{"id":2176,"date":"2020-05-19T10:05:36","date_gmt":"2020-05-19T03:05:36","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2176"},"modified":"2023-11-23T12:24:52","modified_gmt":"2023-11-23T05:24:52","slug":"vietnam-journal-of-forest-science-number-2-2020","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/vietnam-journal-of-forest-science-number-2-2020\/","title":{"rendered":"Vietnam Journal of Forest Science Number 2-2020"},"content":{"rendered":"

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<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 2<\/strong> – <\/strong>20<\/strong>20<\/strong><\/p>\n

\u00a0<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\nNh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng hom\u00a0 c\u00e2y X\u00e1 x\u1ecb (Cinnamomum parthenoxylon<\/em> Meisn.)
\nv\u00e0 tr\u1ed3ng th\u1eed nghi\u1ec7m \u1edf
\nv\u01b0\u1eddn \u01b0\u01a1m t\u1ea1i L\u00e2m \u0110\u1ed3ng<\/td>\n		The propagation of Cinnamomum parthenoxylon<\/em> Meisn.
\nby cuttings method and experimental grown at
\nthe nursery in Lam Dong province<\/td>\n		L\u00ea H\u1ed3ng \u00c9n
\nNguy\u1ec5n Thanh Nguy\u00ean<\/td>\n		3<\/td>\n<\/tr>\n
2.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a k\u1ef9 thu\u1eadt th\u00e2m canh \u0111\u1ebfn sinh tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t g\u1ed7 r\u1eebng tr\u1ed3ng Keo l\u00e1 tr\u00e0m 36 th\u00e1ng tu\u1ed5i
\n\u1edf U\u00f4ng B\u00ed – Qu\u1ea3ng Ninh<\/td>\n		Effects of some intensive afforestation techniques to the growth and productivity of 36 – months – old Acacia auriculiformis<\/em> plantation
\nin Uong Bi – Quang Ninh<\/td>\n		Ph\u1ea1m \u0110\u00ecnh S\u00e2m
\nNguy\u1ec5n Huy S\u01a1n
\nV\u0169 Ti\u1ebfn L\u00e2m
\nH\u1ed3 Trung L\u01b0\u01a1ng
\nCao V\u0103n L\u1ea1ng<\/td>\n		10<\/td>\n<\/tr>\n
3.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng v\u00e0 sinh kh\u1ed1i\u00a0 c\u1ee7a r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng 7 tu\u1ed5i
\nt\u1ea1i Y\u00ean B\u00e1i<\/td>\n		Growth and biomass characteristics of a 7 – years old Acacia mangium<\/em> plantation in Yen Bai province<\/td>\nNguy\u1ec5n V\u0103n B\u00edch
\nNguy\u1ec5n \u0110\u0103ng C\u01b0\u1eddng
\nCao Th\u1ecb Thu Hi\u1ec1n
\nB\u00f9i M\u1ea1nh H\u01b0ng<\/td>\n		22<\/td>\n<\/tr>\n
4.<\/td>\nSinh tr\u01b0\u1edfng v\u00e0 m\u1ed9t s\u1ed1
\nt\u00ednh ch\u1ea5t g\u1ed7 c\u1ee7a b\u1ea1ch \u0111\u00e0n lai gi\u1eefa B\u1ea1ch \u0111\u00e0n ur\u00f4 v\u1edbi c\u00e1c lo\u00e0i b\u1ea1ch \u0111\u00e0n kh\u00e1c\u00a0 trong kh\u1ea3o nghi\u1ec7m t\u1ed5 h\u1ee3p lai t\u1ea1i Ba V\u00ec<\/td>\n		Growth, wood basic density and modulus of elasticity
\nof hybrid combinations between Eucalyptus urophylla<\/em> and other species at Ba Vi<\/td>\n		Nguy\u1ec5n H\u1eefu S\u1ef9
\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean
\nH\u00e0 Huy Th\u1ecbnh
\nNg\u00f4 V\u0103n Ch\u00ednh
\nNguy\u1ec5n Qu\u1ed1c To\u1ea3n
\nTr\u1ea7n Th\u1ecb Thanh Th\u00f9y
\nTr\u1ea7n Duy H\u01b0ng<\/td>\n		32<\/td>\n<\/tr>\n
5.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a bi\u1ebfn \u0111\u1ed5i
\nkh\u00ed h\u1eadu \u0111\u1ebfn b\u1ec1 r\u1ed9ng
\nv\u00f2ng n\u0103m Th\u00f4ng 5 l\u00e1 (Pinus dalatensis<\/em> Ferr\u00e9)
\n\u1edf T\u00e2y Nguy\u00ean<\/td>\n		The impact of climatic change on tree-ring width
\nof Pinus dalatensis<\/em> Ferr\u00e9
\nin the Central Highlands
\nof Vietnam<\/td>\n		L\u00ea C\u1ea3nh Nam
\nB\u00f9i Th\u1ebf Ho\u00e0ng
\nTr\u01b0\u01a1ng Quang C\u01b0\u1eddng v\u00e0 B\u1ea3o Huy<\/td>\n		40<\/td>\n<\/tr>\n
6.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i v\u00e0 c\u1ea5u t\u1ea1o gi\u1ea3i ph\u1eabu\u00a0 lo\u00e0i Tam th\u1ea5t g\u1eebng (Stahlianthus thorelii<\/em> Gagnep)\u00a0 tr\u1ed3ng t\u1ea1i huy\u1ec7n
\nBa V\u00ec, H\u00e0 N\u1ed9i<\/td>\n		Morphological characteristics and anatomical structure of Stahlianthus thorelii<\/em> Gagnep growing in Ba Vi district, Ha Noi city<\/td>\nL\u00ea V\u0103n Quang
\nTr\u1ea7n Ng\u1ecdc H\u1ea3i
\nHo\u00e0ng Li\u00ean S\u01a1n<\/td>\n		52<\/td>\n<\/tr>\n
7.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc\u00a0 c\u1ee7a c\u00e2y \u01af\u01a1i (Scaphium macropodum<\/em> (Miq.) Beum\u00e9e ex K.Heyne) \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh v\u00f9ng Nam Trung B\u1ed9<\/td>\nSilvicultural characteristics of Scaphium macropodum<\/em> (Miq.) Beum\u00e9e ex K.Heyne in some provinces of Southern Central Coast Region<\/td>\nNguy\u1ec5n H\u1eefu Th\u1ecbnh
\nPh\u1ea1m \u0110\u00ecnh S\u00e2m
\nH\u1ed3 Trung L\u01b0\u01a1ng
\nD\u01b0\u01a1ng Quang Trung
\nHo\u00e0ng Thanh S\u01a1n<\/td>\n		59<\/td>\n<\/tr>\n
8.<\/td>\nQuan h\u1ec7 c\u1ee7a Xoan \u0111\u00e0o v\u1edbi c\u00e1c lo\u00e0i c\u00e2y kh\u00e1c\u00a0 trong r\u1eebng t\u1ef1 nhi\u00ean \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda B\u1eafc<\/td>\nStudy of relationship between Prunus arborea<\/em> (Blume) Kalkman with other species in natural forest in some Northern provinces<\/td>\nHo\u00e0ng V\u0103n Th\u1eafng<\/td>\n69<\/td>\n<\/tr>\n
9.<\/td>\nS\u1eed d\u1ee5ng NMDS \u0111\u1ec3 nghi\u00ean c\u1ee9u xu h\u01b0\u1edbng trong t\u1ed5 th\u00e0nh lo\u00e0i c\u00e2y g\u1ed7 \u1edf Khu D\u1ef1 tr\u1eef Sinh quy\u1ec3n \u0110\u1ed3ng Nai<\/td>\nUsing NMDS to study patterns of tree species composition in Dong Nai Biosphere Reserve<\/td>\nNguy\u1ec5n Th\u1ecb Th\u00f9y
\nTr\u1ea7n L\u00e2m \u0110\u1ed3ng
\nHo\u00e0ng Thanh S\u01a1n
\nTr\u1ecbnh Ng\u1ecdc Bon
\nNinh Vi\u1ec7t Kh\u01b0\u01a1ng
\nPh\u00f9ng \u0110\u00ecnh Trung
\nNguy\u1ec5n Th\u1ecb Thu Ph\u01b0\u01a1ng
\n\u0110\u1ed7 Th\u1ecb Thanh H\u00e0
\nTr\u1ea7n Ho\u00e0ng Qu\u00fd
\nNguy\u1ec5n V\u0103n Tu\u1ea5n
\nD\u01b0\u01a1ng Quang Trung<\/td>\n		77<\/td>\n<\/tr>\n
10.<\/td>\nB\u1ec7nh th\u1ed1i qu\u1ea3 T\u00e1o m\u00e8o t\u1ea1i Vi\u1ec7t Nam<\/td>\nRot disease on Docynia indica<\/em> fruit in Vietnam<\/td>\nPh\u1ea1m Quang Thu
\nL\u00ea V\u0103n B\u00ecnh
\nNguy\u1ec5n Minh Ch\u00ed<\/td>\n		84<\/td>\n<\/tr>\n
11.<\/td>\nHi\u1ec7n tr\u1ea1ng b\u1ec7nh ch\u1ebft h\u00e9o r\u1eebng tr\u1ed3ng keo t\u1ea1i T\u1ed5ng c\u00f4ng ty Gi\u1ea5y Vi\u1ec7t Nam<\/td>\nCeratocystis wilt disease of Acacia plantations in Vietnam Paper Corporation<\/td>\nNguy\u1ec5n Minh Ch\u00ed
\nPh\u1ea1m Quang Thu
\nPh\u1ea1m \u0110\u1ee9c Huy
\nNguy\u1ec5n Tu\u1ea5n Anh<\/td>\n		91<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/a>NH\u00c2N GI\u1ed0NG V\u00d4 T\u00cdNH B\u1eb0NG HOM C\u00c2Y X\u00c1 X\u1eca (Cinnamomum parthenoxylon<\/em> Meisn.) V\u00c0 TR\u1ed2NG TH\u1eec NGHI\u1ec6M \u1ede V\u01af\u1edcN \u01af\u01a0M T\u1ea0I L\u00c2M \u0110\u1ed2NG<\/p>\n

\u00a0L\u00ea H\u1ed3ng \u00c9n v\u00e0 Nguy\u1ec5n Thanh Nguy\u00ean<\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean<\/p>\n\n\n\n\n
<\/a>T\u00d3M T\u1eaeT<\/p>\n

Trong nghi\u00ean c\u1ee9u n\u00e0y, c\u00e1c ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng th\u1ef1c v\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ti\u1ebfn h\u00e0nh gi\u00e2m hom c\u00e2y X\u00e1 x\u1ecb tr\u00ean gi\u00e1 th\u1ec3 c\u00e1t l\u00e0 \u03b1-<\/em>NAA, IAA v\u00e0 \u03b2<\/em>-IBA v\u1edbi d\u1ea3i n\u1ed3ng \u0111\u1ed9 t\u1eeb 0,5% \u0111\u1ebfn 2,0%. V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u l\u00e0 hom b\u00e1nh t\u1ebb t\u1eeb v\u01b0\u1eddn s\u01b0u t\u1eadp c\u00f3 tu\u1ed5i kho\u1ea3ng 20 n\u0103m. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n 3 l\u1ea7n l\u1eb7p v\u1edbi 30 m\u1eabu cho m\u1ed7i c\u00f4ng th\u1ee9c\/l\u1ea7n l\u1eb7p, th\u1eddi gian th\u1ef1c hi\u1ec7n gi\u00e2m hom t\u1eeb th\u00e1ng 10 \u0111\u1ebfn th\u00e1ng 11. K\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c sau 75 ng\u00e0y cho th\u1ea5y, hom h\u00f3a g\u1ed7 m\u1ed9t ph\u1ea7n cho k\u1ebft qu\u1ea3 cao h\u01a1n hom h\u00f3a g\u1ed7 to\u00e0n ph\u1ea7n ho\u1eb7c hom ch\u01b0a h\u00f3a g\u1ed7. Khi b\u1ed5 sung thu\u1ed1c \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng th\u1ef1c v\u1eadt th\u00ec \u1edf t\u1ea5t c\u1ea3 c\u00e1c n\u1ed3ng \u0111\u1ed9 \u0111\u1ec1u c\u00f3 c\u00e1c th\u00f4ng s\u1ed1 ra r\u1ec5 cao h\u01a1n \u0111\u1ed1i ch\u1ee9ng, n\u1ed3ng \u0111\u1ed9 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao nh\u1ea5t \u0111\u1ed1i v\u1edbi thu\u1ed1c \u03b1-<\/em>NAA l\u00e0 1,0 – 1,5%, IAA l\u00e0 1,5% v\u00e0 \u03b2<\/em>-IBA l\u00e0 1,0%. Trong 3 lo\u1ea1i ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng th\u1ef1c v\u1eadt th\u00ec s\u1eed d\u1ee5ng \u03b2<\/em>-IBA 1,0% mang l\u1ea1i hi\u1ec7u qu\u1ea3 cao nh\u1ea5t v\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng, t\u1ef7 l\u1ec7 ra r\u1ec5, t\u1ef7 l\u1ec7 c\u00f3 r\u1ec5 th\u1ee9 c\u1ea5p, s\u1ed1 l\u01b0\u1ee3ng r\u1ec5 v\u00e0 chi\u1ec1u d\u00e0i r\u1ec5 t\u01b0\u01a1ng \u1ee9ng l\u00e0 70,00%, 64,44%, 21,11%, 3,50 c\u00e1i v\u00e0 3,06 cm. T\u1ea1i v\u01b0\u1eddn \u01b0\u01a1m, \u0111\u1ec3 mang l\u1ea1i hi\u1ec7u qu\u1ea3 cao nh\u1ea5t khi ra b\u1ea7u c\u00e2y ch\u1ec9 n\u00ean ra b\u1ea7u khi hom X\u00e1 x\u1ecb \u0111\u00e3 xu\u1ea5t hi\u1ec7n r\u1ec5 th\u1ee9 c\u1ea5p v\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 100%.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng th\u1ef1c v\u1eadt, gi\u00e2m hom, ra r\u1ec5, X\u00e1 x\u1ecb<\/td>\n<\/tr>\n

\n

<\/a>The propagation of Cinnamomum parthenoxylon<\/em> Meisn. by cuttings method and experimental grown at the nursery in Lam Dong province<\/strong><\/p>\n

In this study, plant growth regulators used to test for cuttings of Cinnamomum parthenoxylon<\/em> Meisn. on the sand. That is \u03b1-<\/em>NAA, IAA and \u03b2<\/em>-IBA with concentrations from 0.5% to 2.0%. The researched material is cuttings from the collection garden that is about 20 years old. The experiment was carried out with 3 replications with 30 samples for each formula\/replicate. The time for cutting was from October to November. The results received after 75 days show that semi – hardwood cuttings give higher results than hardwood cuttings or softwood cuttings. All the rooting parameters were higher than the control when we added the concentration of plant growth regulators. The most effective concentration for \u03b1-<\/em>NAA was 1.0 – 1.5%, IAA is 1.5%, and \u03b2<\/em>-IBA is 1.0%. Among the 3 types of plant growth regulators, 1.0% \u03b2<\/em>-IBA was most effective with survival rate, rooting rate, secondary root rate, root number, and root length, respectively is 70.00%, 64.44%, 21.11%, 3.50 roots, and 3.06 cm. In the nursery, the sapling was grown to take the highest efficiency when they appeared in secondary roots with a survival rate of 100%.<\/p>\n

Keywords:<\/em><\/strong> Plant growth regulators, cuttings, rooting, Cinnamomum parthenoxylon<\/em> Meisn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A K\u1ef8 THU\u1eacT TH\u00c2M CANH \u0110\u1ebeN SINH TR\u01af\u1edeNG V\u00c0 N\u0102NG SU\u1ea4T G\u1ed6 R\u1eeaNG TR\u1ed2NG KEO L\u00c1 TR\u00c0M 36 TH\u00c1NG TU\u1ed4I \u1ede U\u00d4NG B\u00cd – QU\u1ea2NG NINH<\/p>\n

<\/a>Ph\u1ea1m \u0110\u00ecnh S\u00e2m, Nguy\u1ec5n Huy S\u01a1n, V\u0169 Ti\u1ebfn L\u00e2m,
\nH\u1ed3 Trung L\u01b0\u01a1ng, Cao V\u0103n L\u1ea1ng<\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng th\u00e2m canh Keo l\u00e1 tr\u00e0m d\u00f2ng Clt7 v\u00e0 Clt98 t\u1ea1i U\u00f4ng B\u00ed, Qu\u1ea3ng Ninh trong giai \u0111o\u1ea1n 2016 – 2019 b\u1eb1ng c\u00e1c bi\u1ec7n ph\u00e1p x\u1eed l\u00fd th\u1ef1c b\u00ec, l\u00e0m \u0111\u1ea5t, b\u00f3n ph\u00e2n v\u00e0 m\u1eadt \u0111\u1ed9 tr\u1ed3ng. Theo d\u00f5i c\u00e1c th\u00ed nghi\u1ec7m n\u00e0y sau 36 th\u00e1ng cho th\u1ea5y, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c (D1,3<\/sub>) c\u1ee7a Keo l\u00e1 tr\u00e0m trong c\u00e1c th\u00ed nghi\u1ec7m \u0111\u1ea1t t\u1eeb 8,76 – 10,11 cm, chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn<\/sub>) \u0111\u1ea1t t\u1eeb 11,74 – 13,25 m v\u00e0 tr\u1eef l\u01b0\u1ee3ng g\u1ed7 c\u00e2y \u0111\u1ee9ng (M) \u0111\u1ea1t t\u1eeb 48,58 – 56,31 m3<\/sup>\/ha, t\u01b0\u01a1ng \u1ee9ng v\u1edbi n\u0103ng su\u1ea5t g\u1ed7 (\u0394M) \u0111\u1ea1t t\u1eeb 16,19 – 18,77 m3<\/sup>\/ha\/n\u0103m. Trong c\u00e1c bi\u1ec7n ph\u00e1p th\u00e2m canh \u0111\u00f3, sau 36 th\u00e1ng \u0111\u00e3 cho th\u1ea5y c\u00e1c th\u00ed nghi\u1ec7m v\u1ec1 x\u1eed l\u00fd th\u1ef1c b\u00ec v\u00e0 ch\u0103m s\u00f3c ch\u01b0a c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t \u0111\u1ebfn n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng Keo l\u00e1 tr\u00e0m, trong khi \u0111\u00f3 c\u00e1c th\u00ed nghi\u1ec7m v\u1ec1 l\u00e0m \u0111\u1ea5t, b\u00f3n ph\u00e2n v\u00e0 m\u1eadt \u0111\u1ed9 tr\u1ed3ng \u0111\u00e3 c\u00f3 s\u1ef1 kh\u00e1c nhau gi\u1eefa c\u00e1c th\u00ed nghi\u1ec7m. Sau 36 th\u00e1ng, Keo l\u00e1 tr\u00e0m cho n\u0103ng su\u1ea5t cao nh\u1ea5t trong c\u00e1c c\u00f4ng th\u1ee9c cu\u1ed1c h\u1ed1 k\u00edch th\u01b0\u1edbc 40 \u00b4 40 \u00b4 40 cm, b\u00f3n l\u00f3t l\u00f3t 1 kg ph\u00e2n vi sinh S\u00f4ng Gianh v\u00e0 b\u00f3n th\u00fac 0,4 kg P2<\/sub>O5<\/sub> + 0,1 kg K2<\/sub>O trong 2 n\u0103m \u0111\u1ea7u, v\u1edbi m\u1eadt \u0111\u1ed9 1.666 c\u00e2y\/ha, x\u1eed l\u00fd th\u1ef1c b\u00ec b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t tr\u1eafng v\u00e0 \u0111\u01b0\u1ee3c r\u1ea3i \u0111\u1ec1u, ch\u0103m s\u00f3c 3 l\u1ea7n v\u1edbi b\u00f3n ph\u00e2n 0,3 kg NPK \u0111\u1ea1t t\u1eeb 16,19 \u0111\u1ebfn 18,58 m3<\/sup>\/ha\/n\u0103m. K\u1ebft qu\u1ea3 n\u00e0y cho th\u1ea5y, n\u0103ng su\u1ea5t g\u1ed7 c\u1ee7a r\u1eebng tr\u1ed3ng Keo l\u00e1 tr\u00e0m \u1edf U\u00f4ng B\u00ed – Qu\u1ea3ng Ninh \u0111\u1ea1t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi c\u00e1c gi\u1ed1ng Keo l\u00e1 tr\u00e0m n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c tr\u1ed3ng \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda Nam v\u00e0 r\u1ea5t c\u00f3 tri\u1ec3n v\u1ecdng cho tr\u1ed3ng r\u1eebng cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf c\u00e1c t\u1ec9nh ph\u00eda B\u1eafc.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Keo l\u00e1 tr\u00e0m (Acacia auriculiformis<\/em>), tr\u1ed3ng r\u1eebng th\u00e2m canh, U\u00f4ng B\u00ed – Qu\u1ea3ng Ninh<\/td>\n<\/tr>\n

\n

<\/a>Effects of some intensive afforestation techniques to the growth and productivity of 36 – months – old Acacia auriculiformis<\/em> plantation in Uong Bi district, Quang Ninh province<\/strong><\/p>\n

The results of testing applied technical measures for intensive afforestation of Acacia auriculiformis<\/em> of Clt7 and Clt98 clone in Uong Bi, Quang Ninh in the period of 2016 – 2019 including vegetation treatment, soil preparation, fertilizing and planting density. Monitoring of these experiments after 36 months showed that the diameter at breast height (D1,3<\/sub>) of
\nA. auriculiformis<\/em> in the experiments reached from 8.76 to 10.11 cm, the total height (Hvn<\/sub>) reached 11.74 – 13.25 m and standing timber volume (M) from 48.58 to 56.31 m3<\/sup>\/ha, corresponding to the timber productivity (\u0394M) of 16.19 – 18.77 m3<\/sup>\/ha\/year. In these intensive measures, after 36 months, it was shown that the experiments on vegetation treatment and tending have not had a significant effect on the productivity of A. auriculiformis<\/em> plantation, while the experiments on soil preparation, fertilizing and planting density showed differences between experiments. After 36 months, A. auriculiformis<\/em>\u2019s highest yield was found in the hole digging formulas with dimensions of 40 \u00b4 40 \u00b4 40 cm, with basal dressing of 1 kg of Song Gianh compost and top dressing of 0.4 kg P2<\/sub>O5<\/sub> + 0.1 kg K2<\/sub>O in the first 2 years, with a density of 1,666 trees\/ha, the vegetation was treated by total clearing and spreading evenly, 3 times tending combined with 0.3 kg of NPK fertilizer, with the yeild from 16.19 to 18.58 m3<\/sup>\/ha\/year. These results showed that the productivity of A. auriculiformis<\/em> plantation in Uong Bi – Quang Ninh was similar to those of the same speices planted in some Southern provinces and is very promising for afforestation for sawlog supply in the Northern provinces.<\/p>\n

Keywords<\/em><\/strong>:<\/em><\/strong> Acacia auriculiformis, <\/em>intensive afforestation, Uong Bi district – Quang Ninh province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/a>\u0110\u1eb6C \u0110I\u1ec2M SINH TR\u01af\u1edeNG V\u00c0 SINH KH\u1ed0I C\u1ee6A R\u1eeaNG TR\u1ed2NG KEO TAI T\u01af\u1ee2NG 7 TU\u1ed4I T\u1ea0I Y\u00caN B\u00c1I<\/p>\n

<\/a>Nguy\u1ec5n V\u0103n B\u00edch1<\/sup>, Nguy\u1ec5n \u0110\u0103ng C\u01b0\u1eddng2<\/sup>, Cao Th\u1ecb Thu Hi\u1ec1n3<\/sup>, B\u00f9i M\u1ea1nh H\u01b0ng3<\/sup><\/p>\n

1<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Th\u00e1i Nguy\u00ean
\n3<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i Y\u00ean B\u00e1i nh\u1eb1m \u0111\u00e1nh gi\u00e1 m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 sinh kh\u1ed1i c\u1ee7a r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng 7 tu\u1ed5i. 16 \u00f4 ti\u00eau chu\u1ea9n \u0111i\u1ec3n h\u00ecnh (di\u1ec7n t\u00edch 750 m2<\/sup>) \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u00e0 30 c\u00e2y ti\u00eau chu\u1ea9n \u0111\u1ea1i di\u1ec7n cho 5 c\u1ea5p k\u00ednh c\u1ee7a r\u1eebng \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1eb7t h\u1ea1 \u0111\u1ec3 ph\u1ee5c v\u1ee5 nghi\u00ean c\u1ee9u. K\u1ebft qu\u1ea3 cho th\u1ea5y, r\u1eebng tr\u1ed3ng thu\u1ea7n lo\u00e0i Keo tai t\u01b0\u1ee3ng 7 tu\u1ed5i t\u1ea1i Y\u00ean B\u00e1i c\u00f3 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao b\u00ecnh qu\u00e2n l\u1ea7n l\u01b0\u1ee3t l\u00e0 13,2 \u00b1 0,23 cm v\u00e0 14,5 \u00b1 0,14 m; n\u0103ng su\u1ea5t r\u1eebng \u0111\u1ea1t trung b\u00ecnh 13,3 \u00b1 0,57 m3<\/sup>\/ha\/n\u0103m. M\u1eadt \u0111\u1ed9 r\u1eebng trung b\u00ecnh hi\u1ec7n t\u1ea1i l\u00e0 810 \u00b1 31 c\u00e2y\/ha, trong \u0111\u00f3 t\u1ef7 l\u1ec7 s\u1ed1 c\u00e2y c\u00f3 \u0111\u01b0\u1eddng k\u00ednh g\u1ed7 x\u1ebb (\u226515 cm) ch\u1ec9 chi\u1ebfm 37% t\u1ed5ng s\u1ed1 c\u00e2y c\u1ee7a l\u00e2m ph\u1ea7n. Sinh kh\u1ed1i c\u00e2y c\u00e1 l\u1ebb Keo tai t\u01b0\u1ee3ng t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf ph\u1ea7n th\u00e2n c\u00e2y (70%), ti\u1ebfp \u0111\u1ebfn l\u00e0 \u1edf v\u1ecf (15%), c\u00e0nh (11%) v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 l\u00e1 (4%). Sinh kh\u1ed1i b\u1ed9 ph\u1eadn c\u00e2y c\u00e1 l\u1ebb Keo tai t\u01b0\u1ee3ng c\u00f3 m\u1ed1i quan h\u1ec7 r\u1ea5t ch\u1eb7t ch\u1ebd v\u1edbi \u0111\u01b0\u1eddng k\u00ednh (D1,3<\/sub>) c\u1ee7a c\u00e2y (R2<\/sup><\/em> ~ 0,81\u00f70,97, P_value<\/sub><\/em> < 0,0001). T\u1ed5ng sinh kh\u1ed1i c\u1ee7a l\u00e2m ph\u1ea7n Keo tai t\u01b0\u1ee3ng \u1edf tu\u1ed5i khai th\u00e1c \u0111\u1ea1t trung b\u00ecnh 69,9 \u00b1 2,6 t\u1ea5n\/ha, trong \u0111\u00f3 sinh kh\u1ed1i t\u1ea7ng c\u00e2y cao chi\u1ebfm 86%, v\u1eadt r\u01a1i r\u1ee5ng chi\u1ebfm 8,5% v\u00e0 c\u00e2y b\u1ee5i th\u1ea3m t\u01b0\u01a1i chi\u1ebfm 4,8% t\u1ed5ng sinh kh\u1ed1i c\u1ee7a l\u00e2m ph\u1ea7n. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 c\u01a1 s\u1edf khoa h\u1ecdc quan tr\u1ecdng nh\u1eb1m \u0111\u1ec1 xu\u1ea5t c\u00e1c gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p cho qu\u1ea3n l\u00fd r\u1eebng Keo tai t\u01b0\u1ee3ng b\u1ec1n v\u1eefng t\u1ea1i Y\u00ean B\u00e1i n\u00f3i ri\u00eang v\u00e0 Vi\u1ec7t Nam n\u00f3i chung.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Keo tai t\u01b0\u1ee3ng, sinh tr\u01b0\u1edfng, sinh kh\u1ed1i, 7 tu\u1ed5i<\/td>\n<\/tr>\n

\n

<\/a>Growth and biomass characteristics of a 7 – years old Acacia mangium <\/em>plantation in Yen Bai province<\/strong><\/p>\n

The study was conducted in Yen Bai province to evaluate some characteristics of growth and biomass of Acacia mangium<\/em> at 7 years old. 16 sample plots (each covering 750 m2<\/sup>) were established and 30 sample trees representing for 5 diameter classes of the forest were cut down for this research. The results showed that, at 7 years old, the average diameter and height of Acacia mangium<\/em> plantation in Yen Bai were 13.2 \u00b1 0.23 cm and 14.5 \u00b1 0.14 m respectively; average forest productivity was 13.3 \u00b1 0.57 m3<\/sup>ha-1<\/sup>year-1<\/sup>. The current average density of forests is 810 \u00b1 31 trees\/ha, of which the percentage of trees with sawn timber diameter (\u226515 cm) accounts for only 37% of the total number of trees in the stand. Biomass of individuals of Acacia mangium<\/em> is concentrated mainly on the trunk (70%), followed by the bark (15%), branches (11%) and the lowest was leaves (4%). The biomass of individual Acacia mangium <\/em>has a closed correlation with the diameter (D1,3<\/sub>) of the tree (R2<\/sup> ~ 0.81 \u00f7 0.97, P_<\/em>value <0.0001). The total biomass of Acacia mangium<\/em> plantation at 7 years old reached an average of 69.9 \u00b1 2.6 tons\/ha, of which biomass of A. mangium <\/em>stand accounted for 86%, litterfall accounted for 8.5% and understory vegetation accounted for 4.8% of the total biomass of the stand. The results of this study are an important scientific basis to propose suitable silvicultural solutions for sustainable management of Acacia mangium<\/em> plantation in Yen Bai in particular and Vietnam in general.<\/p>\n

Keywords:<\/em><\/strong> Acacia mangium<\/em>, growth, biomass, 7 years old<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>SINH TR\u01af\u1edeNG V\u00c0 M\u1ed8T S\u1ed0 T\u00cdNH CH\u1ea4T G\u1ed6 C\u1ee6A B\u1ea0CH \u0110\u00c0N LAI GI\u1eeeA B\u1ea0CH \u0110\u00c0N UR\u00d4 V\u1edaI C\u00c1C LO\u00c0I B\u1ea0CH \u0110\u00c0N KH\u00c1C
\nTRONG KH\u1ea2O NGHI\u1ec6M T\u1ed4 H\u1ee2P LAI T\u1ea0I BA V\u00cc<\/p>\n

<\/a>Nguy\u1ec5n H\u1eefu S\u1ef91<\/sup>, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean1<\/sup>, H\u00e0 Huy Th\u1ecbnh2<\/sup>, Ng\u00f4 V\u0103n Ch\u00ednh1<\/sup>,
\nNguy\u1ec5n Qu\u1ed1c To\u1ea3n1<\/sup>, Tr\u1ea7n Th\u1ecb Thanh Th\u00f9y1<\/sup>, Tr\u1ea7n Duy H\u01b0ng1<\/sup><\/p>\n

1<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc L\u00e2m nghi\u1ec7p
\n2<\/sup> H\u1ed9i Khoa h\u1ecdc K\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t g\u1ed7 c\u1ee7a c\u00e1c t\u1ed5 h\u1ee3p lai gi\u1eefa B\u1ea1ch \u0111\u00e0n ur\u00f4 (c\u00e2y m\u1eb9) v\u00e0 c\u00e1c lo\u00e0i kh\u00e1c l\u00e0 pelita, camal v\u00e0 grandis \u0111\u1ec3 t\u1eeb \u0111\u00f3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng t\u1ed5 h\u1ee3p c\u1ee7a B\u1ea1ch \u0111\u00e0n ur\u00f4 v\u1edbi c\u00e1c lo\u00e0i kh\u00e1c l\u00e0m c\u01a1 s\u1edf cho nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o gi\u1ed1ng b\u1ea1ch \u0111\u00e0n lai c\u00f3 n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao trong th\u1eddi gian t\u1edbi. Kh\u1ea3o nghi\u1ec7m \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp n\u0103m 2014 t\u1ea1i Ba V\u00ec bao g\u1ed3m 27 t\u1ed5 h\u1ee3p b\u1ea1ch \u0111\u00e0n lai UP, UG v\u00e0 UC; 03 \u0111\u1ed1i ch\u1ee9ng c\u00e2y h\u1ea1t l\u00e0 B\u1ea1ch \u0111\u00e0n pelita, camal v\u00e0 grandis. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u1edf 3 n\u0103m tu\u1ed5i cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u1ea5t r\u00f5 r\u1ec7t gi\u1eefa c\u00e1c t\u1ed5 h\u1ee3p lai v\u1ec1 sinh tr\u01b0\u1edfng, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y, kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u01a1 b\u1ea3n g\u1ed7 v\u00e0 m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i. Tuy nhi\u00ean, gi\u1eefa c\u00e1c nh\u00f3m t\u1ed5 h\u1ee3p lai UP, UC v\u00e0 UG kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t v\u1ec1 c\u00e1c ch\u1ec9 ti\u00eau \u0111\u00e1nh gi\u00e1. C\u00e1c t\u1ed5 h\u1ee3p lai c\u00f3 sinh tr\u01b0\u1edfng \u0111\u1ea1t t\u1eeb 21,8 \u0111\u1ebfn 55,6 dm3<\/sup> v\u1ec1 th\u1ec3 t\u00edch, c\u00e1c \u0111\u1ed1i ch\u1ee9ng ch\u1ec9 \u0111\u1ea1t cao nh\u1ea5t l\u00e0 19,4 dm3<\/sup> v\u1edbi B\u1ea1ch \u0111\u00e0n camal, B\u1ea1ch \u0111\u00e0n grandis ch\u1ec9 \u0111\u1ea1t 13,0 dm3<\/sup>. C\u00e2y m\u1eb9 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c t\u1ed5 h\u1ee3p lai m\u1ed9t c\u00e1ch r\u00f5 r\u1ec7t. Trong 10 t\u1ed5 h\u1ee3p lai c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t, c\u00e2y m\u1eb9 U1028 \u0111\u00f3ng g\u00f3p 6 t\u1ed5 h\u1ee3p, c\u00e2y m\u1eb9 U1021 \u0111\u00f3ng g\u00f3p 2 t\u1ed5 h\u1ee3p trong kh\u1ea3o nghi\u1ec7m. M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i (\u0111\u00e1nh gi\u00e1 gi\u00e1n ti\u1ebfp b\u1eb1ng Fakopp) dao \u0111\u1ed9ng trong kho\u1ea3ng 11,60 \u0111\u1ebfn 15,68 GPa. Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a g\u1ed7 dao \u0111\u1ed9ng t\u1eeb 0,44 \u0111\u1ebfn 0,53 g\/cm3<\/sup>. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 c\u01a1 s\u1edf ch\u1ecdn l\u1ecdc c\u00e1c t\u1ed5 h\u1ee3p v\u00e0 d\u00f2ng b\u1ea1ch \u0111\u00e0n lai c\u00f3 sinh tr\u01b0\u1edfng nhanh k\u1ebft h\u1ee3p t\u00ednh ch\u1ea5t g\u1ed7 t\u1ed1t \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t trong t\u01b0\u01a1ng lai.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea1ch \u0111\u00e0n ur\u00f4, lai gi\u1ed1ng, sinh tr\u01b0\u1edfng, t\u1ef7 tr\u1ecdng g\u1ed7, m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i<\/td>\n<\/tr>\n

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<\/a>Growth, wood basic density and modulus of elasticity of hybrid combinations between Eucalyptus urophylla<\/em> and other species at Ba Vi<\/strong><\/p>\n

The objective of this study was to determine the growth and wood properties of hybrid combinations between Eucalyptus urophylla<\/em> (mother tree – U) with E. pellita <\/em>(P), E. camaldulensis<\/em> (C) and E. grandis <\/em>(G). In order to evaluate the possible combinations of E. urophylla<\/em> with such species as a basis for the further studies of breeding high productivity and quality Eucalyptus hybrids. Trial was established at Ba Vi in 2014, consisting of 27 hybrid combinations UP, UC and UG; 03 control mother bulk seedlots E. pellita, E. camaldulensis, <\/em>and E. grandis<\/em>. The results after three years showed statistically significant differences among hybrid combinations in growth, tree forms, basic density and modulus of elasticity. Nonetheless, there were no significant differences between hybrid combination groups UP, UC and UG. Stem volume of hybrid combinations ranged from 21.8 to 55.6 dm3<\/sup> while the best control (E. camaldulesis) <\/em>only reached 19.4 dm3<\/sup>, and E. grandis<\/em> was the poorest which only reached 13.0 dm3<\/sup>. The mother trees significantly affected the growth of hybrid combinations. Of the 10 hybrids with the best growth, the U1028 mother tree contributed 6 combinations, the U1021 mother tree contributed 2 combinations in the trial. Modulus of elasticity (indirectly measured by Fakopp equipment) ranged from 11.60 to 15.68 GPa. Wood basic density ranged from 0.44 to 0.53 g\/cm3<\/sup>. The results of this study are the basis for selecting fast – growing Eucalyptus <\/em>hybrid combinations and clones combining better wood properties for further production forest plantations.<\/p>\n

Keywords:<\/em><\/strong> Eucalyptus urophylla<\/em>, hybridization, growth, wood basic density, modulus of elasticity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A BI\u1ebeN \u0110\u1ed4I KH\u00cd H\u1eacU \u0110\u1ebeN B\u1ec0 R\u1ed8NG V\u00d2NG N\u0102M TH\u00d4NG 5 L\u00c1 (Pinus dalatensis<\/em> Ferr\u00e9) \u1ede T\u00c2Y NGUY\u00caN<\/p>\n

<\/a>L\u00ea C\u1ea3nh Nam1<\/sup>, B\u00f9i Th\u1ebf Ho\u00e0ng2<\/sup>, Tr\u01b0\u01a1ng Quang C\u01b0\u1eddng2<\/sup>, B\u1ea3o Huy3<\/sup><\/p>\n

1 <\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean
\n2<\/sup> V\u01b0\u1eddn Qu\u1ed1c gia Bidoup N\u00fai B\u00e0, t\u1ec9nh L\u00e2m \u0110\u1ed3ng
\n\u00a0<\/sup>3<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc T\u00e2y Nguy\u00ean<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Th\u00f4ng 5 l\u00e1 (Pinus dalatensis<\/em> Ferr\u00e9) l\u00e0 lo\u00e0i \u0111\u1eb7c h\u1eefu c\u1ee7a d\u00e3y Tr\u01b0\u1eddng S\u01a1n, c\u00f3 ph\u00e2n b\u1ed1 t\u1eadp trung \u1edf T\u00e2y Nguy\u00ean trong ki\u1ec3u r\u1eebng h\u1ed7n giao c\u00e2y l\u00e1 r\u1ed9ng l\u00e1 kim. Nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m m\u1ee5c \u0111\u00edch ph\u00e1t hi\u1ec7n v\u00e0 l\u01b0\u1ee3ng h\u00f3a \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 kh\u00ed h\u1eadu v\u00e0 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu \u0111\u1ebfn t\u0103ng tr\u01b0\u1edfng b\u1ec1 r\u1ed9ng v\u00f2ng n\u0103m lo\u00e0i Th\u00f4ng 5 l\u00e1 theo t\u1eebng v\u00f9ng ph\u00e2n b\u1ed1 sinh th\u00e1i t\u1ea1i T\u00e2y Nguy\u00ean. S\u1ed1 li\u1ec7u b\u1ec1 r\u1ed9ng v\u00f2ng n\u0103m \u0111\u01b0\u1ee3c thu th\u1eadp b\u1eb1ng khoan t\u0103ng tr\u01b0\u1edfng Haglof t\u1eeb 56 c\u00e2y m\u1eabu r\u1ea3i \u1edf c\u00e1c c\u1ea5p k\u00ednh tr\u00ean ba v\u00f9ng n\u00fai Bidoup N\u00fai B\u00e0, Ch\u01b0 Yang Sin v\u00e0 Kon Ka Kinh t\u1ea1i T\u00e2y Nguy\u00ean; b\u1ec1 r\u1ed9ng v\u00f2ng n\u0103m \u0111\u01b0\u1ee3c g\u1eafn v\u1edbi d\u1eef li\u1ec7u kh\u00ed h\u1eadu trong v\u00f2ng 32-38 n\u0103m trong giai \u0111o\u1ea1n (1979 – 2017) \u1edf ba v\u00f9ng ph\u00e2n b\u1ed1. S\u1eed d\u1ee5ng m\u00f4 h\u00ecnh tuy\u1ebfn t\u00ednh\/phi tuy\u1ebfn t\u00ednh c\u00f3 tr\u1ecdng s\u1ed1 \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 m\u00f4 h\u00ecnh h\u00f3a \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 kh\u00ed h\u1eadu \u0111\u1ebfn \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m. K\u1ebft qu\u1ea3 cho th\u1ea5y t\u1ea1i v\u00f9ng Bidoup N\u00fai B\u00e0, t\u0103ng tr\u01b0\u1edfng b\u1ec1 r\u1ed9ng v\u00f2ng n\u0103m Th\u00f4ng 5 l\u00e1 c\u00f3 quan h\u1ec7 thu\u1eadn v\u1edbi nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh th\u00e1ng 6, quan h\u1ec7 ngh\u1ecbch v\u1edbi l\u01b0\u1ee3ng m\u01b0a th\u00e1ng 11; v\u00f9ng Ch\u01b0 Yang Sin, t\u0103ng tr\u01b0\u1edfng v\u1ec1 b\u1ec1 r\u1ed9ng v\u00f2ng n\u0103m c\u00f3 quan h\u1ec7 ngh\u1ecbch v\u1edbi nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh th\u00e1ng 3 v\u00e0 th\u00e1ng 4; v\u00f9ng Kon Ka Kinh, t\u0103ng tr\u01b0\u1edfng b\u1ec1 r\u1ed9ng v\u00f2ng n\u0103m quan h\u1ec7 ngh\u1ecbch v\u1edbi nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh th\u00e1ng 4. K\u1ebft qu\u1ea3 ch\u1ec9 ra c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu trong v\u00f9ng T\u00e2y Nguy\u00ean tr\u00ean 30 n\u0103m qua, nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh n\u0103m t\u0103ng kho\u1ea3ng 1o<\/sup>C v\u00e0 l\u00e0m suy gi\u1ea3m sinh tr\u01b0\u1edfng Th\u00f4ng 5 l\u00e1.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Kh\u00ed h\u1eadu, t\u0103ng tr\u01b0\u1edfng v\u00f2ng n\u0103m, th\u00f4ng \u0110\u00e0 L\u1ea1t<\/td>\n<\/tr>\n

\n

<\/a>The impact of climatic change on tree-ring width of Pinus dalatensis<\/em> Ferr\u00e9 in the Central Highlands of Vietnam<\/strong><\/p>\n

Pinus dalatensis <\/em>Ferr\u00e9, <\/em>an endemic species to Annamite range, is mainly distributed in the mixed broad-leaved and coniferous forests in the Central Highlands of Vietnam. The objective of this study was to identify the impacts of climatic factors and climate change on the tree ring width of Pinus dalatensis<\/em> at main different sites of the Central Highlands. The dataset of tree-ring width was collected from 56 sampled trees by using a Haglof increment borer incorporated into the climatic dataset in 32-38 years (1979-2016) at 3 different sites in National Parks of Bidoup Nui Ba, Ch\u01b0 Yang Sin, and Kon Ka Kinh. Weighted Linear\/Nonlinear methods were applied for modeling regressions of tree-ring width and climatic factors. As a result, at Bidoup Nui Ba site, Pinus dalatensis<\/em>‘s annual tree-ring width increment was positive with the average monthly temperature of June and negative with November rainfall; at Chu Yang Sin site, it was negative with the average monthly temperatures of March and April, and at Kon Ka Kinh site, it was negative with the average monthly temperature of April. The study also indicated that there was a climate change in the Central Highlands over the past 30 years, the average annual temperature increased approximately by one degree Celsius that made the decrease in the growth of Pinus dalatensis<\/em>.<\/p>\n

Keywords:<\/em><\/strong> Climate change, Da Lat pine, tree-ring width<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M H\u00ccNH TH\u00c1I V\u00c0 C\u1ea4U T\u1ea0O GI\u1ea2I PH\u1eaaU LO\u00c0I TAM TH\u1ea4T G\u1eeaNG (Stahlianthus thorelii<\/em> Gagnep) TR\u1ed2NG T\u1ea0I HUY\u1ec6N BA V\u00cc, H\u00c0 N\u1ed8I<\/p>\n

<\/a>L\u00ea V\u0103n Quang1<\/sup>, Tr\u1ea7n Ng\u1ecdc H\u1ea3i2<\/sup>, Ho\u00e0ng Li\u00ean S\u01a1n3<\/sup><\/p>\n

1 <\/sup>Trung t\u00e2m Nghi\u00ean c\u1ee9u v\u00e0 Chuy\u1ec3n giao k\u1ef9 thu\u1eadt l\u00e2m sinh
\n2 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p
\n3<\/sup> Chi c\u1ee5c Ki\u1ec3m l\u00e2m t\u1ec9nh Y\u00ean B\u00e1i<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Tam th\u1ea5t g\u1eebng (Stahlianthus thorelii <\/em>Gagnep) l\u00e0 c\u00e2y th\u00e2n th\u1ea3o, th\u00e2n r\u1ec5 d\u00e0y mang nhi\u1ec1u c\u1ee7 nh\u1ecf b\u1eb1ng qu\u1ea3 tr\u1ee9ng chim x\u1ebfp th\u00e0nh chu\u1ed7i, r\u1ec5 con d\u1ea1ng s\u01a1. L\u00e1 m\u1ecdc r\u1eddi, 3 – 5 c\u00e1i, cu\u1ed1ng l\u00e1 d\u00e0i 10 – 15 cm, phi\u1ebfn thu\u00f4n d\u00e0i, ch\u00f3p nh\u1ecdn, m\u00e0u xanh l\u1ee5c, l\u1ee5c pha n\u00e2u t\u00edm, m\u00e9p nguy\u00ean, d\u00e0i 20 – 25 cm, r\u1ed9ng 3 – 5 cm. C\u1ee5m hoa m\u1ecdc \u1edf g\u1ed1c g\u1ed3m 1 l\u00e1 b\u1eafc h\u00ecnh \u1ed1ng 3 – 3,5 cm, th\u1eaft l\u1ea1i \u1edf 2 \u0111\u1ea7u r\u1ed3i ph\u00e2n hai th\u00f9y r\u1ed9ng, trong c\u00f3 4 – 5 hoa m\u00e0u tr\u1eafng, h\u1ecdng v\u00e0ng. Hoa xu\u1ea5t hi\u1ec7n sau khi c\u00e2y ra l\u00e1. C\u1ee7 non m\u00e0u tr\u1eafng v\u00e0ng, c\u1ee7 gi\u00e0 m\u00e0u n\u00e2u x\u00e1m, c\u00f3 nhi\u1ec1u ng\u1ea5n ngang, c\u1ee7 nh\u1ecf, \u0111\u01b0\u1eddng k\u00ednh th\u01b0\u1eddng nh\u1ecf h\u01a1n 1,5 cm. Tam th\u1ea5t g\u1eebng l\u00e0 c\u00e2y ch\u1ecbu b\u00f3ng (t\u1ef7 l\u1ec7 m\u00f4 \u0111\u1ed3ng h\u00f3a\/b\u1ec1 d\u00e0y l\u00e1 trung b\u00ecnh \u0111\u1ea1t 37,86%, t\u1ef7 l\u1ec7 di\u1ec7p l\u1ee5c a\/b b\u1eb1ng 1,8558) n\u00ean c\u00f3 th\u1ec3 tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng ho\u1eb7c v\u01b0\u1eddn c\u00e2y \u0103n qu\u1ea3, v\u01b0\u1eddn r\u1eebng \u0111\u1ec3 t\u0103ng thu nh\u1eadp v\u00e0 t\u1eadn d\u1ee5ng \u0111\u1ea5t \u0111ai.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, c\u1ea5u t\u1ea1o gi\u1ea3i ph\u1eabu, Tam th\u1ea5t g\u1eebng, huy\u1ec7n Ba V\u00ec<\/td>\n<\/tr>\n

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<\/a>Morphological characteristics and anatomical structure of Stahlianthus thorelii<\/em> Gagnep growing in Ba Vi district, Ha Noi city<\/strong><\/p>\n

Stahlianthus thorelii<\/em> Gagnep is a herbaceous plant, thick rhizome bearing many small tubers with bird eggs arranged in chains, small roots. Leaves grow loose, 3 – 5 pieces, 10 – 15 cm long petioles, oblong, pointed tip, green, purple – brown mixed phase, raw edges, 20 – 25 cm long, 3 – 5 cm wide. The inflorescence at the base consists of a 3 – 3.5 cm tubular bracts, tied at both ends and then divided into two broad lobes, of which there are 4 – 5 white flowers, yellow throat. Flowers appear after the tree leaves. Young tubers are yellowish – white, old with gray – brown, with horizontal rows, small tubers are usually smaller than 1.5 cm in diameter. Ginger is a shade tolerant tree (the rate of anabolic tissue\/leaf thickness averages 37.86%, a\/b chlorophyll ratio is 1.8558), so it can be grown under forest canopy or orchard, forest gardens to increase income and make use of land.<\/p>\n

Keywords:<\/em><\/strong> Morphological characteristics, anatomical structure, Stahlianthus thorelii<\/em> Gagnep, Ba Vi district<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC C\u1ee6A C\u00c2Y \u01af\u01a0I (Scaphium macropodum<\/em> (Miq.) Beum\u00e9e ex K.Heyne) \u1ede M\u1ed8T S\u1ed0 T\u1ec8NH V\u00d9NG NAM TRUNG B\u1ed8<\/p>\n

<\/a>Nguy\u1ec5n H\u1eefu Th\u1ecbnh, Ph\u1ea1m \u0110\u00ecnh S\u00e2m, H\u1ed3 Trung L\u01b0\u01a1ng,
\nD\u01b0\u01a1ng Quang Trung, Ho\u00e0ng Thanh S\u01a1n<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a c\u00e2y \u01af\u01a1i t\u1ea1i Nam Trung B\u1ed9 cho th\u1ea5y, \u01af\u01a1i c\u00f3 ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean trong c\u1ea3 3 tr\u1ea1ng th\u00e1i r\u1eebng gi\u00e0u, trung b\u00ecnh v\u00e0 ngh\u00e8o. \u01af\u01a1i th\u00edch h\u1ee3p kh\u00ed h\u1eadu \u1ea5m v\u00e0 \u1ea9m, trong \u0111i\u1ec1u ki\u1ec7n th\u1ea3m th\u1ef1c v\u1eadt c\u00f2n kh\u00e1 t\u1ed1t, c\u00f3 t\u1ea7ng c\u00e2y g\u1ed7 v\u01b0\u1ee3t t\u00e1n. C\u00e2y \u01af\u01a1i c\u00f3 ph\u00e2n b\u1ed1 tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ecba h\u00ecnh t\u1eeb b\u1eb1ng ph\u1eb3ng \u0111\u1ebfn nh\u1eefng n\u01a1i c\u00f3 \u0111\u1ed9 d\u1ed1c cao nh\u01b0 \u1edf c\u00e1c s\u01b0\u1eddn n\u00fai; nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m 23 – 26o<\/sup>C, l\u01b0\u1ee3ng m\u01b0a l\u1edbn (> 2.000 mm\/n\u0103m). \u01af\u01a1i \u01b0a \u0111\u1ea5t t\u1ed1t, t\u01a1i x\u1ed1p, tho\u00e1t n\u01b0\u1edbc t\u1ed1t, \u0111\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t kh\u00e1 cao (> 80 cm), \u00edt \u0111\u00e1 l\u1eabn; n\u01a1i c\u00f3 h\u00e0m l\u01b0\u1ee3ng m\u00f9n v\u00e0 \u0111\u1ea1m cao (3 – 4%), th\u00edch nghi v\u1edbi c\u00e1c lo\u1ea1i \u0111\u1ea5t c\u00f3 \u0111\u1ed9 pH th\u1ea5p (< 4). M\u1eadt \u0111\u1ed9 t\u1ea7ng c\u00e2y cao trong c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng c\u00f3 \u01af\u01a1i ph\u00e2n b\u1ed1 bi\u1ebfn \u0111\u1ed9ng kh\u00e1 l\u1edbn dao \u0111\u1ed9ng t\u1eeb 650 c\u00e2y\/ha t\u1ea1i tr\u1ea1ng th\u00e1i r\u1eebng ngh\u00e8o \u0111\u1ebfn 1.167 c\u00e2y\/ha trong tr\u1ea1ng th\u00e1i r\u1eebng gi\u00e0u, tr\u1eef l\u01b0\u1ee3ng dao \u0111\u1ed9ng \u1edf 70,00 m3<\/sup>\/ha \u0111\u1ebfn 370 m3<\/sup>\/ha. S\u1ef1 tham gia c\u1ee7a lo\u00e0i \u01af\u01a1i v\u00e0o t\u1ed5 th\u00e0nh r\u1eebng l\u00e0 kh\u00f4ng r\u00f5 r\u1ec7t. H\u1ea7u h\u1ebft c\u00e1c c\u00e2y \u01af\u01a1i \u0111\u01b0\u1ee3c \u0111i\u1ec1u tra \u0111\u1ec1u c\u00f3 ph\u1ea9m ch\u1ea5t t\u1ed1t. M\u1eadt \u0111\u1ed9 c\u00e2y \u01af\u01a1i ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u \u1edf 3 tr\u1ea1ng th\u00e1i. \u01af\u01a1i t\u00e1i sinh ho\u00e0n to\u00e0n b\u1eb1ng h\u1ea1t v\u00e0 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng kh\u00e1 t\u1ed1t, 100% c\u00e2y \u01af\u01a1i t\u00e1i sinh c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t. T\u1ef7 l\u1ec7 c\u00e2y \u01af\u01a1i t\u00e1i sinh c\u00f3 chi\u1ec1u cao d\u01b0\u1edbi 50 cm chi\u1ebfm 67,68%, t\u1ef7 l\u1ec7 c\u00e2y \u01af\u01a1i t\u00e1i sinh tri\u1ec3n v\u1ecdng chi\u1ebfm t\u1ef7 l\u1ec7 th\u1ea5p 10,71%.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> L\u00e2m h\u1ecdc, Nam Trung B\u1ed9, \u01af\u01a1i<\/td>\n<\/tr>\n

\n

<\/a>Silvicultural characteristics of Scaphium macropodum<\/em> (Miq.) Beum\u00e9e ex K.Heyne in some provinces of Southern Central Coast Region<\/strong><\/p>\n

The research results of some silvicultural characteristics of Scaphium macropodum<\/em> in the Southern Central Coast Region showed that the species has a natural distribution in rich, medium, and poor forest types. It was suitable for warm and humid climate conditions, with the present of good vegetation, emergent layer. The tree was well adapted to all types of terrain from flat to high slopes especially mountain sides; the average annual temperature of 23 – 26o<\/sup>C, heavy rainfall (> 2,000 mm\/year). It also prefered good, porous, well drained, deep soil layer (> 80 cm), few mixed stone; high humus and nitrogen content (3 – 4%), adapted to low pH soils (< 4). The density of canopy layer varied quite widely, ranging from 650 trees\/ha in poor forest to 1,167 trees\/ha in rich forest, total volume ranged from 70.00 m3<\/sup>\/ha to 370 m3<\/sup>\/ha. The participation of Scaphium macropodum<\/em> in the forest composition was not clear. Most surveyed individuals had good quality. Tree density was not uniform in 3 forest types. Scaphium macropodum<\/em>\u2019s seedlings regenerated entirely by seeds and had quite high quality with the percentage of high – quality regenerated trees reaching 100%. The ratio of individuals with the height of 50 cm or less accounted for proportion 67.68%, the percentage of prospective regenerated trees was low at only 10.71%.<\/p>\n

Keywords:<\/em><\/strong> Silviculture, Southern Central Coast Region, Scaphium macropodum<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>QUAN H\u1ec6 C\u1ee6A XOAN \u0110\u00c0O V\u1edaI C\u00c1C LO\u00c0I C\u00c2Y KH\u00c1C TRONG R\u1eeaNG T\u1ef0 NHI\u00caN \u1ede M\u1ed8T S\u1ed0 T\u1ec8NH PH\u00cdA B\u1eaeC<\/p>\n

<\/a>Ho\u00e0ng V\u0103n Th\u1eafng<\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u m\u1ed1i quan h\u1ec7 c\u1ee7a Xoan \u0111\u00e0o v\u1edbi c\u00e1c lo\u00e0i c\u00e2y g\u1ed7 trong b\u1ed1n tr\u1ea1ng th\u00e1i r\u1eebng t\u1ef1 nhi\u00ean IIA, IIB, IIIA2 v\u00e0 IIIA3 \u1edf b\u1ed1n t\u1ec9nh B\u1eafc Giang, Tuy\u00ean Quang, H\u00f2a B\u00ecnh v\u00e0 S\u01a1n La cho th\u1ea5y, Xoan \u0111\u00e0o c\u00f3 quan h\u1ec7 v\u1edbi c\u00e1c lo\u00e0i c\u00e2y r\u1eebng theo c\u1ea3 3 d\u1ea1ng g\u1ed3m quan h\u1ec7 \u0111\u1ed9c l\u1eadp, quan h\u1ec7 t\u01b0\u01a1ng t\u00e1c d\u01b0\u01a1ng v\u00e0 quan h\u1ec7 t\u01b0\u01a1ng t\u00e1c \u00e2m, trong \u0111\u00f3 ch\u1ec9 c\u00f3 8 lo\u00e0i c\u00f3 quan h\u1ec7 \u0111\u1ed9c l\u1eadp v\u1edbi Xoan \u0111\u00e0o, 34 – 86 lo\u00e0i c\u00f3 t\u01b0\u01a1ng t\u00e1c d\u01b0\u01a1ng v\u1edbi Xoan \u0111\u00e0o \u1edf 2 m\u1ee9c \u0111\u1ed9 (t\u01b0\u01a1ng t\u00e1c d\u01b0\u01a1ng y\u1ebfu v\u00e0 trung b\u00ecnh) v\u00e0 c\u00f3 94 – 238 lo\u00e0i c\u00f3 t\u01b0\u01a1ng t\u00e1c \u00e2m v\u1edbi Xoan \u0111\u00e0o (\u1edf ba m\u1ee9c \u0111\u1ed9 l\u00e0 y\u1ebfu, trung b\u00ecnh v\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i ch\u1eb7t). C\u00e1c lo\u00e0i c\u00f3 t\u01b0\u01a1ng t\u00e1c d\u01b0\u01a1ng v\u1edbi Xoan \u0111\u00e0o \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong tr\u1ed3ng r\u1eebng \u1edf c\u00e1c t\u1ec9nh bao g\u1ed3m Tr\u00e1m tr\u1eafng, Tr\u00e1m \u0111en, D\u1ebb \u0111\u1ecf, D\u1ebb gai, S\u1ed3i ph\u1ea3ng, Xoan nh\u1eeb, V\u1ed1i thu\u1ed1c, V\u1ea1ng tr\u1ee9ng, Kh\u00e1o v\u00e0ng, Ch\u00f2 n\u00e2u, Qu\u1ebf, B\u1ed3 \u0111\u1ec1, S\u1ebfn m\u1eadt, Kh\u00e1o v\u00e0ng, Re g\u1eebng, M\u1ee1, Thanh th\u1ea5t, G\u00e1o tr\u1eafng. \u0110\u00e2y l\u00e0 c\u00e1c lo\u00e0i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf, c\u00f3 tri\u1ec3n v\u1ecdng cho l\u1ef1a ch\u1ecdn lo\u00e0i c\u00e2y tr\u1ed3ng h\u1ed7n giao v\u1edbi Xoan \u0111\u00e0o theo h\u01b0\u1edbng cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf n\u01b0\u1edbc ta.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Xoan \u0111\u00e0o, m\u1ed1i quan h\u1ec7, r\u1eebng t\u1ef1 nhi\u00ean, ph\u00eda B\u1eafc Vi\u1ec7t Nam<\/td>\n<\/tr>\n

\n

<\/a>Study of relationship between Prunus arborea<\/em> (Blume) Kalkman with other species in natural forest in some Northern provinces<\/strong><\/p>\n

Research on relationship between Prunus arborea<\/em> (Blume) Kalkman and other tree species was conducted in four natural forest status IIA, IIB, IIIA2 and IIIA3 in four provinces: Bac Giang, Tuyen Quang, Hoa Binh and Son La. The results indicated that P. arborea<\/em> are related with timber species in all three forms including independent relations, positive relationships and negative interactions, of which only 8 species have independent relationships with P. arborea<\/em>, 34 – 86 species have positive interaction with P. arborea<\/em> at 2 levels (weak and moderate) and 94 – 238 species have negative interaction with P. arborea<\/em> (at three levels degrees are weak, moderate and relatively tight). Species that have a positive interaction with P. arborea<\/em> that have been used in reforestation including Canarium album, Canarium tramdenum, Castanopsis ducampii, Castanopsis indica, Castanopsis cerebrina,<\/em> Choerospondias axillaris, Schima walichi, Endospermum chinense, Machilus thunbergii, Dipterocapus retusus, Cinnamomum cassia, Styrax tonkinensis, Madhuca pasquieri, Cinadenia paniculata, Cinnamomun obtusifolium, Mangglietia conifera, Ailanthus triphysa and Walsura elata<\/em>. These are species of high economic value, promising species for selecting to mixed plantaions with P. arborea<\/em> for timber supply in Vietnam.<\/p>\n

Keywords:<\/em><\/strong> Relationship, natural forest, Northern provinces of Vietnam, Prunus arborea <\/em>(Blume) Kalkman<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>S\u1eed d\u1ee5ng NMDS \u0111\u1ec3 nghi\u00ean c\u1ee9u xu h\u01b0\u1edbng trong t\u1ed5 th\u00e0nh lo\u00e0i c\u00e2y g\u1ed7 \u1edf Khu d\u1ef1 tr\u1eef sinh quy\u1ec3n \u0110\u1ed3ng Nai<\/strong><\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Thu\u1ef31<\/sup>, Tr\u1ea7n L\u00e2m \u0110\u1ed3ng1<\/sup>, Ho\u00e0ng Thanh S\u01a1n1<\/sup>, Tr\u1ecbnh Ng\u1ecdc Bon1<\/sup>,
\nNinh Vi\u1ec7t Kh\u01b0\u01a1ng1<\/sup>, Ph\u00f9ng \u0110\u00ecnh Trung1<\/sup>, Nguy\u1ec5n Th\u1ecb Thu Ph\u01b0\u01a1ng1<\/sup>, \u0110\u1ed7 Th\u1ecb Thanh H\u00e02<\/sup>,
\nTr\u1ea7n Ho\u00e0ng Qu\u00fd1<\/sup>, Nguy\u1ec5n V\u0103n Tu\u1ea5n1<\/sup>, D\u01b0\u01a1ng Quang Trung1<\/sup><\/p>\n

1 <\/sup><\/strong>Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2 <\/sup><\/strong>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Southern Cross University Australia<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ed9t v\u1ea5n \u0111\u1ec1 trong nghi\u00ean c\u1ee9u sinh th\u00e1i qu\u1ea7n x\u00e3 th\u1ef1c v\u1eadt r\u1eebng th\u01b0\u1eddng gi\u1ea3i quy\u1ebft l\u00e0 x\u00e1c \u0111\u1ecbnh s\u1ef1 t\u01b0\u01a1ng \u0111\u1ed3ng\/kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ed5 th\u00e0nh lo\u00e0i c\u1ee7a c\u00e1c qu\u1ea7n x\u00e3. V\u1ea5n \u0111\u1ec1 n\u00e0y th\u01b0\u1eddng g\u1eb7p trong c\u00e1c nghi\u00ean c\u1ee9u nh\u1eb1m \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c bi\u1ec7n ph\u00e1p t\u00e1c \u0111\u1ed9ng, ho\u1eb7c \u0111\u00e1nh gi\u00e1 s\u1ef1 thay \u0111\u1ed5i v\u1ec1 t\u1ed5 th\u00e0nh th\u1ef1c v\u1eadt theo th\u1eddi gian ph\u1ee5c h\u1ed3i, ho\u1eb7c \u0111\u01a1n gi\u1ea3n l\u00e0 so s\u00e1nh \u0111\u1eb7c \u0111i\u1ec3m v\u1ec1 t\u1ed5 th\u00e0nh qu\u1ea7n x\u00e3 th\u1ef1c v\u1eadt r\u1eebng \u1edf c\u00e1c khu v\u1ef1c nghi\u00ean c\u1ee9u. Cho \u0111\u1ebfn nay, trong l\u0129nh v\u1ef1c sinh th\u00e1i \u1edf Vi\u1ec7t Nam, ph\u01b0\u01a1ng ph\u00e1p v\u1eabn th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0 l\u1eadp c\u00e1c \u00f4 ti\u00eau chu\u1ea9n nghi\u00ean c\u1ee9u nh\u1eb1m m\u00f4 t\u1ea3, ph\u00e2n t\u00edch th\u00e0nh ph\u1ea7n lo\u00e0i theo c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh v\u00e0 so s\u00e1nh m\u1ed9t s\u1ed1 ch\u1ec9 ti\u00eau v\u1ec1 c\u1ea5u tr\u00fac, \u0111\u1ed9 \u0111a d\u1ea1ng \u1edf c\u00e1c \u00f4 ti\u00eau chu\u1ea9n (OTC). Tuy nhi\u00ean, vi\u1ec7c \u0111\u1ecbnh l\u01b0\u1ee3ng s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ed5 th\u00e0nh s\u1ebd r\u1ea5t kh\u00f3 th\u1ef1c hi\u1ec7n v\u1edbi c\u00e1c nghi\u00ean c\u1ee9u c\u00f3 s\u1ed1 l\u01b0\u1ee3ng OTC l\u1edbn. B\u00e0i b\u00e1o n\u00e0y tr\u00ecnh b\u00e0y vi\u1ec7c \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p NMDS (Non – metric Dimensional Scaling) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xu h\u01b0\u1edbng trong t\u1ed5 th\u00e0nh lo\u00e0i gi\u1eefa c\u00e1c OTC v\u00e0 ph\u00e2n t\u00edch xu h\u01b0\u1edbng n\u00e0y trong m\u1ed1i li\u00ean h\u1ec7 v\u1edbi m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng. B\u00e0i b\u00e1o s\u1eed d\u1ee5ng b\u1ed9 s\u1ed1 li\u1ec7u g\u1ed3m 253 OTC 1.000 m2<\/sup> \u0111\u01b0\u1ee3c thu th\u1eadp \u1edf Khu d\u1ef1 tr\u1eef Sinh quy\u1ec3n \u0110\u1ed3ng Nai trong giai \u0111o\u1ea1n 2015 – 2017 nh\u1eb1m minh ho\u1ea1 cho ph\u01b0\u01a1ng ph\u00e1p.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Non – metric Dimensional Scaling (NMDS), t\u1ed5 th\u00e0nh lo\u00e0i, sinh th\u00e1i r\u1eebng, Khu d\u1ef1 tr\u1eef Sinh quy\u1ec3n \u0110\u1ed3ng Nai (KDTSQ\u0110N)<\/td>\n<\/tr>\n

\n

<\/a>Using NMDS to study patterns of tree species composition in Dong Nai Biosphere Reserve<\/strong><\/p>\n

A common problem that studies in forest community ecology often address is to identify the similarities\/differences in the species compositions of different areas or following different silvicutural treatments and forest restoration techniques. To the present, most of the studies in community ecology in Vietnam have used study plots to characterize the species composition and describe the similarities\/differences among the plots with species composition formular. However, this method faces many challenges in identifying patterns for a large numbers of plots. This paper presents the application of Non – Metric Dimensional Scaling (NMDS) for identifying species – association patterns in community assembly among a large number of study plots. The identified pattern is then described with other environmental factors to reveal more information about the communities. To demonstrate the use of NMDS, we use 253 1,000 m2<\/sup> study plots that were established during 2015 – 2017 across the Dong Nai Biosphere Reserve.<\/p>\n

Keywords:<\/em><\/strong> Non – metric Dimensional Scaling (NMDS), species composition, forest ecology, Dong Nai Biosphere Reserve<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>B\u1ec6NH TH\u1ed0I QU\u1ea2 T\u00c1O M\u00c8O T\u1ea0I VI\u1ec6T NAM<\/p>\n

Ph\u1ea1m Quang Thu, L\u00ea V\u0103n B\u00ecnh, Nguy\u1ec5n Minh Ch\u00ed<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

T\u00e1o m\u00e8o l\u00e0 m\u1ed9t lo\u00e0i c\u00e2y \u0111\u1eb7c s\u1ea3n v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng ph\u1ed5 bi\u1ebfn \u1edf v\u00f9ng T\u00e2y B\u1eafc Vi\u1ec7t Nam. T\u1ed5ng di\u1ec7n t\u00edch tr\u1ed3ng T\u00e1o m\u00e8o \u0111\u1ea1t kho\u1ea3ng 3.200 ha, s\u1ea3n l\u01b0\u1ee3ng qu\u1ea3 \u0111\u1ea1t kho\u1ea3ng 6.500 t\u1ea5n m\u1ed7i n\u0103m. Tuy nhi\u00ean, hi\u1ec7n t\u01b0\u1ee3ng th\u1ed1i qu\u1ea3 kh\u00e1 ph\u1ed5 bi\u1ebfn, g\u00e2y thi\u1ec7t h\u1ea1i \u0111\u00e1ng k\u1ec3 cho ng\u01b0\u1eddi d\u00e2n. Nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m m\u00f4 t\u1ea3 tri\u1ec7u ch\u1ee9ng, th\u1eed t\u00ednh g\u00e2y b\u1ec7nh v\u00e0 x\u00e1c \u0111\u1ecbnh lo\u00e0i n\u1ea5m g\u00e2y th\u1ed1i qu\u1ea3 T\u00e1o m\u00e8o. K\u1ebft qu\u1ea3 ph\u00e2n l\u1eadp \u0111\u00e3 thu \u0111\u01b0\u1ee3c 21 ch\u1ee7ng n\u1ea5m t\u1eeb c\u00e1c m\u1eabu qu\u1ea3 th\u1ed1i, t\u00ednh g\u00e2y b\u1ec7nh c\u1ee7a c\u00e1c ch\u1ee7ng \u0111\u01b0\u1ee3c chia th\u00e0nh n\u0103m nh\u00f3m g\u1ed3m: g\u00e2y b\u1ec7nh r\u1ea5t m\u1ea1nh (5 ch\u1ee7ng), g\u00e2y b\u1ec7nh m\u1ea1nh (4 ch\u1ee7ng), g\u00e2y b\u1ec7nh trung b\u00ecnh (5 ch\u1ee7ng), g\u00e2y b\u1ec7nh y\u1ebfu (4 ch\u1ee7ng) v\u00e0 kh\u00f4ng g\u00e2y b\u1ec7nh (3 ch\u1ee7ng). Trong \u0111\u00f3 ch\u1ee7ng TM2 g\u00e2y b\u1ec7nh m\u1ea1nh nh\u1ea5t v\u00e0 g\u00e2y ra v\u1ebft b\u1ec7nh t\u01b0\u01a1ng t\u1ef1 nh\u01b0 nh\u1eefng qu\u1ea3 b\u1ecb th\u1ed1i t\u1ef1 nhi\u00ean. K\u1ebft qu\u1ea3 gi\u1ea3i tr\u00ecnh t\u1ef1 \u0111o\u1ea1n gen ITS1 v\u00e0 ITS2 b\u1eb1ng c\u1eb7p m\u1ed3i ITS1F v\u00e0 ITS4 \u0111\u00e3 x\u00e1c \u0111\u1ecbnh n\u1ea5m g\u00e2y b\u1ec7nh th\u1ed1i qu\u1ea3 T\u00e1o m\u00e8o l\u00e0 lo\u00e0i Colletotrichum siamense<\/em>. Nghi\u00ean c\u1ee9u n\u00e0y l\u1ea7n \u0111\u1ea7u ghi nh\u1eadn n\u1ea5m C. siamense<\/em> g\u00e2y th\u1ed1i qu\u1ea3 T\u00e1o m\u00e8o \u1edf Vi\u1ec7t Nam v\u00e0 g\u00e2y b\u1ec7nh ph\u1ed5 bi\u1ebfn tr\u00ean nhi\u1ec1u lo\u00e0i c\u00e2y tr\u1ed3ng v\u00e0 r\u1ea5t c\u1ea7n \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u ph\u00f2ng tr\u1eeb \u0111\u1ec3 h\u1ea1n ch\u1ebf thi\u1ec7t h\u1ea1i cho ng\u01b0\u1eddi d\u00e2n.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ec7nh th\u1ed1i qu\u1ea3, <\/em>Colletotrichum siamense<\/em>, T\u00e1o m\u00e8o, t\u00ednh g\u00e2y b\u1ec7nh<\/td>\n<\/tr>\n

\n

<\/a>Rot disease on Docynia indica<\/em> fruit in Vietnam<\/strong><\/p>\n

Docynia indica<\/em>, a special tree, has been cultivated widely in the Northwest of Vietnam. The area of D. indica<\/em> plantations is about 3,200 hectares, commercial harvesting yielded 6,500 tonnes of fruit per year. However, rot disease on D. indica<\/em> fruit is quite common, causing significant damage and looses. This study aims to describe the symptoms, pathogenicity and identify the pathogen that causes rot disease on D. indica<\/em> fruit. The twenty – one isolates of fungi associated with rotten fruits were isolated and the pathogenicity of those 21 isolates was divided into five groups including: very strong (5 isolates), strong (4 isolates), average (5 isolates), weak (4 isolates) and nil (3 isolates). In which isolate TM2 has the strongest pathogenicity and causes lesions similar to those of natural rotten fruit. Colletotrichum siamense<\/em> was identified as the fungus causing rot disease on D. indica<\/em> fruit by sequencing of ITS1 and ITS2 using primer pair ITS1F and ITS4. This is the first report of C. siamense<\/em> causing rot disease on D. indica<\/em> fruit in Vietnam, but they are recorded as pathogen in many plant species, so further research is needed to manage the disease.<\/p>\n

Keywords:<\/em><\/strong> Colletotrichum siamense<\/em>, Docynia indica<\/em>, pathogenicity, rot disease<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>HI\u1ec6N TR\u1ea0NG B\u1ec6NH CH\u1ebeT H\u00c9O R\u1eeaNG TR\u1ed2NG KEO T\u1ea0I T\u1ed4NG C\u00d4NG TY GI\u1ea4Y VI\u1ec6T NAM<\/p>\n

<\/a>Nguy\u1ec5n Minh Ch\u00ed1<\/sup>, Ph\u1ea1m Quang Thu1<\/sup>, Ph\u1ea1m \u0110\u1ee9c Huy2<\/sup>, Nguy\u1ec5n Tu\u1ea5n Anh2<\/sup><\/p>\n

1<\/sup> Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00e2y Nguy\u00ean li\u1ec7u Gi\u1ea5y, T\u1ed5ng C\u00f4ng ty Gi\u1ea5y Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

C\u00e1c lo\u00e0i keo l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00e2y tr\u1ed3ng r\u1eebng ch\u00ednh cung c\u1ea5p nguy\u00ean li\u1ec7u gi\u1ea5y, d\u0103m v\u00e0 g\u1ed7 x\u1ebb. Di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng keo \u1edf Vi\u1ec7t Nam \u0111\u1ebfn n\u0103m 2015 \u0111\u1ea1t h\u01a1n 1,3 tri\u1ec7u ha. Tuy nhi\u00ean, b\u1ec7nh ch\u1ebft h\u00e9o g\u00e2y h\u1ea1i r\u1eebng tr\u1ed3ng c\u00e1c lo\u00e0i keo c\u00f3 xu h\u01b0\u1edbng lan nhanh. Nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m x\u00e1c \u0111\u1ecbnh tri\u1ec7u ch\u1ee9ng, hi\u1ec7n tr\u1ea1ng, \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, \u0111\u1ecbnh lo\u1ea1i, t\u00ednh g\u00e2y b\u1ec7nh c\u1ee7a n\u1ea5m g\u00e2y ch\u1ebft h\u00e9o r\u1eebng tr\u1ed3ng keo lai v\u00e0 Keo tai t\u01b0\u1ee3ng t\u1ea1i T\u1ed5ng c\u00f4ng ty Gi\u1ea5y Vi\u1ec7t Nam. N\u1ea5m g\u00e2y b\u1ec7nh ch\u1ebft h\u00e9o r\u1eebng tr\u1ed3ng keo lai v\u00e0 Keo tai t\u01b0\u1ee3ng v\u1edbi tri\u1ec7u ch\u1ee9ng \u0111i\u1ec3n h\u00ecnh l\u00e0 tr\u00ean v\u1ecf c\u1ee7a th\u00e2n c\u00e2y b\u1ecb b\u1ec7nh c\u00f3 nh\u1eefng v\u1ebft lo\u00e9t, g\u1ed7 b\u1ecb th\u00e2m \u0111en ho\u1eb7c xanh \u0111en, c\u00f3 th\u1ec3 s\u00f9i b\u1ecdt. Khi c\u00e2y b\u1ecb b\u1ec7nh, t\u00e1n l\u00e1 b\u1eaft \u0111\u1ea7u h\u00e9o t\u1eeb tr\u00ean ng\u1ecdn xu\u1ed1ng v\u00e0 sau \u0111\u00f3 c\u00e2y s\u1ebd b\u1ecb ch\u1ebft. K\u1ebft qu\u1ea3 gi\u1ea3i tr\u00ecnh t\u1ef1 gen b\u1eb1ng c\u1eb7p m\u1ed3i \u03b2<\/em>T1a v\u00e0 \u03b2<\/em>T1b \u0111\u00e3 x\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ee7ng n\u1ea5m g\u00e2y b\u1ec7nh ch\u1ebft h\u00e9o r\u1eebng tr\u1ed3ng keo lai v\u00e0 Keo tai t\u01b0\u1ee3ng t\u1ea1i T\u1ed5ng c\u00f4ng ty Gi\u1ea5y Vi\u1ec7t Nam l\u00e0 lo\u00e0i Ceratocystis manginecans<\/em>. C\u00e1c ch\u1ee7ng n\u1ea5m ph\u00e2n l\u1eadp t\u1eeb c\u00e1c m\u1eabu c\u00e2y b\u1ecb b\u1ec7nh \u0111\u1ec1u c\u00f3 t\u00ednh g\u00e2y b\u1ec7nh m\u1ea1nh v\u00e0 r\u1ea5t m\u1ea1nh \u0111\u1ed1i v\u1edbi c\u00e2y keo lai 1 n\u0103m tu\u1ed5i. B\u1ec7nh ch\u1ebft h\u00e9o g\u00e2y h\u1ea1i ph\u1ed5 bi\u1ebfn tr\u00ean r\u1eebng tr\u1ed3ng keo, t\u1ef7 l\u1ec7 b\u1ecb b\u1ec7nh tr\u00ean keo lai t\u1eeb 14,2% \u0111\u1ebfn 19,6% v\u00e0 tr\u00ean Keo tai t\u01b0\u1ee3ng t\u1eeb 16,7 \u0111\u1ebfn 20,9%. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y s\u1ebd g\u00f3p ph\u1ea7n qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3 b\u1ec7nh ch\u1ebft h\u00e9o keo.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ec7nh ch\u1ebft h\u00e9o, Ceratocystis manginecans<\/em>, keo lai, Keo tai t\u01b0\u1ee3ng<\/td>\n<\/tr>\n

\n

<\/a>Ceratocystis wilt disease of Acacia plantations in Vietnam Paper Corporation<\/strong><\/p>\n

Acacia<\/em> spp. are planted in large scale (about 1.3 million ha, 2015) in Vietnam for the main purposes of pulp – wood, wood – chip and saw – log productions. However, wilt disease has been spread and become a serious threat to these estates. This study aimed to identify symptoms, current status, characterization of morphology, taxonomy, and pathogenicity of pathogens that cause wilt disease in Acacia hybrid and A. mangium<\/em> plantations in Vietnam Paper Corporation. Typical symptoms of wilt disease in Acacia hybrid and A. mangium<\/em> are cankers on the stem, the bark and wood surrounding lesions is discolored, the wood turns to brown or dark blue. The canopies turned yellow, followed by wilting, leaf drying and leaf fall, and then tree death. From \u03b2<\/em>T1a and \u03b2<\/em>T1b sequence analysis, the Ceratocystis <\/em>isolates causing wilt disease in Acacia hybrid and A. mangium<\/em> plantations in Vietnam Paper Corporation belong to Ceratocystis manginecans<\/em>. The pathogenicity of isolates ranged highly virulent with
\nAcacia hybrid cutting. The wilt disease caused by C. manginecans<\/em> is quite common in acacia plantations and disease incidences are 14.2 – 19.6% and 16.7 – 20.9% to Acacia hybrid and A. mangium<\/em> respectively. The findings of this study could be useful for disease management.<\/p>\n

Keywords:<\/em><\/strong> Acacia hybird, Acacia mangium, <\/em>Ceratocystis manginecans<\/em>, Wilt disease<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

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

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 2 – 2020 \u00a0 1. Nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng hom\u00a0 c\u00e2y X\u00e1 x\u1ecb (Cinnamomum parthenoxylon Meisn.) v\u00e0 tr\u1ed3ng th\u1eed nghi\u1ec7m \u1edf v\u01b0\u1eddn \u01b0\u01a1m t\u1ea1i L\u00e2m \u0110\u1ed3ng The propagation of Cinnamomum parthenoxylon Meisn. by cuttings method and experimental grown at the nursery in Lam Dong province L\u00ea H\u1ed3ng […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26,24,45],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2176"}],"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=2176"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2176\/revisions"}],"predecessor-version":[{"id":2399,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2176\/revisions\/2399"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}