NG V\u00c0 TI\u1ec0M N\u0102NG PH\u00c1T TRI\u1ec2N KEO L\u00c1 LI\u1ec0M (Acacia crassicarpa<\/i> A.Cunn ex Benth) TR\u00caN V\u00d9NG C\u00c1T VEN BI\u1ec2N T\u1ec8NH QU\u1ea2NG TR\u1eca<\/p>\n L\u00ea \u0110\u1ee9c Th\u1eafng1, 3<\/sup>, Ng\u00f4 \u0110\u00ecnh Qu\u1ebf2<\/sup>, L\u00ea T\u1ea5t Kh\u01b0\u01a1ng1<\/sup>, V\u00f9ng c\u00e1t ven bi\u1ec3n t\u1ec9nh Qu\u1ea3ng Tr\u1ecb c\u00f3 kho\u1ea3ng 34.152ha, chi\u1ebfm 7,2% t\u1ed5ng di\u1ec7n t\u00edch t\u1ef1 nhi\u00ean, trong \u0111\u00f3 c\u1ed3n c\u00e1t tr\u1eafng v\u00e0ng, b\u00e3i c\u00e1t (Cc) c\u00f3 21.089ha, chi\u1ebfm 61,8%; \u0111\u1ea5t c\u00e1t bi\u1ec3n (C) c\u00f3 10.410ha, chi\u1ebfm 30,5%; c\u1ed3n c\u00e1t v\u00e0ng (Cv) c\u00f3 2.647ha, chi\u1ebfm 7,8% v\u00e0 b\u00e3i c\u00e1t ven s\u00f4ng (Cb) c\u00f3 5,4ha, chi\u1ebfm 0,02% t\u1ed5ng di\u1ec7n t\u00edch b\u00e3i c\u00e1t, c\u1ed3n c\u00e1t v\u00e0 \u0111\u1ea5t c\u00e1t bi\u1ec3n. V\u00f9ng c\u00e1t n\u1eb1m tr\u00ean \u0111\u1ecba b\u00e0n 25 x\u00e3 d\u1ecdc ven bi\u1ec3n thu\u1ed9c 4 huy\u1ec7n V\u0129nh Linh, Do Linh, Tri\u1ec7u Phong v\u00e0 H\u1ea3i L\u0103ng. Di\u1ec7n t\u00edch \u0111\u1ea5t c\u00e1t hoang h\u00f3a ch\u01b0a s\u1eed d\u1ee5ng c\u00f2n kh\u00e1 l\u1edbn, chi\u1ebfm 29,3% (10.020ha) t\u1ed5ng di\u1ec7n t\u00edch \u0111\u1ea5t c\u00e1t ven bi\u1ec3n c\u1ee7a t\u1ec9nh. Di\u1ec7n t\u00edch r\u1eebng ch\u1eafn gi\u00f3 ch\u1eafn c\u00e1t ven bi\u1ec3n c\u00f3 kho\u1ea3ng 16.428ha, ch\u1ee7 y\u1ebfu tr\u1ed3ng Keo l\u00e1 tr\u00e0m v\u00e0 Phi lao tr\u00ean l\u1eadp \u0111\u1ecba c\u00e1t tr\u1eafng, c\u00e1t di \u0111\u1ed9ng n\u00ean c\u00e2y tr\u1ed3ng sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n k\u00e9m, kh\u1ea3 n\u0103ng ph\u00f2ng h\u1ed9 th\u1ea5p. \u1ede v\u00f9ng c\u00e1t n\u1ed9i \u0111\u1ed3ng Keo l\u00e1 li\u1ec1m \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o th\u1eed nghi\u1ec7m t\u1eeb n\u0103m 2000, \u0111\u1ebfn nay \u0111\u00e3 tr\u1ed3ng \u0111\u01b0\u1ee3c 23ha, trong \u0111\u00f3 17ha \u1edf Tri\u1ec7u Phong v\u00e0 6ha \u1edf Gio Linh. C\u00e2y Keo l\u00e1 li\u1ec1m sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n t\u1ed1t, t\u1ef7 l\u1ec7 s\u1ed1ng sau 27 th\u00e1ng tu\u1ed5i \u0111\u1ea1t tr\u00ean 90,0%. Chi\u1ec1u cao c\u00e2y v\u00e0 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c c\u00f3 t\u01b0\u01a1ng quan ch\u1eb7t, th\u00f4ng qua ph\u01b0\u01a1ng tr\u00ecnh: Hvn<\/sub> = 0,109 + 0,365*Dgoc<\/i><\/b> (R = 0,69, p – value < 2,2e – 16<\/i>). Tr\u00ean c\u01a1 s\u1edf x\u00e1c \u0111\u1ecbnh c\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n c\u00e2y tr\u1ed3ng v\u00e0 ti\u1ec1m n\u0103ng s\u1ea3n xu\u1ea5t \u0111\u1ea5t c\u00e1t v\u00f9ng ven bi\u1ec3n, \u0111\u1ec1 t\u00e0i \u0111\u00e1nh gi\u00e1 ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n c\u00e2y Keo l\u00e1 li\u1ec1m ph\u1ee5c v\u1ee5 c\u00f4ng t\u00e1c tr\u1ed3ng r\u1eebng v\u00f9ng c\u00e1t ven bi\u1ec3n t\u1ec9nh Qu\u1ea3ng Tr\u1ecb l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn, m\u1ee9c \u0111\u1ed9 th\u00edch h\u1ee3p trung b\u00ecnh (S2) cho c\u00e2y Keo l\u00e1 li\u1ec1m t\u1eadp trung ch\u1ee7 y\u1ebfu tr\u00ean l\u1eadp \u0111\u1ecba c\u1ed3n c\u00e1t tr\u1eafng v\u00e0ng (Cc) kho\u1ea3ng 21.089ha v\u00e0 l\u1eadp \u0111\u1ecba c\u1ed3n c\u00e1t v\u00e0ng (Cv) kho\u1ea3ng 2.647ha.<\/p>\n T\u1eeb kh\u00f3a:<\/i><\/b> \u0110\u1ea5t c\u00e1t ven bi\u1ec3n, keo l\u00e1 li\u1ec1m, m\u1ee9c \u0111\u1ed9 th\u00edch h\u1ee3p, ti\u1ec1m n\u0103ng Assessing status and potential of Acacia crassicarpa <\/i>development in sandy area of Quang Tri province coastal zones<\/p>\n Sandy area of Quang Tri province coastal regions has the area of about 34,152ha, accounting for 7.2% of the natural one of the province, in which white golden sand dune and sand beach (Cc) area is 21,089ha, accounting for 61.8%; sandy soil area is 10.410ha, accounting for 30.5%; golden sand dune (Cv) area is 2,647ha, accounting for 7.8% and riverside sand (Cb) area is 5.4ha, accounting for 0.02% the total area of sand, sand dune and sandy beach zones. Sandy areas located in 25 coastal communes of 4 provinces Vinh Linh, Do Linh, Trieu Phong and Hai Lang. The area of uncultivated sandy zones is relatively large, accounting for 29.3% (10,020ha) of the total area of the province\u2019s coastal sandy zones. The area of forests for windbreak and sandbreak is 16,428ha, Acacia auriculiformis<\/i> and Casuarina equisetifolia<\/i> are mainly planted on white sand type, shifting sand dunes so they poorly grow and has low capacity of protection. A trial of Acacia crassicarpa<\/i> to grow in the interior – field sand area has been carried out since 2000, so far 23ha of Acacia crassicarpa<\/i> has been planted, in which 17ha in Trieu Phong and 6 ha in Gio Linh. Acacia crassicarpa<\/i> has been well grown and developed, the survival rate after 27 months is over 90.0%. The tree height and stem diameter is significantly correlated by the equation: Hvn<\/sub> = 0.109 + 0.365*Dgoc (R = 0.69, p – value < 2.2e – 16<\/i>). Based on the identification of key factors affectiing the plant growth and development and production potential when planted in coastal sandey region, the research has evaluated that the development potential of Acacia Crassicarpa<\/i> for reforestation in coastal sandey region of Quang Tri is relatively hight, the appropriate medium level (S2) for Acacia crassicarpa<\/i> mainly on golden white sand (Cc), about 21,089ha and golden sand (Cv), about 2,647ha.<\/p>\n Keywords: <\/i><\/b>Acacia crassicarpa, coastal , sandy soil, development potential, the appropriate level.<\/p>\n X\u00c1C \u0110\u1ecaNH NHI\u1ec6T \u0110\u1ed8 TH\u00c0NH PH\u1ed0 \u0110\u00c0 L\u1ea0T, T\u1ec8NH L\u00c2M \u0110\u1ed2NG GIAI \u0110O\u1ea0N 1779 – 2007 D\u1ef0A TR\u00caN V\u00d2NG T\u0102NG TR\u01af\u1edeNG C\u1ee6A DU SAM (Keteleeria evelyniana <\/i>Masters)<\/p>\n Nguy\u1ec5n V\u0103n Thi\u1ebft M\u1ee5c \u0111\u00edch c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m (1) t\u00ecm hi\u1ec3u \u0111\u1eb7c tr\u01b0ng c\u1ee7a v\u00f2ng n\u0103m c\u00e2y Du sam; (2) t\u00e1i c\u1ea5u tr\u00fac nhi\u1ec7t \u0111\u1ed9 th\u00e1ng 2 c\u1ee7a \u0110\u00e0 L\u1ea1t trong kho\u1ea3ng th\u1eddi gian 1775 – 2007 v\u00e0 (3) t\u00ecm hi\u1ec3u m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa sinh tr\u01b0\u1edfng c\u1ee7a Du sam v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ENSO trong giai \u0111o\u1ea1n 1950 – 2010 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng v\u00f2ng sinh tr\u01b0\u1edfng h\u00e0ng n\u0103m (v\u00f2ng n\u0103m) c\u1ee7a Du sam. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng, sinh tr\u01b0\u1edfng c\u1ee7a Du sam \u0111\u01b0\u1ee3c chia th\u00e0nh nhi\u1ec1u chu k\u1ef3 sinh tr\u01b0\u1edfng kh\u00e1c nhau. S\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 trong c\u00e1c chu k\u1ef3 ENSO trong giai \u0111o\u1ea1n 1950 – 2006 \u0111\u1ec1u c\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1edbi sinh tr\u01b0\u1edfng c\u1ee7a Du sam. Nh\u1eefng n\u0103m c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng El Nino l\u00e0m t\u0103ng tr\u01b0\u1edfng v\u00f2ng n\u0103m c\u1ee7a Du sam b\u1ecb gi\u1ea3m, ho\u1eb7c gi\u1ea3m v\u00e0o nh\u1eefng n\u0103m sau \u0111\u00f3; nh\u1eefng n\u0103m c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng La Nina s\u1ebd l\u00e0m t\u0103ng qu\u00e1 tr\u00ecnh t\u0103ng tr\u01b0\u1edfng v\u00f2ng n\u0103m c\u1ee7a Du sam. B\u00ean c\u1ea1nh \u0111\u00f3, nhi\u1ec7t \u0111\u1ed9 th\u00e1ng 2 c\u1ee7a \u0110\u00e0 L\u1ea1t trong giai \u0111o\u1ea1n 1979 – 2007 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00e1i x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean v\u00f2ng n\u0103m c\u1ee7a Du sam. T\u1eeb \u0111\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u00e1ng 2 c\u1ee7a \u0110\u00e0 L\u1ea1t trong giai \u0111o\u1ea1n 1775 – 2007 \u0111\u01b0\u1ee3c t\u00e1i x\u00e2y d\u1ef1ng.<\/p>\n T\u1eeb kh\u00f3a:<\/i> Du sam, nghi\u00ean c\u1ee9u v\u00f2ng n\u0103m, t\u00e1i c\u1ea5u tr\u00fac kh\u00ed h\u1eadu, ENSO, \u0110\u00e0 L\u1ea1t<\/td>\n<\/tr>\n Using the tree rings of Keteleeria evelyniana <\/i>Masters, <\/i>the February\u2019s temperature of Lam Dong province were <\/i>reconstructed for the past 233 years (1779 – 2007) and the relationship between the Du sam\u2019s tree ring index with ENSO phenomenon in the central highland of Vietnam from 1950 – 2000 was examined. The results indicated that Du sam growth was divided into many different growth periods such as 1865 – 1870; 1884 – 1890 and 1907 – 1916. Furthermore, February\u2019s temperature of Da Lat city was reconstructed for the past 233 years. The reconstruction could explain 29% of temperature variation during the period 1979 – 2007. Moreover, that the change of temperature in the year that ENSO happened affected the tree ring growth. Particularly, the tree ring growth would be decreased in the years that El Nino happened and increased in the years that La Nina occurred.<\/p>\n Key words:<\/i><\/b> Keteleeria evelyniana<\/i>, tree ring width, reconstruted temperature, ENSO<\/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 M\u1ed8T S\u1ed0 M\u00d4 H\u00ccNH TR\u1ed2NG R\u1eeaNG S\u1ea2N XU\u1ea4T T\u1ea0I HUY\u1ec6N Y\u00caN L\u1eacP, T\u1ec8NH PH\u00da TH\u1ecc<\/p>\n Nguy\u1ec5n H\u1ea3i H\u00f2a1<\/sup>, Nguy\u1ec5n V\u0103n Phong2 K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y c\u00f3 06 m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t t\u1ea1i Y\u00ean L\u1eadp, m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng th\u00e2m canh g\u1ed7 nh\u1ecf c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng, t\u1ef7 l\u1ec7 c\u00e2y t\u1ed1t, c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng, tr\u1eef l\u01b0\u1ee3ng r\u1eebng kh\u00e1 cao v\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t nhi\u1ec1u gi\u1eefa c\u00e1c lo\u00e0i c\u00e2y v\u1edbi nhau, c\u00e1c ch\u1ec9 ti\u00eau n\u00e0y cao h\u01a1n h\u1eb3n so v\u1edbi m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng qu\u1ea3ng canh. \u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t cho th\u1ea5y c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t \u0111\u1ec1u c\u00f3 l\u00e3i, trong \u0111\u00f3 m\u00f4 h\u00ecnh tr\u1ed3ng g\u1ed7 l\u1edbn c\u00f3 hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao nh\u1ea5t. Tuy nhi\u00ean, m\u00f4 h\u00ecnh tr\u1ed3ng g\u1ed7 l\u1edbn t\u1ea1o ra s\u1ed1 c\u00f4ng lao \u0111\u1ed9ng th\u1ea5p nh\u1ea5t tr\u00ean 01 n\u0103m so v\u1edbi m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng Keo tai t\u01b0\u1ee3ng v\u00e0 keo lai. V\u1ec1 hi\u1ec7u qu\u1ea3 sinh th\u00e1i m\u00f4i tr\u01b0\u1eddng, m\u00f4 h\u00ecnh tr\u1ed3ng b\u1ea1ch \u0111\u00e0n c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 x\u00f3i m\u00f2n \u0111\u1ea5t (1,5 mm\/n\u0103m) cao h\u01a1n m\u00f4 h\u00ecnh tr\u1ed3ng keo (0,78 mm\/n\u0103m), m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng th\u00e2m canh c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 x\u00f3i m\u00f2n (0,81 mm\/n\u0103m) cao h\u01a1n so v\u1edbi m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng qu\u1ea3ng canh (0,71 mm\/n\u0103m). \u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 t\u1ed5ng h\u1ee3p cho th\u1ea5y m\u00f4 h\u00ecnh tr\u1ed3ng g\u1ed7 l\u1edbn Ect cao nh\u1ea5t (0,82), \u0111\u00e2y l\u00e0 m\u00f4 h\u00ecnh hi\u1ec7u qu\u1ea3 nh\u1ea5t trong khi m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng b\u1ea1ch \u0111\u00e0n c\u00f3 Ect th\u1ea5p nh\u1ea5t (0,60). Tr\u00ean c\u01a1 s\u1edf k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u, b\u00e0i b\u00e1o \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p nh\u1eb1m n\u00e2ng cao hi\u1ec7u qu\u1ea3 ph\u00e1t tri\u1ec3n tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t t\u1ea1i Y\u00ean L\u1eadp.<\/p>\n T\u1eeb kh\u00f3a:<\/i><\/b> B\u1ea1ch \u0111\u00e0n, keo, hi\u1ec7u qu\u1ea3 kinh t\u1ebf, m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i, r\u1eebng tr\u1ed3ng, s\u1eed d\u1ee5ng \u0111\u1ea5t, x\u00f3i m\u00f2n<\/td>\n<\/tr>\n There are six models of forest production plantation in Yen Lap and intensive small timber plantation models have high survival rate, the growth indicators and forest volume are high. There are no significant differences among the species, these indicators are significantly higher than with extensive forest plantation models. Effective evaluation results show that all plantation models of forest production are profitable, including large timber plantation model with the highest economic efficiency. However, large timber plantation model has generated the lowest number of labor forces per year in comparison with plantation model of Acacia mangium<\/i> and Acacia hybrid. In aspect of ecological environment efficiency, Eucalyptus plantation models has higher soil erosion intensity (1.5mm year – 1 <\/sup>ha – 1<\/sup>) than the model of Acacia (0.78mm year – 1<\/sup>), intensive afforestation model has intensity erosion (0.81mm year – 1<\/sup>) compared with models extensive afforestation (0.71mm year – 1<\/sup>). Evaluating the synthetic effectiveness of models shows large timber planting has the highest Ect (0.82), this is the most efficient model while the eucalyptus plantation model has lowest Ect (0.60). Based on study results, the paper has proposed some solutions to improve the efficiency of forest production plantation development in Yen Lap.<\/p>\n Keywords<\/i><\/b>:<\/i> Acacia, eucalyptus, economic efficiency, ecological environment, erosion, plantations, land use<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u0110\u1eb6C \u0110I\u1ec2M \u0110\u1ea4T TR\u1ed2NG M\u1edaI CHO M\u1ed8T S\u1ed0 LO\u00c0I KEO CUNG C\u1ea4P G\u1ed6 L\u1edaN \u1ede 3 V\u00d9NG \u0110\u00d4NG B\u1eaeC B\u1ed8, B\u1eaeC TRUNG B\u1ed8 V\u00c0 NAM TRUNG B\u1ed8<\/p>\n Ph\u1ea1m \u0110\u00ecnh S\u00e2m, Cao V\u0103n L\u1ea1ng, Ho\u00e0ng V\u0103n Th\u00e0nh, Ho\u00e0ng Th\u1ecb Nhung T\u1eeb c\u00e1ch ti\u1ebfp c\u1eadn \u0111i\u1ec1u tra \u0111\u00e1nh gi\u00e1, ph\u00e2n t\u00edch c\u00e1c y\u1ebfu t\u1ed1 l\u1eadp \u0111\u1ecba r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ea5t tr\u1ed3ng m\u1edbi 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 x\u00e1c \u0111\u1ecbnh l\u1eadp \u0111\u1ecba ph\u00f9 h\u1ee3p tr\u00ean \u0111\u1ea5t tr\u1ed3ng m\u1edbi \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho s\u1ea3n xu\u1ea5t m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y ch\u1ee7 l\u1ef1c cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf 3 v\u00f9ng \u0110\u00f4ng B\u1eafc b\u1ed9, B\u1eafc Trung b\u1ed9 v\u00e0 Nam Trung b\u1ed9. Theo \u0111\u00f3 k\u1ebft qu\u1ea3 \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u00e0: (1) <\/b>\u0110\u1ea5t m\u1edbi (ch\u01b0a tr\u1ed3ng keo v\u00e0 b\u1ea1ch \u0111\u00e0n) c\u00f3 ti\u1ec1m n\u0103ng tr\u1ed3ng c\u00e1c lo\u00e0i keo \u1edf c\u00e1c t\u1ec9nh \u0111\u1ea1i di\u1ec7n cho 3 v\u00f9ng sinh th\u00e1i c\u00f2n kh\u00e1 l\u1edbn: \u1edf Qu\u1ea3ng Ninh c\u00f2n 58.669ha; B\u1eafc Giang c\u00f3 11.132ha; Thanh H\u00f3a c\u00f3 83.898ha; Ngh\u1ec7 An c\u00f3 483.489ha; B\u00ecnh \u0110\u1ecbnh c\u00f3 24.486ha v\u00e0 Ph\u00fa Y\u00ean c\u00f3 39.120ha; (2) \u0110\u1ea5t m\u1edbi th\u00edch h\u1ee3p tr\u1ed3ng 3 lo\u00e0i keo cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf 3 v\u00f9ng sinh th\u00e1i l\u00e0 c\u00e1c lo\u1ea1i \u0111\u1ea5t: \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i tr\u1ecdc, \u0111\u1ea5t sau canh t\u00e1c n\u01b0\u01a1ng r\u1eaby, \u0111\u1ea5t \u0111ang canh t\u00e1c n\u01b0\u01a1ng r\u1eaby, c\u00e1c lo\u1ea1i \u0111\u1ea5t Ia, Ib, Ic, \u0111\u1ea5t r\u1eebng th\u1ee9 sinh ngh\u00e8o ki\u1ec7t, v.v… C\u1ee5 th\u1ec3: V\u00f9ng \u0110\u00f4ng B\u1eafc b\u1ed9 l\u00e0 c\u00e1c lo\u1ea1i \u0111\u1ea5t Fs, Fa, Ff, Fp; \u0111\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t >80cm; \u0111\u1ed9 d\u1ed1c <25o<\/sup>; t\u1ef7 l\u1ec7 \u0111\u00e1 l\u1eabn <20%; \u0111\u1ed9 cao so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n <300m. Th\u1ef1c b\u00ec ch\u1ee7 y\u1ebfu \u1edf c\u00e1c tr\u1ea1ng th\u00e1i 1b, 1c, n\u01b0\u01a1ng r\u00e3y, r\u1eebng t\u1ef1 nhi\u00ean sau khai th\u00e1c ki\u1ec7t; V\u00f9ng B\u1eafc Trung b\u1ed9 l\u00e0 c\u00e1c lo\u1ea1i \u0111\u1ea5t Fs, Fp, Fa, Fk; \u0111\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t >80cm; \u0111\u1ed9 d\u1ed1c <25o<\/sup>; t\u1ef7 l\u1ec7 \u0111\u00e1 l\u1eabn <20%; \u0111\u1ed9 cao so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n <400m. Th\u1ef1c b\u00ec ch\u1ee7 y\u1ebfu \u1edf c\u00e1c tr\u1ea1ng th\u00e1i 1b, 1c, n\u01b0\u01a1ng r\u00e3y, r\u1eebng t\u1ef1 nhi\u00ean sau khai th\u00e1c ki\u1ec7t; V\u00f9ng Nam Trung b\u1ed9 l\u00e0 c\u00e1c lo\u1ea1i \u0111\u1ea5t Fa, Fs, Fk, Fp; \u0111\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t >80cm; \u0111\u1ed9 d\u1ed1c <25o<\/sup>; t\u1ef7 l\u1ec7 \u0111\u00e1 l\u1eabn <20%; \u0111\u1ed9 cao so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n <500m. Th\u1ef1c b\u00ec ch\u1ee7 y\u1ebfu \u1edf c\u00e1c tr\u1ea1ng th\u00e1i 1b, 1c, n\u01b0\u01a1ng r\u00e3y, r\u1eebng t\u1ef1 nhi\u00ean sau khai th\u00e1c ki\u1ec7t.<\/p>\n T\u1eeb kh\u00f3a: <\/b>B\u1eafc Trung b\u1ed9, c\u00e1c lo\u00e0i keo, cung c\u1ea5p g\u1ed7 l\u1edbn, \u0111\u1ea5t tr\u1ed3ng m\u1edbi, \u0110\u00f4ng B\u1eafc b\u1ed9, Nam Trung b\u1ed9.<\/td>\n<\/tr>\n Investigating, assessing and analysing site elements in plantations and uncultivated land by specific approachs and expert techniques have identified suitable sites for those in order to attend to saw – log regime for some key spieces in the North East, North Central and South Central. They have resulted in the followings: (1) The uncultivated land (land yet to plant acacia and eucalyptus) has the great potential to grow acacia species in some provinces representing the three ecological regions: 58.669hectares in Quang Ninh; 11.132hectares in Bac Giang; 83.898hectares in Thanh Hoa; 483.489hectares in Nghe An; 24.486hectares in Binh Dinh and 39.120hectares in Phu Yen; (2) The uncultivated land which is appropriate to cultivation of three Acacia spieces for saw – log purpose in these ecological regions can be listed as follows: (i) barren hills; (ii) after burnt – over land; (iii) burnt – over land; (iv) Ia, Ib, Ic land and poor secondary forest land, etc.. They can be specifically named as follows: The North East: Fs, Fa, Ff, Fp; soil depth> 80cm; Slope <25o<\/sup>; stone ratio <20%; elevation above sea level <300m. Major vegetation is in the 1b, 1c land, burnt – over land, exploited natural forest; The North Central: Fs, Fp, Fa, Fk; soil depth> 80cm; Slope <25o<\/sup>; stone ratio <20%; elevation above sea level <400m. Major vegetation is in the 1b, 1c land, burnt – over land, exploited natural forest; The South Central: Fa, Fs, Fk, Fp; soil depth> 80cm; Slope <2o<\/sup>; stone ratio <20%; elevation above sea level <500m. Major vegetation is in the 1b, 1c land, burnt – over land, exploited natural forest.<\/p>\n Keywords: Acacia species, North East, North Central, saw – log, South Central, Uncultivated land.<\/p>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n TH\u1ef0C TR\u1ea0NG QU\u1ea2N L\u00dd CHI TR\u1ea2 D\u1ecaCH V\u1ee4 M\u00d4I TR\u01af\u1edcNG R\u1eeaNG D\u1ef0A V\u00c0O C\u1ed8NG \u0110\u1ed2NG NG\u01af\u1edcI D\u00c2N T\u1ed8C M\u01af\u1edcNG V\u00d9NG PH\u00d2NG H\u1ed8 \u0110\u1ea6U NGU\u1ed2N, HUY\u1ec6N \u0110\u00c0 B\u1eaeC, H\u00d2A B\u00ccNH<\/p>\n Ho\u00e0ng Li\u00ean S\u01a1n, L\u00ea V\u0103n C\u01b0\u1eddng, V\u0169 Duy H\u01b0ng Nghi\u00ean c\u1ee9u \u0111\u01b0\u01a1\u0323c th\u01b0\u0323c hi\u00ea\u0323n ta\u0323i 4 th\u00f4n thu\u1ed9c 2 x\u00e3 Hi\u1ec1n L\u01b0\u01a1ng v\u00e0 Ti\u1ec1n Phong, huy\u1ec7n \u0110\u00e0 B\u1eafc, t\u1ec9nh H\u00f2a B\u00ecnh v\u00ea\u0300 qua\u0309n ly\u0301 r\u01b0\u0300ng ph\u00f2ng h\u1ed9 \u0111\u00e2\u0300u ngu\u00f4\u0300n d\u01b0\u0323a va\u0300o c\u00f4\u0323ng \u0111\u00f4\u0300ng ng\u01b0\u1eddi d\u00e2n t\u00f4\u0323c M\u01b0\u1eddng. K\u1ebft qu\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u cho th\u1ea5y, \u1edf ca\u0301c vu\u0300ng r\u01b0\u0300ng pho\u0300ng h\u00f4\u0323 \u0111\u00e2\u0300u ngu\u00f4\u0300n co\u0301 r\u00e2\u0301t nhi\u00ea\u0300u chu\u0309 th\u00ea\u0309 tham gia qua\u0309n ly\u0301, s\u01b0\u0309 du\u0323ng r\u01b0\u0300ng theo nhi\u00ea\u0300u hi\u0300nh th\u01b0\u0301c va\u0300 c\u01a1 ch\u00ea\u0301 kha\u0301c nhau, tuy v\u00e2\u0323y chu\u0309 th\u00ea\u0309 chi\u0301nh th\u01b0\u0323c hi\u00ea\u0323n c\u00f4ng vi\u00ea\u0323c na\u0300y la\u0300 nh\u01b0\u0303ng c\u00f4\u0323ng \u0111\u00f4\u0300ng d\u00e2n c\u01b0, h\u00f4\u0323 gia \u0111i\u0300nh ng\u01b0\u01a1\u0300i d\u00e2n t\u00f4\u0323c thi\u00ea\u0309u s\u00f4\u0301 co\u0301 t\u00e2\u0323p qua\u0301n, truy\u1ec1n th\u1ed1ng g\u1eafn b\u00f3 v\u1edbi r\u1eebng trong s\u1ea3n xu\u1ea5t, v\u0103n ho\u00e1 va\u0300 t\u00edn ng\u01b0\u1ee1ng; va\u0300 c\u00f3 n\u0103ng l\u01b0\u0323c t\u01b0\u0323 qua\u0309n \u0111\u00ea\u0309 t\u00f4\u0309 ch\u01b0\u0301c ba\u0309o v\u00ea\u0323 va\u0300 pha\u0301t tri\u00ea\u0309n r\u1eebng. Trong b\u00f4\u0301i ca\u0309nh \u01b0\u0301ng pho\u0301 v\u01a1\u0301i bi\u00ea\u0301n \u0111\u00f4\u0309i khi\u0301 h\u00e2\u0323u, gia\u0301 tri\u0323 di\u0323ch vu\u0323 m\u00f4i tr\u01b0\u01a1\u0300ng r\u01b0\u0300ng (DVMTR) nga\u0300y ca\u0300ng \u0111\u01b0\u01a1\u0323c quan t\u00e2m coi tro\u0323ng \u0111\u1ec3 ta\u0323o th\u00eam thu nh\u1eadp, \u0111\u00f3ng g\u00f3p ph\u00e1t tri\u1ec3n kinh t\u1ebf h\u1ed9 gia \u0111\u00ecnh th\u00f4ng qua ph\u01b0\u01a1ng th\u01b0\u0301c qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean r\u1eebng d\u01b0\u0323a va\u0300o c\u1ed9ng \u0111\u1ed3ng. K\u00ea\u0301t qua\u0309 nghi\u00ean c\u01b0\u0301u \u0111a\u0303 chi\u0309 ro\u0303 vi\u00ea\u0323c qu\u1ea3n l\u00fd chi tr\u1ea3 ca\u0301c d\u1ecbch v\u1ee5 m\u00f4i tr\u01b0\u1eddng r\u1eebng (DVMTR) \u1edf c\u1ea5p c\u1ed9ng \u0111\u1ed3ng \u0111\u00f2i h\u1ecfi c\u00e1ch ti\u1ebfp c\u1eadn m\u1edbi trong th\u01b0\u0323c thi ch\u00ednh s\u00e1ch chi tr\u1ea3 DVMTR.<\/p>\n T\u1eeb kh\u00f3a:<\/i><\/b> Chi tr\u1ea3 DVMTR, c\u01a1 ch\u1ebf chia s\u1ebb l\u1ee3i \u00edch, qu\u1ea3n l\u00fd r\u1eebng d\u1ef1a v\u00e0o c\u1ed9ng \u0111\u1ed3ng<\/td>\n<\/tr>\n The study was conducted in 4 villages in Hien Luong commune 2 and Tien Phong, Da Bac district, Hoa Binh province about forest management based on Muong ethnic community in watershed protection. A result of the study show that is in the region of watershed protection forest has many actors to manage and use of forests in many forms and different mechanisms. However, key stakeholders of this work are ethnic minority communities and households, those are customs and traditional to deal with forests in production, culture and religious. They have self – management capabilities for organizations to protect and develop forests. In the context of responding to climate change, the value of forest environmental services are increasingly interested in order to create incomes for contribution to the household economy through community based management of natural resources. The study results indicated that managing payments for forest environmental services (PFES) at the community level requires a new approach in implementation PFES policy<\/p>\n Key words:<\/i><\/b> Payment of forest environmental services (PFES), sharing benefit mechanism, community based forest management<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n NGHI\u00caN C\u1ee8U SINH K\u1ebe C\u1ee6A N\u00d4NG H\u1ed8 T\u1ea0I X\u00c3 \u0110\u1eaeK SOM,<\/p>\n HUY\u1ec6N \u0110\u1eaeK GLONG, T\u1ec8NH \u0110\u1eaeK N\u00d4NG<\/p>\n Tuy\u1ebft Hoa Ni\u00ea Kd\u0103m, Tr\u1ea7n Trung D\u0169ng B\u00e0i vi\u1ebft s\u1eed d\u1ee5ng khung ph\u00e2n t\u00edch sinh k\u1ebf (DFID) v\u00e0 d\u1eef li\u1ec7u thu th\u1eadp t\u01b0\u0300 k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra 141 h\u1ed9 gia \u0111\u00ecnh \u0111\u1ec3 ph\u00e2n t\u00edch th\u1ef1c tr\u1ea1ng sinh k\u1ebf c\u1ee7a h\u1ed9 n\u00f4ng d\u00e2n t\u1ea1i x\u00e3 \u0110\u1eafk Som. N\u1ed9i dung c\u1ee7a b\u00e0i vi\u1ebft t\u1eadp trung ph\u00e2n t\u00edch v\u00e0 \u0111\u00e1nh gi\u00e1 c\u00e1c ngu\u1ed3n l\u1ef1c sinh k\u1ebf, t\u1eeb \u0111\u00f3 \u0111\u01b0a ra khuy\u1ebfn ngh\u1ecb nh\u1eb1m c\u1ea3i thi\u1ec7n sinh k\u1ebf c\u1ee7a ng\u01b0\u1eddi d\u00e2n trong x\u00e3. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch cho th\u1ea5y c\u00e1c ngu\u1ed3n l\u1ef1c sinh k\u1ebf c\u1ee7a n\u00f4ng h\u1ed9 trong x\u00e3 c\u00f2n kh\u00e1 h\u1ea1n ch\u1ebf v\u00e0 nh\u00f3m ng\u01b0\u1eddi kinh r\u1ea5t c\u00f3 l\u1ee3i th\u1ebf v\u1ec1 ngu\u1ed3n nh\u00e2n l\u1ef1c nh\u01b0 tr\u00ecnh \u0111\u1ed9 h\u1ecdc v\u1ea5n v\u00e0 kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd t\u00e0i ch\u00ednh v\u00e0 t\u1ed5 ch\u1ee9c s\u1ea3n xu\u1ea5t so v\u1edbi nh\u00f3m h\u1ed9 ng\u01b0\u1eddi d\u00e2n t\u1ed9c thi\u1ec3u s\u1ed1 t\u1ea1i ch\u1ed7 v\u00e0 nh\u00f3m h\u1ed9 ng\u01b0\u1eddi d\u00e2n t\u1ed9c kh\u00e1c. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua ngu\u1ed3n l\u1ef1c \u0111\u1ea5t \u0111ai c\u1ee7a nh\u00f3m h\u1ed9 ng\u01b0\u1eddi d\u00e2n t\u1ed9c t\u1ea1i ch\u1ed7 l\u1edbn h\u01a1n nh\u01b0ng s\u1eed d\u1ee5ng kh\u00f4ng hi\u1ec7u qu\u1ea3 b\u1eb1ng nh\u00f3m h\u1ed9 ng\u01b0\u1eddi kinh, d\u1eabn \u0111\u1ebfn thu nh\u1eadp c\u1ee7a h\u1ecd th\u1ea5p h\u01a1n.<\/p>\n T\u1eeb kh\u00f3a:<\/i><\/b> Khung ph\u00e2n t\u00edch sinh k\u1ebf, sinh k\u1ebf, d\u00e2n t\u1ed9c thi\u1ec3u s\u1ed1, n\u00f4ng h\u1ed9, kinh t\u1ebf n\u00f4ng h\u1ed9<\/td>\n<\/tr>\n Study using the analytical Sustainable livelihoods framework (DFID) and the collected data from 141 farmer household – survey to analyze the status of the livelihoods of farmers in Dak Som commune. The content of the article focuses on analyzing and assessing the livelihood resources from which provide recommendations to improve the livelihood of commune inhabitants. The analytical results shows that the livelihood resources of households in the commune are quite limited and the Kinh group has many advantages in human resources, such as educational level and financial management capacity, compares with the local ethnic minorities groups and other minority groups. This is expressed though the fact that the land resource of the local ethnic minorities groups is larger but are used less effectively than the group of Kinh people,that lead to he lower income of the local ethnic group.<\/p>\n Key words:<\/i><\/b> The analytical Sustainable livelihoods framework, livelihood, ethnic minorities, farmer household, farmer household economic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U THI\u1ebeT K\u1ebe, CH\u1ebe T\u1ea0O M\u00c1Y B\u0102M NGHI\u1ec0N C\u00c0NH L\u00c1, V\u1ece C\u00c2Y S\u1ea2N XU\u1ea4T COMPOST L\u00c0M GI\u00c1 TH\u1ec2 \u01af\u01a0M C\u00c2Y GI\u1ed0NG L\u00c2M NGHI\u1ec6P<\/p>\n L\u00ea Xu\u00e2n Ph\u00fac1<\/sup>, T\u00f4 Qu\u1ed1c Huy2<\/sup>, Ph\u1ea1m \u0110\u00ecnh M\u1ea1nh1<\/sup>, Cao Ch\u00ed C\u00f4ng1<\/sup> M\u00e1y b\u0103m nghi\u1ec1n c\u00e0nh, l\u00e1, v\u1ecf c\u00e2y r\u1eebng tr\u1ed3ng l\u00e0m nguy\u00ean li\u1ec7u s\u1ea3n xu\u1ea5t compost ph\u1ee5c v\u1ee5 \u01b0\u01a1m c\u00e2y gi\u1ed1ng l\u00e2m nghi\u1ec7p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf, ch\u1ebf t\u1ea1o v\u1edbi nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c v\u00e0 k\u1ebft c\u1ea5u ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1eb7c \u0111i\u1ec3m nguy\u00ean li\u1ec7u v\u00e0 \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam. M\u00e1y \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p hai b\u1ed9 ph\u1eadn b\u0103m v\u00e0 nghi\u1ec1n l\u00e0m vi\u1ec7c li\u00ean ho\u00e0n, v\u1eeba c\u00f3 k\u1ebft c\u1ea5u g\u1ecdn nh\u1eb9 v\u1eeba \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m chi ph\u00ed n\u0103ng l\u01b0\u1ee3ng. K\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m trong \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t cho th\u1ea5y m\u00e1y l\u00e0m vi\u1ec7c \u1ed5n \u0111\u1ecbnh, n\u0103ng su\u1ea5t trung b\u00ecnh \u0111\u1ea1t 1,07 t\u1ea5n\/gi\u1edd khi b\u0103m nghi\u1ec1n c\u00e0nh l\u00e1 v\u00e0 0,76 t\u1ea5n\/gi\u1edd khi b\u0103m nghi\u1ec1n v\u1ecf c\u00e2y sau khai th\u00e1c trong v\u00f2ng 5 ng\u00e0y. C\u00e1c ch\u1ec9 ti\u00eau n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m v\u01b0\u1ee3t so v\u1edbi y\u00eau c\u1ea7u, chi ph\u00ed n\u0103ng l\u01b0\u1ee3ng h\u1ee3p l\u00fd. M\u1eabu m\u00e1y \u0111\u00e1p \u1ee9ng t\u1ed1t c\u00e1c y\u00eau c\u1ea7u c\u01a1 gi\u1edbi ho\u00e1 s\u1ea3n xu\u1ea5t nguy\u00ean li\u1ec7u \u1ee7 compost t\u1eeb c\u00e0nh l\u00e1, v\u1ecf c\u00e2y r\u1eebng tr\u1ed3ng sau khai th\u00e1c, g\u00f3p ph\u1ea7n n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m r\u1eebng tr\u1ed3ng,…<\/p>\n T\u1eeb kh\u00f3a:<\/i><\/b> S\u1ea3n ph\u1ea9m ph\u1ee5 r\u1eebng tr\u1ed3ng (c\u00e0nh, l\u00e1, v\u1ecf c\u00e2y), m\u00e1y b\u0103m nghi\u1ec1n, ph\u00e2n m\u00f9n h\u1eefu c\u01a1<\/td>\n<\/tr>\n The construction and working principles of the machine for cutting and grinding tree branches, leaves and barks were designed to match the material and working practices in Vietnamese forestry production. The machine were incorporated with the continuous cutting and grinding parts, all of them have light and compact construction, assuring high quality and low energy costs. In the preliminary tests, the average output was 1.07 ton per hour for leaves and small branches and 0.76 ton per hour for barks within 5 days post – harvest. The output and product quality index were higher than requirement and energy consumption were kept at reasonable level. The machine can be used effectively in mechanization of compost production after forest harvest, optimizing the usage of forest plantations<\/p>\n Key words:<\/i><\/b> Sub – products of forest trees (<\/b>branches, leaves and barks), <\/b>machine for cutting and grinding, compost<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u1ea2NH H\u01af\u1edeNG C\u1ee6A X\u1eec L\u00dd NG\u00c2M N\u01af\u1edaC \u0110\u1ebeN TH\u00c0NH PH\u1ea6N H\u00d3A H\u1eccC, T\u00cdNH CH\u1ea4T C\u01a0 L\u00dd C\u1ee6A G\u1ed6 G\u00c1O TR\u1eaeNG (Neolamarckia cadamba)<\/i><\/p>\n T\u1ea1 Th\u1ecb Ph\u01b0\u01a1ng Hoa, Nguy\u1ec5n Th\u1ecb Minh Nguy\u1ec7t |