{"id":8961,"date":"2009-04-20T08:09:23","date_gmt":"2009-04-20T01:09:23","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/04\/tai-sinh-cay-ban-dia-duoi-tan-rung-trong-va-tren-dat-trong-tai-xa-nam-lau-tinh-son-la\/"},"modified":"2013-10-06T09:00:57","modified_gmt":"2013-10-06T02:00:57","slug":"tai-sinh-cay-ban-dia-duoi-tan-rung-trong-va-tren-dat-trong-tai-xa-nam-lau-tinh-son-la","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/tai-sinh-cay-ban-dia-duoi-tan-rung-trong-va-tren-dat-trong-tai-xa-nam-lau-tinh-son-la\/","title":{"rendered":"T\u00e1i sinh c\u00e2y b\u1ea3n \u0111\u1ecba d\u01b0\u1edbi t\u00e1n r\u1eebng tr\u1ed3ng v\u00e0 tr\u00ean \u0111\u1ea5t tr\u1ed1ng t\u1ea1i x\u00e3 N\u1eadm L\u1ea7u, T\u1ec9nh S\u01a1n La"},"content":{"rendered":"\n
Tr\u1ea7n V\u0103n \u0110\u00f4, Nguy\u1ec5n B\u00e1 V\u0103n<\/strong> <\/div>\n
Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em> <\/div>\n
T\u00d3M T\u1eaeT<\/strong> <\/div>\n
<\/strong>Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng v\u00e0 \u0111\u1ea5t tr\u1ed1ng t\u1ea1i t\u1ec9nh S\u01a1n La v\u1edbi m\u1ee5c ti\u00eau so s\u00e1nh kh\u1ea3 n\u0103ng t\u00e1i sinh c\u1ee7a c\u00e2y b\u1ea3n \u0111\u1ecba d\u01b0\u1edbi t\u00e1n r\u1eebng tr\u1ed3ng v\u00e0 tr\u00ean \u0111\u1ea5t tr\u1ed1ng, \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 r\u1eebng tr\u1ed3ng t\u1edbi kh\u1ea3 n\u0103ng t\u00e1i sinh c\u00e2y b\u1ea3n \u0111\u1ecba. \u00d4 d\u1ea1ng b\u1ea3n h\u00ecnh tr\u00f2n, k\u00edch th\u01b0\u1edbc 200m2<\/sup> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thu th\u1eadp s\u1ed1 li\u1ec7u v\u1ec1 lo\u00e0i v\u00e0 m\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh. M\u1ed9t s\u1ed1 ch\u1ec9 ti\u00eau \u0111a d\u1ea1ng sinh h\u1ecdc \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 \u0111a d\u1ea1ng sinh h\u1ecdc lo\u00e0i trong r\u1eebng tr\u1ed3ng v\u00e0 tr\u00ean \u0111\u1ea5t tr\u1ed1ng. T\u1ed5ng s\u1ed1 c\u00f3 22 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba t\u00e1i sinh d\u01b0\u1edbi t\u00e1n r\u1eebng tr\u1ed3ng lo\u00e0i Keo l\u00e1 tr\u00e0m v\u1edbi m\u1eadt \u0111\u1ed9 \u0111\u1ea1t 860c\u00e2y\/ha. T\u00e1i sinh t\u1ed1t nh\u1ea5t \u1edf m\u1eadt \u0111\u1ed9 r\u1eebng tr\u1ed3ng l\u00e0 1.660c\u00e2y\/ha. S\u1ed1 lo\u00e0i b\u1ea3n \u0111\u1ecba t\u00e1i sinh th\u1ea5p nh\u1ea5t d\u01b0\u1edbi t\u00e1n r\u1eebng tr\u1ed3ng B\u1ea1ch \u0111\u00e0n v\u1edbi 12 lo\u00e0i xu\u1ea5t hi\u1ec7n v\u00e0 m\u1eadt \u0111\u1ed9 \u0111\u1ea1t 467c\u00e2y\/ha. <\/div>\n
T\u1eeb kh\u00f3a:<\/strong> C\u00e2y b\u1ea3n \u0111\u1ecba t\u00e1i sinh, r\u1eebng tr\u1ed3ng Keo l\u00e1 tr\u00e0m, r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng, r\u1eebng tr\u1ed3ng B\u1ea1ch \u0111\u00e0n, \u0111\u1ea5t tr\u1ed1ng. <\/div>\n

M\u1ede \u0110\u1ea6U<\/strong> <\/p>\n

\n

R\u1eebng t\u1ef1 nhi\u00ean Vi\u1ec7t Nam b\u1ecb gi\u1ea3m \u0111i nhanh ch\u00f3ng trong nh\u1eefng n\u0103m qua do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau nh\u01b0: canh t\u00e1c n\u01b0\u01a1ng d\u1eaby, ch\u0103n th\u1ea3 gia s\u00fac, ch\u1eb7t tr\u1ed9m (WCMC, 1994). T\u00ednh \u0111\u1ebfn n\u0103m 2000, \u0111\u1ed9 che ph\u1ee7 r\u1eebng ch\u1ec9 \u0111\u1ea1t 32%. Trong t\u1ed5ng s\u1ed1 g\u1ea7n 4 tri\u1ec7u ha \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc th\u00ec v\u00f9ng T\u00e2y B\u1eafc chi\u1ebfm g\u1ea7n 50%, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 2 tri\u1ec7u ha. S\u1ed1 lo\u00e0i c\u00e2y r\u1eebng xu\u1ea5t hi\u1ec7n tr\u00ean \u0111\u1ea5t tr\u1ed1ng th\u1ea5p, ch\u1ee7 y\u1ebfu l\u00e0 c\u00e1c lo\u00e0i ti\u00ean phong, \u00edt c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf. \u0110\u1ea5t \u0111ai ngh\u00e8o, x\u1ea5u do \u0111\u00e3 b\u1ecb x\u00f3i m\u00f2n v\u00e0 r\u1eeda tr\u00f4i. <\/p>\n<\/p><\/div>\n

T\u1ea1i v\u00f9ng T\u00e2y B\u1eafc n\u00f3i chung v\u00e0 S\u01a1n La n\u00f3i ri\u00eang, \u0111\u00e3 c\u00f3 nhi\u1ec1u lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng tr\u00ean v\u00f9ng \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc, tuy nhi\u00ean t\u1ef7 l\u1ec7 s\u1ed1ng th\u1ea5p, sinh tr\u01b0\u1edfng ch\u1eadm. Nguy\u00ean nh\u00e2n ch\u00ednh l\u00e0 do \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t c\u1ee7a th\u1eddi ti\u1ebft, \u0111\u1ea5t x\u1ea5u. Ch\u00ednh v\u00ec nh\u1eefng nguy\u00ean nh\u00e2n \u0111\u00f3, vi\u1ec7c ph\u1ee5c h\u1ed3i r\u1eebng tr\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc b\u1eb1ng tr\u1ed3ng r\u1eebng tr\u1ef1c ti\u1ebfp c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba g\u1eb7p r\u1ea5t nhi\u1ec1u kh\u00f3 kh\u0103n. \u0110\u1ec3 ph\u1ee5c h\u1ed3i r\u1eebng tr\u00ean \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc th\u00e0nh c\u00f4ng th\u00ec vi\u1ec7c c\u1ea3i thi\u1ec7n c\u00e1c \u0111i\u1ec1u ki\u1ec7n ti\u1ec3u kh\u00ed h\u1eadu c\u0169ng nh\u01b0 \u0111\u1ed9 ph\u00ec \u0111\u1ea5t cho ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u00e2y b\u1ea3n \u0111\u1ecba b\u1eb1ng vi\u1ec7c g\u00e2y tr\u1ed3ng c\u00e1c lo\u00e0i Keo \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh. <\/p>\n

C\u1eadp nh\u1eadt t\u1ea1i \u0111\u00e2y<\/a><\/u><\/strong> <\/p>\n","protected":false},"excerpt":{"rendered":"

       Nghiên c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn hành trên \u0111\u1ed1i t\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng và \u0111\u1ea5t tr\u1ed1ng t\u1ea1i t\u1ec9nh S\u01a1n La v\u1edbi m\u1ee5c tiêu so sánh kh\u1ea3 n\u0103ng tái sinh c\u1ee7a cây b\u1ea3n \u0111\u1ecba d\u01b0\u1edbi tán r\u1eebng tr\u1ed3ng và trên \u0111\u1ea5t tr\u1ed1ng, \u0111ánh giá \u1ea3nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 r\u1eebng tr\u1ed3ng t\u1edbi kh\u1ea3 n\u0103ng tái sinh cây b\u1ea3n \u0111\u1ecba. Ô d\u1ea1ng b\u1ea3n hình tròn, kích th\u01b0\u1edbc 200m2<\/sup> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thu th\u1eadp s\u1ed1 li\u1ec7u v\u1ec1 loài và m\u1eadt \u0111\u1ed9 cây tái sinh. M\u1ed9t s\u1ed1 ch\u1ec9 tiêu \u0111a d\u1ea1ng sinh h\u1ecdc \u0111\u01b0\u1ee3c áp d\u1ee5ng \u0111\u1ec3 \u0111ánh giá m\u1ee9c \u0111\u1ed9 \u0111a d\u1ea1ng sinh h\u1ecdc loài trong r\u1eebng tr\u1ed3ng và trên \u0111\u1ea5t tr\u1ed1ng. T\u1ed5ng s\u1ed1 có 22 loài cây b\u1ea3n \u0111\u1ecba tái sinh d\u01b0\u1edbi tán r\u1eebng tr\u1ed3ng loài Keo lá tràm v\u1edbi m\u1eadt \u0111\u1ed9 \u0111\u1ea1t 860cây\/ha. Tái sinh t\u1ed1t nh\u1ea5t \u1edf m\u1eadt \u0111\u1ed9 r\u1eebng tr\u1ed3ng là 1.660cây\/ha. S\u1ed1 loài b\u1ea3n \u0111\u1ecba tái sinh th\u1ea5p nh\u1ea5t d\u01b0\u1edbi tán r\u1eebng tr\u1ed3ng B\u1ea1ch \u0111àn v\u1edbi 12 loài xu\u1ea5t hi\u1ec7n và m\u1eadt \u0111\u1ed9 \u0111\u1ea1t 467cây\/ha.<\/span> <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8961"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=8961"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8961\/revisions"}],"predecessor-version":[{"id":10417,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8961\/revisions\/10417"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8961"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8961"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}