{"id":2195,"date":"2021-01-19T15:09:36","date_gmt":"2021-01-19T08:09:36","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2195"},"modified":"2023-11-23T12:24:52","modified_gmt":"2023-11-23T05:24:52","slug":"special-issue-number-2020","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/special-issue-number-2020\/","title":{"rendered":"Special Issue Number 2020"},"content":{"rendered":"

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<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 CHUY\u00caN \u0110\u1ec0<\/strong> 20<\/strong>20<\/strong><\/p>\n

\u00a0<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\nK\u1ebft qu\u1ea3 b\u01b0\u1edbc \u0111\u1ea7u kh\u1ea3o nghi\u1ec7m gi\u1ed1ng B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala<\/em> Buch-Ham) \u1edf v\u00f9ng ven bi\u1ec3n B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9, Vi\u1ec7t Nam<\/td>\nInitial results on provenance testing of Sonneratia apetala<\/em> Buch-Ham in Northern and North Central Coastal regions, Vietnam<\/td>\nL\u00ea V\u0103n Th\u00e0nh
\n\u0110\u1ed7 Th\u1ecb Kim Nhung
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh
\nT\u1ea1 V\u0103n H\u00e2n
\nNguy\u1ec5n Xu\u00e2n \u0110\u00e0i
\nL\u00ea \u0110\u00ecnh Tr\u01b0\u1eddng
\nV\u0169 Qu\u00fd \u0110\u00f4ng<\/td>\n		3<\/td>\n<\/tr>\n
2.<\/td>\nK\u1ebft qu\u1ea3 ch\u1ecdn l\u1ecdc c\u00e2y tr\u1ed9i
\nD\u1ebb v\u00e1n (Castanea mollissima<\/em> Blume) \u1edf huy\u1ec7n Ng\u00e2n S\u01a1n, B\u1eafc K\u1ea1n v\u00e0 huy\u1ec7n Tr\u00f9ng Kh\u00e1nh, Cao B\u1eb1ng<\/td>\n		Results of selection of plus trees of Castanea mollissima<\/em> in Ngan Son district, Bac Kan and Trung Khanh district, Cao Bang<\/td>\nNguy\u1ec5n Quang D\u0169ng
\nNguy\u1ec5n Ti\u1ebfn H\u01b0ng
\nL\u00ea V\u0103n Th\u00e0nh
\nT\u1ea1 V\u0103n H\u00e2n
\nTr\u1ea7n V\u0103n Cao<\/td>\n		17<\/td>\n<\/tr>\n
3.<\/td>\nM\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd
\nc\u1ee7a c\u00e2y B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala<\/em> Buch-Ham) t\u1ea1i Th\u00e1i B\u00ecnh<\/td>\n		Some physiological indicators of Sonneratia apetala<\/em> Buch-Ham in
\nThai Binh<\/td>\n		\u0110\u1ed7 Th\u1ecb Kim Nhung
\nL\u00ea V\u0103n Th\u00e0nh
\nL\u00ea \u0110\u00ecnh Tr\u01b0\u1eddng
\nV\u0169 Qu\u00fd \u0110\u00f4ng<\/td>\n		23<\/td>\n<\/tr>\n
4.<\/td>\nM\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a c\u00e2y \u01af\u01a1i (Scaphium macropodum<\/em> Miq.)
\nt\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh mi\u1ec1n Trung v\u00e0 T\u00e2y Nguy\u00ean<\/td>\n		Some silvicultural characteristics of Scaphium macropodum<\/em>. Miq at various Central Coastal and Central Highlands provinces<\/td>\n\u0110o\u00e0n \u0110\u00ecnh Tam
\nL\u00ea Th\u1ecb Thu H\u1eb1ng
\nNguy\u1ec5n Ti\u1ebfn H\u01b0ng
\nH\u00e0 \u0110\u00ecnh Long<\/td>\n		32<\/td>\n<\/tr>\n
5.<\/td>\nTh\u1ef1c tr\u1ea1ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m l\u1eadp \u0111\u1ecba n\u01a1i tr\u1ed3ng D\u1ebb v\u00e1n (Castanea mollissima<\/em> Blume) hi\u1ec7n nay \u1edf huy\u1ec7n Ng\u00e2n S\u01a1n, T\u1ec9nh B\u1eafc K\u1ea1n<\/td>\nStatus and characteristics of Castanea mollissima<\/em> Blume\u2019s planting site in Ngan Son district, Bac Kan province<\/td>\nL\u00ea V\u0103n Th\u00e0nh
\nNguy\u1ec5n Ti\u1ebfn H\u01b0ng
\nNguy\u1ec5n Quang D\u0169ng
\nT\u1ea1 V\u0103n H\u00e2n
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh
\n\u0110inh Thanh Giang
\nH\u00e0 Th\u1ecb Thanh Mai<\/td>\n		40<\/td>\n<\/tr>\n
6.<\/td>\n\u0110\u00e1nh gi\u00e1 \u0111\u1eb7c \u0111i\u1ec3m \u0111\u1ea5t v\u00e0 l\u1eadp \u0111\u1ecba tr\u1ed3ng ph\u1ee5c h\u1ed3i r\u1eebng ng\u1eadp m\u1eb7n d\u1ef1 \u00e1n GCF t\u1ea1i Nam \u0110\u1ecbnh, Thanh H\u00f3a, Qu\u1ea3ng Nam, Qu\u1ea3ng Ng\u00e3i v\u00e0 C\u00e0 Mau<\/td>\nSoil and site assessment for mangrove rehabilitation of GCF project in Nam Dinh, Thanh Hoa, Quang Nam, Quang Ngai and Ca Mau<\/td>\nNguy\u1ec5n Th\u00f9y M\u1ef9 Linh
\nHo\u00e0ng Vi\u1ec7t Anh
\nL\u00ea V\u0103n Th\u00e0nh
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh
\nPh\u1ea1m Th\u1ecb Ng\u00e2n<\/td>\n		52<\/td>\n<\/tr>\n
7.<\/td>\nTh\u1ef1c tr\u1ea1ng v\u00e0 gi\u1ea3i ph\u00e1p
\nb\u1ea3o v\u1ec7, ph\u1ee5c h\u1ed3i v\u00e0 ph\u00e1t tri\u1ec3n r\u1eebng ph\u00f2ng h\u1ed9 b\u1ec1n v\u1eefng v\u00f9ng c\u00e1t ven bi\u1ec3n
\nB\u1eafc Trung B\u1ed9<\/td>\n		Current status and measures for protection, rehabilitation and sustainable development of protection forestsonsandy coastal area of the North Central Coast<\/td>\nNg\u00f4 \u0110\u00ecnh Qu\u1ebf<\/td>\n66<\/td>\n<\/tr>\n
8.<\/td>\nQu\u1ea3n l\u00fd t\u1ed5ng h\u1ee3p r\u1eebng ng\u1eadp m\u1eb7n \u1ee9ng ph\u00f3 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu: th\u1ef1c tr\u1ea1ng v\u00e0 khuy\u1ebfn ngh\u1ecb ch\u00ednh s\u00e1ch<\/td>\nIntegrated management of mangrove forests to respond to climate change: current situation and policy recommendations<\/td>\nV\u0169 T\u1ea5n Ph\u01b0\u01a1ng
\nNguy\u1ec5n Th\u00f9y M\u1ef9 Linh
\n\u0110\u00e0o L\u00ea Huy\u1ec1n Trang
\nNguy\u1ec5n V\u0103n Tr\u01b0\u1eddng<\/td>\n		75<\/td>\n<\/tr>\n
9.<\/td>\nNghi\u00ean c\u1ee9u ho\u00e0n thi\u1ec7n quy tr\u00ecnh c\u00f4ng ngh\u1ec7 nh\u00e2n sinh kh\u1ed1i in vitro n\u1ea5m r\u1ec5 n\u1ed9i c\u1ed9ng sinh AM (Arbuscular mycorrhiza<\/em>)<\/td>\nTechnology improvement for mass production of AM (Arbuscular mycorrhiza<\/em>) propagules in in vitro<\/td>\nV\u0169 Qu\u00fd \u0110\u00f4ng
\nL\u00ea Qu\u1ed1c Huy
\nL\u00ea Th\u1ecb Thu H\u1eb1ng<\/td>\n		90<\/td>\n<\/tr>\n
10.<\/td>\n\u0110\u00e1nh gi\u00e1 t\u00e1c \u0111\u1ed9ng t\u1edbi m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i c\u1ee7a m\u1ed9t s\u1ed1 lo\u00e0i th\u1ef1c v\u1eadt ngo\u1ea1i lai
\nt\u1ea1i Vi\u1ec7t Nam<\/td>\n		Assessing the impact on the ecological environment of some invasive and potenially invasive alien species
\nin Vietnam<\/td>\n		Nguy\u1ec5n Th\u1ecb Oanh
\nNguy\u1ec5n Th\u1ecb Tuy\u1ebft
\nTr\u1ea7n Trung Th\u00e0nh
\nNguy\u1ec5n Th\u1ecb Thu H\u1eb1ng
\nNguy\u1ec5n V\u0103n Ngh\u0129a<\/td>\n		99<\/td>\n<\/tr>\n
11.<\/td>\nX\u00e2y d\u1ef1ng t\u01b0\u01a1ng quan gi\u1eefa l\u01b0\u1ee3ng m\u01b0a v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 v\u00f2ng n\u0103m c\u1ee7a c\u00e2y P\u01a1 mu t\u1ea1i huy\u1ec7n V\u0103n B\u00e0n, t\u1ec9nh L\u00e0o Cai<\/td>\nEstablishment of rorrelation equations between rainfall parameters of annual tree ring of Fokienia hodginsii<\/em>
\nin Van Ban district, Lao Cai province<\/td>\n		\u0110inh Vi\u1ec7t H\u01b0ng
\nNguy\u1ec5n T\u1eed Kim<\/td>\n		112<\/td>\n<\/tr>\n
12.<\/td>\n\u0110\u00e1nh gi\u00e1 di\u1ec5n bi\u1ebfn m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng t\u1ea1i c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng thu\u1ed9c khu v\u1ef1c ph\u00f2ng h\u1ed9 xung y\u1ebfu ven h\u1ed3 s\u00f4ng \u0110\u00e0 t\u1ec9nh H\u00f2a B\u00ecnh<\/td>\nAssessment of changes in several environmental factors associated with plantation forest models in critical protection areas in Da River reservoir of
\nHoa Binh province<\/td>\n		Tr\u1ea7n V\u0103n Cao
\nNguy\u1ec5n Th\u1ecb Oanh
\nTr\u1ea7n Trung Th\u00e0nh
\nNguy\u1ec5n V\u0103n Ngh\u0129a
\nNguy\u1ec5n Thanh H\u1ea3i<\/td>\n		120<\/td>\n<\/tr>\n
13.<\/td>\nChi tr\u1ea3 d\u1ecbch v\u1ee5 m\u00f4i tr\u01b0\u1eddng r\u1eebng qua giao d\u1ecbch \u0111i\u1ec7n t\u1eed<\/td>\nE-payment application
\nin payment for forest environment service (PFES)<\/td>\n		\u0110\u1eb7ng Quang H\u01b0ng
\n\u0110\u1eb7ng Th\u00fay Nga
\nHo\u00e0ng Nguy\u1ec5n Vi\u1ec7t Hoa<\/td>\n		135<\/td>\n<\/tr>\n
14.<\/td>\nChi ti\u00eau c\u00f4ng cho \u0111a d\u1ea1ng sinh h\u1ecdc giai \u0111o\u1ea1n
\n2011 – 2015<\/td>\n		Public expenditure on biodiversity in the period
\nof 2011 – 2015<\/td>\n		Tr\u1ea7n Th\u1ecb Thu H\u00e0 v\u00e0 Nguy\u1ec5n Thanh S\u01a1n<\/td>\n148<\/td>\n<\/tr>\n
15.<\/td>\nTi\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn t\u1ea1i t\u1ec9nh B\u1eafc K\u1ea1n<\/td>\nSelection of the potential species for large-wood afforestation in Bac Kan province<\/td>\n\u0110\u1eb7ng Quang H\u01b0ng
\nV\u0169 Qu\u00fd \u0110\u00f4ng
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh
\nNguy\u1ec5n Xu\u00e2n \u0110\u00e0i<\/td>\n		158<\/td>\n<\/tr>\n
16.<\/td>\n\u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u00e1c m\u00f4 h\u00ecnh ph\u1ee5c h\u1ed3i r\u1eebng ph\u00f2ng h\u1ed9 t\u1ea1i x\u00e3 X\u0103m Kh\u00f2e, huy\u1ec7n
\nMai Ch\u00e2u, t\u1ec9nh H\u00f2a B\u00ecnh<\/td>\n		Assessing the effectiveness of protection forest rehabilitation models in Xam Khoe commune,
\nMai Chau district,
\nHoa Binh province<\/td>\n		L\u00ea Th\u1ecb Thu H\u1eb1ng
\nL\u00ea Qu\u1ed1c Huy
\nV\u0169 Qu\u00fd \u0110\u00f4ng<\/td>\n		168<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebeT QU\u1ea2 B\u01af\u1edaC \u0110\u1ea6U KH\u1ea2O NGHI\u1ec6M GI\u1ed0NG B\u1ea6N KH\u00d4NG C\u00c1NH (Sonneratia apetala <\/em>Buch-Ham) \u1ede V\u00d9NG VEN BI\u1ec2N B\u1eaeC B\u1ed8 V\u00c0 B\u1eaeC TRUNG B\u1ed8, VI\u1ec6T NAM<\/p>\n

<\/a>L\u00ea V\u0103n Th\u00e0nh1<\/sup>, \u0110\u1ed7 Th\u1ecb Kim Nhung1<\/sup>, Ph\u1ea1m Ng\u1ecdc Th\u00e0nh1<\/sup>,
\nT\u1ea1 V\u0103n H\u00e2n1<\/sup>, Nguy\u1ec5n Xu\u00e2n \u0110\u00e0i1<\/sup>, L\u00ea \u0110\u00ecnh Tr\u01b0\u1eddng2<\/sup>, V\u0169 Qu\u00fd \u0110\u00f4ng1<\/sup><\/p>\n

1<\/sup><\/strong>Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng
\n2<\/sup><\/strong>Trung t\u00e2m Nghi\u00ean c\u1ee9u Th\u1ef1c nghi\u1ec7m L\u00e2m nghi\u1ec7p T\u00e2y Nam B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u1ea7n kh\u00f4ng c\u00e1nh ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean \u1edf Bangladesh, \u1ea4n \u0110\u1ed9 v\u00e0 Myanmar, l\u00e0 lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n sinh tr\u01b0\u1edfng nhanh, Trung Qu\u1ed1c \u0111\u00e3 d\u1eabn gi\u1ed1ng v\u1ec1 tr\u1ed3ng r\u1eebng ng\u1eadp m\u1eb7n th\u00e0nh c\u00f4ng t\u1eeb n\u0103m 1985. \u1ede Vi\u1ec7t Nam, B\u1ea7n kh\u00f4ng c\u00e1nh \u0111\u01b0\u1ee3c d\u1eabn gi\u1ed1ng v\u1ec1 g\u00e2y tr\u1ed3ng \u1edf v\u00f9ng ven bi\u1ec3n B\u1eafc B\u1ed9 t\u1eeb n\u0103m 1995 nh\u01b0ng ch\u1ec9 mang t\u00ednh ch\u1ea5t tr\u1ed3ng th\u1eed nghi\u1ec7m, ch\u01b0a c\u00f3 c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u c\u00f3 t\u00ednh h\u1ec7 th\u1ed1ng v\u1ec1 kh\u1ea3o nghi\u1ec7m gi\u1ed1ng. T\u1eeb th\u00e1ng 4 n\u0103m 2018 \u0111\u1ebfn nay, 6 xu\u1ea5t x\u1ee9 B\u1ea7n kh\u00f4ng c\u00e1nh \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m, t\u1ea1i Th\u00e1i B\u00ecnh xu\u1ea5t x\u1ee9 H\u1ea3i Nam v\u00e0 Tanintharyi cho sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t, th\u1ee9 hai l\u00e0 xu\u1ea5t x\u1ee9 Ti\u1ec1n H\u1ea3i v\u00e0 Ayeyarwady; t\u1ea1i Thanh H\u00f3a xu\u1ea5t x\u1ee9 Giao Th\u1ee7y, Tanintharyi v\u00e0 Ayeyarwady cho sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t. Kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf 32 gia \u0111\u00ecnh so v\u1edbi gi\u1ed1ng \u0111\u1ea1i tr\u00e0 (\u0111\u1ed1i ch\u1ee9ng) k\u1ebft qu\u1ea3 t\u1ea1i Th\u00e1i B\u00ecnh c\u1ea3 32 gia \u0111\u00ecnh \u0111\u1ec1u c\u00f3 \u0111\u1ed9 v\u01b0\u1ee3t v\u1ec1 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng \u1edf m\u1ee9c r\u1ea5t cao v\u00e0 cao, b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e1p \u1ee9ng \u0111i\u1ec1u ki\u1ec7n ch\u1ecdn l\u00e0m c\u00e2y m\u1eb9 cung c\u1ea5p gi\u1ed1ng cho sinh tr\u01b0\u1edfng nhanh. T\u1ea1i Thanh H\u00f3a c\u00f3 25 gia \u0111\u00ecnh b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n sinh tr\u01b0\u1edfng ch\u1ecdn l\u00e0m c\u00e2y m\u1eb9.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala<\/em> Buch-Ham), c\u00e2y ng\u1eadp m\u1eb7n, kh\u1ea3o nghi\u1ec7m gi\u1ed1ng, sinh tr\u01b0\u1edfng<\/td>\n<\/tr>\n

\n

<\/a>Initial results on provenance testing of Sonneratia apetala<\/em> Buch-ham in northern and North Central Coastal regions, Viet nam<\/strong><\/p>\n

Sonneratia apetala<\/em> Buch-Ham, a fast-growing mangrove species, is naturally distributed in Bangladesh, India and Myanmar. China has been using this species for successful mangrove planting since 1985. In Vietnam, S. apetala<\/em> has been cultivated in the northern coastal region since 1995, but it is only experimental and there is no systematic research on the tree improvement. From April 2018 up to now, 6 provenances have been tested. In Thai Binh province, provenances Hainan and Tanintharyi showed the best growth, and the second-best provenances were Vietnam and Ayeyarwady. In Thanh Hoa, provenances Giao Thuy, Tanintharyi and Ayeyarwady showed the best growth. Progeny test of 32 families compared to the common (control) variety showed that in Thai Binh all of the 32 families exceeded the growth targets at a very high or high level, initially meeting the requirements of the mother trees which provide seeds for fast-growing. In Thanh Hoa, 25 families initially met the criteria growth for mother tree selection.<\/p>\n

Keywords:<\/em><\/strong> Sonneratia apetala<\/em> Buch-Ham, mangroves tree, variety testing, growth<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>K\u1ebeT QU\u1ea2 CH\u1eccN L\u1eccC\u00a0C\u00c2Y TR\u1ed8I D\u1eba V\u00c1N Castanea mollissima<\/em> Blume \u1ede HUY\u1ec6N NG\u00c2N S\u01a0N, B\u1eaeC K\u1ea0N V\u00c0 HUY\u1ec6N TR\u00d9NG KH\u00c1NH, CAO B\u1eb0NG<\/p>\n

<\/a>Nguy\u1ec5n Quang D\u0169ng, Nguy\u1ec5n Ti\u1ebfn H\u01b0ng,
\nL\u00ea V\u0103n Th\u00e0nh, T\u1ea1 V\u0103n H\u00e2n, Tr\u1ea7n V\u0103n Cao<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

D\u1ebb v\u00e1n (Castanea mollissima<\/em> Blume) l\u00e0 lo\u00e0i c\u00e2y r\u1eebng cho h\u1ea1t \u0103n \u0111\u01b0\u1ee3c. H\u1ea1t D\u1ebb v\u00e1n c\u00f3 gi\u00e1 tr\u1ecb dinh d\u01b0\u1ee1ng cao v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m th\u1ee9c \u0103n l\u00e2u \u0111\u1eddi tr\u00ean th\u1ebf gi\u1edbi. M\u1eb7c d\u00f9 D\u1ebb v\u00e1n \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng t\u1eeb l\u00e2u t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda B\u1eafc Vi\u1ec7t Nam, n\u0103ng su\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t D\u1ebb v\u00e1n c\u00f2n nhi\u1ec1u h\u1ea1n ch\u1ebf, m\u1ed9t ph\u1ea7n do gi\u1ed1ng c\u00e2y ch\u01b0a \u0111\u01b0\u1ee3c tuy\u1ec3n ch\u1ecdn. Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1eb1m ch\u1ecdn l\u1ecdc c\u00e1c c\u00e2y tr\u1ed9i D\u1ebb v\u00e1n \u0111\u1ec3 t\u1ea1o n\u1ec1n t\u1ea3ng c\u01a1 s\u1edf cho nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng c\u00e2y D\u1ebb v\u00e1n trong giai \u0111o\u1ea1n ti\u1ebfp theo. Nghi\u00ean c\u1ee9u k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n g\u1ed3m \u0111i\u1ec1u tra hi\u1ec7n tr\u01b0\u1eddng tr\u00ean c\u00e1c \u00f4 ti\u00eau chu\u1ea9n v\u00e0 ph\u1ecfng v\u1ea5n ch\u1ee7 r\u1eebng. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra, ph\u1ecfng v\u1ea5n \u0111\u00e3 tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c t\u1ed5ng s\u1ed1 44 c\u00e2y tr\u1ed9i D\u1ebb v\u00e1n, trong \u0111\u00f3, 17 c\u00e2y tr\u1ed9i D\u1ebb v\u00e1n t\u1ea1i huy\u1ec7n Ng\u00e2n S\u01a1n, t\u1ec9nh B\u1eafc K\u1ea1n v\u00e0 27 c\u00e2y tr\u1ed9i t\u1ea1i huy\u1ec7n Tr\u00f9ng Kh\u00e1nh, t\u1ec9nh Cao B\u1eb1ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 ti\u1ebfn h\u00e0nh nh\u00e2n gi\u1ed1ng v\u00e0 kh\u1ea3o nghi\u1ec7m nh\u1eb1m ch\u1ecdn \u0111\u01b0\u1ee3c nh\u1eefng gia \u0111\u00ecnh ho\u1eb7c d\u00f2ng v\u00f4 t\u00ednh D\u1ebb v\u00e1n t\u1ed1t ph\u1ee5c v\u1ee5 s\u1ea3n xu\u1ea5t.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u1ebb v\u00e1n (Castanea mollissima <\/em>Blume), c\u00e2y tr\u1ed9i, sinh tr\u01b0\u1edfng, qu\u1ea3 v\u00e0 h\u1ea1t, s\u00e2u b\u1ec7nh h\u1ea1i th\u00e2n<\/td>\n<\/tr>\n

\n

<\/a>Results of selection of plus trees of Castanea mollissima<\/em> in Ngan Son district, Bac Kan and Trung Khanh district, Cao Bang<\/strong><\/p>\n

Castanea mollissima<\/em> Blume is a forest tree species with edible nuts. Chestnut has high nutritional value and has been used as food for a long time in the world. Although chestnut has been cultivated for a long time in some Northern provinces of Vietnam, the yield and quality of the chestnut trees are still limited, partly because the variety has not been selected. This study was conducted to select the chestnut plus trees as the basis for the upcoming phase of cultivar testing of the species. The study incorporated standard methods including field forest inventory on plots and interviews with forest owners. The results of the surveys and interviews have selected a total of 44 plus trees of Chinese chestnuts, of which, 17 plus trees in Ngan Son district, Bac Kan province and 27 plus trees in Trung Khanh district, Cao Bang province. The research results are the basis for propagation and establishing trials to select the best families or clones for large-scale production.<\/p>\n

Keywords:<\/em><\/strong> Castanea mollissima <\/em>Blume, plus trees, growth, fruits and nuts, stem insects and diseases<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M SINH L\u00dd C\u1ee6A C\u00c2Y B\u1ea6N KH\u00d4NG C\u00c1NH (Sonneratia apetala <\/em>Buch-Ham) T\u1ea0I TH\u00c1I B\u00ccNH<\/p>\n

<\/a>\u0110\u1ed7 Th\u1ecb Kim Nhung1<\/sup>, L\u00ea V\u0103n Th\u00e0nh1<\/sup>, L\u00ea \u0110\u00ecnh Tr\u01b0\u1eddng2<\/sup>, V\u0169 Qu\u00fd \u0110\u00f4ng1<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng
\n2<\/sup>Trung t\u00e2m Nghi\u00ean c\u1ee9u Th\u1ef1c nghi\u1ec7m L\u00e2m nghi\u1ec7p T\u00e2y Nam B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala <\/em>Buch-Ham) l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn, sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n nhanh, kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ea1nh cao h\u01a1n B\u1ea7n chua. B\u1ea7n kh\u00f4ng c\u00e1nh \u0111\u01b0\u1ee3c tr\u1ed3ng ch\u1ee7 y\u1ebfu \u1edf v\u00f9ng B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9. Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd c\u1ee7a c\u00e2y B\u1ea7n kh\u00f4ng c\u00e1nh g\u00f3p ph\u1ea7n cung c\u1ea5p c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c g\u00e2y tr\u1ed3ng v\u00e0 ph\u00e1t tri\u1ec3n B\u1ea7n kh\u00f4ng c\u00e1nh t\u1ea1i Vi\u1ec7t Nam. L\u00e1 B\u1ea7n kh\u00f4ng c\u00e1nh c\u00f3 \u0111\u1ed9 d\u00e0y n\u1eb1m trong kho\u1ea3ng 334,05 – 651,92 \u00b5m. \u0110\u1ed9 d\u00e0y l\u00e1 \u1edf giai \u0111o\u1ea1n 1 tu\u1ed5i l\u00e0 l\u1edbn nh\u1ea5t t\u1eeb 546,92 – 651,92 \u00b5m. \u0110\u1ed9 d\u00e0y c\u1ee7a t\u1ea7ng cutin tr\u00ean v\u00e0 d\u01b0\u1edbi ch\u00eanh l\u1ec7ch nhau kh\u00f4ng \u0111\u00e1ng k\u1ec3, t\u1ea7ng cutin t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u0111\u1ed9 d\u00e0y c\u1ee7a l\u00e1. \u0110\u1ed9 d\u00e0y m\u00f4 d\u1eadu tr\u00ean, m\u00f4 d\u1eadu d\u01b0\u1edbi \u1edf giai \u0111o\u1ea1n 1 tu\u1ed5i l\u00e0 l\u1edbn nh\u1ea5t trung b\u00ecnh l\u1ea7n l\u01b0\u1ee3t l\u00e0 179,74 \u00b5m v\u00e0 164,78 \u00b5m. \u0110\u1ed9 d\u00e0y l\u00e1 c\u00e0ng cao th\u00ec m\u00f4 khuy\u1ebft c\u00e0ng l\u1edbn. M\u00f4 khuy\u1ebft c\u1ee7a l\u00e1 B\u1ea7n kh\u00f4ng c\u00e1nh \u1edf giai \u0111o\u1ea1n 1 tu\u1ed5i l\u00e0 l\u1edbn nh\u1ea5t t\u1eeb 172,26 – 187,93 \u00b5m, \u0111\u1ed9 d\u00e0y m\u00f4 khuy\u1ebft c\u1ee7a l\u00e1 \u1edf giai \u0111o\u1ea1n 7 tu\u1ed5i l\u00e0 nh\u1ecf nh\u1ea5t t\u1eeb 131,12 – 140,25 \u00b5m. S\u1ed1 l\u01b0\u1ee3ng kh\u00ed kh\u1ed5ng c\u1ee7a B\u1ea7n kh\u00f4ng c\u00e1nh trong 1 \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch l\u00e1 t\u1eeb 32 – 39 c\u00e1i\/mm2<\/sup>. H\u00e0m l\u01b0\u1ee3ng di\u1ec7p l\u1ee5c t\u1ed5ng s\u1ed1 c\u1ee7a B\u1ea7n kh\u00f4ng c\u00e1nh \u1edf giai \u0111o\u1ea1n 7 tu\u1ed5i l\u1edbn nh\u1ea5t l\u00e0 2,41 – 2,47 mg\/g, t\u1ef7 l\u1ec7 dla\/dlb n\u1eb1m trong kho\u1ea3ng 2,95 – 3,21. H\u00e0m l\u01b0\u1ee3ng N, P2<\/sub>O5<\/sub>, K2<\/sub>O trong l\u00e1 t\u0103ng khi c\u00e2y c\u00e0ng l\u1edbn, bi\u1ec3u hi\u1ec7n r\u00f5 r\u1ec7t nh\u1ea5t l\u00e0 h\u00e0m l\u01b0\u1ee3ng P2<\/sub>O5<\/sub>, K2<\/sub>O. T\u1ed5ng s\u1ed1 mu\u1ed1i tan \u1edf giai \u0111o\u1ea1n 7 tu\u1ed5i l\u00e0 l\u1edbn nh\u1ea5t. Kh\u1ea3 n\u0103ng ch\u1ecbu b\u0103ng gi\u00e1 \u1edf giai \u0111o\u1ea1n 3 tu\u1ed5i c\u1ee7a B\u1ea7n kh\u00f4ng c\u00e1nh v\u00e0 B\u1ea7n chua ch\u01b0a c\u00f3 s\u1ef1 kh\u00e1c nhau r\u00f5 r\u1ec7t, xu h\u01b0\u1edbng B\u1ea7n kh\u00f4ng c\u00e1nh ch\u1ecbu b\u0103ng gi\u00e1 t\u1ed1t h\u01a1n B\u1ea7n chua.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea7n kh\u00f4ng c\u00e1nh, \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd, r\u1eebng ng\u1eadp m\u1eb7n<\/td>\n<\/tr>\n

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<\/a>Some physiological indicators of Sonneratia apetala<\/em> Buch-Ham in Thai Binh<\/strong><\/p>\n

Sonneratia apetala<\/em> Buch-Ham is a large tree species with fast growth and cold tolerance compared to other Sonneratia<\/em> species grown in Northern and Northern Central regions. Researching on some physiological characteristics of Sonneratia apetala<\/em> contributed to providing a scientific basis for the cultivation and development of this species in Vietnam. The leaf thichness of Sonneratia apetala <\/em>was about 334.05 – 651.92 \u00b5m. The leaf thickness at 1 year of age was the largest at 546.92 – 651.92 \u00b5m. The thickness of the upper and lower cutin layers was not significantly different and was proportional to the thickness of the leaves. The thickness of upper and lower rooster tissues at 1 year of age was the largest avegare about 179.74 \u00b5m and 164.78 \u00b5m. The higher the leaf thickness, the larger the defect tissue. The defect tissue of Sonneratia apetala<\/em> at 1 year of age was the largest, from 172.26 \u00b5m to 187.93 \u00b5m, the thickness of defect tissue of leaves at 7 years of age was the smallest at 131.12 – 140.25 \u00b5m. The number of stomata in a unit of leaf area ranged from 32 to 39 pieces\/mm2<\/sup>. The total chlorophyll content of Sonneratia<\/em> at the age of 7 was 2.41 – 2.47 mg\/g, the ratio of dla\/dlb was 2.95 – 3.21. The N, P2<\/sub>O5<\/sub>, K2<\/sub>O contents in the leaves increased as the tree grew larger, the most evident expression was the concentration of P2<\/sub>O5<\/sub>, K2<\/sub>O. The total number of soluble salts at the age of 7 was the largest. The frost resistance at 3 – year-old of Sonneratia apetala<\/em> Buch-Ham and Sonneratia caseolaris<\/em> does not have a significant difference. Sonneratia caseolaris <\/em>is more susceptible to the frost than Sonneratia apetala <\/em>Buch-Ham.<\/p>\n

Keywords:<\/em><\/strong> Sonneratia apetala<\/em> Buch-Ham, physiological characteristics, mangroves<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC C\u1ee6A C\u00c2Y \u01af\u01a0I (Scaphium macropodum. <\/em>Miq) T\u1ea0I M\u1ed8T S\u1ed0 T\u1ec8NH MI\u1ec0N TRUNG V\u00c0 T\u00c2Y NGUY\u00caN<\/p>\n

<\/a>\u0110o\u00e0n \u0110\u00ecnh Tam, L\u00ea Th\u1ecb Thu H\u1eb1ng, Nguy\u1ec5n Ti\u1ebfn H\u01b0ng, H\u00e0 \u0110\u00ecnh Long<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a c\u00e2y \u01af\u01a1i trong r\u1eebng t\u1ef1 nhi\u00ean t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh mi\u1ec1n Trung v\u00e0 T\u00e2y Nguy\u00ean cho th\u1ea5y: \u01af\u01a1i ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu trong r\u1eebng t\u1ef1 nhi\u00ean l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh v\u1edbi m\u1eadt \u0111\u1ed9 trung b\u00ecnh 15 c\u00e2y\/ha tr\u00ean c\u1ea3 \u0111\u1ed3i n\u00fai th\u1ea5p \u0111\u1ebfn cao n\u01a1i c\u00f3 \u0111\u1ed9 cao t\u1eeb tr\u00ean 700 m \u0111\u1ebfn d\u01b0\u1edbi 1.000 m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n, nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh n\u0103m t\u1eeb 23,3 \u0111\u1ebfn 24,10<\/sup>C; L\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh n\u0103m t\u1eeb 1.400 – 1.900 mm; \u0111\u1ed9 \u1ea9m trung b\u00ecnh n\u0103m t\u1eeb 70 – 86,1%. Sinh tr\u01b0\u1edfng kh\u00e1 t\u1ed1t tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t feralit v\u00e0ng x\u00e1m (Fq), v\u00e0ng \u0111\u1ecf tr\u00ean phi\u1ebfn th\u1ea1ch s\u00e9t (Fs) v\u00e0 Bazan (Fk) \u1edf n\u01a1i c\u00f3 t\u1ea7ng \u0111\u1ea5t s\u00e2u tr\u00ean 80 cm, th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi nh\u1eb9 \u0111\u1ebfn trung b\u00ecnh, \u0111\u1ea5t chua (pH < 4), h\u00e0m l\u01b0\u1ee3ng m\u00f9n, \u0111\u1ea1m t\u1ed5ng s\u1ed1 \u1edf m\u1ee9c trung b\u00ecnh, ngh\u00e8o l\u00e2n v\u00e0 kali d\u1ec5 ti\u00eau. \u01af\u01a1i l\u00e0 lo\u00e0i c\u00f3 \u00fd ngh\u0129a v\u1ec1 m\u1eb7t sinh th\u00e1i t\u1ea1i c\u00e1c \u0111\u1ecba \u0111i\u1ec3m nghi\u00ean c\u1ee9u khi ch\u1ec9 s\u1ed1 IVI \u0111\u1ea1t t\u1eeb 17,4\/300 – 57,1\/300%, ph\u00e2n b\u1ed1 ng\u1eabu nhi\u00ean v\u00e0 tham gia v\u00e0o c\u1ea3 4 nh\u00f3m \u01b0u h\u1ee3p t\u1ea1i c\u00e1c \u0111\u1ecba \u0111i\u1ec3m nghi\u00ean c\u1ee9u. \u01af\u01a1i t\u00e1i sinh tham gia v\u00e0o t\u1ea5t c\u1ea3 c\u00e1c c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh c\u00e2y t\u00e1i sinh v\u1edbi h\u1ec7 s\u1ed1 \u0111\u1ea1t t\u1eeb 5,06 – 14,44% m\u1eb7c d\u00f9 m\u1eadt \u0111\u1ed9 t\u00e1i sinh kh\u00e1 th\u1ea5p (124 – 401 c\u00e2y\/ha) v\u00e0 100% l\u00e0 t\u00e1i sinh h\u1ea1t.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> L\u00e2m h\u1ecdc, mi\u1ec1n Trung, T\u00e2y Nguy\u00ean, \u01af\u01a1i<\/td>\n<\/tr>\n

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<\/a>Some silvicultural characteristics of scaphium macropodum. <\/em>miq at various Central Coastal and Central Highlands provinces<\/strong><\/p>\n

Research results on some silvicultural characteristics of Scaphium macropodum<\/em> showed that: this species is mainly distributed in evergreen broad leaves natural forests with an average density of 15 trees\/ha on both low and high hills where the altitude is from over 700 m to less than 1,000 m above sea level, the annual average temperature is from 23.3 to 24.1o<\/sup>C; The annual average precipitaiton is from 1,400 – 1,900 mm; The annual average humidity is from 70 to 86.1%. Scaphium macropodum<\/em> grows well on gray yellow feralite (Fq), red yellow on clay shale (Fs) and basalt (Fk) where the soil layer is over 80 cm, light to moderate mechanical composition, acidic soil (pH < 4), average total humus and protein content, poor extractable phosphorus and potassium. This species is ecologically significant at the study sites when the IVI index ranges from 17.4\/300% to 57.1\/300%, randomly distributed and participating in all 4 optimal groups at research locations. The regenerated seedlings participated in all regeneration tree formulas with the coefficient from 5.06% to 14.44% although the regeneration density is quite low (124 – 401 trees\/ha) and 100% is seed regeneration.<\/p>\n

Keywords:<\/em><\/strong> Keyword:<\/em><\/strong> Silviculture, Central Coastal Region, Central Highlands, Scaphium macropodum<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>TH\u1ef0C TR\u1ea0NG V\u00c0 \u0110\u1eb6C \u0110I\u1ec2M L\u1eacP \u0110\u1ecaA N\u01a0I TR\u1ed2NG D\u1eba V\u00c1N (Castanea mollissima<\/em> Blume) HI\u1ec6N NAY \u1ede HUY\u1ec6N NG\u00c2N S\u01a0N, T\u1ec8NH B\u1eaeC K\u1ea0N<\/p>\n

<\/a>L\u00ea V\u0103n Th\u00e0nh, Nguy\u1ec5n Ti\u1ebfn H\u01b0ng, Nguy\u1ec5n Quang D\u0169ng, T\u1ea1 V\u0103n H\u00e2n,
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh, \u0110inh Thanh Giang, H\u00e0 Th\u1ecb Thanh Mai<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

D\u1ebb v\u00e1n l\u00e0 lo\u00e0i c\u00e2y \u0111a m\u1ee5c \u0111\u00edch c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 kinh t\u1ebf cao, \u0111\u01b0\u1ee3c di th\u1ef1c v\u1ec1 tr\u1ed3ng \u1edf huy\u1ec7n Ng\u00e2n S\u01a1n t\u1eeb 40 n\u0103m tr\u01b0\u1edbc, \u0111\u1ec3 ph\u00e1t tri\u1ec3n m\u1edf r\u1ed9ng lo\u00e0i c\u00e2y n\u00e0y cho hi\u1ec7u qu\u1ea3, vi\u1ec7c \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m l\u1eadp \u0111\u1ecba n\u01a1i tr\u1ed3ng D\u1ebb v\u00e1n \u0111\u00e3 ra hoa k\u1ebft qu\u1ea3 \u1ed5n \u0111\u1ecbnh cho th\u1ea5y: Tr\u01b0\u1edbc \u0111\u00e2y ng\u01b0\u1eddi d\u00e2n tr\u1ed3ng ch\u1ee7 y\u1ebfu c\u00e2y gi\u1ed1ng t\u1eeb h\u1ea1t, 5 n\u0103m g\u1ea7n \u0111\u00e2y tr\u1ed3ng b\u1eb1ng c\u00e2y gh\u00e9p. D\u1ebb v\u00e1n r\u1ea5t th\u00edch h\u1ee3p v\u1edbi n\u01a1i tr\u1ed3ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 m\u00e1t v\u00e0 l\u1ea1nh (trung b\u00ecnh 20,70<\/sup>C\/n\u0103m), l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh 1.248,2 mm\/n\u0103m, \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed kh\u00e1 cao (83,0%\/n\u0103m), \u0111\u1ed9 cao > 700 m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n, \u0111\u1ed9 d\u1ed1c t\u1eeb th\u1ea5p \u0111\u1ebfn cao (\u2264 350<\/sup>), \u0111\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t \u1edf m\u1ee9c cao (90 – 100 cm); D\u1ebb v\u00e1n th\u00edch h\u1ee3p v\u1edbi n\u01a1i tr\u1ed3ng c\u00f3 \u0111\u1ed9 cao 300 – 700 m, \u0111\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t \u1edf m\u1ee9c trung b\u00ecnh (60 – 80 cm), \u0111\u1ed9 d\u1ed1c c\u0169ng t\u1eeb th\u1ea5p \u0111\u1ebfn cao; \u00edt th\u00edch h\u1ee3p \u1edf \u0111\u1ed9 cao 200 – 300 m, \u0111\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t \u1edf m\u1ee9c m\u1ecfng (30 – < 50 cm), \u0111\u1ed9 d\u1ed1c > 35 – 400<\/sup>; kh\u00f4ng n\u00ean tr\u1ed3ng \u1edf \u0111\u1ed9 cao d\u01b0\u1edbi 200 m, t\u1ea7ng \u0111\u1ea5t r\u1ea5t m\u1ecfng (< 30 cm), \u0111\u1ea5t qu\u00e1 d\u1ed1c (> 400<\/sup>). D\u1ebb v\u00e1n c\u00f3 th\u1ec3 tr\u1ed3ng tr\u00ean \u0111\u1ea5t c\u00f3 h\u00e0m l\u01b0\u1ee3ng m\u00f9n t\u1ed5ng s\u1ed1 t\u1eeb m\u1ee9c ngh\u00e8o tr\u1edf l\u00ean; h\u00e0m l\u01b0\u1ee3ng \u0111\u1ea1m t\u1ed5ng s\u1ed1 v\u00e0 l\u00e2n t\u1ed5ng s\u1ed1 t\u1eeb kh\u00e1 tr\u1edf l\u00ean, kali t\u1ed5ng s\u1ed1 \u1edf m\u1ee9c gi\u00e0u; h\u00e0m l\u01b0\u1ee3ng \u0111\u1ea1m d\u1ec5 ti\u00eau v\u00e0 kali d\u1ec5 ti\u00eau \u1edf m\u1ee9c d\u01b0\u1edbi trung b\u00ecnh, l\u00e2n d\u1ec5 ti\u00eau \u1edf m\u1ee9c r\u1ea5t ngh\u00e8o; trong th\u1eddi gian g\u00e2y tr\u1ed3ng D\u1ebb v\u00e1n, h\u00e0ng n\u0103m c\u1ea7n b\u00f3n b\u1ed5 sung ph\u00e2n NPK \u0111\u00e1p \u1ee9ng \u0111\u1ee7 nhu c\u1ea7u cho c\u00e2y ra hoa k\u1ebft qu\u1ea3. D\u1ebb v\u00e1n c\u00f3 th\u1ec3 tr\u1ed3ng cho hoa k\u1ebft qu\u1ea3 tr\u00ean \u0111\u1ea5t th\u1ecbt nh\u1eb9 pha c\u00e1t \u0111\u1ebfn th\u1ecbt n\u1eb7ng, th\u1eadm ch\u00ed l\u00e0 \u0111\u1ea5t s\u00e9t (h\u00e0m l\u01b0\u1ee3ng s\u00e9t \u0111\u1ebfn 48,39%).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u1ebb v\u00e1n (Castanea mollissima<\/em> Blume), nh\u00e2n gi\u1ed1ng, tr\u1ed3ng, l\u1eadp \u0111\u1ecba<\/td>\n<\/tr>\n

\n

<\/a>Status and characteristics of Castanea mollissima<\/em> Blume\u2019s planting site in Ngan Son district, Bac Kan province<\/strong><\/p>\n

Castanea mollissima<\/em> Blume is a multi-purpose tree with high economic value and was planted in Ngan Son district 40 years ago, to develop and expand this species for efficiency, assessment of status and characteristics of sites where it was planted and had stable development showed that: in the past, people planted mainly seedlings from seeds, in the last 5 years grafted trees were used. Castanea mollissima<\/em> is very suitable for areas with cool to cold temperatures (averagely 20.70<\/sup>C year), average rainfall of 1,248.2 mm\/year, relatively high air (83.0%\/year), altitude of >700 m above sea level, low to high slope (\u2264 350<\/sup>), deep soil profile (90 – 100 cm); The species is suitable for areas with the height of 300 – 700 m, medium soil profile (60 – 80 cm), low to high slope; It is less suitable at the height of 200 – 300 m, thin soil profile (30 – <50 cm), slope > 35 – 400<\/sup>; Should not be planted at altitudes below 200 m, very thin soil profile (<30 cm), too steep (> 400<\/sup>). This species can be grown on soils with a total humus content from poor to higher levels; the total nitrogen and total phosphorus content were fair or higher, total potassium was at the rich level; extractable protein and potassium contents were below average, extractible phosphorus was at very poor level; during the planting time, it is necessary to supplement with NPK fertilizer to meet the demand for flowering. Castanea mollissima <\/em>can be grown for production on light sandy soil to heavy silt or even clay (clay content of up to 48.39%).<\/p>\n

Keywords:<\/em><\/strong> Castanea mollissima<\/em> Blume, propagation, planting, site<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u00c1NH GI\u00c1 \u0110\u1eb6C \u0110I\u1ec2M \u0110\u1ea4T V\u00c0 L\u1eacP \u0110\u1ecaA TR\u1ed2NG PH\u1ee4C H\u1ed2I R\u1eeaNG NG\u1eacP M\u1eb6N D\u1ef0 \u00c1N GCF T\u1ea0I NAM \u0110\u1ecaNH, THANH H\u00d3A, QU\u1ea2NG NAM, QU\u1ea2NG NG\u00c3I V\u00c0 C\u00c0 MAU<\/p>\n

<\/a>Nguy\u1ec5n Th\u00f9y M\u1ef9 Linh, Ho\u00e0ng Vi\u1ec7t Anh, L\u00ea V\u0103n Th\u00e0nh,
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh, Ph\u1ea1m Th\u1ecb Ng\u00e2n<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Ph\u1ee5c h\u1ed3i r\u1eebng ng\u1eadp m\u1eb7n th\u00f4ng qua tr\u1ed3ng m\u1edbi v\u00e0 tr\u1ed3ng b\u1ed5 sung l\u00e0 m\u1ed9t trong ba k\u1ebft qu\u1ea3 mong \u0111\u1ee3i nh\u00e2n r\u1ed9ng c\u1ee7a d\u1ef1 \u00e1n GCF \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00ed \u0111i\u1ec3m t\u1ea1i 5 t\u1ec9nh Nam \u0110\u1ecbnh, Thanh H\u00f3a, Qu\u1ea3ng Nam, Qu\u1ea3ng Ng\u00e3i v\u00e0 C\u00e0 Mau. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba v\u00e0 \u0111\u1ea5t cho th\u1ea5y, c\u00e1c lo\u00e0i c\u00e2y thi\u1ebft k\u1ebf tr\u1ed3ng m\u1edbi v\u00e0 tr\u1ed3ng b\u1ed5 sung cho d\u1ef1 \u00e1n GCF \u1edf c\u00e1c t\u1ec9nh l\u00e0 ph\u00f9 h\u1ee3p. D\u1ea5u hi\u1ec7u \u0111\u1ea5t nhi\u1ec5m Acidic Sulfate (ASS) kh\u00f4ng c\u00f3 ho\u1eb7c kh\u00f4ng r\u00f5 r\u00e0ng \u1edf c\u00e1c t\u1ec9nh Nam \u0110\u1ecbnh, Thanh H\u00f3a, Qu\u1ea3ng Nam v\u00e0 Qu\u1ea3ng Ng\u00e3i v\u00e0 ch\u1ec9 \u0111\u01b0\u1ee3c ghi nh\u1eadn \u1edf t\u1ec9nh C\u00e0 Mau d\u01b0\u1edbi c\u1ea3 d\u1ea1ng ti\u1ec1m t\u00e0ng (PASS) v\u00e0 ho\u1ea1t \u0111\u1ed9ng (AASS), tuy nhi\u00ean \u1edf m\u1ee9c \u0111\u1ed9 th\u1ea5p \u0111\u1ebfn trung b\u00ecnh. H\u00e0m l\u01b0\u1ee3ng c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea1m v\u00e0 l\u00e2n d\u1ec5 ti\u00eau dao \u0111\u1ed9ng t\u1eeb trung b\u00ecnh \u0111\u1ebfn r\u1ea5t ngh\u00e8o v\u00e0 d\u01b0 th\u1eeba h\u00e0m l\u01b0\u1ee3ng c\u00e1c nguy\u00ean t\u1ed1 vi l\u01b0\u1ee3ng Cu, Zn, Fe, Mn trong c\u00e1c l\u1eadp \u0111\u1ecba thi\u1ebft k\u1ebf tr\u1ed3ng r\u1eebng ng\u1eadp m\u1eb7n c\u00f3 th\u1ec3 l\u00e0 nguy c\u01a1 g\u00e2y \u1ee9c ch\u1ebf kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y tr\u1ed3ng. H\u00e0m l\u01b0\u1ee3ng t\u1ed5ng ch\u1ea5t r\u1eafn h\u00f2a tan (TDS) trong n\u01b0\u1edbc x\u1ea3 th\u1ea3i t\u1eeb c\u00e1c \u0111\u1ea7m NTTS ch\u01b0a cho th\u1ea5y d\u1ea5u hi\u1ec7u g\u00e2y nguy h\u1ea1i cho c\u00e2y ng\u1eadp m\u1eb7n. C\u00e1c \u0111\u1ec1 xu\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u01b0a ra nh\u1eb1m ng\u0103n ng\u1eeba v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro c\u00f3 th\u1ec3 x\u1ea3y ra li\u00ean quan \u0111\u1ebfn ASS, h\u00e0m l\u01b0\u1ee3ng dinh d\u01b0\u1ee1ng v\u00e0 h\u00e0m l\u01b0\u1ee3ng TDS trong d\u00f2ng ch\u1ea3y c\u00e1c \u0111\u1ea7m nu\u00f4i tr\u1ed3ng th\u1ee7y s\u1ea3n.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110i\u1ec1u ki\u1ec7n \u0111\u1ea5t v\u00e0 l\u1eadp \u0111\u1ecba, tr\u1ed3ng m\u1edbi r\u1eebng ng\u1eadp m\u1eb7n, tr\u1ed3ng b\u1ed5 sung r\u1eebng ng\u1eadp m\u1eb7n<\/td>\n<\/tr>\n

\n

<\/a>Soil and site assessment for mangrove rehabilitation of GCF project in Nam Dinh, Thanh Hoa, Quang Nam, Quang Ngai and Ca Mau<\/strong><\/p>\n

Mangrove rehabilitation through new planting and supplementary planting is one of three targeted results of GCF project being piloted in five provinces of Nam Dinh, Thanh Hoa, Quang Nam, Quang Ngai and Ca Mau. The results of the assessment of site and soil conditions illustrated that mangrove species selected in the technical design are appropriate. Evidence of Acidic Sulfate Soil (ASS) is absent or unclear in Nam Dinh, Thanh Hoa, Quang Nam and Quang Ngai provinces and is only confirmed in Ca Mau province in both potential (PASS) and active (AASS) form, however in level of low to medium. Moderate to very poor concentrations of available nitrogen and phosphorus elements and excess concentrations of Cu, Zn, Fe and Mn trace elements could be a risk of mangrove tree growth. The total dissolved solids (TDS) content in the water of the outflow discharged from the aquaculture facilities has not indicated any sign of harm to the mangroves. Recommendations have been made to prevent and minimize potential risks associated with ASS, nutrient content and TDS from aquaculture facilities.<\/p>\n

Keywords:<\/em><\/strong> New plantation of mangroves, soil and site conditions, supplementary plantation of mangroves<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>TH\u1ef0C TR\u1ea0NG V\u00c0 GI\u1ea2I PH\u00c1P B\u1ea2O V\u1ec6, PH\u1ee4C H\u1ed2I V\u00c0 PH\u00c1T TRI\u1ec2N R\u1eeaNG PH\u00d2NG H\u1ed8 B\u1ec0N V\u1eeeNG\u00a0<\/a>V\u00d9NG C\u00c1T VEN BI\u1ec2N B\u1eaeC TRUNG B\u1ed8<\/p>\n

<\/a>Ng\u00f4 \u0110\u00ecnh Qu\u1ebf<\/p>\n

Vi\u1ec7n nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

C\u00e1c \u0111ai r\u1eebng ph\u00f2ng h\u1ed9 v\u00f9ng c\u00e1t ven bi\u1ec3n c\u00f3 vai tr\u00f2 v\u00e0 \u00fd ngh\u0129a quan tr\u1ecdng kh\u00f4ng ch\u1ec9 v\u1ec1 m\u1eb7t m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i to l\u1edbn m\u00e0 c\u00f2n c\u1ea3 v\u1ec1 m\u1eb7t kinh t\u1ebf – x\u00e3 h\u1ed9i. Gi\u00e1 tr\u1ecb m\u00f4i tr\u01b0\u1eddng th\u1ec3 hi\u1ec7n tr\u00ean c\u00e1c kh\u00eda c\u1ea1nh nh\u01b0 h\u1ea1n ch\u1ebf c\u00e1c t\u00e1c h\u1ea1i c\u1ee7a thi\u00ean tai, b\u00e3o l\u0169, c\u00e1t bay, c\u00e1t ch\u1ea3y, hoang m\u1ea1c h\u00f3a, v.v… \u0111\u1eb7c bi\u1ec7t trong b\u1ed1i c\u1ea3nh \u1ea3nh h\u01b0\u1edfng c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu. C\u00e1c t\u1ec9nh B\u1eafc Trung B\u1ed9 c\u00f3 kho\u1ea3ng 183.000 ha \u0111\u1ea5t c\u00e1t ven bi\u1ec3n, trong \u0111\u00f3 \u0111\u1ea5t c\u00e1t bi\u1ec3n (C) c\u00f3 110.560 ha, chi\u1ebfm t\u1ef7 l\u1ec7 cao nh\u1ea5t (64,41%), c\u1ed3n c\u00e1t (Cc) c\u00f3 69.740 ha, c\u1ed3n c\u00e1t v\u00e0ng (Cv) c\u00f3 2.650 ha v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 c\u1ed3n c\u00e1t bi\u1ec3n c\u00f3 62,8 ha. V\u1edbi y\u1ebfu \u0111\u1ed1 \u0111\u1eb7c th\u00f9 c\u1ee7a v\u00f9ng c\u00e1t ven bi\u1ec3n l\u00e0 th\u00e0nh ph\u1ea7n c\u1ea5p h\u1ea1t c\u1ee7a \u0111\u1ea5t c\u00e1t ven bi\u1ec3n c\u00f3 t\u1ef7 l\u1ec7 c\u00e1t chi\u1ebfm t\u1edbi 98%, ch\u1ee7 y\u1ebfu l\u00e0 h\u1ea1t c\u00e1t m\u1ecbn v\u00e0 c\u00e1t trung b\u00ecnh, h\u1ea7u nh\u01b0 thi\u1ebfu h\u1eb3n h\u1ea1t s\u00e9t v\u00e0 c\u00e1t \u1edf tr\u1ea1ng th\u00e1i r\u1eddi r\u1ea1c, d\u1ec5 di \u0111\u1ed9ng theo gi\u00f3, kh\u1ea3 n\u0103ng h\u1ea5p ph\u1ee5 c\u1ee7a \u0111\u1ea5t c\u00e1t k\u00e9m. Qu\u1ea3n l\u00fd b\u1ec1n v\u1eefng r\u1eebng ph\u00f2ng h\u1ed9 tr\u00ean \u0111\u1ea5t c\u00e1t c\u0103n c\u1ee9 tr\u00ean c\u00e1c c\u01a1 s\u1edf gi\u00e1 tr\u1ecb kinh t\u1ebf, m\u00f4i tr\u01b0\u1eddng, ph\u00e2n v\u00f9ng ph\u00f2ng h\u1ed9, quy ho\u1ea1ch c\u00e1c \u0111ai r\u1eebng ph\u00f2ng h\u1ed9 c\u00e1t v\u00f9ng ven bi\u1ec3n v\u00e0 x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh l\u00e0ng sinh th\u00e1i, c\u00e1c m\u00f4 h\u00ecnh d\u1ea3i r\u1eebng chuy\u00ean ph\u00f2ng h\u1ed9 ven bi\u1ec3n (ph\u00f2ng h\u1ed9 v\u00f9ng ngo\u00e0i, v\u00f9ng gi\u1eefa v\u00e0 ph\u00f2ng h\u1ed9 ven l\u00e0ng) ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1eb7c th\u00f9 c\u1ee7a c\u00e1c \u0111\u1ecba ph\u01b0\u01a1ng ven bi\u1ec3n. B\u00ean c\u1ea1nh \u0111\u00f3, \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t c\u00e1c gi\u1ea3i ph\u00e1p g\u00f3p ph\u1ea7n b\u1ea3o v\u1ec7, ph\u1ee5c h\u1ed3i v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng r\u1eebng ph\u00f2ng h\u1ed9 v\u00f9ng c\u00e1t ven bi\u1ec3n B\u1eafc Trung B\u1ed9, \u1ee9ng ph\u00f3 v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu, t\u1eeb c\u00e1c gi\u1ea3i ph\u00e1p quy ho\u1ea1ch s\u1eed d\u1ee5ng h\u1ee3p l\u00fd, hi\u1ec7u qu\u1ea3 \u0111\u1ea5t c\u00e1t ven bi\u1ec3n; \u0111\u1ebfn vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u01a1 c\u1ea5u c\u00e2y tr\u1ed3ng v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9 tr\u00ean c\u00e1c nh\u00f3m d\u1ea1ng l\u1eadp \u0111\u1ecba kh\u00e1c nhau ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1eb7c th\u00f9 c\u1ee7a t\u1eebng \u0111\u1ecba ph\u01b0\u01a1ng; v.v…<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ph\u1ee5c h\u1ed3i r\u1eebng, r\u1eebng ph\u00f2ng h\u1ed9, v\u00f9ng c\u00e1t ven bi\u1ec3n<\/td>\n<\/tr>\n

\n

<\/a>Current status and measures for protection, rehabilitation and sustainable development of protection forestsonsandy coastal area of the North Central Coast<\/strong><\/p>\n

The protection forests on sandy coastal area play a significant role in providing important ecologically environmental and social – economic benefits. The environmental benefits are refelected by several aspects such as reduction and mitigation of natural disasters, flood, sand moving and running, desertification, etc., particularly in the context of climate change. The North Central Coast has about 183,000 hectares of coastal sandy soils (Arenosols), of which sandy soils (C) covers largest area, with 110,560 hectare, accounting for 64.41%, sand dunes area (Cc) is 69,740 hectares, yellow sand dunes area (Cv) is 2,650 hectares and coastal sand dunes area is 62.8 hectares. As unique natural conditions, the coastal sandy soilscontain mainly sand particles which counts for about 98%. The particles are mostly medium and fine sized sands and very few clays that are easily moved and blown away by the the wind and its absorption capacity is very poor. The measures for protection, rehabilitation and sustainable management of protection forests on sandy areas considerits environmental and economic benefits, coastal area stratification, sandy soils classification and properties, planning of protection forests on cosatal sandy areas and results of ecological village model developed on coastal sandy areas across different localities.<\/p>\n

Keywords:<\/em><\/strong> Forest rehabilitation, protection forest, sandy coastal area<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>QU\u1ea2N L\u00dd T\u1ed4NG H\u1ee2P R\u1eeaNG NG\u1eacP M\u1eb6N \u1ee8NG PH\u00d3 BI\u1ebeN \u0110\u1ed4I KH\u00cd H\u1eacU: TH\u1ef0C TR\u1ea0NG V\u00c0 KHUY\u1ebeN NGH\u1eca CH\u00cdNH S\u00c1CH<\/p>\n

<\/a>V\u0169 T\u1ea5n Ph\u01b0\u01a1ng1<\/sup>, Nguy\u1ec5n Th\u00f9y M\u1ef9 Linh2<\/sup>,
\n\u0110\u00e0o L\u00ea Huy\u1ec1n Trang1<\/sup>, Nguy\u1ec5n V\u0103n Tr\u01b0\u1eddng1<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Vi\u1ec7t Nam l\u00e0 m\u1ed9t trong c\u00e1c qu\u1ed1c gia h\u00e0ng \u0111\u1ea7u d\u1ef1 ki\u1ebfn ch\u1ecbu t\u00e1c \u0111\u1ed9ng m\u1ea1nh nh\u1ea5t c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu. K\u1ebf ho\u1ea1ch qu\u1ed1c gia v\u1ec1 th\u00edch \u1ee9ng v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu giai \u0111o\u1ea1n 2021 – 2030 v\u00e0 t\u1ea7m nh\u00ecn \u0111\u1ebfn 2050 h\u01b0\u1edbng \u0111\u1ebfn n\u00e2ng cao qu\u1ea3n l\u00fd bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu, t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu v\u00e0 n\u0103ng l\u1ef1c th\u00edch \u1ee9ng c\u1ee7a c\u1ed9ng \u0111\u1ed3ng v\u00e0 c\u00e1c h\u1ec7 sinh th\u00e1i, gi\u1ea3m nh\u1eb9 r\u1ee7i ro thi\u00ean tai v\u00e0 c\u00e1c t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu. Qu\u1ea3n l\u00fd v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng r\u1eebng ng\u1eadp m\u1eb7n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong \u1ee9ng ph\u00f3 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu. B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch th\u1ef1c tr\u1ea1ng v\u00e0 c\u00e1c b\u1ea5t c\u1eadp qu\u1ea3n l\u00fd r\u1eebng ng\u1eadp m\u1eb7n, kh\u00e1i qu\u00e1t k\u1ebft qu\u1ea3 th\u00ed \u0111i\u1ec3m qu\u1ea3n l\u00fd t\u1ed5ng h\u1ee3p r\u1eebng ng\u1eadp m\u1eb7n \u1ee9ng ph\u00f3 v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu v\u00e0 \u0111\u1ec1 xu\u1ea5t c\u00e1c khuy\u1ebfn ngh\u1ecb ch\u00ednh s\u00e1ch v\u1ec1 qu\u1ea3n l\u00fd b\u1ec1n v\u1eefng r\u1eebng ng\u1eadp m\u1eb7n. K\u1ebft qu\u1ea3 cho th\u1ea5y qu\u1ea3n l\u00fd r\u1eebng ng\u1eadp m\u1eb7n hi\u1ec7n nay c\u00f2n nhi\u1ec1u b\u1ea5t c\u1eadp trong l\u1eadp quy ho\u1ea1ch, k\u1ebf ho\u1ea1ch v\u00e0 c\u00e1c ch\u00ednh s\u00e1ch qu\u1ea3n l\u00fd r\u1eebng ng\u1eadp m\u1eb7n. C\u00e1c \u00e1p l\u1ef1c suy gi\u1ea3m di\u1ec7n t\u00edch r\u1eebng ng\u1eadp m\u1eb7n l\u00e0 r\u1ea5t \u0111\u00e1ng k\u1ec3, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c \u00e1p l\u1ef1c t\u1eeb ph\u00e1t tri\u1ec3n kinh t\u1ebf x\u00e3 h\u1ed9i \u1edf v\u00f9ng ven bi\u1ec3n. Qu\u1ea3n l\u00fd t\u1ed5ng h\u1ee3p r\u1eebng ng\u1eadp m\u1eb7n \u1ee9ng ph\u00f3 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu \u0111\u1eb7t ra y\u00eau c\u1ea7u v\u1ec1 s\u1ef1 thay \u0111\u1ed5i trong quy ho\u1ea1ch, x\u00e2y d\u1ef1ng c\u00e1c ch\u00ednh s\u00e1ch khuy\u1ebfn kh\u00edch v\u00e0 th\u00fac \u0111\u1ea9y s\u1ef1 tham gia c\u1ee7a c\u1ed9ng \u0111\u1ed3ng trong qu\u1ea3n l\u00fd v\u00e0 ph\u00e1t tri\u1ec3n r\u1eebng ng\u1eadp m\u1eb7n. Ngo\u00e0i ra, c\u1ea7n huy \u0111\u1ed9ng v\u00e0 \u0111a d\u1ea1ng ngu\u1ed3n \u0111\u1ea7u t\u01b0 cho ph\u00e1t tri\u1ec3n sinh k\u1ebf, x\u00e2y d\u1ef1ng n\u0103ng l\u1ef1c cho c\u00e1c c\u1ed9ng \u0111\u1ed3ng ven bi\u1ec3n.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu, qu\u1ea3n l\u00fd t\u1ed5ng h\u1ee3p, r\u1eebng ng\u1eadp m\u1eb7n, th\u00edch \u1ee9ng bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu<\/td>\n<\/tr>\n

\n

<\/a>Integrated management of mangrove forests to respond to climate change: current situation and policy recommendations<\/strong><\/p>\n

Vietnam is one of the countries that are seen most vulnerable to climate change. National plan to adapt to climate change period 2021 – 2030 and vision to 2050 aims at improving climate change management, enhancing resilience and adaptive capacity of the local communities and ecosystems and mitigating natural disasters and negative impacts caused by climate change. Sustainable mangrove management and development play an important role in the response to climate change. This paper analyzes the current situation and shortcomings of mangrove management across levels, the results of pilot models on integrated management of mangrove forests for climate change adaptation and provides policy recommendations for sustainable mangrove management. The results show that the current mangrove management still faces a number of shortcomings and challenges in planning and policies on mangrove management. In the coming years, the pressures and threats for mangrove loss and degradation are significant, particularly pressures from socio-economic development in the coastal areas. Integrated management of mangrove forests for responding to climate change requires the changes in planning and development of policies to encourage and promote participation of local communities in mangrove management and development. In addition, it is necessary to mobilize and diversify investment sources for livelihood development and capacity building for coastal communities.<\/p>\n

Keywords:<\/em><\/strong> Climate change, climate change adaptation, integrated management, mangroves<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U HO\u00c0N THI\u1ec6N QUY TR\u00ccNH C\u00d4NG NGH\u1ec6 NH\u00c2N SINH KH\u1ed0I in vitro<\/em> N\u1ea4M R\u1ec4 N\u1ed8I C\u1ed8NG SINH AM (Arbuscular mycorrhiza)<\/em><\/p>\n

<\/a>V\u0169 Qu\u00fd \u0110\u00f4ng, L\u00ea Qu\u1ed1c Huy, L\u00ea Th\u1ecb Thu H\u1eb1ng<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Trong ph\u1ea1m vi b\u00e0i b\u00e1o n\u00e0y, ch\u00fang t\u00f4i tr\u00ecnh b\u00e0y gi\u1edbi thi\u1ec7u k\u1ebft qu\u1ea3 Ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc v\u1ec1 nghi\u00ean c\u1ee9u c\u1ea3i ti\u1ebfn quy tr\u00ecnh c\u00f4ng ngh\u1ec7 nh\u00e2n sinh kh\u1ed1i in vitro <\/em>n\u1ea5m r\u1ec5 n\u1ed9i c\u1ed9ng sinh (Arbuscular mycorrhiza<\/em>) cho s\u1ea3n xu\u1ea5t ch\u1ebf ph\u1ea9m AM. C\u00e1c th\u00ed nghi\u1ec7m bao g\u1ed3m: (i) Ph\u1ee5c tr\u00e1ng v\u00e0 t\u1ea1o m\u1edbi v\u1eadt li\u1ec7u g\u1ed1c gi\u00e1 th\u1ec3 r\u1ec5 c\u00e0 r\u1ed1t in vitro<\/em> mang gen sinh t\u00f3c r\u1ec5 Ri-tDNA, (ii) C\u1ea3i ti\u1ebfn m\u00f4i tr\u01b0\u1eddng MSR cho nh\u00e2n sinh kh\u1ed1i c\u1ed9ng sinh AM in vitro<\/em>, (iii) C\u1ea3i ti\u1ebfn k\u1ef9 thu\u1eadt nh\u00e2n c\u1ea5y – t\u1ea1o c\u1ed9ng sinh AM m\u1ed9t l\u1ea7n cho nh\u00e2n sinh kh\u1ed1i AM in vitro.<\/em> K\u1ebft qu\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 Quy tr\u00ecnh c\u00f4ng ngh\u1ec7 nh\u00e2n sinh kh\u1ed1i in vitro<\/em> c\u1ea3i ti\u1ebfn \u0111\u00e3 ph\u1ee5c tr\u00e1ng \u0111\u01b0\u1ee3c hi\u1ec7n t\u01b0\u1ee3ng gi\u00e0 h\u00f3a c\u1ee7a gi\u00e1 th\u1ec3 r\u1ec5 C\u00e0 r\u1ed1t. Quy tr\u00ecnh m\u1edbi \u0111\u00e3 c\u1ea3i ti\u1ebfn m\u00f4i tr\u01b0\u1eddng nu\u00f4i c\u1ea5y v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nh\u00e2n sinh kh\u1ed1i c\u1ed9ng sinh AM in vitro<\/em> t\u1ea1o nguy\u00ean li\u1ec7u cho s\u1ea3n xu\u1ea5t ch\u1ebf ph\u1ea9m AM. Quy tr\u00ecnh c\u1ea3i ti\u1ebfn \u0111\u00e3 t\u00e1c d\u1ee5ng l\u00e0m t\u0103ng h\u01a1n sinh kh\u1ed1i b\u00e0o t\u1eed AM trung b\u00ecnh 32% v\u00e0 r\u00fat ng\u1eafn \u0111\u01b0\u1ee3c th\u1eddi gian nh\u00e2n sinh kh\u1ed1i 1,5 th\u00e1ng so v\u1edbi quy tr\u00ecnh c\u0169.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> AM, Arbuscular mycorrhiza<\/em>, in vitro<\/em>, nh\u00e2n nhanh, sinh kh\u1ed1i AM<\/td>\n<\/tr>\n

\n

<\/a>Technology improvement for mass production of AM (Arbuscular mycorrhiza<\/em>) propagules in in vitro<\/em><\/strong><\/p>\n

In this article, we introduce main research achievement on the technology improvement for mass production of AM (Arbuscular mycorrhiza<\/em>) propagules in in vitro.<\/em> The research experiments include: (i) Restoring and creating new original root material Carrots in vitro<\/em> carrying the Ri-tDNA root hair gene, (ii) Improving MSR medium for multiply AM in vitro<\/em> biomass; (iii) Improving multiplication technology – creating AM symbiosis once for multiply AM in vitro<\/em> biomass. Results of the study is technological process in vitro<\/em> AM biomass improvements has restored the aging of carrot root. The new process has improved the culture media and the method of rapid propagation of the parent material of carrot root Ri-tDNA symbiosis AM to create raw materials for AM production. After applying the multiplication process in vitro<\/em> biomass AM has the effect of increasing AM spore biomass by an average of 32%, shortening the time of biomass multiplication by 1.5 months compared to the old process.<\/p>\n

Keywords:<\/em><\/strong> AM, AM biomass, Arbuscular mycorrhiza<\/em>, in vitro<\/em>, multiply<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/a>\u0110\u00c1NH GI\u00c1 T\u00c1C \u0110\u1ed8NG T\u1edaI M\u00d4I TR\u01af\u1edcNG SINH TH\u00c1I C\u1ee6A M\u1ed8T S\u1ed0 LO\u00c0I TH\u1ef0C V\u1eacT NGO\u1ea0I LAI T\u1ea0I VI\u1ec6T NAM<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Oanh1<\/sup>, Nguy\u1ec5n Th\u1ecb Tuy\u1ebft2<\/sup>, <\/sub>Tr\u1ea7n Trung Th\u00e0nh1<\/sup>,
\nNguy\u1ec5n Th\u1ecb Thu H\u1eb1ng1<\/sup>, <\/sub>Nguy\u1ec5n V\u0103n Ngh\u0129a1<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng
\n2 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Khoa h\u1ecdc, \u0110\u1ea1i h\u1ecdc Th\u00e1i Nguy\u00ean<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u b\u01b0\u1edbc \u0111\u1ea7u v\u1ec1 t\u00e1c \u0111\u1ed9ng t\u1edbi m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i c\u1ee7a 4 lo\u00e0i C\u1ecf l\u00e0o, C\u00fac li\u00ean chi, S\u00f2 \u0111o cam v\u00e0 Keo gi\u1eadu (\u0111\u00e3 \u0111\u01b0\u1ee3c ban h\u00e0nh trong danh m\u1ee5c c\u00e1c lo\u00e0i sinh v\u1eadt ngo\u1ea1i lai x\u00e2m h\u1ea1i v\u00e0 c\u00f3 nguy c\u01a1 x\u00e2m h\u1ea1i c\u1ee7a B\u1ed9 T\u00e0i nguy\u00ean M\u00f4i tr\u01b0\u1eddng (TNMT). K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, C\u1ecf l\u00e0o v\u00e0 C\u00fac li\u00ean chi c\u00f3 t\u00e1c \u0111\u1ed9ng 2 m\u1eb7t (ti\u00eau c\u1ef1c, t\u00edch c\u1ef1c) t\u1edbi t\u00ednh ch\u1ea5t l\u00fd h\u00f3a h\u1ecdc c\u1ee7a \u0111\u1ea5t. C\u1ee5 th\u1ec3, C\u1ecf l\u00e0o l\u00e0m gi\u1ea3m \u0111\u1ed9 pH v\u00e0 nit\u01a1 t\u1ed5ng s\u1ed1 c\u1ee7a \u0111\u1ea5t nh\u01b0ng l\u00e0m t\u0103ng \u0111\u1ed9 \u1ea9m v\u00e0 h\u00e0m l\u01b0\u1ee3ng M\u00f9n, ph\u1ed1t pho t\u1ed5ng s\u1ed1, kali t\u1ed5ng s\u1ed1. Ch\u1ec9 s\u1ed1 gi\u00e1 tr\u1ecb quan tr\u1ecdng c\u1ee7a lo\u00e0i C\u1ecf l\u00e0o \u0111\u1ea1t t\u1eeb 70,4 – 91,2%. \u0110\u1ed9 phong ph\u00fa \u0111\u1ea1t t\u1eeb 9,2 – 12,1 c\u00e1 th\u1ec3\/m2<\/sup>. C\u00fac li\u00ean chi l\u00e0m gi\u1ea3m \u0111\u1ed9 \u1ea9m c\u1ee7a \u0111\u1ea5t v\u00e0 l\u00e0m t\u0103ng \u0111\u1ed9 chua, h\u00e0m l\u01b0\u1ee3ng t\u1ed5ng s\u1ed1 c\u1ee7a m\u00f9n, nit\u01a1, ph\u1ed1t pho v\u00e0 kali trong \u0111\u1ea5t. Ch\u1ec9 s\u1ed1 gi\u00e1 tr\u1ecb quan tr\u1ecdng c\u1ee7a C\u00fac li\u00ean chi \u0111\u1ea1t t\u1eeb 11,4 – 87,2%. \u0110\u1ed9 phong ph\u00fa \u0111\u1ea1t t\u1eeb 2,0 – 15,8 c\u00e1 th\u1ec3\/m2<\/sup> t\u1ea1i c\u00e1c t\u1ec9nh nghi\u00ean c\u1ee9u. Hai lo\u00e0i n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i \u1edf n\u01b0\u1edbc ta v\u1edbi m\u1ee9c nguy c\u01a1 trung b\u00ecnh v\u00e0 \u00edt nguy hi\u1ec3m. S\u00f2 \u0111o cam l\u00e0m gi\u1ea3m \u0111\u1ed9 pHKCl<\/sub>, \u0111\u1ed9 \u1ea9m kh\u00f4 ki\u1ec7t, m\u00f9n t\u1ed5ng s\u1ed1, ph\u1ed1t pho t\u1ed5ng s\u1ed1 v\u00e0 kali t\u1ed5ng s\u1ed1. Tuy nhi\u00ean S\u00f2 \u0111o cam c\u00f3 th\u1ec3 l\u00e0m cho h\u00e0m l\u01b0\u1ee3ng nit\u01a1 t\u1ed5ng s\u1ed1 cao h\u01a1n so v\u1edbi trong c\u00e1c m\u1eabu \u0111\u1ea5t \u0111\u1ed1i ch\u1ee9ng. S\u00f2 \u0111o cam c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i sinh th\u1ea5p, ch\u01b0a xu\u1ea5t hi\u1ec7n trong r\u1eebng t\u1ef1 nhi\u00ean, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i \u1edf n\u01b0\u1edbc ta v\u1edbi m\u1ee9c nguy c\u01a1 r\u1ea5t th\u1ea5p v\u00e0 m\u1ee9c \u0111\u1ed9 x\u00e2m h\u1ea1i \u00edt nguy hi\u1ec3m. Keo gi\u1eadu l\u00e0m gi\u1ea3m \u0111\u1ed9 pH; t\u0103ng \u0111\u1ed9 \u1ea9m, h\u00e0m l\u01b0\u1ee3ng m\u00f9n t\u1ed5ng s\u1ed1, nit\u01a1 t\u1ed5ng s\u1ed1, ph\u1ed1t pho t\u1ed5ng s\u1ed1 v\u00e0 kali t\u1ed5ng s\u1ed1 cho \u0111\u1ea5t. Ch\u1ec9 s\u1ed1 gi\u00e1 tr\u1ecb quan tr\u1ecdng \u0111\u1ea1t t\u1eeb 15,0 – 22,1%. \u0110\u1ed9 phong ph\u00fa \u0111\u1ea1t t\u1eeb 6,1 – 11,7 c\u00e1 th\u1ec3\/m2<\/sup> t\u1ea1i c\u00e1c t\u1ec9nh nghi\u00ean c\u1ee9u, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i \u1edf n\u01b0\u1edbc ta v\u1edbi m\u1ee9c nguy c\u01a1 th\u1ea5p v\u00e0 m\u1ee9c \u0111\u1ed9 x\u00e2m h\u1ea1i l\u00e0 \u00edt nguy hi\u1ec3m.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ngo\u1ea1i lai, th\u1ef1c v\u1eadt ngo\u1ea1i lai x\u00e2m h\u1ea1i, x\u00e2m h\u1ea1i<\/td>\n<\/tr>\n

\n

<\/a>Assessing the impact on the ecological environment of some invasive and potenially invasive alien species in Vietnam<\/strong><\/p>\n

The paper presents the initial research results on the impact on the ecological environment (in particular, the physical and chemical properties of soil, indigenous species as well as biodiversity) of 4 species of Chromolaena odorata<\/em>, Parthenium hysterophorus<\/em>, Spathodea campanulata<\/em>, Leucaena leucocephala<\/em> (issued in the list of invasive and potentially invasive alien species of MONRE). The research results show that, Chromolaena odorata <\/em>and Parthenium hysterophorus<\/em> have two effects (negative, positive) on the physical and chemical properties of the soil. Specifically, Chromolaena odorata <\/em>reduces soil acidity and total nitrogen but increases moisture and content of humus, total phosphorus, and total potassium. The Important value index is from 70 – 91%. Abundance reaches from 9.17 to 12.13 individual\/m2<\/sup>. Parthenium hysterophorus<\/em> reduces soil pHKCL<\/sub>, moisture and increases the total content of humus, nitrogen, phosphorus and potassium in the soil. The important value index of Parthenium hysterophorus <\/em>is from 11 – 87%. Abundance reaches from 2.00 to 15.82 individual\/m2<\/sup> in the studied provinces. These two species affect the ecological environment in our country with medium risk and low risk. Spathodea campanulata <\/em>reduce pHKCL<\/sub>, humidity, total humus, total Phosphorus and total Potassium. However, Spathodea campanulata <\/em>can make total nitrogen content higher than in the control soil. Spathodea campanulata <\/em>have a low ability to regenerate in nature, have not appeared in natural forests, affecting the ecological environment in our country with a very low risk level and the level of invasion is less dangerous. Leucaena leucocephala <\/em>reduces acidity; increasing moisture, total humus content, total nitrogen, total Phosphorus and total Potassium for the soil. Important value index reaches from 15 – 22%. The abundance is from 6.09 to 11.67 individual\/m2<\/sup> in the study provinces, affecting the ecological environment in our country with low risk level and the level of invasion is less dangerous.<\/p>\n

Keywords:<\/em><\/strong> Exotic plants, invasive, invasive alien species<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>X\u00c2Y D\u1ef0NG T\u01af\u01a0NG QUAN GI\u1eeeA L\u01af\u1ee2NG M\u01afA V\u1edaI C\u00c1C Y\u1ebeU T\u1ed0 V\u00d2NG N\u0102M C\u1ee6A C\u00c2Y P\u01a0 MU T\u1ea0I HUY\u1ec6N V\u0102N B\u00c0N, T\u1ec8NH L\u00c0O CAI<\/p>\n

<\/a>\u0110inh Vi\u1ec7t H\u01b0ng1<\/sup>, Nguy\u1ec5n T\u1eed Kim2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng
\n2<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

V\u00f2ng t\u1eebng n\u0103m c\u1ee7a c\u00e2y l\u00e2u n\u0103m \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n nh\u01b0 l\u00e0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1eb7c bi\u1ec7t th\u1ec3 hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu (nh\u01b0 nhi\u1ec7t \u0111\u1ed9, m\u01b0a) trong l\u1ecbch s\u1eed. B\u00e0i b\u00e1o n\u00e0y tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 m\u1ed1i t\u01b0\u01a1ng quan gi\u1eefa l\u01b0\u1ee3ng m\u01b0a v\u1edbi \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m, t\u1ef7 tr\u1ecdng v\u00e0 nit\u01a1 t\u1ed5ng trong v\u00f2ng t\u1eebng n\u0103m c\u1ee7a c\u00e2y P\u01a1 mu \u1edf khu v\u1ef1c L\u00e0o Cai c\u00f3 \u0111\u1ed9 tu\u1ed5i tr\u00ean 400 n\u0103m. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, c\u00f9ng theo m\u1ed9t tr\u1ee5c th\u1eddi gian tr\u1edf v\u1ec1 tr\u01b0\u1edbc, gi\u1eefa l\u01b0\u1ee3ng m\u01b0a v\u00e0 \u0111\u1ed9 r\u1ed9ng (TRW-tree ring width) c\u00f3 m\u1ed1i t\u01b0\u01a1ng quan thu\u1eadn, h\u1ec7 s\u1ed1 t\u01b0\u01a1ng quan l\u00e0 R2<\/sup> = 0,62 v\u1edbi m\u1ee9c \u00fd ngh\u0129a 0,04; Gi\u1eefa l\u01b0\u1ee3ng m\u01b0a v\u00e0 t\u1ef7 tr\u1ecdng (TRD-tree ring density) t\u1ed3n t\u1ea1i m\u1ed1i t\u01b0\u01a1ng quan ngh\u1ecbch c\u00f3 h\u1ec7 s\u1ed1 t\u01b0\u01a1ng quan l\u00e0 R2 <\/sup>= 0,79 v\u1edbi m\u1ee9c \u00fd ngh\u0129a 0,04; Gi\u1eefa l\u01b0\u1ee3ng m\u01b0a v\u1edbi t\u1ed5ng nit\u01a1 (TRN-tree ring nitrogen) c\u0169ng l\u00e0 m\u1ed1i t\u01b0\u01a1ng quan ngh\u1ecbch c\u00f3 h\u1ec7 s\u1ed1 t\u01b0\u01a1ng quan l\u00e0 R2 <\/sup>= 0,81 v\u1edbi m\u1ee9c \u00fd ngh\u0129a 0,04. Nh\u01b0 v\u1eady, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng, gi\u1eefa l\u01b0\u1ee3ng m\u01b0a v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 h\u00f3a l\u00fd trong v\u00f2ng t\u1eebng n\u0103m c\u00e2y P\u01a1 mu c\u00f3 m\u1ed1i li\u00ean h\u1ec7 r\u1ea5t \u0111\u1eb7c bi\u1ec7t v\u00e0 nh\u01b0 v\u1eady r\u00f5 r\u00e0ng l\u00e0 v\u00f2ng t\u1eebng n\u0103m c\u1ee7a c\u00e2y r\u1eebng ph\u1ea3n \u00e1nh s\u1ef1 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu t\u1ea1i v\u00f9ng \u0111\u00f3. M\u1ed9t ph\u01b0\u01a1ng tr\u00ecnh m\u1ed1i t\u01b0\u01a1ng quan gi\u1eefa l\u01b0\u1ee3ng m\u01b0a v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 h\u00f3a l\u00fd trong v\u00f2ng t\u1eebng n\u0103m c\u00e2y P\u01a1 mu \u0111\u00e3 \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh v\u1edbi m\u1ee9c \u00fd ngh\u0129a 0,05. T\u1eeb TRW, TRD v\u00e0 TRN c\u00f3 th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c l\u01b0\u1ee3ng m\u01b0a trong l\u1ecbch s\u1eed.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu, l\u01b0\u1ee3ng m\u01b0a n\u0103m, v\u00f2ng h\u00e0ng n\u0103m, c\u00e2y P\u01a1 mu<\/td>\n<\/tr>\n

\n

<\/a>Establishment of rorrelation equations between rainfall parameters of annual tree ring of Fokienia hodginsii<\/em> in Van Ban district, Lao Cai province<\/strong><\/p>\n

The rings of long-lived trees have been regarded as a special database which represents the change of climate change such as temperature and rainfall. This paper shows research result of ralationship between rainfall and annual tree ring (width, density and total Nitrogen) of Fokienia hodginsii<\/em> in Lao Cai which was over 400 years old. It presents that with the same time chain in the pass, there is positive correlation between rainfall and tree ring width (TRW) (R2<\/sub> = 0,62); a negative correlation between rainfall and tree ring densitive (TRD) (R2<\/sup> = 0,79; and a negative correlation between rainfall and total Nitrogen (TRN) (R2<\/sup> = 0.81). Thus there are special relationship between rainfall and annual tree ring (TRW, TRD, TRN) of Fokienia hodginsii<\/em>. A correlation equation has built based on rainfall in the history and characteristics of annual tree ring of Fokienia (TRW, TRD, TRN) with meaning as 0.05.<\/p>\n

Keywords:<\/em><\/strong> Climate change, annual rainfall, tree ring, Fokienia hodginsii<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

<\/a>\u0110\u00c1NH GI\u00c1 DI\u1ec4N BI\u1ebeN M\u1ed8T S\u1ed0 Y\u1ebeU T\u1ed0 M\u00d4I TR\u01af\u1edcNG\u00a0T\u1ea0I C\u00c1C M\u00d4 H\u00ccNH R\u1eeaNG TR\u1ed2NG THU\u1ed8C KHU V\u1ef0C\u00a0PH\u00d2NG H\u1ed8 XUNG Y\u1ebeU VEN H\u1ed2 S\u00d4NG \u0110\u00c0 T\u1ec8NH H\u00d2A B\u00ccNH<\/p>\n

<\/a>Tr\u1ea7n V\u0103n Cao, Nguy\u1ec5n Th\u1ecb Oanh, Tr\u1ea7n Trung Th\u00e0nh,
\nNguy\u1ec5n V\u0103n Ngh\u0129a, Nguy\u1ec5n Thanh H\u1ea3i<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng t\u1ea1i khu v\u1ef1c ph\u00f2ng h\u1ed9 xung y\u1ebfu ven h\u1ed3 s\u00f4ng \u0110\u00e0 t\u1ec9nh H\u00f2a B\u00ecnh t\u1eeb n\u0103m 2006 \u0111\u1ebfn n\u0103m 2019. K\u1ebft qu\u1ea3 cho th\u1ea5y sau 15 n\u0103m tr\u1ed3ng, c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng t\u1ea1i c\u00e1c m\u00f4 h\u00ecnh \u0111\u00e3 c\u00f3 di\u1ec5n bi\u1ebfn theo h\u01b0\u1edbng t\u00edch c\u1ef1c. C\u1ee5 th\u1ec3, th\u1ea3m th\u1ef1c v\u1eadt c\u00f3 di\u1ec5n bi\u1ebfn t\u0103ng v\u1ec1 s\u1ed1 lo\u00e0i v\u00e0 \u0111\u1ed9 che ph\u1ee7 (\u0111\u1ea1t 36 – 44 lo\u00e0i, \u0111\u1ed9 che ph\u1ee7 73 – 85%), cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (28 lo\u00e0i, \u0111\u1ed9 che ph\u1ee7 61%). L\u01b0\u1ee3ng r\u01a1i r\u1ee5ng t\u0103ng m\u1ea1nh theo th\u1eddi gian, t\u1eeb 11,2 – 15,0 t\u1ea5n\/ha\/n\u0103m (tu\u1ed5i 15) trong khi \u0111\u1ed1i ch\u1ee9ng \u0111\u1ea1t 9,6 t\u1ea5n\/ha\/n\u0103m. L\u01b0\u1ee3ng d\u00f2ng ch\u1ea3y b\u1ec1 m\u1eb7t c\u00f3 xu h\u01b0\u1edbng gi\u1ea3m m\u1ea1nh, bi\u1ebfn \u0111\u1ed9ng t\u1eeb 115,2 – 140,0 m3<\/sup>\/ha\/n\u0103m (b\u1eb1ng 48,4 – 58,8% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng) v\u00e0 l\u01b0\u1ee3ng \u0111\u1ea5t x\u00f3i m\u00f2n, dao \u0111\u1ed9ng t\u1eeb 1,9 – 2,8 t\u1ea5n\/ha\/n\u0103m (b\u1eb1ng 48,2 – 78,7% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng). M\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t l\u00fd h\u00f3a h\u1ecdc c\u1ee7a \u0111\u1ea5t r\u1eebng t\u1ea1i c\u00e1c m\u00f4 h\u00ecnh ph\u1ee5c h\u1ed3i r\u1eebng cho th\u1ea5y c\u00f3 s\u1ef1 c\u1ea3i thi\u1ec7n, g\u1ed3m: \u0111\u1ed9 \u1ea9m, h\u00e0m l\u01b0\u1ee3ng m\u00f9n v\u00e0 \u0111\u1ea1m t\u1ed5ng s\u1ed1, l\u00e2n d\u1ec5 ti\u00eau. S\u1ed1 li\u1ec7u ph\u00e2n t\u00edch m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t \u0111\u1ea5t n\u0103m 2019 cho th\u1ea5y \u0111\u1ed9 \u1ea9m \u0111\u1ea5t bi\u1ebfn \u0111\u1ed9ng t\u1eeb 2,81 – 5,05%; h\u00e0m l\u01b0\u1ee3ng m\u00f9n t\u1ed5ng s\u1ed1 t\u1eeb 3,01 – 3,61%; h\u00e0m l\u01b0\u1ee3ng \u0111\u1ea1m t\u1ed5ng s\u1ed1 t\u1eeb 0,11 – 0,19%; l\u01b0\u1ee3ng l\u00e2n d\u1ec5 ti\u00eau l\u00e0 t\u1eeb 156,6 – 297,0 ppm; di\u1ec5n bi\u1ebfn c\u1ee7a l\u01b0\u1ee3ng kali d\u1ec5 ti\u00eau trong \u0111\u1ea5t kh\u00f4ng r\u00f5 quy lu\u1eadt, bi\u1ebfn \u0111\u1ed9ng t\u1eeb 23,12 – 45,78 ppm. B\u00ean c\u1ea1nh \u0111\u00f3, \u0111\u1ed9 chua c\u1ee7a \u0111\u1ea5t c\u00f3 di\u1ec5n bi\u1ebfn t\u0103ng nh\u01b0ng kh\u00f4ng \u0111\u00e1ng k\u1ec3 v\u00e0 \u0111\u1ea5t v\u1eabn c\u00f3 ph\u1ea3n \u1ee9ng chua m\u1ea1nh \u0111\u1ebfn chua (pH t\u1eeb 3,86 – 4,86). Nh\u00ecn chung trong c\u00e1c m\u00f4 h\u00ecnh ph\u1ee5c h\u1ed3i r\u1eebng, c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng c\u00f3 di\u1ec5n bi\u1ebfn theo chi\u1ec1u h\u01b0\u1edbng t\u00edch c\u1ef1c v\u00e0 r\u00f5 r\u00e0ng l\u00e0 t\u1ea1i m\u00f4 h\u00ecnh khoanh nu\u00f4i x\u00fac ti\u1ebfn t\u00e1i sinh tr\u1ed3ng b\u1ed5 sung v\u00e0 k\u00e9m nh\u1ea5t l\u00e0 t\u1ea1i m\u00f4 h\u00ecnh Lu\u1ed3ng thu\u1ea7n lo\u00e0i v\u00e0 m\u00f4 h\u00ecnh N\u00f4ng l\u00e2m k\u1ebft h\u1ee3p tr\u00ean \u0111\u1ea5t d\u1ed1c.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u00f2ng ch\u1ea3y m\u1eb7t, H\u00f2a B\u00ecnh, m\u00f4i tr\u01b0\u1eddng, ph\u1ee5c h\u1ed3i r\u1eebng, x\u00f3i m\u00f2n \u0111\u1ea5t<\/td>\n<\/tr>\n

\n

<\/a>Assessment of changes in several environmental factors associated with plantation forest models in critical protection areas in Da River reservoir of Hoa Binh province<\/strong><\/p>\n

The study was conducted on forest plantation models established in critical protection area of the Da river reservoir in Hoa Binh province from 2006 to 2019. The results show that the environmental factors in the forest restoration models have positively changed over 15 years. Specifically, the number of flora species and vegetation cover have increased significantly (36 – 44 species and 73 – 85% coverage) that are much higher than that of the control models (28 species, 61% coverage). The litter-fall stock has increased gradually, reaching 11.2 – 15.0 tons\/ha\/year (at the age of 15), while it was 9.6 tons\/ha\/year for control model. The amount of surface water run-off and soil loss indicate considerable decrease. The surface water run-off varies from 115.2 – 140.0 m3<\/sup>\/ha\/year (about 48.4 – 58.8% of control model) and soil loss amount is 1.9 – 2.8 tons\/ha\/year (equal to 48.2 – 78.7% of control model). Several soil physical and chemical properties were improved such as soil moisture, total humus and nitrogen content and available potassium content. In 2019, the soil moisture content ranges from 2.81 – 5.05%; total humus content is from 3.01 – 3.61%; total nitrogen content is between 0.11 – 0.19%; available phosphorus content is 156.6 – 297.0 ppm; and available potassium content proves no clear increasing and\/or decreasing trend in the soils under forest restoration models. Available phosphorus content is 23.12 – 45.78 ppm. However, the soil acidity is slightly changed, but it still has a strong acidic to acidic reaction (pH values are 3.86 – 4.86). Generally, the changes of environmental factors are associated with forest restoration models. The positive and clear environmental changes are recorded in the model of natural assisted regeneration with enrichment planting. However slight environmental changes are found in the restoration models of pure bamboo plantation (Dendrocalamus membranceus<\/em>) and agroforestry model on sloping land.<\/p>\n

Keywords:<\/em><\/strong> Environment, forest restoration, Hoa Binh, soil erosion, surface water run-off<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>CHI TR\u1ea2 D\u1ecaCH V\u1ee4 M\u00d4I TR\u01af\u1edcNG R\u1eeaNG QUA GIAO D\u1ecaCH \u0110I\u1ec6N T\u1eec<\/p>\n

<\/a>\u0110\u1eb7ng Quang H\u01b0ng1<\/sup>, \u0110\u1eb7ng Th\u00fay Nga2<\/sup>, Ho\u00e0ng Nguy\u1ec5n Vi\u1ec7t Hoa3<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng.
\n2<\/sup>Winrock International – D\u1ef1 \u00e1n R\u1eebng v\u00e0 \u0110\u1ed3ng b\u1eb1ng (VFD) t\u00e0i tr\u1ee3 b\u1edfi USAID
\n3<\/sup>Ban Khoa h\u1ecdc, \u0110\u00e0o t\u1ea1o v\u00e0 H\u1ee3p t\u00e1c qu\u1ed1c t\u1ebf, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

T\u1eeb khi tri\u1ec3n khai vi\u1ec7c chi tr\u1ea3 d\u1ecbch v\u1ee5 m\u00f4i tr\u01b0\u1eddng r\u1eebng (DVMTR) cho \u0111\u1ebfn nay, ti\u1ec1n DVMTR c\u1ee7a c\u00e1c ch\u1ee7 r\u1eebng l\u00e0 t\u1ed5 ch\u1ee9c \u0111\u01b0\u1ee3c Qu\u1ef9 B\u1ea3o v\u1ec7 v\u00e0 Ph\u00e1t tri\u1ec3n r\u1eebng (BV&PTR) c\u00e1c t\u1ec9nh th\u1ef1c hi\u1ec7n chi tr\u1ea3 qua t\u00e0i kho\u1ea3n ng\u00e2n h\u00e0ng. C\u00f2n l\u1ea1i, v\u1edbi h\u1ea7u h\u1ebft c\u00e1c ch\u1ee7 r\u1eebng ho\u1eb7c b\u00ean nh\u1eadn kho\u00e1n l\u00e0 h\u1ed9 gia \u0111\u00ecnh, c\u00e1 nh\u00e2n ho\u1eb7c c\u1ed9ng \u0111\u1ed3ng d\u00e2n c\u01b0 \u0111\u1ec1u \u0111\u01b0\u1ee3c Qu\u1ef9 BV&PTR c\u1ea5p t\u1ec9nh ho\u1eb7c ch\u1ee7 r\u1eebng l\u00e0 t\u1ed5 ch\u1ee9c chi tr\u1ea3 tr\u1ef1c ti\u1ebfp b\u1eb1ng ti\u1ec1n m\u1eb7t. Vi\u1ec7c n\u00e0y g\u00e2y m\u1ea5t r\u1ea5t nhi\u1ec1u th\u1eddi gian v\u00e0 nh\u00e2n l\u1ef1c, thi\u1ebfu s\u1ef1 minh b\u1ea1ch v\u00e0 ti\u1ec1m \u1ea9n nhi\u1ec1u r\u1ee7i ro trong qu\u00e1 tr\u00ecnh chi tr\u1ea3. T\u1eeb n\u0103m 2018, ngo\u00e0i vi\u1ec7c s\u1eed d\u1ee5ng t\u00e0i kho\u1ea3n ng\u00e2n h\u00e0ng, m\u1ed9t s\u1ed1 t\u1ec9nh c\u0169ng \u0111\u00e3 m\u1ea1nh d\u1ea1n \u00e1p d\u1ee5ng c\u00e1c h\u00ecnh th\u1ee9c chi tr\u1ea3 \u0111i\u1ec7n t\u1eed kh\u00e1c trong chi tr\u1ea3 ti\u1ec1n DVMTR, \u0111\u00f3 l\u00e0 S\u01a1n La, L\u00e2m \u0110\u1ed3ng v\u00e0 Y\u00ean B\u00e1i v\u00e0 ViettelPay[1]<\/sup><\/a> l\u00e0 c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn. K\u1ebft qu\u1ea3 kh\u1ea3o s\u00e1t \u0111\u00e1nh gi\u00e1 vi\u1ec7c tri\u1ec3n khai th\u00ed \u0111i\u1ec3m chi tr\u1ea3 ti\u1ec1n DVMTR qua ViettelPay cho th\u1ea5y h\u00ecnh th\u1ee9c n\u00e0y mang l\u1ea1i nhi\u1ec1u \u01b0u \u0111i\u1ec3m nh\u01b0: th\u1ee7 t\u1ee5c \u0111\u0103ng k\u00fd \u0111\u01a1n gi\u1ea3n, nhanh g\u1ecdn, qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng ViettelPay r\u1ea5t thu\u1eadn l\u1ee3i gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u00ednh minh b\u1ea1ch, an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 trong qu\u00e1 tr\u00ecnh t\u1ed5 ch\u1ee9c tr\u1ea3 ti\u1ec1n DVMTR. C\u00f3 t\u1edbi 63,4% c\u00e1c h\u1ed9 nh\u1eadn ti\u1ec1n qua ViettelPay \u0111\u00e1nh gi\u00e1 \u1edf m\u1ee9c \u0111\u1ed9 h\u00e0i l\u00f2ng v\u00e0 r\u1ea5t h\u00e0i l\u00f2ng. Ch\u1ec9 c\u00f3 3,6% ch\u01b0a h\u00e0i l\u00f2ng do s\u1ed1 ti\u1ec1n h\u1ecd nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb DVMTR \u00edt v\u00e0 th\u00f3i quen th\u00edch s\u1eed d\u1ee5ng ti\u1ec1n m\u1eb7t. T\u1eeb k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra n\u00e0y, c\u00e1c Qu\u1ef9 B\u1ea3o v\u1ec7 v\u00e0 Ph\u00e1t tri\u1ec3n r\u1eebng c\u1ee7a t\u1ec9nh v\u00e0 c\u00e1c ch\u1ee7 r\u1eebng l\u00e0 t\u1ed5 ch\u1ee9c c\u00f3 kho\u00e1n qu\u1ea3n l\u00fd b\u1ea3o v\u1ec7 r\u1eebng c\u0103n c\u1ee9 v\u00e0o \u0111\u1eb7c \u0111i\u1ec3m c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn, \u00e1p d\u1ee5ng v\u00e0 nh\u00e2n r\u1ed9ng h\u00ecnh th\u1ee9c chi tr\u1ea3 ti\u1ec1n DVMTR qua ViettelPay.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Chi tr\u1ea3 \u0111i\u1ec7n t\u1eed, b\u1ea3o v\u1ec7 r\u1eebng, d\u1ecbch v\u1ee5 m\u00f4i tr\u01b0\u1eddng r\u1eebng, Viettelpay<\/td>\n<\/tr>\n

\n

<\/a>E-payment application in payment for forest environment service (PFES)<\/strong><\/p>\n

Up to date, only the forest owners who are organizations have received PFES through banking payment transactions. Other forest owners (households, individuals, communities etc.) commonly receive the PFES payment in cash. This takes a lot of time and manpower, lacks transparency, and contains potential risks. Since 2018, in addition to banking payment, Forest Protection and Development Funds (FPDF) in several provinces are applying electronic payment tools to deliver PFES payment. These provinces are Son La, Lam Dong and Yen Bai. Of the electronic payment tools, ViettelPay has become a popular tool in making PFES payment by FPDFs. The PFES payment using ViettelPay brings different benefits such as simple registration procedures, convenience, safety and efficiency in using, and improved transparency. Up to 63.4% of households receiving the PFES money through ViettelPay rated it as a satisfied and very satisfied tool. Only 3.6% of them are not satisfied as small payment amount and they prefer to use cash. The results imply that the Provincial FPDFs and forest owners should consider their conditions to apply ViettelPay as an alternative tool for paying PFES money.<\/p>\n

Keywords:<\/em><\/strong> E-payment, forest protetcion, PFES, ViettelPay<\/td>\n<\/tr>\n

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

<\/a>CHI TI\u00caU C\u00d4NG CHO \u0110A D\u1ea0NG SINH H\u1eccC GIAI \u0110O\u1ea0N 2011 – 2015<\/p>\n

<\/a>Tr\u1ea7n Th\u1ecb Thu H\u00e01<\/sup> v\u00e0 Nguy\u1ec5n Thanh S\u01a1n2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng
\n2<\/sup>Vi\u1ec7n Kinh t\u1ebf ch\u00ednh tr\u1ecb h\u1ecdc, H\u1ecdc vi\u1ec7n Ch\u00ednh tr\u1ecb Qu\u1ed1c gia H\u1ed3 Ch\u00ed Minh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch chi ti\u00eau c\u1ee7a c\u00e1c c\u01a1 quan, \u0111\u01a1n v\u1ecb c\u00f3 ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd nh\u00e0 n\u01b0\u1edbc v\u1ec1 \u0111a d\u1ea1ng sinh h\u1ecdc (\u0110DSH) cho th\u1ea5y c\u00e1c c\u01a1 quan, \u0111\u01a1n v\u1ecb n\u00e0y \u0111\u00e3 chi ti\u00eau kho\u1ea3ng 17,6 ngh\u00ecn t\u1ef7 \u0111\u1ed3ng (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 0,12% GDP v\u00e0 23,5% m\u1ee9c chi ti\u00eau cho s\u1ef1 nghi\u1ec7p m\u00f4i tr\u01b0\u1eddng) cho \u0110DSH trong giai \u0111o\u1ea1n 2011 – 2015. Tr\u00ean 90% kho\u1ea3n chi n\u00e0y c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb ng\u00e2n s\u00e1ch Nh\u00e0 n\u01b0\u1edbc. \u0110\u00e2y l\u00e0 s\u1ef1 n\u1ed7 l\u1ef1c \u0111\u1ed3ng th\u1eddi l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c \u0111\u00e1ng k\u1ec3 trong t\u01b0\u01a1ng lai \u0111\u1ed1i v\u1edbi m\u1ed9t \u0111\u1ea5t n\u01b0\u1edbc \u0111ang ph\u00e1t tri\u1ec3n v\u1edbi n\u1ec1n kinh t\u1ebf c\u00f2n g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n. B\u00ean c\u1ea1nh \u0111\u00f3, k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch c\u0169ng cho th\u1ea5y tr\u00ean 50% kho\u1ea3n chi ti\u00eau c\u00f4ng cho \u0110DSH \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 b\u1ea3o t\u1ed3n c\u00e1c h\u1ec7 sinh th\u00e1i t\u1ef1 nhi\u00ean. Tuy nhi\u00ean, hi\u1ec7u qu\u1ea3 chi ti\u00eau ch\u01b0a th\u1ef1c s\u1ef1 cao v\u00ec theo \u0111\u00e1nh gi\u00e1 c\u1ee7a B\u1ed9 T\u00e0i nguy\u00ean v\u00e0 M\u00f4i tr\u01b0\u1eddng (2005) do \u0111a d\u1ea1ng sinh h\u1ecdc t\u1ea1i Vi\u1ec7t Nam li\u00ean t\u1ee5c b\u1ecb suy gi\u1ea3m trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y: (i) C\u00e1c h\u1ec7 sinh th\u00e1i r\u1eebng gi\u1ea3m c\u1ea3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng; (ii) S\u1ef1 \u00f4 nhi\u1ec5m ng\u00e0y c\u00e0ng t\u0103ng v\u1ec1 m\u1ee9c \u0111\u1ed9, n\u1ed3ng \u0111\u1ed9 v\u00e0 \u0111\u1ed9c t\u00ednh c\u1ee7a h\u1ec7 sinh th\u00e1i n\u01b0\u1edbc ng\u1ecdt n\u1ed9i \u0111\u1ecba, ch\u1ea5t th\u1ea3i t\u1eeb s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p c\u0169ng nh\u01b0 do s\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c l\u01b0\u1ee3ng ph\u00e2n b\u00f3n h\u00f3a h\u1ecdc v\u00e0 thu\u1ed1c tr\u1eeb s\u00e2u trong s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p; v\u00e0 (iii) C\u00e1c h\u1ec7 sinh th\u00e1i bi\u1ec3n v\u00e0 ven bi\u1ec3n li\u00ean t\u1ee5c b\u1ecb chuy\u1ec3n \u0111\u1ed5i v\u00e0 khai th\u00e1c qu\u00e1 m\u1ee9c khi\u1ebfn c\u00e1c lo\u00e0i qu\u00fd hi\u1ebfm, c\u00f3 nguy c\u01a1 tuy\u1ec7t ch\u1ee7ng \u0111ang ti\u1ebfp t\u1ee5c t\u0103ng l\u00ean. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee5c ti\u00eau \u0111\u1ec1 ra trong Chi\u1ebfn l\u01b0\u1ee3c qu\u1ed1c gia v\u1ec1 \u0110DSH \u0111\u1ebfn n\u0103m 2020, t\u1ea7m nh\u00ecn \u0111\u1ebfn n\u0103m 2030, Vi\u1ec7t Nam c\u1ea7n c\u00f3 chi\u1ebfn l\u01b0\u1ee3c h\u1ee3p l\u00fd nh\u1eb1m huy \u0111\u1ed9ng th\u00eam c\u00e1c d\u00f2ng t\u00e0i ch\u00ednh ngo\u00e0i ng\u00e2n s\u00e1ch v\u00e0 c\u1ea3i thi\u1ec7n t\u00ednh hi\u1ec7u qu\u1ea3 trong vi\u1ec7c chi ti\u00eau cho \u0110DSH \u1edf c\u1ea3 c\u1ea5p Trung \u01b0\u01a1ng l\u1eabn c\u1ea5p \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Chi ti\u00eau c\u00f4ng, chi\u1ebfn l\u01b0\u1ee3c qu\u1ed1c gia v\u1ec1 \u0111a d\u1ea1ng sinh h\u1ecdc, \u0111a d\u1ea1ng sinh h\u1ecdc<\/td>\n<\/tr>\n

\n

<\/a>Public expenditure on biodiversity in the period of 2011 – 2015<\/strong><\/p>\n

The analysis of expenditure of organizations with legally designated primary functions and task for biodiversity management in Vietnam showed that between 2011 and 2015, these organizations spent around VND 17,6 thousand billion (equivalent to 0.12% of GDP and 23,5% of environmental spending) on biodiversity. More than 90% of the spending came from state budget. This is a true challenge for Vietnam – a developing country with limited economic resources. The study results also showed that more than 50% of public spending on biodiversity was for conservation of natural ecosystems. However, the efficiency of spending was questionable because arcording to Ministry of Natural Resources and Environment (2015), biodiversity in Viet Nam had continued to degrade, as evidenced by (i) The reduction in both quantity and quality of forest ecosystems; (ii) The increasing pollution – in load, concentration and toxicity – of inland water ecosystems by waste of industrial and domestic origin, as well as by chemical fertilizers and pesticides in agriculture; and (iii) The continuing transformation, overexploitation and habitat loss in marine and coastal ecosystems, increasing the risks of extinction of rare, precious and endangered species (MONRE, 2015). To achieve targets outlined in the Vietnam National Biodiversity Strategy to 2020 with vision 2030, Vietnam needs to develop a proper strategy for mobilizing non-state funding resources and improving the efficiency of biodiversity expenditure at both national and local levels.<\/p>\n

Keywords:<\/em><\/strong> Public expenditure, national biodiversity strategy, biodiversity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>TI\u1ec0M N\u0102NG PH\u00c1T TRI\u1ec2N C\u00c1C LO\u00c0I C\u00c2Y TR\u1ed2NG R\u1eeaNG G\u1ed6 L\u1edaN T\u1ea0I T\u1ec8NH B\u1eaeC K\u1ea0N<\/p>\n

<\/a>\u0110\u1eb7ng Quang H\u01b0ng, V\u0169 Qu\u00fd \u0110\u00f4ng,
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh, Nguy\u1ec5n Xu\u00e2n \u0110\u00e0i<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 kh\u1ea3o s\u00e1t \u0111\u00e1nh gi\u00e1 m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y l\u00e2m nghi\u1ec7p \u0111ang \u0111\u01b0\u1ee3c tr\u1ed3ng tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh B\u1eafc K\u1ea1n. So s\u00e1nh v\u1edbi c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y n\u00e0y cho th\u1ea5y c\u00e1c \u0111\u1ecba \u0111i\u1ec3m tr\u1ed3ng ch\u1ec9 \u0111\u1ea1t \u1edf m\u1ee9c \u0111\u1ed9 th\u00edch h\u1ee3p th\u1ea5p (S3) ho\u1eb7c trung b\u00ecnh (S2). Tuy nhi\u00ean k\u1ebft qu\u1ea3 \u0111o \u0111\u1ebfm \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng \u1edf m\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh r\u1eebng l\u1ea1i cho k\u1ebft qu\u1ea3 c\u00e1c lo\u00e0i c\u00e2y nh\u01b0: M\u1ee1, L\u00e1t, Tr\u00e1m, Gi\u1ed5i c\u00f3 t\u1ed1c \u0111\u1ed9 sinh tr\u01b0\u1edfng kh\u00e1 t\u1ed1t. T\u0103ng tr\u01b0\u1edfng trung b\u00ecnh c\u1ee7a c\u00e2y \u0111\u1ea1t t\u1edbi 0,012 – 0,019 m3<\/sup>\/n\u0103m, \u0111\u00e2y l\u00e0 sinh tr\u01b0\u1edfng \u1edf m\u1ee9c \u0111\u1ed9 kh\u00e1 c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba. V\u1ec1 k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch \u0111\u1ea5t t\u1ea1i c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng cho th\u1ea5y \u1edf \u0111\u00e2y ch\u1ee7 y\u1ebfu l\u00e0 \u0111\u1ea5t \u0111\u1ecf v\u00e0ng tr\u00ean \u0111\u00e1 s\u00e9t v\u00e0 bi\u1ebfn ch\u1ea5t, \u0111\u1ea5t h\u01a1i ch\u1eb7t v\u00e0 chua (pHKCl<\/sub>: 3 – 4), c\u00e1c ch\u1ec9 s\u1ed1 P2<\/sub>O5<\/sub> \u1edf m\u1ee9c gi\u00e0u P, c\u00e1c ch\u1ec9 s\u1ed1 K v\u00e0 N \u1edf m\u1ee9c \u0111\u1ed9 trung b\u00ecnh. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch h\u00f3a t\u00ednh c\u1ee7a \u0111\u1ea5t \u1edf \u0111\u00e2y cho th\u1ea5y s\u1ef1 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba \u0111ang \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng. K\u1ebft h\u1ee3p c\u00e1c k\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 v\u1ec1 sinh tr\u01b0\u1edfng, \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba v\u00e0 k\u1ebft qu\u1ea3 ph\u1ecfng v\u1ea5n ng\u01b0\u1eddi d\u00e2n \u0111\u1ecba ph\u01b0\u01a1ng v\u1ec1 c\u00e1c lo\u00e0i c\u00e2y c\u00f3 kh\u1ea3 n\u0103ng tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c m\u1ed9t danh m\u1ee5c c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 ti\u1ec1m n\u0103ng tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn cho t\u1eebng v\u00f9ng t\u1ea1i t\u1ec9nh B\u1eafc K\u1ea1n.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ch\u1ecdn lo\u00e0i c\u00e2y tr\u1ed3ng, c\u00e2y g\u1ed7 l\u1edbn, l\u1eadp \u0111\u1ecba c\u00e2y g\u1ed7 l\u1edbn<\/td>\n<\/tr>\n

\n

<\/a>Selection of the potential species for large-wood afforestation in Bac Kan province<\/strong><\/p>\n

The study presents the results of evaluation of some forest tree species being planted in Bac Kan province. Comparing with the site conditions standard of tree species shows that the current planting sites haven\u2019t really been applicable for these species. The appropriateness of site condition for these species is only low (S3) or moderate (S2). Nevertheless, measruring the growth of some models illustrated that Manglietia, Chukrasia, Canarium and Magnolia have grown quite well. The average growth of these species reaches 0.012 – 0.019 m3<\/sup>\/tree\/year. Thus, if the density of planted tree is at 1.000 trees\/ha, the yield can reach 12 – 19 m3<\/sup>\/ha\/year, equivalent to a decent growth rate of the native species. In addition, soil analysis results show that there are mainly yellow red soil on clay and metamorphic rocks, slightly tight and acidic soil (pHKCl<\/sub>: 3 – 4). The content of P of P2<\/sub>O5<\/sub> is rich and the content of K and N are moderate. It means that soil content and characteristic is quite suitable for the mentioned native tree species. Thus, from the the assessment results of tree growth and site conditions, combining with interviews local people, the research team built a list of potential native species for large-wood development in Bac Kan province.<\/p>\n

Keywords:<\/em><\/strong> Species selection, large-wood, site condition<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u00c1NH GI\u00c1 HI\u1ec6U QU\u1ea2 C\u00c1C M\u00d4 H\u00ccNH PH\u1ee4C H\u1ed2I R\u1eeaNG PH\u00d2NG H\u1ed8 T\u1ea0I X\u00c3 X\u0102M KH\u00d2E, HUY\u1ec6N MAI CH\u00c2U, T\u1ec8NH H\u00d2A B\u00ccNH<\/p>\n

<\/a>L\u00ea Th\u1ecb Thu H\u1eb1ng, L\u00ea Qu\u1ed1c Huy, V\u0169 Qu\u00fd \u0110\u00f4ng<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Ph\u1ee5c h\u1ed3i r\u1eebng l\u00e0 n\u1ed9i dung nh\u1eadn \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u s\u1ef1 quan t\u00e2m c\u1ee7a c\u00e1c t\u1ed5 ch\u1ee9c v\u00e0 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u, \u0111\u00e2y l\u00e0 c\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1ec3 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh ph\u00f9 h\u1ee3p cho t\u1eebng \u0111\u1ed1i t\u01b0\u1ee3ng. Nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 t\u00e1c \u0111\u1ed9ng c\u1ee7a ph\u1ee5c h\u1ed3i r\u1eebng t\u1edbi \u0111a d\u1ea1ng sinh h\u1ecdc th\u1ea3m th\u1ef1c v\u1eadt, b\u1ea3o v\u1ec7 \u0111\u1ea5t v\u00e0 ngu\u1ed3n n\u01b0\u1edbc l\u00e0 b\u01b0\u1edbc r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 s\u1ef1 th\u00e0nh c\u00f4ng c\u0169ng nh\u01b0 hi\u1ec7u qu\u1ea3 c\u1ee7a m\u00f4 h\u00ecnh ph\u1ee5c h\u1ed3i r\u1eebng. V\u00ec v\u1eady, nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u1ef1a tr\u00ean 4 \u00f4 ti\u00eau chu\u1ea9n (OTC) \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp t\u1ea1i x\u00e3 X\u0103m Kh\u00f2e, huy\u1ec7n Mai Ch\u00e2u, t\u1ec9nh H\u00f2a B\u00ecnh nh\u1eb1m theo d\u00f5i qu\u00e1 tr\u00ecnh ph\u1ee5c h\u1ed3i r\u1eebng trong giai \u0111o\u1ea1n t\u1eeb 2016 \u0111\u1ebfn 2019 v\u1edbi 2 n\u1ed9i dung: (i) Nghi\u00ean c\u1ee9u t\u00e1c \u0111\u1ed9ng c\u1ee7a ph\u1ee5c h\u1ed3i r\u1eebng t\u1edbi \u0111a d\u1ea1ng sinh h\u1ecdc th\u1ea3m th\u1ef1c v\u1eadt v\u00e0 (ii) Nghi\u00ean c\u1ee9u t\u00e1c \u0111\u1ed9ng c\u1ee7a ph\u1ee5c h\u1ed3i r\u1eebng t\u1edbi b\u1ea3o v\u1ec7 \u0111\u1ea5t v\u00e0 n\u01b0\u1edbc. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 ch\u1ec9 ra hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c m\u00f4 h\u00ecnh ph\u1ee5c h\u1ed3i tr\u1ed3ng l\u00e0m gi\u00e0u trong \u0111\u00f3: \u0110\u1ed9 t\u00e0n che l\u00e2m ph\u1ea7n \u0111\u1ea1t 89 – 93%, k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u1ec1 s\u1ed1 c\u00e2y theo c\u1ea5p \u0111\u01b0\u1eddng k\u00ednh cho th\u1ea5y s\u1ef1 ph\u00e1t tri\u1ec3n l\u00e2m ph\u1ea7n \u1edf \u0111\u1ecba \u0111i\u1ec3m nghi\u00ean c\u1ee9u l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i \u1ed5n \u0111\u1ecbnh, OTC c\u00f3 t\u00e1c \u0111\u1ed9ng tr\u1ed3ng bao g\u1ed3m OTC 1, 2, 4 c\u00f3 ch\u1ec9 s\u1ed1 \u0111a d\u1ea1ng sinh h\u1ecdc H\u2019 cao h\u01a1n so v\u1edbi OTC 3 – t\u00e1i sinh t\u1ef1 nhi\u00ean; \u1edf c\u1ea3 3 OTC n\u00e0y \u0111\u1ec1u kh\u00f4ng c\u00f3 lo\u00e0i chi\u1ebfm gi\u00e1 tr\u1ecb IV % qu\u00e1 cao trong d\u00e3y tr\u1eadt t\u1ef1 \u01b0u th\u1ebf, c\u1ea1nh tranh l\u1ea5n \u00e1t sinh tr\u01b0\u1edfng c\u00e1c lo\u00e0i kh\u00e1c. B\u00ean c\u1ea1nh \u0111\u00f3 nghi\u00ean c\u1ee9u \u0111\u00e3 cho th\u1ea5y d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a ph\u1ee5c h\u1ed3i r\u1eebng, l\u01b0\u1ee3ng \u0111\u1ea5t m\u1ea5t do x\u00f3i m\u00f2n t\u1ea1i \u0111\u00e2y kh\u00f4ng cao, n\u1eb1m trong kho\u1ea3ng 1,00 – 3,00 t\u1ea5n\/ha\/n\u0103m, l\u01b0\u1ee3ng d\u00f2ng ch\u1ea3y b\u1ec1 m\u1eb7t t\u01b0\u01a1ng \u0111\u1ed1i nh\u1ecf t\u1eeb 325 \u0111\u1ebfn 800 m3<\/sup>\/ha\/n\u0103m. \u0110\u00e2y l\u00e0 nh\u1eefng \u0111\u00e1nh gi\u00e1 c\u00f3 \u00fd ngh\u0129a g\u00f3p ph\u1ea7n l\u00e0m s\u00e1ng t\u1ecf \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i, \u0111\u1ea5t, n\u01b0\u1edbc v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i r\u1eebng t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ch\u1ec9 s\u1ed1 \u0111a d\u1ea1ng sinh h\u1ecdc lo\u00e0i, d\u00f2ng ch\u1ea3y b\u1ec1 m\u1eb7t, gi\u00e1 tr\u1ecb quan tr\u1ecdng, ph\u1ee5c h\u1ed3i r\u1eebng, x\u00f3i m\u00f2n \u0111\u1ea5t.<\/td>\n<\/tr>\n

\n

<\/a>Assessing the effectiveness of protection forest rehabilitation models in Xam Khoe commune, Mai Chau district, Hoa Binh province<\/strong><\/p>\n

Forest restoration has received a lot of attention from organizations and scientists, and is considered the basis for applying silvicultural techniques suitable for each subject. Assessing the impact of forest restoration on vegetation biodiversity, soil and water protection is an important step to assess the success and effectiveness of forest restoration models. Therefore, this study was conducted based on 4 sample plots established in Xam Khoe commune, Mai Chau district, Hoa Binh province to monitor the restoration process in 4 – year period from 2016 to 2019 with 2 contents: (i) Study the impact of forest restoration on vegetation biodiversity and (ii) Study the impact of forest restoration on soil and water protection. The research results showed the effectiveness of enrichment planting models has increased the biodiversity of vegetation including: Increasing the forest cover to 89 – 93%; results of data analysis on the number of trees by diameter class showed that forest stand development at the study site is relatively stable; plots 1, 2 and 4 with planting intervention had H’ diversity index higher than that the of natural regenerated plot – plot 3. In all 3 former plots there were no species with IV% value too high in the dominant order sequence, dominating the growth of other species. In addition, the study showed that under the impact of forest restoration the soil loss amount due to erosion was not high at 1.0 – 3.0 tons\/ha\/year, the surface flow was relatively small at 325 to 800 m3<\/sup>\/ha\/year. These were meaningful assessments contributing to clarifying ecological characteristics, soil, water and forest resilience at the study area.<\/p>\n

Keywords:<\/em><\/strong> Forest rehabilitation, importance value, species biodiversity index, soil erosion, surface runoff<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

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

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 CHUY\u00caN \u0110\u1ec0 2020 \u00a0 1. K\u1ebft qu\u1ea3 b\u01b0\u1edbc \u0111\u1ea7u kh\u1ea3o nghi\u1ec7m gi\u1ed1ng B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala Buch-Ham) \u1edf v\u00f9ng ven bi\u1ec3n B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9, Vi\u1ec7t Nam Initial results on provenance testing of Sonneratia apetala Buch-Ham in Northern and North Central Coastal regions, Vietnam L\u00ea […]<\/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\/2195"}],"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=2195"}],"version-history":[{"count":4,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2195\/revisions"}],"predecessor-version":[{"id":2395,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2195\/revisions\/2395"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}