{"id":2303,"date":"2022-10-31T13:56:13","date_gmt":"2022-10-31T06:56:13","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2303"},"modified":"2023-11-23T12:24:50","modified_gmt":"2023-11-23T05:24:50","slug":"vietnam-journal-of-forest-science-number-3-2022","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2022\/10\/vietnam-journal-of-forest-science-number-3-2022\/","title":{"rendered":"Vietnam Journal of Forest Science Number 3-2022"},"content":{"rendered":"

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

<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 <\/strong>3<\/strong> – <\/strong>20<\/strong>2<\/strong>2<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\n\u0110a d\u1ea1ng h\u1ec7 th\u1ef1c v\u1eadt r\u1eebng t\u1ea1i Khu r\u1eebng \u0111\u1eb7c d\u1ee5ng b\u1ea3o v\u1ec7 c\u1ea3nh quan V\u1ecbnh H\u1ea1 Long, t\u1ec9nh Qu\u1ea3ng Ninh<\/td>\nForest vegetable diverse in the special-use forest protecting the landscape of Ha Long Bay, Quang Ninh province<\/td>\nHo\u00e0ng V\u0103n Th\u1eafng
\nTr\u1ecbnh Ng\u1ecdc Bon
\nCao V\u0103n L\u1ea1ng
\nNguy\u1ec5n V\u0103n Tr\u01b0\u1eddng
\nV\u0169 Duy V\u0103n
\nNguy\u1ec5n V\u0103n Tu\u1ea5n
\nPh\u1ea1m V\u0103n Vi\u1ec7n
\nTr\u1ea7n Xu\u00e2n An<\/em><\/td>\n		5<\/td>\n<\/tr>\n
2.<\/td>\nK\u1ebft qu\u1ea3 di th\u1ef1c S\u00e2m ng\u1ecdc linh \u1edf Vi\u1ec7t Nam<\/td>\nAn assessment of Ngoc linh ginseng introduction to new sites in Vietnam<\/td>\nPh\u1ea1m Duy Long
\nTr\u1ecbnh Minh Qu\u00fd
\n\u0110\u00e0o Ng\u1ecdc Quang
\nL\u00ea V\u0103n B\u00ecnh
\n\u0110\u1eb7ng Nh\u01b0 Qu\u1ef3nh
\nNguy\u1ec5n M\u1ea1nh Tu\u1ea5n
\nNguy\u1ec5n Minh Ch\u00ed<\/em><\/td>\n		16<\/td>\n<\/tr>\n
3.<\/td>\n\u0110a d\u1ea1ng v\u00e0 ph\u00e2n b\u1ed1 h\u1ecd C\u00e0 ph\u00ea (Rubiaceae) \u1edf VQG C\u00f4n \u0110\u1ea3o<\/td>\nDiversity and distribution of Rubiaceae in Con Dao National Park<\/td>\nTr\u1ea7n B\u1ea3o Quy\u00ean
\nNguy\u1ec5n Qu\u1ed1c B\u1ea3o
\nTr\u01b0\u01a1ng B\u00e1 V\u01b0\u01a1ng
\nL\u00ea H\u1ed3ng S\u01a1n
\nNguy\u1ec5n V\u0103n Ng\u00e0
\nTr\u1ea7n \u0110\u00ecnh Hu\u1ec7
\n\u0110\u1eb7ng V\u0103n S\u01a1n<\/em><\/td>\n		24<\/td>\n<\/tr>\n
4.<\/td>\nNghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh c\u00e2y D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p (Amentotaxus argotaenia<\/em> (Hance) Pilg) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom t\u1ea1i t\u1ec9nh S\u01a1n La<\/td>\nResearch on clonal propagation techniques of Amentotaxus argotaenia<\/em> (Hance) Pilg. from cuttings in Son La province<\/td>\nPhan Th\u1ecb Thanh Huy\u1ec1n<\/em><\/td>\n33<\/td>\n<\/tr>\n
5.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a lo\u1ea1i hom, th\u1eddi v\u1ee5 v\u00e0 gi\u00e1 th\u1ec3 gi\u00e2m hom \u0111\u1ebfn kh\u1ea3 n\u0103ng nh\u00e2n gi\u1ed1ng Tr\u00e0 b\u1ea1c (Camellia dormoyana <\/em>(Pierre) Sealy) \u1edf L\u00e2m \u0110\u1ed3ng<\/td>\nEffects of the type of cuttings, season and rooting substrate on vegetative propagation in Camellia dormyana<\/em> in Lam Dong<\/td>\nTr\u1ea7n H\u1ed3ng S\u01a1n
\nL\u01b0\u01a1ng V\u0103n D\u0169ng
\nTr\u1ea7n Th\u1ecb Th\u00fay H\u1eb1ng<\/em><\/td>\n		43<\/td>\n<\/tr>\n
6.<\/td>\nNghi\u00ean c\u1ee9u tuy\u1ec3n ch\u1ecdn c\u00e2y tr\u1ed9i Qu\u1ebf tr\u00e0 my t\u1ea1i t\u1ec9nh Qu\u1ea3ng Nam<\/td>\nResearch on plus tree selection of Cinnamomum cassia<\/em> in Quang Nam province<\/td>\nB\u00f9i ki\u1ec1u H\u01b0ng
\nT\u1ea1 Nh\u1eadt V\u01b0\u01a1ng
\nL\u00ea V\u0103n Quang
\nPhan Th\u1ecb Luy\u1ebfn
\nDi\u1ec7p Xu\u00e2n Tu\u1ea5n
\nPh\u1ea1m \u0110\u00f4n<\/em><\/td>\n		52<\/td>\n<\/tr>\n
7.<\/td>\nNghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd v\u00e0 bi\u1ec7n ph\u00e1p b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng c\u00e2y Hu\u1ef7nh (Tarrietia javanica<\/em> Blume) \u1edf v\u00f9ng B\u1eafc
\nTrung B\u1ed9<\/td>\n		Research on physiological characteristics and seed storage measures of Tarrietia javanica<\/em> Blume in Central North Region<\/td>\nPh\u1ea1m Ti\u1ebfn H\u00f9ng
\nNguy\u1ec5n Th\u1ecb Thanh Nga
\nL\u00ea Xu\u00e2n To\u00e0n
\nHo\u00e0ng V\u0103n Tu\u1ea5n<\/em><\/td>\n		64<\/td>\n<\/tr>\n
8.<\/td>\nSinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c d\u00f2ng v\u00f4 t\u00ednh Keo l\u00e1 tr\u00e0m (Acacia auriculiformis<\/em>) \u1edf Qu\u1ea3ng Ninh<\/td>\nGrowth of Acacia auriculiformis<\/em> clonal varieties in Quang Ninh<\/td>\nPh\u1ea1m \u0110\u00ecnh S\u00e2m
\nHo\u00e0ng Th\u1ecb Nhung
\nH\u1ed3 Trung L\u01b0\u01a1ng
\nNguy\u1ec5n Thanh S\u01a1n
\nNguy\u1ec5n H\u1eefu Th\u1ecbnh
\nNguy\u1ec5n Huy S\u01a1n<\/em><\/td>\n		74<\/td>\n<\/tr>\n
9.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a
\nKeo l\u00e1 tr\u00e0m (Acacia auriculiformis<\/em>)
\n\u1edf Qu\u1ea3ng Ninh<\/td>\n		Effects of density on the growth of Acacia auriculiformis<\/em> in Quang Ninh<\/td>\nPh\u1ea1m \u0110\u00ecnh S\u00e2m
\nH\u1ed3 Trung L\u01b0\u01a1ng
\nHo\u00e0ng V\u0103n Th\u00e0nh
\nTr\u1ea7n Th\u1ecb H\u1ed3ng V\u00e2n
\nH\u00e0 Th\u1ecb Mai
\nNguy\u1ec5n Huy S\u01a1n<\/em><\/td>\n		85<\/td>\n<\/tr>\n
10.<\/td>\nTh\u1ef1c tr\u1ea1ng v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba g\u00e2y tr\u1ed3ng B\u1ea7n chua (Sonneratia caseolaris<\/em> (L.) Engler) v\u00e0 Trang (Kandelia obovata<\/em> Sheue, Liu & Yong) \u1edf v\u00f9ng ven bi\u1ec3n B\u1eafc B\u1ed9<\/td>\nActual state and site condition for planting Sonneratia caseolaris<\/em> (L.) Engler and Kandelia obovata<\/em> Sheue, Liu & Yong at the Northern Coastal Areas<\/td>\nL\u00ea V\u0103n Th\u00e0nh
\nH\u00e0 \u0110\u00ecnh Long
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh
\n\u0110\u1ed7 Th\u1ecb Kim Nhung
\nT\u1ea1 V\u0103n H\u00e2n
\n\u0110o\u00e0n Thanh T\u00f9ng
\nTr\u01b0\u01a1ng Quang Tr\u00ed
\nNguy\u1ec5n Xu\u00e2n \u0110\u00e0i
\nH\u00e0 V\u0103n N\u0103m<\/em><\/td>\n		94<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n
11.<\/td>\nNghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a Tr\u00f4m (Sterculia foetida<\/em> L.) ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean t\u1ea1i v\u00f9ng Nam Trung B\u1ed9<\/td>\nResearch on some silvicultural characteristics of Sterculia foetida<\/em> L. natural distributions in the South Central of Vietnam<\/td>\nPh\u00f9ng V\u0103n Khen
\nPh\u00f9ng V\u0103n Khang
\nNguy\u1ec5n Tr\u1ecdng Nam
\nNguy\u1ec5n Qu\u1ed1c \u0110\u1ea1t
\nL\u00ea Tri\u1ec7u Duy
\nTr\u1ea7n V\u0103n Nho
\nH\u1ed3 S\u1ef9 Trung<\/em><\/td>\n		105<\/td>\n<\/tr>\n
12.<\/td>\nSinh kh\u1ed1i v\u00e0 c\u1ea5u tr\u00fac r\u1eebng t\u1ef1 nhi\u00ean t\u1ea1i Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean \u0110\u1ed3ng S\u01a1n – K\u1ef3 Th\u01b0\u1ee3ng, Qu\u1ea3ng Ninh<\/td>\nBiomass and structure of Natural Forest in Dong Son – Ky Thuong Natural Reserve Area, Quang Ninh<\/td>\nTr\u1ea7n V\u0103n \u0110\u00f4
\nNguy\u1ec5n To\u00e0n Th\u1eafng
\nV\u0169 Ti\u1ebfn L\u00e2m
\nHo\u00e0ng Thanh S\u01a1n
\nHo\u00e0ng V\u0103n Th\u00e0nh
\nD\u01b0\u01a1ng Quang Trung
\n\u0110\u00e0o Trung \u0110\u1ee9c
\nTr\u1ecbnh Ng\u1ecdc Bon
\nTr\u1ea7n Cao Nguy\u00ean
\nTr\u01b0\u01a1ng Tr\u1ecdng Kh\u00f4i
\nTr\u1ea7n H\u1ea3i Long<\/em><\/td>\n		114<\/td>\n<\/tr>\n
13.<\/td>\nTh\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u h\u1ea1i c\u00e2y S\u01a1n tra (Docynia indica<\/em> Wallich) t\u1ea1i v\u00f9ng T\u00e2y B\u1eafc<\/td>\nInsect pest species composition associated with Docynia indica<\/em> (Wallich) in the Northwest of Vietnam<\/td>\nPh\u1ea1m Quang Thu
\nL\u00ea V\u0103n B\u00ecnh
\nTr\u1ea7n Vi\u1ebft Th\u1eafng
\nTrang A T\u1ed5ng
\nB\u00f9i Quang Ti\u1ebfp<\/em><\/td>\n		121<\/td>\n<\/tr>\n
14.<\/td>\nB\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a gi\u1ea3i ph\u00e1p c\u00f4ng ngh\u1ec7 sinh h\u1ecdc m\u00f4i tr\u01b0\u1eddng tr\u00ean \u0111\u1ea5t b\u00e3i th\u1ea3i khai th\u00e1c than \u0110\u00f4ng Cao S\u01a1n \u1edf Qu\u1ea3ng Ninh<\/td>\nPreliminary assessment of impacts bioremediation solutions at Dong Cao S\u01a1n coal mining waste land in Quang Ninh province<\/td>\nV\u0169 Qu\u00fd \u0110\u00f4ng
\nL\u00ea V\u0103n Th\u00e0nh
\n\u0110o\u00e0n Th\u1ecb Th\u1ea3o
\nL\u00ea Th\u1ecb Thu H\u1eb1ng
\nH\u00e0 Th\u1ecb Thanh Mai
\n\u0110\u1ed7 M\u1ea1nh D\u0169ng
\nNguy\u1ec5n Ho\u00e0ng Hu\u00e2n
\nPh\u1ea1m Tu\u1ea5n Anh
\nGi\u00e1p V\u0103n Ki\u00ean<\/em><\/td>\n		133<\/td>\n<\/tr>\n
15.<\/td>\nL\u01b0\u1ee3ng gi\u00e1 kinh t\u1ebf h\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd<\/td>\nEconomic valuation of Can Gio mangrove ecosystem services<\/td>\nTr\u1ea7n Th\u1ecb Thu H\u00e0
\nNguy\u1ec5n Thu\u1ef3 M\u1ef9 Linh
\nPh\u1ea1m Ng\u1ecdc Th\u00e0nh
\n\u0110o\u00e0n Thanh T\u00f9ng
\nNguy\u1ec5n Ho\u00e0ng Nam<\/em><\/td>\n		142<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/a>\u0110A D\u1ea0NG H\u1ec6 TH\u1ef0C V\u1eacT R\u1eeaNG\u00a0T\u1ea0I KHU R\u1eeaNG \u0110\u1eb6C D\u1ee4NG B\u1ea2O V\u1ec6 C\u1ea2NH QUAN V\u1ecaNH H\u1ea0 LONG,\u00a0T\u1ec8NH QU\u1ea2NG NINH<\/strong><\/p>\n

<\/a>Ho\u00e0ng V\u0103n Th\u1eafng1<\/sup>, Tr\u1ecbnh Ng\u1ecdc Bon2<\/sup>, Cao V\u0103n L\u1ea1ng1<\/sup>, Nguy\u1ec5n V\u0103n Tr\u01b0\u1eddng1<\/sup>,
\nV\u0169 Duy V\u0103n3<\/sup>, Nguy\u1ec5n V\u0103n Tu\u1ea5n2<\/sup>, Ph\u1ea1m V\u0103n Vi\u1ec7n1<\/sup>, Tr\u1ea7n Xu\u00e2n An1<\/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 L\u00e2m sinh
\n3<\/sup> S\u1edf N\u00f4ng nghi\u1ec7p v\u00e0 Ph\u00e1t tri\u1ec3n n\u00f4ng th\u00f4n Qu\u1ea3ng Ninh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra \u0111a d\u1ea1ng th\u1ef1c v\u1eadt khu r\u1eebng \u0111\u1eb7c d\u1ee5ng b\u1ea3o v\u1ec7 c\u1ea3nh quan V\u1ecbnh H\u1ea1 Long, t\u1ec9nh Qu\u1ea3ng Ninh \u0111\u1ebfn nay \u0111\u00e3 ph\u00e1t hi\u1ec7n c\u00f3 t\u1ed5ng s\u1ed1 830 lo\u00e0i th\u1ef1c v\u1eadt, thu\u1ed9c 4 ng\u00e0nh th\u1ef1c v\u1eadt (ng\u00e0nh Th\u00f4ng \u0111\u1ea5t, ng\u00e0nh D\u01b0\u01a1ng x\u1ec9, ng\u00e0nh Th\u00f4ng v\u00e0 ng\u00e0nh Ng\u1ecdc lan), thu\u1ed9c 14 nh\u00f3m d\u1ea1ng s\u1ed1ng kh\u00e1c nhau, trong \u0111\u00f3 d\u1ea1ng s\u1ed1ng C\u1ecf nh\u1ecf c\u00f3 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i l\u1edbn nh\u1ea5t l\u00e0 157 lo\u00e0i. Trong 830 lo\u00e0i \u0111\u00e3 \u0111i\u1ec1u tra \u0111\u01b0\u1ee3c th\u00ec c\u00f3 299 lo\u00e0i l\u00e0 ph\u00e1t hi\u1ec7n m\u1edbi so v\u1edbi danh m\u1ee5c lo\u00e0i tr\u01b0\u1edbc \u0111\u00e2y do Ban qu\u1ea3n l\u00fd V\u1ecbnh H\u1ea1 Long \u0111ang qu\u1ea3n l\u00fd. H\u1ec7 th\u1ef1c v\u1eadt t\u1ea1i khu r\u1eebng \u0111\u1eb7c d\u1ee5ng b\u1ea3o v\u1ec7 c\u1ea3nh quan V\u1ecbnh H\u1ea1 Long thu\u1ed9c 12 nh\u00f3m c\u00f4ng d\u1ee5ng kh\u00e1c nhau, trong \u0111\u00f3 nh\u00f3m c\u00e2y l\u00e0m thu\u1ed1c c\u00f3 s\u1ed1 lo\u00e0i cao nh\u1ea5t l\u00e0 370 lo\u00e0i. Trong s\u1ed1 830 lo\u00e0i th\u1ef1c v\u1eadt xu\u1ea5t hi\u1ec7n \u1edf khu r\u1eebng \u0111\u1eb7c d\u1ee5ng V\u1ecbnh H\u1ea1 Long th\u00ec c\u00f3 t\u1edbi 260 lo\u00e0i \u0111\u1eb7c h\u1eefu v\u00e0 qu\u00fd, hi\u1ebfm, chi\u1ebfm 31,36% t\u1ed5ng s\u1ed1 lo\u00e0i trong khu v\u1ef1c nghi\u00ean c\u1ee9u, trong \u0111\u00f3 c\u00f3 3 lo\u00e0i thu\u1ed9c ng\u00e0nh D\u01b0\u01a1ng x\u1ec9, 7 lo\u00e0i thu\u1ed9c ng\u00e0nh Th\u00f4ng v\u00e0 250 lo\u00e0i thu\u1ed9c ng\u00e0nh Ng\u1ecdc lan.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110a d\u1ea1ng, th\u1ef1c v\u1eadt, r\u1eebng \u0111\u1eb7c d\u1ee5ng, V\u1ecbnh H\u1ea1 Long<\/td>\n<\/tr>\n

\n

<\/a>Forest vegetable diverse in the special-use forest protecting the landscape of Ha Long Bay, Quang Ninh province<\/strong><\/p>\n

The results of the investigation of plant diversity in the special-use forest that protects the landscape of Ha Long Bay, Quang Ninh province so far have discovered a total of 830 species of plants, belonging to 4 plant branches (Lycopodiophyta, Polypodiophyta, Pinophyta, and Magnoliophyta), belongs to 14 different lifeform groups, in which the small grass life form has the largest number of species with 157 species. Of the 830 species that have been investigated, 299 are new discoveries compared to the previous list of species managed by the Ha Long Bay Management Board. The flora in the special-use forest to protect the landscape of Vinh Ha Long belongs to 12 groups of different uses, in which the group of medicinal plants has the highest number of species with 370 species. Among 830 plant species appearing in Ha Long Bay’s special-use forest, there are 260 endemic, precious and rare species, accounting for 31.36% of the total species in the study area, of which 3 species belong to the Polypodiophyta, 7 species of the Pinophyta and 250 species of Magnoliophyta branch.<\/p>\n

Keywords:<\/em><\/strong> Diversity, flora, special-used forest, Ha Long Bay<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a><\/a>K\u1ebeT QU\u1ea2 DI TH\u1ef0C S\u00c2M NG\u1eccC LINH \u1ede VI\u1ec6T NAM<\/p>\n

<\/a>Ph\u1ea1m Duy Long1<\/sup>, Tr\u1ecbnh Minh Qu\u00fd2<\/sup>, \u0110\u00e0o Ng\u1ecdc Quang1<\/sup>, L\u00ea V\u0103n B\u00ecnh1<\/sup>,
\n\u0110\u1eb7ng Nh\u01b0 Qu\u1ef3nh1<\/sup>, Nguy\u1ec5n M\u1ea1nh Tu\u1ea5n2<\/sup>, Nguy\u1ec5n Minh Ch\u00ed1<\/sup><\/p>\n

1<\/sup> Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng
\n2<\/sup> Trung t\u00e2m K\u1ef9 thu\u1eadt N\u00f4ng nghi\u1ec7p huy\u1ec7n Nam Tr\u00e0 My<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

S\u00e2m ng\u1ecdc linh ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean t\u1ea1i v\u00f9ng n\u00fai Ng\u1ecdc Linh, t\u1eadp trung \u1edf \u0111\u1ed9 cao t\u1eeb 1.700 – 2.200 m. \u0110\u00e2y l\u00e0 m\u1ed9t trong 5 lo\u1ea1i nh\u00e2n s\u00e2m c\u00f3 gi\u00e1 tr\u1ecb nh\u1ea5t th\u1ebf gi\u1edbi v\u00e0 \u0111ang r\u1ea5t \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng tr\u00ean th\u1ecb tr\u01b0\u1eddng d\u01b0\u1ee3c li\u1ec7u. \u0110\u1ec3 m\u1edf r\u1ed9ng v\u00f9ng tr\u1ed3ng, ho\u1ea1t \u0111\u1ed9ng di th\u1ef1c c\u00e2y S\u00e2m ng\u1ecdc linh \u0111\u00e3 \u0111\u01b0\u1ee3c tri\u1ec3n khai \u1edf nhi\u1ec1u n\u01a1i v\u00e0 c\u00f3 nh\u1eefng k\u1ebft qu\u1ea3 kh\u1ea3 quan. S\u00e2m ng\u1ecdc linh \u0111\u00e3 \u0111\u01b0\u1ee3c di th\u1ef1c th\u00e0nh c\u00f4ng \u1edf \u0111\u1ed9 cao 1.500 – 1.700 m thu\u1ed9c v\u00f9ng n\u00fai Ng\u1ecdc Linh. \u0110\u00e3 di th\u1ef1c th\u00e0nh c\u00f4ng ra ngo\u00e0i v\u00f9ng n\u00fai Ng\u1ecdc Linh, trong \u0111\u00f3 c\u00e2y tr\u1ed3ng t\u1ea1i huy\u1ec7n Kon Plong, t\u1ec9nh Kon Tum sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n t\u1ed1t, kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7 g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi n\u01a1i ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean. B\u01b0\u1edbc \u0111\u1ea7u di th\u1ef1c th\u00e0nh c\u00f4ng t\u1ea1i huy\u1ec7n L\u1ea1c D\u01b0\u01a1ng – t\u1ec9nh L\u00e2m \u0110\u1ed3ng, huy\u1ec7n Tam \u0110\u1ea3o – t\u1ec9nh V\u0129nh Ph\u00fac, th\u1ecb x\u00e3 Sa Pa – t\u1ec9nh L\u00e0o Cai, huy\u1ec7n An L\u00e3o – t\u1ec9nh B\u00ecnh \u0110\u1ecbnh, huy\u1ec7n H\u01b0\u1edbng H\u00f3a – t\u1ec9nh Qu\u1ea3ng Tr\u1ecb v\u00e0 huy\u1ec7n Kh\u00e1nh V\u0129nh – t\u1ec9nh Kh\u00e1nh H\u00f2a. \u0110\u1eb7c bi\u1ec7t, c\u00e2y S\u00e2m ng\u1ecdc linh sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n r\u1ea5t t\u1ed1t \u1edf L\u1ea1c D\u01b0\u01a1ng, L\u00e2m \u0110\u1ed3ng v\u00e0 Tam \u0110\u1ea3o, V\u0129nh Ph\u00fac. Vi\u1ec7c di th\u1ef1c S\u00e2m ng\u1ecdc linh ra ngo\u00e0i n\u01a1i ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean c\u00f3 th\u1ec3 th\u00e0nh c\u00f4ng nh\u01b0ng c\u1ea7n ho\u00e0n thi\u1ec7n k\u1ef9 thu\u1eadt tr\u1ed3ng ph\u00f9 h\u1ee3p cho t\u1eebng \u0111\u1ecba \u0111i\u1ec3m di th\u1ef1c c\u1ee5 th\u1ec3.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Di th\u1ef1c, nh\u00e2n gi\u1ed1ng, g\u00e2y tr\u1ed3ng, Panax vietnamensis,<\/em> S\u00e2m ng\u1ecdc linh<\/td>\n<\/tr>\n

\n

<\/a>An assessment of Ngoc Linh ginseng introduction to new sites in Vietnam<\/strong><\/p>\n

Ngoc Linh ginseng is a medicinal herb indigenous to the Ngoc Linh Mountain in the Quang Nam and Kon Tum provinces, where it grows primarily at 1,700 – 2,200 m above sea level. It is one of the five most important species in the genus Panax<\/em>, and it is highly valued in the herbal health care market. To facilitate the expansion of ginseng cultivation, Ngoc Linh ginseng has been experimentally introduced to different sites to test its suitability. The sites included Quang Nam, Kon Tum, Lac Duong – Lam Dong, Tam Dao – Vinh Phuc, Sa Pa – Lao Cai, An Lao – Binh Dinh, Huong Hoa – Quang Tri and Khanh Vinh – Khanh Hoa. It was found that it could be grown at lower altitudes (1,500 – 1,700 m) both within the Ngoc Linh mountain and in other locations outside its original distribution. In the Kon Plong district of Kon Tum province, the ginseng grew well, attaining a root weight almost equivalent to that achieved in its original habitat. Growth and development were also good at Lac Duong, Lam Dong and Tam Dao, Vinh Phuc. In conclusion, it has been shown to be possible to introduce Ngoc Linh ginseng to different sites in Vietnam but for a successful outcome, it is necessary to develop suitable techniques for each specific planting site.<\/p>\n

Keywords:<\/em><\/strong> Introduction, breeding, cultivation, Panax vietnamensis,<\/em>
\nNgoc Linh ginseng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110A D\u1ea0NG V\u00c0 PH\u00c2N B\u1ed0 H\u1ecc C\u00c0 PH\u00ca (Rubiaceae)\u00a0\u1ede V\u01af\u1edcN QU\u1ed0C GIA C\u00d4N \u0110\u1ea2O<\/p>\n

<\/a>Tr\u1ea7n B\u1ea3o Quy\u00ean1<\/sup>, Nguy\u1ec5n Qu\u1ed1c B\u1ea3o2,4<\/sup>, Tr\u01b0\u01a1ng B\u00e1 V\u01b0\u01a1ng2<\/sup>,4<\/sup>, L\u00ea H\u1ed3ng S\u01a1n3<\/sup>,
\nNguy\u1ec5n V\u0103n Ng\u00e03<\/sup>, Tr\u1ea7n \u0110\u00ecnh Hu\u1ec73<\/sup>, \u0110\u1eb7ng V\u0103n S\u01a1n2,4*<\/sup><\/p>\n

Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc S\u01b0 ph\u1ea1m TP. H\u1ed3 Ch\u00ed Minh
\n2<\/sup>Vi\u1ec7n Sinh h\u1ecdc nhi\u1ec7t \u0111\u1edbi, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam
\n3<\/sup>VQG C\u00f4n \u0110\u1ea3o, t\u1ec9nh B\u00e0 R\u1ecba – V\u0169ng T\u00e0u
\n4<\/sup>H\u1ecdc Vi\u1ec7n Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

T\u1eeb k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch m\u1eabu ti\u00eau b\u1ea3n thu \u0111\u01b0\u1ee3c t\u1eeb n\u0103m 2021 – 2022, k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111a d\u1ea1ng v\u00e0 ph\u00e2n b\u1ed1 h\u1ecd C\u00e0 ph\u00ea (Rubiaceae) \u1edf VQG C\u00f4n \u0110\u1ea3o \u0111\u00e3 x\u00e1c \u0111\u1ecbnh 73 lo\u00e0i thu\u1ed9c 33 chi. Trong \u0111\u00f3, c\u00f3 6 lo\u00e0i b\u1ed5 sung cho h\u1ecd C\u00e0 ph\u00ea v\u00e0 h\u1ec7 th\u1ef1c v\u1eadt C\u00f4n \u0110\u1ea3o, bao g\u1ed3m: Chim tr\u00edch (Benkara depauperata<\/em>), G\u0103ng bi\u00ean h\u00f2a (Benkara hoaensis<\/em>), G\u0103ng (Benkara scandens<\/em>), L\u1ea5u b\u00f2 (Psychotria serpens<\/em>), X\u00fa h\u01b0\u01a1ng lam (Lasianthus hirsutus<\/em>) v\u00e0 An \u0111i\u1ec1n lan (Oldenlandia diffusa)<\/em>. V\u1ec1 gi\u00e1 tr\u1ecb t\u00e0i nguy\u00ean, k\u1ebft qu\u1ea3 \u0111\u00e3 ghi nh\u1eadn \u0111\u01b0\u1ee3c h\u1ecd C\u00e0 ph\u00ea c\u00f3 4 lo\u00e0i cho g\u1ed7, 30 lo\u00e0i c\u00f3 gi\u00e1 tr\u1ecb l\u00e0m thu\u1ed1c, v\u00e0 2 lo\u00e0i l\u00e0 Chim ch\u00edch (Benkara depauperata<\/em>) v\u00e0 X\u01b0\u01a1ng c\u00e1 (Psydrax dicoccos<\/em>) c\u00f3 gi\u00e1 tr\u1ecb b\u1ea3o t\u1ed3n theo S\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam (2007). D\u1ea1ng s\u1ed1ng c\u1ee7a c\u00e1c lo\u00e0i thu\u1ed9c h\u1ecd C\u00e0 ph\u00ea (Rubiaceae) \u0111\u01b0\u1ee3c chia th\u00e0nh 5 nh\u00f3m ch\u00ednh, g\u1ed3m: c\u00e2y ch\u1ed3i tr\u00ean nh\u1ecf (Mi) v\u1edbi 46 lo\u00e0i; c\u00e2y ch\u1ed3i tr\u00ean v\u1eeba (Me) v\u1edbi 10 lo\u00e0i; c\u00e2y th\u00e2n th\u1ea3o (Hp) v\u1edbi 10 lo\u00e0i, d\u00e2y leo (Lp) v\u00e0 c\u00e2y ch\u1ed3i tr\u00ean to (Mg) v\u1edbi l\u1ea7n l\u01b0\u1ee3t l\u00e0 4 v\u00e0 3 lo\u00e0i. C\u00e1c lo\u00e0i thu\u1ed9c h\u1ecd C\u00e0 ph\u00ea ph\u00e2n b\u1ed1 r\u1ed9ng trong t\u1ef1 nhi\u00ean, tr\u1ea3i d\u00e0i \u1edf c\u00e1c \u0111\u1ed9 cao t\u1eeb 2 – 577 m so v\u1edbi m\u1eb7t n\u01b0\u1edbc bi\u1ec3n trong c\u00e1c ki\u1ec3u sinh c\u1ea3nh r\u1eebng kh\u00e1c nhau, trong \u0111\u00f3, ki\u1ec3u r\u1eebng tr\u00ean v\u00f9ng n\u00fai th\u1ea5p c\u00f3 nhi\u1ec1u lo\u00e0i nh\u1ea5t (52 lo\u00e0i) v\u00e0 \u00edt nh\u1ea5t l\u00e0 ki\u1ec3u r\u1eebng ng\u1eadp m\u1eb7n (1 lo\u00e0i).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110a d\u1ea1ng h\u1ecd C\u00e0 ph\u00ea (Rubiaceae), C\u00f4n \u0110\u1ea3o, ph\u00e2n b\u1ed1, th\u1ef1c v\u1eadt<\/td>\n<\/tr>\n

\n

<\/a>Diversity and distribution of rubiaceae in Con Dao National Park<\/strong><\/p>\n

Based on the specimens from 2021 – 2022, a study on the diversity and distribution of Rubiaceae in Con Dao National Park in Ba Ria – Vung Tau province was defined and identified 73 species and 33 genera. Among them, 6 species have been added to Con Dao National Park, including Benkara depauperata<\/em>, Benkara hoaensis<\/em>, Benkara scandens<\/em>, Psychotria serpens<\/em>, Lasianthus hirsutus <\/em>and Oldenlandia diffusa<\/em>. For plant resources, 5 species were used for wood; 22 species were used for medicinal herbs; and 2 species Benkara depauperata<\/em> and Psydrax dicoccos<\/em> were listed for conversation in Vietnam Red Data Book, Park II, Plants (2007). The life forms of Rubiaceae were divided into five groups, such as microphanerophytes with 46 species, mesophanerophytes with 10 species, herbaces phanerophytes with 10 species, lianophanerophytes with 4 species and magaphanerophytes with 3 species. All species of Rubiaceae are widely distributed from 2 m to 577 m altitude in various habitats, and it is most abundant in lowland forest (52 species) and least in mangrove forest (1 species).<\/p>\n

Keywords:<\/em><\/strong>Diversity of Rubiaceae, Con Dao, distribution, plant<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U KH\u1ea2 N\u0102NG NH\u00c2N GI\u1ed0NG V\u00d4 T\u00cdNH\u00a0C\u00c2Y D\u1eba T\u00d9NG S\u1eccC TR\u1eaeNG H\u1eb8P (Amentotaxus argotaenia<\/em> (Hance) Pilg) B\u1eb0NG PH\u01af\u01a0NG PH\u00c1P GI\u00c2M HOM T\u1ea0I T\u1ec8NH S\u01a0N LA<\/p>\n

<\/a>Phan Th\u1ecb Thanh Huy\u1ec1n<\/p>\n

Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc T\u00e2y B\u1eafc<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o gi\u1edbi thi\u1ec7u k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh c\u00e2y D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p (Amentotaxus argotaenia <\/em>(Hance) Pilg.<\/em>) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom. \u1ede c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m n\u1ed3ng \u0111\u1ed9 v\u00e0 lo\u1ea1i thu\u1ed1c th\u00ec s\u1eed d\u1ee5ng lo\u1ea1i thu\u1ed1c IBA n\u1ed3ng \u0111\u1ed9 1% cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t. Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a m\u00f9a v\u1ee5 v\u00e0 lo\u1ea1i thu\u1ed1c: K\u1ebft qu\u1ea3 cho th\u1ea5y hom gi\u00e2m v\u00e0o m\u00f9a Thu v\u00e0 s\u1eed d\u1ee5ng thu\u1ed1c IBA 1% cho t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 t\u1ef7 l\u1ec7 ra r\u1ec5 l\u00e0 cao nh\u1ea5t \u0111\u1ea1t 64,44%. Gi\u00e1 th\u1ec3 gi\u00e2m hom c\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1ed1t nh\u1ea5t \u0111\u1ebfn t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1ec5 c\u1ee7a hom gi\u00e2m c\u00e2y D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p l\u00e0 c\u00f4ng th\u1ee9c gi\u00e1 th\u1ec3 70% \u0111\u1ea5t + 20% ph\u00e2n h\u1eefu c\u01a1 + 10% \u0111\u1ea5t d\u01b0\u1edbi t\u00e1n r\u1eebng c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 68,89%.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u1ebb t\u00f9ng s\u1ecdc tr\u1eafng h\u1eb9p, gi\u00e2m hom, thu\u1ed1c k\u00edch th\u00edch ra r\u1ec5<\/td>\n<\/tr>\n

\n

<\/a>Research on clonal propagation techniques of Amentotaxus argotaenia<\/em> (Hance) Pilg. from cuttings in Son La province<\/strong><\/p>\n

This paper presents the results of the study on clonal propagation of the narrow white-striped conifer (Amentotaxus argotaenia<\/em> (Hance) Pilg.) by cuttings. Research results show that: In the experimental formulas of concentrations and drugs, the 1% IBA drug gives the most dominant results. Study on the effect of season and type of drug: The results showed that cuttings in autumn and using IBA1% had the highest survival rate and rooting rate at 64.44%. The cutting medium that had the best effect on the rooting rate and root quality of the narrow white striped conifer cuttings was the formula of 70% soil + 20% organic fertilizer + 10% soil under the forest canopy with high density rooting rate 68.89%.<\/p>\n

Keywords:<\/em><\/strong> Amentotaxus argotaenia<\/em> (Hance) Pilg., cuttings, rooting stimulant<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A LO\u1ea0I HOM, TH\u1edcI V\u1ee4 V\u00c0 GI\u00c1 TH\u1ec2 GI\u00c2M HOM \u0110\u1ebeN KH\u1ea2 N\u0102NG NH\u00c2N GI\u1ed0NG TR\u00c0 B\u1ea0C (Camellia dormoyana <\/em>(Pierre) Sealy) \u1ede L\u00c2M \u0110\u1ed2NG<\/p>\n

<\/a>Tr\u1ea7n H\u1ed3ng S\u01a1n1<\/sup>, L\u01b0\u01a1ng V\u0103n D\u0169ng2<\/sup>, Tr\u1ea7n Th\u1ecb Th\u00fay H\u1eb1ng1<\/sup><\/p>\n

1<\/sup> Trung t\u00e2m L\u00e2m nghi\u1ec7p Nhi\u1ec7t \u0111\u1edbi
\n2<\/sup> Trung t\u00e2m Nghi\u00ean c\u1ee9u \u1ee8ng d\u1ee5ng Ph\u00e1t tri\u1ec3n T\u00e0i nguy\u00ean Th\u1ef1c v\u1eadt<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Tr\u00e0 b\u1ea1c (Camellia dormoyana<\/em>) l\u00e0 lo\u1ea1i d\u01b0\u1ee3c li\u1ec7u qu\u00fd ch\u1ee9a nhi\u1ec1u h\u1ee3p ch\u1ea5t c\u00f3 ho\u1ea1t t\u00ednh d\u01b0\u1ee3c l\u00fd c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng vi\u00eam, ph\u00f2ng v\u00e0 \u0111i\u1ec1u tr\u1ecb ung th\u01b0 c\u0169ng nh\u01b0 ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi. M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 nh\u1eb1m ho\u00e0n thi\u1ec7n k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng hom lo\u00e0i c\u00e2y n\u00e0y \u0111\u1ec3 cung c\u1ea5p nh\u1eefng c\u00e2y gi\u1ed1ng c\u00f3 ngu\u1ed3n g\u1ed1c xu\u1ea5t x\u1ee9 r\u00f5 r\u00e0ng, ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t, \u0111\u1ed3ng \u0111\u1ec1u v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn. Nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng c\u00e2y Tr\u00e0 b\u1ea1c 5 tu\u1ed5i t\u1ea1i v\u01b0\u1eddn s\u01b0u t\u1eadp gi\u1ed1ng huy\u1ec7n \u0110\u1ea1 Huoai, b\u1ed1 tr\u00ed th\u00ed nghi\u1ec7m t\u1ea1i v\u01b0\u1eddn \u01b0\u01a1m Th\u00e0nh ph\u1ed1 \u0110\u1ea1t L\u1ea1t, t\u1ec9nh L\u00e2m \u0110\u1ed3ng. K\u1ebft qu\u1ea3 cho th\u1ea5y, s\u1eed d\u1ee5ng lo\u1ea1i hom ti\u1ebfp gi\u00e1p v\u1edbi hom ng\u1ecdn, th\u1eddi v\u1ee5 gi\u00e2m hom v\u00e0o \u0111\u1ea7u m\u00f9a kh\u00f4 v\u00e0 gi\u00e1 th\u1ec3 gi\u00e2m hom l\u00e0 c\u00e1t s\u00f4ng \u0111\u1ed1i v\u1edbi lo\u00e0i Tr\u00e0 b\u1ea1c cho t\u1ef7 l\u1ec7 hom s\u1ed1ng, hom ra m\u00f4 s\u1eb9o, hom ra ch\u1ed3i v\u00e0 s\u1ed1 r\u1ec5 v\u1edbi chi\u1ec1u d\u00e0i r\u1ec5 b\u00ecnh qu\u00e2n cao nh\u1ea5t v\u00e0 c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c c\u00f2n l\u1ea1i. Hom ti\u1ebfp gi\u00e1p v\u1edbi hom ng\u1ecdn cho t\u1ef7 l\u1ec7 hom s\u1ed1ng \u0111\u1ea1t 76,7%, t\u1ef7 l\u1ec7 hom ra ch\u1ed3i (63,3%), trung b\u00ecnh c\u00f3 2,18 r\u1ec5\/hom, v\u1edbi chi\u1ec1u d\u00e0i r\u1ec5 4,22 cm. Th\u1eddi v\u1ee5 gi\u00e2m hom v\u00e0o \u0111\u1ea7u m\u00f9a kh\u00f4 cho s\u1ed1 r\u1ec5 v\u00e0 chi\u1ec1u d\u00e0i r\u1ec5 b\u00ecnh qu\u00e2n cao nh\u1ea5t, \u0111\u1ea1t 1,91 r\u1ec5\/hom v\u1edbi chi\u1ec1u d\u00e0i 3,26 cm. Gi\u00e1 th\u1ec3 gi\u00e2m hom l\u00e0 c\u00e1t s\u00f4ng cho k\u1ebft qu\u1ea3 cao nh\u1ea5t, t\u1ef7 l\u1ec7 hom s\u1ed1ng \u0111\u1ea1t tr\u00ean 73%, hom ra ch\u1ed3i \u0111\u1ea1t tr\u00ean 66%, s\u1ed1 r\u1ec5 \u0111\u1ea1t 2,15 r\u1ec5 v\u1edbi chi\u1ec1u d\u00e0i 3,10 cm.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Tr\u00e0 b\u1ea1c, lo\u1ea1i hom, th\u1eddi v\u1ee5 gi\u00e2m hom, gi\u00e1 th\u1ec3 gi\u00e2m hom<\/td>\n<\/tr>\n

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<\/a>Effects of the type of cuttings, season and rooting substrate on vegetative propagation in Camellia dorm<\/em>o<\/em>ya<\/em>c<\/em>na<\/em> in Lam Dong<\/strong><\/p>\n

Yellow Camellias is a priceless medicinal herb with a wealth of pharmacologically potent chemicals that can treat and prevent cancer as well as promote human health and combat inflammation. The goal of cutting-based seedling propagation is to produce seedlings with a clear origin, good quality, uniformity, and high production potential. The experiment used several cutting types, cutting seasons, and cutting media with 300ppm IBA growth regulator. According to the results, the ratio of cuttings that were alive, cuttings that developed calluses, cuttings that produced buds, and the number of roots with the average root length were the highest and statistically significant when compared to the other formulas when using semi-hardwood cuttings, cuttings taken at the start of the dry season, and cuttings taken from river sand for the Camellia dormoyana<\/em> species. The survival rate for semi-hardwood cuttings was 76.7 percent, for cuttings and shoots it was 63.3 percent, with an average of 2.18 roots per cut and a length of 4.22 cm. Cuttings made at the start of the dry season produced the most roots overall, averaging 1.91 roots per cut and a length of 3.26 cm. River sand cuttings yielded the best outcomes, with a cutting survival rate of over 73 percent, a cutting shoot production rate of over 66 percent, and a cutting root count of 2.15 roots with a 3.10 cm length.<\/p>\n

Keywords:<\/em><\/strong> Camellia flava, Camellia dormoyana<\/em>, type of cuttings, cutting season, rooting substrate<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U TUY\u1ec2N CH\u1eccN C\u00c2Y TR\u1ed8I QU\u1ebe TR\u00c0 MY T\u1ea0I T\u1ec8NH QU\u1ea2NG NAM<\/p>\n

<\/a>B\u00f9i Ki\u1ec1u H\u01b0ng, T\u1ea1 Nh\u1eadt V\u01b0\u01a1ng, L\u00ea V\u0103n Quang, Phan Th\u1ecb Luy\u1ebfn,
\nDi\u1ec7p Xu\u00e2n Tu\u1ea5n, Ph\u1ea1m \u0110\u00f4n<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u v\u00e0 Chuy\u1ec3n giao k\u1ef9 thu\u1eadt L\u00e2m sinh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Qu\u1ebf tr\u00e0 my l\u00e0 c\u00e2y \u0111\u1eb7c s\u1ea3n, d\u01b0\u1ee3c li\u1ec7u qu\u00fd n\u1ed5i ti\u1ebfng c\u1ee7a t\u1ec9nh Qu\u1ea3ng Nam v\u00e0 c\u1ee7a Vi\u1ec7t Nam. C\u00e2y \u0111\u01b0\u1ee3c tr\u1ed3ng t\u1eadp trung ch\u1ee7 y\u1ebfu t\u1ea1i 4 huy\u1ec7n B\u1eafc Tr\u00e0 My, Nam Tr\u00e0 My, Ph\u01b0\u1edbc S\u01a1n v\u00e0 Ti\u00ean Ph\u01b0\u1edbc v\u1edbi di\u1ec7n t\u00edch hi\u1ec7n nay v\u00e0o kho\u1ea3ng 3.760 ha. C\u00e1c l\u00e2m ph\u1ea7n \u0111i\u1ec1u tra tuy\u1ec3n ch\u1ecdn c\u00e2y tr\u1ed9i c\u00f3 tu\u1ed5i t\u1eeb 15 – 23 tu\u1ed5i, \u0111\u00e3 th\u00e0nh th\u1ee5c v\u1ec1 m\u1eb7t sinh s\u1ea3n, ra hoa v\u00e0 \u0111\u1eadu qu\u1ea3. Di\u1ec7n t\u00edch l\u00e2m ph\u1ea7n kh\u00f4ng l\u1edbn, dao \u0111\u1ed9ng t\u1eeb 0,5 – 3 ha, ph\u1ea7n l\u1edbn c\u00e1c l\u00e2m ph\u1ea7n n\u00e0y \u0111\u1ec1u \u0111\u00e3 ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a t\u1ec9a th\u01b0a t\u1ea7ng d\u01b0\u1edbi v\u00e0 t\u1ec9a c\u00e0nh, m\u1eadt \u0111\u1ed9 c\u00f2n l\u1ea1i dao \u0111\u1ed9ng 300 – 2.500 c\u00e2y ha v\u00e0 c\u00f3 ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u. Ch\u1ec9 c\u00f3 3 huy\u1ec7n c\u00f3 l\u00e2m ph\u1ea7n \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau ch\u1ecdn gi\u1ed1ng l\u00e0 Ph\u01b0\u1edbc S\u01a1n, Nam Tr\u00e0 My v\u00e0 B\u1eafc Tr\u00e0 My. \u0110\u00e3 tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 213 c\u00e2y tr\u1ed9i d\u1ef1 tuy\u1ec3n \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c ti\u00eau ch\u00ed v\u00e0 ch\u1ec9 s\u1ed1 \u0111\u1ec1 ra, trong \u0111\u00f3 150 c\u00e2y tr\u1ed9i d\u1ef1 tuy\u1ec3n c\u00f3 h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u cao, dao \u0111\u1ed9ng 2,2 – 10,73%, trung b\u00ecnh l\u00e0 5,83%, trong \u0111\u00f3 c\u00f3 t\u1edbi 137\/150 c\u00e2y d\u1ef1 tuy\u1ec3n chi\u1ebfm 91,3% t\u1ed5ng s\u1ed1 c\u00e2y ph\u00e2n t\u00edch c\u00f3 h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u l\u1edbn h\u01a1n 4%. Qu\u1ebf tr\u00e0 my c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u r\u1ea5t t\u1ed1t, t\u1ed5ng h\u00e0m l\u01b0\u1ee3ng Aldehyde cinamic v\u00e0 axit cinamic c\u00f3 trong tinh d\u1ea7u cao h\u01a1n 2,4 – 3,1 l\u1ea7n quy \u0111\u1ecbnh t\u1ed1i thi\u1ec3u c\u1ee7a \u0111\u01b0\u1ee3c \u0111i\u1ec3n H\u1ed3ng K\u00f4ng (t\u1ed1i thi\u1ec3u 1,7%). \u0110\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 100 c\u00e2y tr\u1ed9i ch\u00ednh th\u1ee9c c\u00f3 tu\u1ed5i t\u1eeb 15 – 20 tu\u1ed5i, c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng D1,3<\/sub>, Hvn<\/sub>, Dt<\/sub> \u0111\u1ec1u th\u1ec3 hi\u1ec7n s\u1ef1 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n h\u1eb3n so v\u1edbi trung b\u00ecnh c\u1ee7a l\u00e2m ph\u1ea7n. C\u00e2y c\u00f3 v\u1ecf d\u00e0y \u0111\u1ebfn r\u1ea5t d\u00e0y, dao \u0111\u1ed9ng 6,0 – 13,2 mm \u0111o t\u1ea1i v\u1ecb tr\u00ed 1,3 m. Di\u1ec7n t\u00edch v\u1ecf t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a c\u00e1c c\u00e2y tr\u1ed9i dao \u0111\u1ed9ng 133,5 – 418,5 dm2<\/sup>\/c\u00e2y, v\u01b0\u1ee3t 40,6 – 159,5% so v\u1edbi c\u00e2y trung b\u00ecnh c\u1ee7a l\u00e2m ph\u1ea7n. H\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u trong c\u00e2y tr\u1ed9i \u0111\u1ec1u \u0111\u1ea1t gi\u00e1 tr\u1ecb cao \u0111\u1ebfn r\u1ea5t cao, dao \u0111\u1ed9ng t\u1eeb 4,47 – 10,73%, l\u1edbn h\u01a1n r\u1ea5t nhi\u1ec1u quy \u0111\u1ecbnh c\u1ee7a \u0111\u01b0\u1ee3c \u0111i\u1ec3n Vi\u1ec7t Nam V (1%). \u0110\u00e2y l\u00e0 ngu\u1ed3n gi\u1ed1ng t\u1ed1t ph\u1ee5c v\u1ee5 cho c\u00f4ng t\u00e1c ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng Qu\u1ebf tr\u00e0 my c\u1ee7a t\u1ec9nh Qu\u1ea3ng Nam.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y tr\u1ed9i, Qu\u1ebf tr\u00e0 my, t\u1ec9nh Qu\u1ea3ng Nam<\/td>\n<\/tr>\n

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<\/a>Research on plus tree selection of Cinnamomum cassia<\/em> in Quang Nam province<\/strong><\/p>\n

Cinnamomum cassia<\/em> is a famous, precious NTFP and medicine of Quang Nam province and Vietnam as well. Cinnamomum cassia<\/em> is widely planted in 4 districts: Bac Tra My, Nam Tra My, Phuoc Son and Tien Phuoc with current total area about 3,760 ha. The surveyed stands of Cinnamomum cassia<\/em> has the ages from 15 to 23 years with reproductive mature, flowering and fruiting. The area of stands is not large, varries from 0.5 to 3 ha, almost stands have undergone thinning of lower layer and pruning. The stand density remains about 300 – 2,500 trees ha and unequally distributed. There are only 3 districts (Phuoc S\u01a1n, Nam Tra My and Bac Tra My) that have stands meeting objective of plus tree selection. As a result, 213 plus tree candidates have been selected, of which 150 plus tree candidates have high oil content, varries from 2.2 to 10.73%, on average is 5.83%. There are 137 among 150 plus trees candidates (occupied 91.3%) have oil content > 4%. Cinnamomum cassia<\/em> has a very good oil quality, total content of Aldehyde cinamic and acid cinamic in the oil is 2.4 – 3.1 times higher than minimum requirement of Hong Kong Medicinal Dictionary (minimum is 1.7%). 100 plus trees with ages of 15 – 20 years and dominant growth of D1,3<\/sub>, Hvn<\/sub>, Dt<\/sub> compared to stand mean values officially selected. The plus trees have thick and very thick bark, varries from 6.0 to 13.2 mm at height of 1.3 m. The relative bark area of plus trees varried from 133.5 to 418.5 dm2<\/sup>\/tree, 40.6 – 159.5% high than average value of the stand. The oil content of plus trees is from high to very high, varries from 4.47 to 10.73%, much higher than requirement of Vietnamese Medicinal Dictionary V (1%). These are good seed sources for Cinnamomum cassia<\/em> development in Quang Nam province.<\/p>\n

Keywords:<\/em><\/strong> Plus tree, Cinnamomum cassia, <\/em>Quang Nam province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U \u0110\u1eb6C \u0110I\u1ec2M SINH L\u00dd V\u00c0 BI\u1ec6N PH\u00c1P B\u1ea2O QU\u1ea2N\u00a0H\u1ea0T GI\u1ed0NG C\u00c2Y HU\u1ef6NH (Tarrietia javanica<\/em> Blume)\u00a0\u1ede V\u00d9NG B\u1eaeC TRUNG B\u1ed8<\/p>\n

<\/a>Ph\u1ea1m Ti\u1ebfn H\u00f9ng, Nguy\u1ec5n Th\u1ecb Thanh Nga, L\u00ea Xu\u00e2n To\u00e0n, Ho\u00e0ng V\u0103n Tu\u1ea5n<\/p>\n

Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p B\u1eafc Trung B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Hu\u1ef7nh l\u00e0 c\u00e2y g\u1ed7 l\u1edbn, b\u1ea3n \u0111\u1ecba v\u00e0 c\u00f3 ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean ch\u1ee7 y\u1ebfu \u1edf khu v\u1ef1c mi\u1ec1n Trung Vi\u1ec7t Nam. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y qu\u1ea3 Hu\u1ef7nh \u0111\u00e3 c\u1eaft c\u00e1nh c\u00f3 chi\u1ec1u d\u00e0i trung b\u00ecnh 17,4 mm, chi\u1ec1u r\u1ed9ng 13,1 mm; chi\u1ec1u d\u00e0i c\u00e1nh qu\u1ea3 trung b\u00ecnh l\u00e0 66,6 mm, chi\u1ec1u r\u1ed9ng c\u00e1nh qu\u1ea3 32,6 mm; t\u1ed5ng chi\u1ec1u d\u00e0i qu\u1ea3 c\u1ea3 c\u00e1nh l\u00e0 84 mm. H\u1ea1t gi\u1ed1ng Hu\u1ef7nh c\u00f3 \u0111\u1ed9 thu\u1ea7n \u0111\u1ea1t 95,92%, s\u1ed1 qu\u1ea3 Hu\u1ef7nh c\u1ea3 c\u00e1nh t\u1eeb 1.011 – 1.087 qu\u1ea3\/kg, s\u1ed1 qu\u1ea3 \u0111\u00e3 c\u1eaft c\u00e1nh giao \u0111\u1ed9ng t\u1eeb 1.396 \u0111\u1ebfn 1.424 qu\u1ea3\/kg. Kh\u1ed1i l\u01b0\u1ee3ng 1.000 qu\u1ea3 Hu\u1ef7nh c\u00f3 c\u00e1nh t\u1eeb 989,2 – 919,8 g v\u00e0 \u0111\u00e3 c\u1eaft c\u00e1nh t\u1eeb 702,3 – 716,2g. \u0110\u1ed9 \u1ea9m h\u1ea1t Hu\u1ef7nh sau thu h\u00e1i \u1edf v\u00f9ng B\u1eafc Trung B\u1ed9 trung b\u00ecnh l\u00e0 13,1%. Ty\u0309 l\u00ea\u0323 na\u0309y m\u00e2\u0300m c\u1ee7a h\u1ea1t Hu\u1ef7nh l\u00e0 82,3%. Th\u1eddi gian na\u0309y m\u00e2\u0300m c\u1ee7a ha\u0323t t\u1eeb 19 – 21 ng\u00e0y. H\u1ea1t b\u1eaft \u0111\u1ea7u n\u1ea3y m\u1ea7m sau 5 ng\u00e0y gieo v\u00e0 \u0111\u1ea1t t\u1ef7 l\u1ec7 cao nh\u1ea5t v\u00e0o ng\u00e0y th\u1ee9 9. Nhi\u1ec7t \u0111\u1ed9 c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t \u0111\u1ebfn kh\u1ea3 n\u0103ng n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t. H\u1ea1t n\u1ea3y m\u1ea7m cao nh\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 27 – 29o<\/sup>C, \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n th\u00ec t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m th\u1ea5p h\u01a1n v\u00e0 th\u1eddi gian h\u1ea1t h\u1ea1t b\u1eaft \u0111\u1ea7u n\u1ea3y m\u1ea7m k\u00e9o d\u00e0i h\u01a1n. B\u1ea3o qu\u1ea3n h\u1ea1t trong t\u00fai v\u1ea3i \u0111\u1ef1ng trong chum \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng l\u00e0 c\u00f4ng th\u1ee9c t\u1ed1t nh\u1ea5t, sau 1 th\u00e1ng b\u1ea3o qu\u1ea3n t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u00f2n 60,67%, sau 3 th\u00e1ng b\u1ea3o qu\u1ea3n t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u00f2n 45,33%; ki\u1ebfn ngh\u1ecb ch\u1ec9 n\u00ean b\u1ea3o qu\u1ea3n h\u1ea1t trong th\u1eddi gian 3 – 4 th\u00e1ng v\u00ec sau th\u1eddi gian n\u00e0y t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m s\u1ebd xu\u1ed1ng th\u1ea5p.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110\u1eb7c \u0111i\u1ec3m sinh l\u00fd h\u1ea1t gi\u1ed1ng, b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng, c\u00e2y Hu\u1ef7nh, v\u00f9ng B\u1eafc Trung b\u1ed9<\/td>\n<\/tr>\n

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Research on physiological characteristics and seed storage measures of Tarrietia javanica<\/em> Blume in Central North region<\/strong><\/p>\n

Tarrietia javanica<\/em> Blume is a native, big-sized timber species, widely distributed in Central region of Vietnam. The research results show that the length of fruit without wing is 17.4 mm, the width is 13.1 mm; the length of wing in 66.6 mm, width of wing is 32.6 mm; total length of fruit with wing is 84 mm. The seed purity is 95.92%, number of fruits with wings is 1,011 – 1,087 per kg, number of fruits without wings is about 1,396 – 1,424 per kg. The weight of 1.000 fruits with wings is about 989.2 – 919.8 g and without wings is about 702.3 – 716.2g. The moisture of seeds collected in Central north region on average is 13.1%. Germination rate of seeds is 82.3%. Germination time of seeds is 19 – 21 days. Seeds start germinating in 5th<\/sup> day after sowing and getting the highest germination rate in 9th<\/sup> day. Temperature greatly affects germination possibility of seeds. The highest germination rate occurs at temperature 27 – 29o<\/sup>C, at lower temperature germination rate is decreased and the time that\u2019s seeds start germinating will be longer. Storage of seeds can be done in cloth bags and put in the jar at room temperature, germination rate after 1 month storage is 60.67%, after 3 months remains 45.33%. It is recommended that storage of seeds of Tarrietia javanica<\/em> can be applied by only 3 – 4 months because after this time germination rate shaply decreases.<\/p>\n

Keywords:<\/em><\/strong> Biological characteristics of seeds, seed storage, Tarrietia javanica<\/em> Blume, Central North region<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>SINH TR\u01af\u1edeNG C\u1ee6A C\u00c1C D\u00d2NG V\u00d4 T\u00cdNH\u00a0KEO L\u00c1 TR\u00c0M (Acacia auriculiformis<\/em>) \u1ede QU\u1ea2NG NINH<\/p>\n

<\/a>Ph\u1ea1m \u0110\u00ecnh S\u00e2m1<\/sup>, Ho\u00e0ng Th\u1ecb Nhung1<\/sup>, H\u1ed3 Trung L\u01b0\u01a1ng1<\/sup>,
\nNguy\u1ec5n Thanh S\u01a1n1<\/sup>, Nguy\u1ec5n H\u1eefu Th\u1ecbnh1<\/sup>,Nguy\u1ec5n Huy S\u01a1n2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh
\n2 <\/sup>H\u1ed9i Khoa h\u1ecdc K\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng c\u1ee7a 12 d\u00f2ng v\u00f4 t\u00ednh Keo l\u00e1 tr\u00e0m \u1edf giai \u0111o\u1ea1n 5 n\u0103m tu\u1ed5i t\u1ea1i Qu\u1ea3ng Ninh cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t gi\u1eefa c\u00e1c d\u00f2ng v\u00f4 t\u00ednh Keo l\u00e1 tr\u00e0m v\u1ec1 t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng (Fpr<0,001). Nh\u00f3m c\u00e1c d\u00f2ng v\u00f4 t\u00ednh Keo l\u00e1 tr\u00e0m c\u00f3 n\u0103ng su\u1ea5t g\u1ed7 cao nh\u1ea5t g\u1ed3m Clt7, Clt26, Clt98 v\u00e0 Clt57, \u0111\u1ea1t n\u0103ng su\u1ea5t t\u1eeb 16,5 – 23,0 m3<\/sup>\/ha\/n\u0103m; nh\u00f3m th\u1ee9 hai g\u1ed3m c\u00e1c d\u00f2ng Clt133, Clt19, Clt43 v\u00e0 AA9, n\u0103ng su\u1ea5t g\u1ed7 ch\u1ec9 \u0111\u1ea1t t\u1eeb 11,1 – 15,5 m3<\/sup>\/ha\/n\u0103m; th\u1ea5p nh\u1ea5t l\u00e0 nh\u00f3m c\u00e1c d\u00f2ng Bvlt85, Clt25, Bvlt83 v\u00e0 Clt18, ch\u1ec9 \u0111\u1ea1t t\u1eeb 5,8 – 9,1 m3<\/sup>\/ha\/n\u0103m. Tuy nhi\u00ean, c\u00e1c ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y c\u1ee7a Keo l\u00e1 tr\u00e0m \u1edf giai \u0111o\u1ea1n 5 n\u0103m tu\u1ed5i ch\u01b0a c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea (Fpr > 0,001). K\u1ebft qu\u1ea3 \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c s\u00e1u d\u00f2ng v\u00f4 t\u00ednh c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng nhanh, tr\u1eef l\u01b0\u1ee3ng g\u1ed7 c\u00e2y \u0111\u1ee9ng l\u1edbn, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ed1t \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo th\u1ee9 t\u1ef1 t\u1eeb cao xu\u1ed1ng th\u1ea5p l\u00e0 Clt98, Clt26, Clt57, Clt7, Clt133 v\u00e0 AA9 c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng nhanh, tr\u1eef l\u01b0\u1ee3ng g\u1ed7 c\u00e2y \u0111\u1ee9ng l\u1edbn, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ed1t, \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn \u1edf Qu\u1ea3ng Ninh n\u00f3i ri\u00eang v\u00e0 v\u00f9ng \u0110\u00f4ng B\u1eafc B\u1ed9 n\u00f3i chung. Trong \u0111\u00f3 c\u00e1c d\u00f2ng Clt98, Clt26, Clt57 t\u1ea1i th\u1eddi \u0111i\u1ec3m 3,5 n\u0103m tu\u1ed5i \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 c\u00e1c gi\u1ed1ng m\u1edf r\u1ed9ng cho tr\u1ed3ng r\u1eebng \u1edf v\u00f9ng \u0110\u00f4ng B\u1eafc B\u1ed9 theo \u0111\u1ec1 t\u00e0i nghi\u00ean c\u1ee9u c\u1ea5p B\u1ed9 \u201c<\/strong>Nghi\u00ean c\u1ee9u h\u1ec7 th\u1ed1ng c\u00e1c bi\u00ea\u0323n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng th\u00e2m canh keo lai, Keo tai t\u01b0\u01a1\u0323ng va\u0300 Keo la\u0301 tra\u0300m cung c\u00e2\u0301p g\u1ed7 l\u1edbn tr\u00ean \u0111\u1ea5t tr\u1ed3ng m\u1edbi\u201d<\/em> giai \u0111o\u1ea1n 2015 – 2019.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u00f2ng v\u00f4 t\u00ednh, Keo l\u00e1 tr\u00e0m, kh\u1ea3o nghi\u1ec7m gi\u1ed1ng m\u1edf r\u1ed9ng, sinh tr\u01b0\u1edfng, Qu\u1ea3ng Ninh<\/td>\n<\/tr>\n

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<\/a>Growth of Acacia auriculiformis<\/em> clonal varieties in Quang Ninh<\/strong><\/p>\n

The results of growth evaluation of 12 Acacia auriculiformis<\/em> clonal varieties at the 5 – year-old stage in Quang Ninh showed that there was a significant difference among them in terms of all growth parameters (Fpr< 0.001). The group of Acacia auriculiformis<\/em> varieties with the highest wood yield included Clt7, Clt26, Clt98 and Clt57, with a yield of 16.5 – 23.0 m3<\/sup>\/ha\/year; the second group included Clt133, Clt19, Clt43 and AA9 with wood yield of only 11.1 – 15.5 m3<\/sup>\/ha\/year; The lowest is the group Bvlt85, Clt25, Bvlt83 and Clt18, reaching only 5.8 – 9.1 m3<\/sup>\/ha\/year. However, there was no statistically significant difference in the stem quality parameters of Acacia auriculiformis<\/em> at the 5 – year-old stage (Fpr > 0.001). The results have identified six varieties with fast growth ability, large amount of standing volume, good trunk quality, selected in order from high to low, namely Clt98, Clt26, Clt57, Clt7, Clt133 and AA9, meeting the target of sawlog plantations in Quang Ninh in particular and the Northeast region in general. In which, 3.5 – year-old Clt98, Clt26, Clt57 had been identified as extended varieties for afforestation in the Northeast region according to the ministry-level research project “Study on a system of intensive afforestation technical measures of Acacia hybrid<\/em>, Acacia mangium<\/em> and Acacia auriculiformis<\/em> for sawlog provision on new planting land\u201d in the period 2015 – 2019.<\/p>\n

Keywords: <\/em><\/strong>Acacia auriculiformis<\/em>, clonal varieties, extended variety testing, growth, Quang Ninh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A M\u1eacT \u0110\u1ed8 \u0110\u1ebeN SINH TR\u01af\u1edeNG\u00a0C\u1ee6A KEO L\u00c1 TR\u00c0M (Acacia auriculiformis<\/em>) \u1ede QU\u1ea2NG NINH<\/p>\n

<\/a>Ph\u1ea1m \u0110\u00ecnh S\u00e2m1<\/sup>, H\u1ed3 Trung L\u01b0\u01a1ng1<\/sup>, Ho\u00e0ng V\u0103n Th\u00e0nh1<\/sup>,
\nTr\u1ea7n Th\u1ecb H\u1ed3ng V\u00e2n1<\/sup>, H\u00e0 Th\u1ecb Mai1<\/sup>, Nguy\u1ec5n Huy S\u01a1n2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh
\n2 <\/sup>H\u1ed9i Khoa h\u1ecdc K\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u01a1\u0309ng cu\u0309a m\u00e2\u0323t \u0111\u00f4\u0323 tr\u1ed3ng \u0111\u00ea\u0301n sinh tr\u01b0\u01a1\u0309ng cu\u0309a Keo la\u0301 tra\u0300m (Acacia auriculiformis<\/em>) giai \u0111o\u1ea1n 5 n\u0103m tu\u1ed5i \u01a1\u0309 Qua\u0309ng Ninh v\u1edbi 4 c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9: 1.660 c\u00e2y\/ha (3 \u00b4 2 m); 1.110 c\u00e2y\/ha (3 \u00b4 3 m); 830 c\u00e2y\/ha (c\u1ef1 ly 4 \u00b4 3 m); 625 c\u00e2y\/ha (c\u1ef1 ly 4 \u00b4 4 m) cho th\u1ea5y tr\u1ed3ng r\u1eebng Keo l\u00e1 tr\u00e0m th\u00edch h\u1ee3p l\u00e0 1.660 c\u00e2y\/ha (3 \u00b4 2 m). Sau 5 n\u0103m tu\u1ed5i, tr\u1eef l\u01b0\u1ee3ng g\u1ed7 c\u00e2y \u0111\u1ee9ng \u0111\u1ea1t 104,0 m3<\/sup>\/ha, n\u0103ng su\u1ea5t g\u1ed7 cao nh\u1ea5t \u0111\u1ea1t 20,8 m3<\/sup>\/ha\/n\u0103m. Trong khi \u0111\u00f3 m\u1eadt \u0111\u1ed9 t\u1eeb 1.110 c\u00e2y\/ha, 830 c\u00e2y\/ha v\u00e0 625 c\u00e2y\/ha ch\u1ec9 \u0111\u1ea1t v\u1edbi c\u00e1c tr\u1ecb s\u1ed1 t\u01b0\u01a1ng \u1ee9ng l\u00e0: 84,6 m3<\/sup>\/ha (16,9 m3<\/sup>\/ha\/n\u0103m); 87,4 m3<\/sup>\/ha (17,5 m3<\/sup>\/ha\/n\u0103m); 69,9 m3<\/sup>\/ha (14,0 m3<\/sup>\/ha\/n\u0103m). Sau 5 n\u0103m tr\u1ed3ng \u1edf m\u1eadt \u0111\u1ed9 1.660 c\u00e2y\/ha c\u00f3 th\u1ec3 t\u1ec9a th\u01b0a kho\u1ea3ng 25% so v\u1edbi m\u1eadt \u0111\u1ed9 tr\u1ed3ng ban \u0111\u1ea7u, ch\u1ee7 y\u1ebfu l\u00e0 t\u1ec9a th\u01b0a t\u1ea7ng d\u01b0\u1edbi. \u0110\u1ed1i v\u1edbi r\u1eebng tr\u1ed3ng m\u1eadt \u0111\u1ed9 1.110 c\u00e2y\/ha, sau 5 n\u0103m tu\u1ed5i ch\u01b0a c\u1ea7n thi\u1ebft ph\u1ea3i t\u1ec9a th\u01b0a.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Keo l\u00e1 tr\u00e0m, m\u1eadt \u0111\u1ed9, sinh tr\u01b0\u1edfng, Qu\u1ea3ng Ninh<\/td>\n<\/tr>\n

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<\/a>Effects of density on the growth of Acacia auriculiformis<\/em> in Quang Ninh<\/strong><\/p>\n

Research results on the effects of density on the growth of 5 – year-old Acacia auriculiformis<\/em> in Quang Ninh with 4 density formulas: 1,660 trees\/ha (3 \u00b4 2 m); 1,110 trees\/ha (3 \u00b4 3 m); 830 trees\/ha (4 \u00b4 3 m); 625 trees\/ha (4 m \u00b4 4 m) showed that the suitable planting density of Acacia auriculiformis<\/em> was 1,660 trees\/ ha (3 \u00b4 2 m), after 5 years of age, the standing volume was 104.0 m3<\/sup>\/ha, the highest timber yield was 20.8 m3<\/sup>\/ha\/year. Meanwhile, the densities of 1,110 trees\/ha, 830 trees\/ha and 625 trees\/ha, only had the respective values at: 84.6 m3<\/sup>\/ha and 16.9 m3<\/sup>\/ha\/year; 87.4 m3<\/sup>\/ha and 17.5 m3<\/sup>\/ha\/ year; 69.9 m3<\/sup>\/ha and 14.0 m3<\/sup>\/ha\/year. After 5 years of planting at a density of 1,660 trees\/ha, it was possible to apply thinning at about 25% compared to the initial density, mainly lower strata thinning. For the density of 1,110 trees\/ha, it was not necessary to apply thinning after 5 years of age.<\/p>\n

Keywords:<\/em><\/strong> Acacia auriculiformis<\/em>, density, growth, Quang Ninh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>TH\u1ef0C TR\u1ea0NG V\u00c0 \u0110I\u1ec0U KI\u1ec6N L\u1eacP \u0110\u1ecaA G\u00c2Y TR\u1ed2NG\u00a0B\u1ea6N CHUA (Sonneratia caseolaris <\/em>(L.) Engler)\u00a0V\u00c0 TRANG (Kandelia obovata <\/em>Sheue, Liu & Yong)\u00a0\u1ede V\u00d9NG VEN BI\u1ec2N B\u1eaeC B\u1ed8<\/p>\n

<\/a>L\u00ea V\u0103n Th\u00e0nh, H\u00e0 \u0110\u00ecnh Long, Ph\u1ea1m Ng\u1ecdc Th\u00e0nh, \u0110\u1ed7 Th\u1ecb Kim Nhung
\nT\u1ea1 V\u0103n H\u00e2n, \u0110o\u00e0n Thanh T\u00f9ng, Tr\u01b0\u01a1ng Quang Tr\u00ed, Nguy\u1ec5n Xu\u00e2n \u0110\u00e0i, H\u00e0 V\u0103n N\u0103m<\/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

R\u1eebng ng\u1eadp m\u1eb7n c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong ph\u00f2ng ch\u1ed1ng thi\u00ean tai, ph\u00f2ng h\u1ed9 b\u1ea3o v\u1ec7 b\u1edd bi\u1ec3n, h\u1ea1n ch\u1ebf t\u00e1c h\u1ea1i c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu. T\u1ea1i v\u00f9ng ven bi\u1ec3n B\u1eafc B\u1ed9, B\u1ea7n chua v\u00e0 Trang l\u00e0 2 lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng ch\u00ednh, hi\u1ec7n tr\u1ed3ng nhi\u1ec1u nh\u1ea5t \u1edf t\u1ec9nh Th\u00e1i B\u00ecnh (4.063,53 ha), \u00edt nh\u1ea5t l\u00e0 t\u1ec9nh Qu\u1ea3ng Ninh (346,51 ha). B\u1ea7n chua sau 14 n\u0103m tr\u1ed3ng \u1edf huy\u1ec7n Kim S\u01a1n, t\u1ec9nh Ninh B\u00ecnh v\u00e0 \u1edf huy\u1ec7n Ti\u1ec1n H\u1ea3i, tinh Th\u00e1i B\u00ecnh; Trang sau 15 n\u0103m tr\u1ed3ng \u1edf huy\u1ec7n Th\u00e1i Th\u1ee5y, t\u1ec9nh Th\u00e1i B\u00ecnh v\u00e0 \u1edf huy\u1ec7n Ngh\u0129a H\u01b0ng, t\u1ec9nh Nam \u0110\u1ecbnh cho sinh tr\u01b0\u1edfng nhanh, \u0111\u00e1p \u1ee9ng m\u1ee5c ti\u00eau ph\u00f2ng h\u1ed9 t\u1ed1t nh\u1ea5t. \u0110i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba g\u00e2y tr\u1ed3ng B\u1ea7n chua v\u00e0 Trang t\u1eeb thu\u1eadn l\u1ee3i \u0111\u1ebfn kh\u00f3 kh\u0103n. B\u1ea7n chua c\u00f3 th\u1ec3 tr\u1ed3ng tr\u00ean \u0111\u1ea5t c\u00f3 \u0111\u1ed9 m\u1eb7n \u00edt cho \u0111\u1ebfn m\u1eb7n nhi\u1ec1u th\u1eadm ch\u00ed l\u00e0 m\u1eb7n mu\u1ed1i; \u0111\u1ea5t c\u00f3 \u0111\u1ed9 th\u00e0nh th\u1ee5c t\u1eeb b\u00f9n m\u1ec1m (h\u00e0m l\u01b0\u1ee3ng s\u00e9t v\u00e0 limon chi\u1ebfm 84,42%) \u0111\u1ebfn \u0111\u1ea5t c\u00e1t pha (t\u1ef7 l\u1ec7 c\u00e1t chi\u1ebfm 71,31%). Trang c\u00f3 th\u1ec3 tr\u1ed3ng v\u00e0 cho ph\u00e1t tri\u1ec3n t\u1ed1t tr\u00ean \u0111\u1ea5t c\u00f3 \u0111\u1ed9 m\u1eb7n nhi\u1ec1u \u0111\u1ebfn m\u1eb7n mu\u1ed1i; \u0111\u1ea5t c\u00f3 \u0111\u1ed9 th\u00e0nh th\u1ee5c t\u1eeb b\u00f9n m\u1ec1m (h\u00e0m l\u01b0\u1ee3ng s\u00e9t v\u00e0 limon chi\u1ebfm 82,45%) \u0111\u1ebfn \u0111\u1ea5t c\u00e1t pha (t\u1ef7 l\u1ec7 c\u00e1t chi\u1ebfm 74,62%), trong \u0111\u00f3 t\u1ed1t nh\u1ea5t l\u00e0 tr\u1ed3ng tr\u00ean \u0111\u1ea5t b\u00f9n m\u1ec1m.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea7n chua (Sonneratia caseolaris<\/em> (L.) Engler), Trang (Kandelia obovata<\/em> Sheue, Liu & Yong), c\u00e2y ng\u1eadp m\u1eb7n, \u0111i\u1ec1u ki\u1ec7n g\u00e2y tr\u1ed3ng, sinh tr\u01b0\u1edfng<\/td>\n<\/tr>\n

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<\/a>Actual state and site condition for planting Sonneratia caseolaris <\/em>(L.) Engler and Kandelia obovata <\/em>Sheue, Liu & Yong at the Northern Coastal Areas<\/strong><\/p>\n

Mangrove forests play an essential role in disaster prevention, coastal protection and reduction of climate change impact. Sonneratia caseolaris <\/em>(L.) Engler and Kandelia obovata <\/em>Sheue, Liu & Yong are the two primary mangrove species which currently being grown the most in Thai Binh province (4,063.53 ha), and the least in Quang Ninh province (346.51 ha). Sonneratia caseolaris <\/em>(after 14 years being planted in Kim Son district, Ninh Binh province and in Tien Hai district, Thai Binh province), and Kandelia obovata <\/em>(after 15 years being planted in Thai Thuy district, Thai Binh province and in Nghia Hung district, Nam Dinh province) achieved rapid growth and the best result for protection purpose. Site condition for planting Sonneratia caseolaris <\/em>and Kandelia obovata <\/em>range from favorable to difficult. Sonneratia caseolaris <\/em>can be grown on soils with low to high salinity or even salty salinity; The soil texture ranges from soft mud (clay and limon content accounted for 84.42%) to mixed sandy soil (the percentage of sand accounted for 71.31%). Kandelia obovata <\/em>can be grown and well-developed on soils with high salinity to salty salinity; soil texture from soft mud (clay and limon content accounts for 82.45%) to mixed sandy soil (sand ratio accounts for 74.62%), in which it is best to plant on soft mud soil.<\/p>\n

Keywords:<\/em><\/strong> Sonneratia caseolaris <\/em>(L.) Engler, Kandelia obovata <\/em>Sheue, Liu & Yong, mangrove species, planting condition, growth<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a><\/a>NGHI\u00caN C\u1ee8U M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC\u00a0C\u1ee6A TR\u00d4M (Sterculia foetida<\/em> L.) PH\u00c2N B\u1ed0 T\u1ef0 NHI\u00caN\u00a0T\u1ea0I V\u00d9NG NAM TRUNG B\u1ed8<\/p>\n

<\/a>Ph\u00f9ng V\u0103n Khen1<\/sup>, Ph\u00f9ng V\u0103n Khang1<\/sup>, Nguy\u1ec5n Tr\u1ecdng Nam1<\/sup>;
\nNguy\u1ec5n Qu\u1ed1c \u0110\u1ea1t1<\/sup>, L\u00ea Tri\u1ec7u Duy1<\/sup>, Tr\u1ea7n V\u0103n Nho1<\/sup>, H\u1ed3 S\u1ef9 Trung2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam B\u1ed9
\n2<\/sup>Chi c\u1ee5c Ki\u1ec3m l\u00e2m Ninh Thu\u1eadn<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

T\u1ea1i khu v\u1ef1c Nam Trung B\u1ed9, lo\u00e0i Tr\u00f4m c\u00f3 ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean ch\u1ee7 y\u1ebfu \u1edf tr\u1ea1ng th\u00e1i r\u1eebng th\u1ee9 sinh ph\u1ee5c h\u1ed3i sau khai th\u00e1c v\u00e0 t\u1eadp trung nhi\u1ec1u t\u1ea1i c\u00e1c t\u1ec9nh Ninh Thu\u1eadn v\u00e0 B\u00ecnh Thu\u1eadn. Tr\u00f4m th\u01b0\u1eddng m\u1ecdc \u1edf n\u01a1i c\u00f3 \u0111\u1ecba h\u00ecnh t\u01b0\u01a1ng \u0111\u1ed1i b\u1eb1ng ph\u1eb3ng, \u0111\u1ed9 d\u1ed1c d\u01b0\u1edbi 150<\/sup>, \u0111\u1ed9 cao d\u01b0\u1edbi 400 m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n. Tr\u00f4m c\u00f3 kh\u1ea3 n\u0103ng s\u1ed1ng trong \u0111i\u1ec1u ki\u1ec7n n\u1eafng n\u00f3ng, kh\u00f4 h\u1ea1n v\u1edbi n\u1ec1n nhi\u1ec7t \u0111\u1ed9 cao, l\u01b0\u1ee3ng m\u01b0a th\u1ea5p, l\u01b0\u1ee3ng b\u1ed1c h\u01a1i cao h\u01a1n l\u01b0\u1ee3ng m\u01b0a. Tr\u00f4m c\u0169ng th\u01b0\u1eddng ph\u00e2n b\u1ed1 tr\u00ean \u0111\u1ea5t c\u00f3 kh\u1ea3 n\u0103ng tho\u00e1t n\u01b0\u1edbc t\u1ed1t, h\u00e0m l\u01b0\u1ee3ng dinh d\u01b0\u1ee1ng th\u1ea5p. T\u1ed5 th\u00e0nh l\u00e2m ph\u1ea7n n\u01a1i c\u00f3 lo\u00e0i Tr\u00f4m ph\u00e2n b\u1ed1 th\u01b0\u1eddng \u0111\u01a1n gi\u1ea3n, t\u1eeb 12 \u0111\u1ebfn 15 lo\u00e0i, m\u1eadt \u0111\u1ed9 th\u1ea5p, c\u00e2y m\u1ecdc ph\u00e2n t\u00e1n v\u00e0 chi\u1ebfm \u01b0u th\u1ebf l\u00e0 c\u00e1c lo\u00e0i c\u00e2y ti\u00ean phong \u01b0a s\u00e1ng. M\u1eadt \u0111\u1ed9 t\u00e1i sinh c\u1ee7a l\u00e2m ph\u1ea7n \u0111i\u1ec1u tra l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p nh\u01b0ng t\u00e1i sinh c\u1ee7a Tr\u00f4m l\u1ea1i cao, dao \u0111\u1ed9ng t\u1eeb 1.000 – 3.400 c\u00e2y\/ha, c\u00e2y con c\u00f3 ph\u1ea9m ch\u1ea5t t\u1ed1t v\u00e0 ngu\u1ed3n g\u1ed1c t\u00e1i sinh ch\u1ee7 y\u1ebfu t\u1eeb h\u1ea1t, c\u00e2y t\u00e1i sinh ch\u1ee7 y\u1ebfu ph\u00e2n b\u1ed1 quanh g\u1ed1c c\u00e2y m\u1eb9.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc, Tr\u00f4m, Gum<\/td>\n<\/tr>\n

\n

<\/a>Research on some silvicultural characteristics of Sterculia foetida<\/em> L. natural distributions in the South Central of Vietnam<\/strong><\/p>\n

In South Central Vietnam, Sterculia foetid<\/em>a L. usually natural distributed in subgroups of secondary-Forest restoration after harvesting in Ninh Thuan and Binh Thuan provinces. Sterculia foetida<\/em> L. often grown at topography has relatively flat, the slope below 150<\/sup>, altitude below 400 m above sea level. Sterculia foetida<\/em> L. has the ability to live in hot and dry conditions with high degree of heat, low rainfall, and evaporation bigger than precipitation. Sterculia foetida<\/em> L. is usually distributed on well-drained soil and low nutritional content. The composition of place Sterculia foetida<\/em> L. is distributed is often simple, from 12 to 15 species, with low density and scattered grown and dominated by light-loving pioneer tree species. The density of regeneration trees of the composition was relatively low, but the regeneration of Sterculia foetida<\/em> L. was many, number seedling is 1,000 to 3,400 trees\/ha, the regeneration were of good quality and origin of it was mainly from seeds. It is often regenerative around the base of the mother trees.<\/p>\n

Keywords:<\/em><\/strong> Silvicultural characteristics, Sterculia foetida<\/em> L.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>SINH KH\u1ed0I V\u00c0 C\u1ea4U TR\u00daC R\u1eeaNG T\u1ef0 NHI\u00caN\u00a0T\u1ea0I KHU B\u1ea2O T\u1ed2N THI\u00caN NHI\u00caN \u0110\u1ed2NG S\u01a0N – K\u1ef2 TH\u01af\u1ee2NG,\u00a0QU\u1ea2NG NINH<\/p>\n

<\/a>Tr\u1ea7n V\u0103n \u0110\u00f4, Nguy\u1ec5n To\u00e0n Th\u1eafng, V\u0169 Ti\u1ebfn L\u00e2m, Ho\u00e0ng Thanh S\u01a1n,
\nHo\u00e0ng V\u0103n Th\u00e0nh, D\u01b0\u01a1ng Quang Trung, \u0110\u00e0o Trung \u0110\u1ee9c, Tr\u1ecbnh Ng\u1ecdc Bon,
\nTr\u1ea7n Cao Nguy\u00ean, Tr\u01b0\u01a1ng Tr\u1ecdng Kh\u00f4i, Tr\u1ea7n H\u1ea3i Long<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean \u0110\u1ed3ng S\u01a1n – K\u1ef3 Th\u01b0\u1ee3ng c\u00f3 t\u1ed5ng di\u1ec7n t\u00edch t\u1ef1 nhi\u00ean 15.593,81 ha, g\u1ed3m r\u1eebng t\u1ef1 nhi\u00ean ngh\u00e8o (TXN) 45,16%, r\u1eebng h\u1ed7n giao 26,19% (HG), r\u1eebng t\u1ef1 nhi\u00ean trung b\u00ecnh 11,52% (TXB) v\u00e0 r\u1eebng t\u1ef1 nhi\u00ean ngh\u00e8o ki\u1ec7t 8,62% (TXK). T\u1ed5ng s\u1ed1 35 \u00f4 ti\u00eau chu\u1ea9n (OTC) \u0111i\u1ec3n h\u00ecnh t\u1ea1m th\u1eddi \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh lo\u00e0i c\u00e2y, \u0111o sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh (DBH) v\u00e0 chi\u1ec1u cao cho to\u00e0n b\u1ed9 c\u00e2y c\u00f3 DBH \u2265 5 cm, qua \u0111\u00f3 x\u00e1c \u0111\u1ecbnh sinh kh\u1ed1i (AGB) cho t\u1eebng c\u00e2y. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai cho th\u1ea5y c\u00f3 s\u1ef1 kh\u00e1c nhau r\u00f5 r\u1ec7t v\u1ec1 s\u1ed1 lo\u00e0i, m\u1eadt \u0111\u1ed9 v\u00e0 AGB gi\u1eefa 4 tr\u1ea1ng th\u00e1i r\u1eebng. TXB c\u00f3 s\u1ed1 lo\u00e0i (41\/OTC), m\u1eadt \u0111\u1ed9 c\u00e2y (965 c\u00e2y\/ha) v\u00e0 AGB (119,2 t\u1ea5n\/ha) l\u1edbn nh\u1ea5t v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 TXK (18 lo\u00e0i\/OTC, 408 c\u00e2y\/ha v\u00e0 sinh kh\u1ed1i 25,2 t\u1ea5n\/ha). Ph\u00e2n b\u1ed1 N\/DBH r\u1eebng HG c\u00f3 d\u1ea1ng 1 \u0111\u1ec9nh l\u1ec7ch tr\u00e1i v\u1edbi s\u1ed1 c\u00e2y nhi\u1ec1u nh\u1ea5t t\u1ea1i c\u1ea5p k\u00ednh t\u1eeb 10 cm \u0111\u1ebfn 15 cm, trong khi \u0111\u00f3 TXB, TXN v\u00e0 TXK c\u00f3 ph\u00e2n b\u1ed1 n\/DBH d\u1ea1ng gi\u1ea3m v\u1edbi s\u1ed1 c\u00e2y nhi\u1ec1u nh\u1ea5t t\u1ea1i c\u1ea5p k\u00ednh nh\u1ecf nh\u1ea5t (t\u1eeb 5 cm \u0111\u1ebfn 10 cm). K\u1ebft qu\u1ea3 cho th\u1ea5y r\u1eebng Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean \u0110\u1ed3ng S\u01a1n – K\u1ef3 Th\u01b0\u1ee3ng c\u00f3 c\u1ea5u tr\u00fac t\u01b0\u01a1ng \u0111\u1ed1i \u1ed5n \u0111\u1ecbnh, r\u1eebng c\u00f3 th\u1ec3 t\u1ef1 \u0111i\u1ec1u ch\u1ec9nh v\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ec3 h\u01b0\u1edbng t\u1edbi khu r\u1eebng c\u00f3 ch\u1ee9c n\u0103ng t\u1ed1t \u0111\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng, sinh th\u00e1i v\u00e0 t\u00edch l\u0169y carbon \u0111i\u1ec1u ti\u1ebft kh\u00ed h\u1eadu cho khu v\u1ef1c.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea3o t\u1ed3n \u0111a d\u1ea1ng, c\u1ea5u tr\u00fac, \u0111i\u1ec1u ti\u1ebft kh\u00ed h\u1eadu, t\u00edch l\u0169y carbon<\/td>\n<\/tr>\n

\n

<\/a>Biomass and structure of natural forest in Dong Son – Ky Thuong Natural Reserve Area, Quang Ninh<\/strong><\/p>\n

Dong Son – Ky Thuong Natural Reserve Area has an area of 15.593,81 ha, including poor forest (TXN) of 45.16%, woody-bamboo forest (HG) of 26.19%, medium forest (TXB) of 11.52%, and very poor forest (TXK) of 8.62%. Thirty five typical temporal plots were established for identifying species and measuring diameter at breast height (DBH) and stem height for all stems with DBH \u2265 5 cm, which was used for individual aboveground biomass (AGB) estimation. The results indicated the significant differences among four forest types in species number, stem density, and AGB. The highest were found in TXB (41 species, 965 trees\/ha, and 119.2 tons\/ha, respectively) and the lowest in TXK (18 species, 408 trees\/ha, and 25.2 tons\/ha, respectively). Stem-diameter distribution of HG had inverted-J shape with peak at 10 – 15 cm DBH, while TXB, TXN and TXK had exponential shape with the numerous stems at 5 – 10 cm DBH. It is concluded that forests at Dong Son – Ky Thuong Natural Reserve Area has stable structures, which can support forests grow and develop to fulfil its functions on environment, ecology, and carbon sequestration against global warming and climate change.<\/p>\n

Keywords:<\/em><\/strong> Carbon sequestration, diversity conservation, environment control, structure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>TH\u00c0NH PH\u1ea6N LO\u00c0I S\u00c2U H\u1ea0I C\u00c2Y S\u01a0N TRA (Docynia indica <\/em>Wallich) T\u1ea0I V\u00d9NG T\u00c2Y B\u1eaeC<\/p>\n

<\/a>Ph\u1ea1m Quang Thu, L\u00ea V\u0103n B\u00ecnh, Tr\u1ea7n Vi\u1ebft Th\u1eafng, Trang A T\u1ed5ng, B\u00f9i Quang Ti\u1ebfp<\/p>\n

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

\u0110i\u1ec1u tra th\u00e0nh ph\u1ea7n s\u00e2u h\u1ea1i c\u00e2y S\u01a1n tra (Docynia indica<\/em>) \u1edf 3 nh\u00f3m tu\u1ed5i c\u00e2y (\u2264 5 n\u0103m tu\u1ed5i; t\u1eeb 6 – 10 n\u0103m tu\u1ed5i; t\u1eeb 11 – 15 n\u0103m tu\u1ed5i) t\u1eeb th\u00e1ng 11\/2018 \u0111\u1ebfn 10\/2020 \u1edf v\u00f9ng T\u00e2y B\u1eafc ghi nh\u1eadn c\u00f3 28 lo\u00e0i thu\u1ed9c 17 h\u1ecd 3 b\u1ed9. Trong \u0111\u00f3, b\u1ed9 C\u00e1nh v\u1ea3y (Lepidoptera) c\u00f3 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i nhi\u1ec1u nh\u1ea5t v\u1edbi 14 lo\u00e0i thu\u1ed9c 9 h\u1ecd, b\u1ed9 C\u00e1nh c\u1ee9ng (Coleoptera) c\u00f3 11 lo\u00e0i thu\u1ed9c 5 h\u1ecd v\u00e0 b\u1ed9 C\u00e1nh n\u1eeda (Hemiptera) ch\u1ec9 c\u00f3 3 lo\u00e0i thu\u1ed9c 3 h\u1ecd. C\u1ea5p h\u1ea1i (R) c\u1ee7a c\u00e1c lo\u00e0i s\u00e2u dao \u0111\u1ed9ng 0,01 – 2,59. Trong s\u1ed1 28 lo\u00e0i s\u00e2u h\u1ea1i thu \u0111\u01b0\u1ee3c, lo\u00e0i X\u00e9n t\u00f3c \u0111\u1ee5c th\u00e2n (Bacchisa medioviolacea<\/em>) g\u00e2y h\u1ea1i \u1edf m\u1ee9c \u0111\u1ed9 h\u1ea1i n\u1eb7ng (R: 2,32 – 2,59) \u1edf S\u01a1n La, Y\u00ean B\u00e1i v\u00e0 L\u00e0o Cai; S\u00e2u \u0111o (Buzura suppressaria<\/em>) ch\u1ec9 g\u00e2y h\u1ea1i t\u1ea1i Y\u00ean B\u00e1i \u1edf m\u1ee9c h\u1ea1i n\u1eb7ng t\u1eeb 2,04 \u0111\u1ebfn 2,17; lo\u00e0i V\u00f2i voi \u0111\u1ee5c qu\u1ea3 (Curculio <\/em>sp.), S\u00e2u x\u00e1m \u0111\u1ee5c qu\u1ea3 (Carposina <\/em>sp.) v\u00e0 R\u1ec7p mu\u1ed9i xanh (Aphis citricola<\/em>) g\u00e2y h\u1ea1i \u1edf m\u1ee9c \u0111\u1ed9 trung b\u00ecnh (R: 1,07 – 1,83); c\u00e1c lo\u00e0i c\u00f2n l\u1ea1i g\u00e2y h\u1ea1i \u1edf m\u1ee9c \u0111\u1ed9 nh\u1eb9 (R: 0,01 – 0,41).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y S\u01a1n tra, c\u1ea5p h\u1ea1i, th\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u h\u1ea1i<\/td>\n<\/tr>\n

\n

<\/a>Insect pest species composition associated with Docynia indica <\/em>(Wallich) in the Northwest of Vietnam<\/strong><\/p>\n

The investigation of insect pest species composition associated Docynia indica<\/em> at three year-old tree groups (the year-old trees: \u2264 5; from 6 to 10; from 11 to 15) from 11\/2018 to 10\/2020 in the Northwest of Vietnam (including 5 provinces: Son La, Yen Bai, Lao Cai, Lai Chau and Dien Bien) recorded that there are 28 insect pest species belong to 17 families and 3 orders. In which, the highest number of species belongs to Lepidoptera order with 14 species, 11 species belong to Coleoptera order and only have 3 species belong to Hemiptera order. The average damage level (R) is from 0.01 to 2.59. Among the 28 insect pest species that have been recorded, Bacchisa medioviolacea<\/em> has the highest average damage level (R: 2.32 – 2.59) in Son La, Yen Bai and Lao Cai; Buzura suppressaria<\/em> only damages in Yen Bai with from 2.04 to 2.17; the following average damage level (R: 1.07 – 1.83) belong to three species including Curculio <\/em>sp., Carposina <\/em>sp. and Aphis citricola<\/em>; average damage level of the rest of species are only light (R: 0.01 – 0.41).<\/p>\n

Keywords:<\/em><\/strong> Damage level, Docynia indica<\/em>, insect pest species composition<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>B\u01af\u1edaC \u0110\u1ea6U \u0110\u00c1NH GI\u00c1 \u1ea2NH H\u01af\u1edeNG\u00a0C\u1ee6A GI\u1ea2I PH\u00c1P C\u00d4NG NGH\u1ec6 SINH H\u1eccC M\u00d4I TR\u01af\u1edcNG
\nTR\u00caN \u0110\u1ea4T B\u00c3I TH\u1ea2I KHAI TH\u00c1C THAN \u0110\u00d4NG CAO S\u01a0N\u00a0\u1ede QU\u1ea2NG NINH<\/p>\n

<\/a>V\u0169 Qu\u00fd \u0110\u00f4ng1<\/sup>, L\u00ea V\u0103n Th\u00e0nh1<\/sup>, \u0110o\u00e0n Th\u1ecb Th\u1ea3o1<\/sup>, L\u00ea Th\u1ecb Thu H\u1eb1ng1<\/sup>, H\u00e0 Th\u1ecb Thanh Mai1<\/sup>, \u0110\u1ed7 M\u1ea1nh D\u0169ng2<\/sup>, Nguy\u1ec5n Ho\u00e0ng Hu\u00e2n2<\/sup>, Ph\u1ea1m Tu\u1ea5n Anh2<\/sup>,<\/sub> Gi\u00e1p V\u0103n Ki\u00ean2<\/sup><\/p>\n

[1]<\/strong> Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng
\n2<\/sup>C\u00f4ng ty C\u1ed5 ph\u1ea7n Tin h\u1ecdc, C\u00f4ng ngh\u1ec7, M\u00f4i tr\u01b0\u1eddng – VINACOMIN<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u tr\u1ed3ng keo lai v\u00e0 Keo l\u00e1 tr\u00e0m tr\u00ean b\u00e3i th\u1ea3i \u0110\u00f4ng Cao S\u01a1n \u1edf \u0111\u1ed9 cao 300 m tr\u00ean m\u1eb7t bi\u1ec3n t\u1ea1i t\u1ec9nh Qu\u1ea3ng Ninh theo kho\u1ea3ng c\u00e1ch 2 \u00b4 2 m (2.500 c\u00e2y\/ha) v\u00e0 2 \u00b4 1 m (5.000 c\u00e2y\/ha), b\u00f3n ch\u1ebf ph\u1ea9m n\u1ea5m r\u1ec5 n\u1ed9i c\u1ed9ng sinh AM 100IP 5 g\/c\u00e2y cho th\u1ea5y sau 12 th\u00e1ng, c\u00e1c c\u00f4ng th\u1ee9c b\u00f3n ch\u1ebf ph\u1ea9m n\u1ea5m r\u1ec5 n\u1ed9i c\u1ed9ng sinh AM c\u00f3 c\u00e1c ch\u1ec9 s\u1ed1 h\u1ea7u h\u1ebft t\u1ed1t h\u01a1n so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng. C\u00e1c c\u00f4ng th\u1ee9c b\u00f3n ch\u1ebf ph\u1ea9m AM c\u00f3 c\u00e1c ch\u1ec9 ti\u00eau l\u00fd, h\u00f3a t\u00ednh v\u00e0 kim lo\u1ea1i n\u1eb7ng \u0111\u1ec1u thay \u0111\u1ed5i theo h\u01b0\u1edbng c\u00f3 l\u1ee3i cho c\u00e2y tr\u1ed3ng, \u0111\u1eb7c bi\u1ec7t c\u00e1c ch\u1ec9 ti\u00eau vi sinh v\u1eadt \u0111\u1ec1u t\u0103ng v\u1edbi c\u1ea5p s\u1ed1 nh\u00e2n. \u0110i\u1ec1u n\u00e0y b\u01b0\u1edbc \u0111\u1ea7u c\u00f3 th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh gi\u1ea3i ph\u00e1p c\u00f4ng ngh\u1ec7 sinh h\u1ecdc m\u00f4i tr\u01b0\u1eddng t\u1ed5ng h\u1ee3p (Bioremediation<\/em>) v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 vi sinh v\u1edbi th\u1ef1c v\u1eadt \u0111\u01b0\u1ee3c xem l\u00e0 bi\u1ec7n ph\u00e1p c\u00f3 hi\u1ec7u qu\u1ea3 b\u1ec1n v\u1eefng \u0111\u1ec3 ph\u1ee5c h\u1ed3i m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i b\u00e3i th\u1ea3i m\u1ecf than.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> N\u1ea5m r\u1ec5 n\u1ed9i c\u1ed9ng sinh, AM, c\u00f4ng ngh\u1ec7 sinh h\u1ecdc m\u00f4i tr\u01b0\u1eddng, ph\u1ee5c h\u1ed3i b\u00e3i th\u1ea3i<\/td>\n<\/tr>\n

\n

<\/a>Preliminary assessment of impacts Bioremediation solutions at Dong Cao S\u01a1n coal mining waste land in Quang Ninh province<\/strong><\/p>\n

Research on growth of acacia hybrid and Acacia auriculiformis<\/em> with fertilizing arbuscular mycorrhiza (AM) 100IP\/g in 5 g\/tree at Dong Cao Son mining waste land (300 m above sea level) in Quang Ninh province showed that after 12 months, the treatments of applying AM had mostly better indexes than the control treatments. The treatments of applying AM had the physicochemical and heavy metal properties have improved in favor of plants, especially the microbiological indicators have increased exponentially. This can initially confirm that the integrated environmental biotechnology solution (Bioremediation) with the combination of using microbiological technology with plants is considered an effective and sustainable measure to restore the biological environment of coal mining waste land.<\/p>\n

Keywords:<\/em><\/strong> Arbuscular mycorrhiza, AM, bioremediation, landfill rehabilitation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>L\u01af\u1ee2NG GI\u00c1 KINH T\u1ebe H\u1ec6 SINH TH\u00c1I R\u1eeaNG NG\u1eacP M\u1eb6N C\u1ea6N GI\u1edc<\/p>\n

<\/a>Tr\u1ea7n Th\u1ecb Thu H\u00e01<\/sup>, Nguy\u1ec5n Thu\u1ef3 M\u1ef9 Linh1<\/sup>, Ph\u1ea1m Ng\u1ecdc Th\u00e0nh1<\/sup>,
\n\u0110o\u00e0n Thanh T\u00f9ng1<\/sup>, Nguy\u1ec5n Ho\u00e0ng Nam2<\/sup><\/p>\n

1 Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2 Vi\u1ec7n Chi\u1ebfn l\u01b0\u1ee3c, Ch\u00ednh s\u00e1ch T\u00e0i nguy\u00ean v\u00e0 M\u00f4i tr\u01b0\u1eddng, B\u1ed9 T\u00e0i nguy\u00ean v\u00e0 M\u00f4i tr\u01b0\u1eddng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u \u201cL\u01b0\u1ee3ng gi\u00e1 kinh t\u1ebf h\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd\u201d do Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng (RIFEE) th\u1ef1c hi\u1ec7n nh\u1eb1m h\u1ed7 tr\u1ee3 Ban qu\u1ea3n l\u00fd R\u1eebng ph\u00f2ng h\u1ed9 C\u1ea7n Gi\u1edd trong vi\u1ec7c nh\u1eadn di\u1ec7n c\u00e1c d\u1ecbch v\u1ee5 h\u1ec7 sinh th\u00e1i \u0111i\u1ec3n h\u00ecnh v\u00e0 quan tr\u1ecdng v\u1ec1 m\u1eb7t kinh t\u1ebf. Nghi\u00ean c\u1ee9u \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p l\u01b0\u1ee3ng gi\u00e1 kh\u00e1c nhau \u0111\u1ec3 l\u01b0\u1ee3ng gi\u00e1 c\u00e1c gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng tr\u1ef1c ti\u1ebfp (g\u1ed7, c\u1ee7i, ngu\u1ed3n l\u1ee3i th\u1ee7y s\u1ea3n, d\u01b0\u1ee3c li\u1ec7u, v.v…), gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng gi\u00e1n ti\u1ebfp (h\u1ea5p th\u1ee5 carbon, \u0111i\u1ec1u ho\u00e0 kh\u00ed h\u1eadu, gi\u1ea3m thi\u1ec3u thi\u1ec7t h\u1ea1i do thi\u00ean tai g\u00e2y ra, v.v) v\u00e0 gi\u00e1 tr\u1ecb phi s\u1eed d\u1ee5ng (gi\u00e1 tr\u1ecb t\u1ed3n t\u1ea1i). K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, t\u1ed5ng gi\u00e1 tr\u1ecb kinh t\u1ebf c\u1ee7a c\u00e1c h\u00e0ng h\u00f3a, d\u1ecbch v\u1ee5 quan tr\u1ecdng c\u1ee7a r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd l\u00ean t\u1edbi 3.881 t\u1ef7 \u0111\u1ed3ng\/n\u0103m, trong \u0111\u00f3 gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng tr\u1ef1c ti\u1ebfp (g\u1ed7, c\u1ee7i, l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7, ngu\u1ed3n l\u1ee3i th\u1ee7y s\u1ea3n, mu\u1ed1i, du l\u1ecbch, v.v…) l\u00ean t\u1edbi 3.422 t\u1ef7 \u0111\u1ed3ng\/n\u0103m (chi\u1ebfm 88,1%), gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng gi\u00e1n ti\u1ebfp (ph\u00f2ng h\u1ed9 ven bi\u1ec3n, h\u1ea5p th\u1ee5 carbon) l\u00e0 454,8 t\u1ef7 \u0111\u1ed3ng\/n\u0103m (chi\u1ebfm 11,7%) v\u00e0 gi\u00e1 tr\u1ecb t\u1ed3n t\u1ea1i l\u00e0 4,3 t\u1ef7 \u0111\u1ed3ng (chi\u1ebfm 0,11%). T\u00ednh trung b\u00ecnh, m\u1ed7i ha r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd c\u00f3 th\u1ec3 cung c\u1ea5p m\u1ed9t l\u01b0\u1ee3ng h\u00e0ng h\u00f3a v\u00e0 d\u1ecbch v\u1ee5 l\u00ean t\u1edbi 111,8 tri\u1ec7u \u0111\u1ed3ng\/n\u0103m t\u1ea1i th\u1eddi \u0111i\u1ec3m nghi\u00ean c\u1ee9u n\u0103m 2020.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> L\u01b0\u1ee3ng gi\u00e1, d\u1ecbch v\u1ee5 h\u1ec7 sinh th\u00e1i, r\u1eebng ng\u1eadp m\u1eb7n, C\u1ea7n Gi\u1edd<\/td>\n<\/tr>\n

\n

<\/a>Economic valuation of Can Gio mangrove ecosystem services<\/strong><\/p>\n

The study \u201cEconomic valuation of Can Gio mangrove ecosystem\u201d was undertaken by the Research Institute for Forest Ecology and Environment (RIFEE) to support the Management Board of Can Gio Mangrove Protection Forest in detecting typical and economically important ecosystem services provided by Can Gio mangrove ecosystems. By using different valuation methods, the study had estimated the direct use values (i.e., timber, firewood, aquatic resources, salt, tourism, etc.), indirect use value (i.e., carbon sequestration, climate regulation, damage avoidance, etc.) and non-use value (i.e., existence value). The study results showed that total economic value of important goods and services provided by Can Gio mangrove ecosystems was up to VND 3,881 billion per year, in which, direct use values (e.g., timber, non-timber forest product, fisheries resources, salt, eco-tourism, etc.) were VND 3,422 billion (accounting for 88.1%), indirect use values (e.g., from carbon sequestration and coastal protection services) were VND 454,8 billion (accounting for 11.7%) and existence value was VND 4.3 billion (accounting for 0.11%). The average economic value of Can Gio mangrove ecosystem was VND 111.8 million per ha per year at the price of 2020.<\/p>\n

Keywords:<\/em><\/strong> Valuation, ecosystem services, mangroves, Can Gio<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 3 – 2022 1. \u0110a d\u1ea1ng h\u1ec7 th\u1ef1c v\u1eadt r\u1eebng t\u1ea1i Khu r\u1eebng \u0111\u1eb7c d\u1ee5ng b\u1ea3o v\u1ec7 c\u1ea3nh quan V\u1ecbnh H\u1ea1 Long, t\u1ec9nh Qu\u1ea3ng Ninh Forest vegetable diverse in the special-use forest protecting the landscape of Ha Long Bay, Quang Ninh province Ho\u00e0ng V\u0103n Th\u1eafng Tr\u1ecbnh Ng\u1ecdc Bon […]<\/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\/2303"}],"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=2303"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2303\/revisions"}],"predecessor-version":[{"id":2387,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2303\/revisions\/2387"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2303"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2303"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}