{"id":8842,"date":"2009-03-24T04:32:20","date_gmt":"2009-03-23T21:32:20","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/ket-qua-nghien-cuu-phuc-hoi-rung-sau-nuong-ray-o-vuon-quoc-gia-ben-en\/"},"modified":"2019-09-24T10:51:24","modified_gmt":"2019-09-24T03:51:24","slug":"ket-qua-nghien-cuu-phuc-hoi-rung-sau-nuong-ray-o-vuon-quoc-gia-ben-en","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ket-qua-nghien-cuu-phuc-hoi-rung-sau-nuong-ray-o-vuon-quoc-gia-ben-en\/","title":{"rendered":"K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ph\u1ee5c h\u1ed3i r\u1eebng sau n\u01b0\u01a1ng r\u1eaby \u1edf v\u01b0\u1eddn qu\u1ed1c gia B\u1ebfn En"},"content":{"rendered":"
\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ph\u1ee5c h\u1ed3i r\u1eebng sau n\u01b0\u01a1ng r\u1eaby \u1edf v\u01b0\u1eddn qu\u1ed1c gia B\u1ebfn En<\/p>\n

\u0110\u1eb7ng H\u1eefu Ngh\u1ecb<\/strong> <\/em><\/p>\n

V\u01b0\u1eddn Qu\u1ed1c gia B\u1ebfn En <\/em><\/p>\n<\/div>\n

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

\n

V\u01b0\u1eddn qu\u1ed1c gia B\u1ebfn En th\u00e0nh l\u1eadp n\u0103m 1992theo quy\u1ebft \u0111\u1ecbnh c\u1ee7a Ch\u00ednh ph\u1ee7, n\u1eb1m tr\u00ean \u0111\u1ecba b\u00e0n c\u1ee7a huy\u1ec7n Nh\u01b0 Xu\u00e2n v\u00e0 Nh\u01b0 Thanh, t\u1ec9nh Thanh Ho\u00e1, v\u1edbi nhi\u1ec7m v\u1ee5 ch\u00ednh l\u00e0 b\u1ea3o t\u1ed3n h\u1ec7 sinh th\u00e1i r\u1eebng nhi\u1ec7t \u0111\u1edbi \u1ea9m th\u01b0\u1eddng xanh v\u1ea3 n\u1eeda r\u1ee5ng l\u00e1 \u0111ai th\u1ea5p n\u00fai \u0111\u1ea5t v\u00f9ng B\u1eafc Trung b\u1ed9. C\u00f9ng v\u1edbi t\u00ecnh h\u00ecnh chung c\u1ee7a c\u1ea3 n\u01b0\u1edbc, tr\u01b0\u1edbc khi th\u00e0nh l\u1eadp v\u01b0\u1eddn r\u1eebng \u1edf \u0111\u00e2y \u0111\u00e3 b\u1ecb khai th\u00e1c, ch\u1eb7t ph\u00e1 m\u1ea1nh \u1edf nhi\u1ec1u n\u01a1i, n\u00ean \u0111\u1ec3 l\u1ea1i hi\u1ec7n tr\u1ea1ng r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 m\u1ee9c \u0111\u1ed9 suy th\u00e1i kh\u00e1c nhau, ch\u1ee7 y\u1ebfu l\u00e0 r\u1eebng ph\u1ee5c h\u1ed3i sau khai th\u00e1c ki\u1ec7t, sau n\u01b0\u01a1ng r\u1eaby chi\u1ebfm g\u1ea7n 2\/3 di\u1ec7n t\u00edch c\u00f3 r\u1eebng t\u1ef1 nhi\u00ean. T\u1eeb khi c\u00e1c t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c v\u00e0o r\u1eebng \u0111\u01b0\u1ee3c ng\u0103n ch\u1eb7n r\u1eebng \u0111ang d\u1ea7n ph\u1ee5c h\u1ed3i tr\u1edf l\u1ea1i. \u0110\u1ec3 l\u00e0m t\u1ed1t c\u00f4ng t\u00e1c b\u1ea3o t\u1ed3n \u0111a d\u1ea1ng sinh h\u1ecdc v\u00e0 ph\u00e1t tri\u1ec3n v\u1ed1n r\u1eebng nh\u1eefng n\u0103m qua v\u01b0\u1eddn qu\u1ed1c gia B\u1ebfn En \u0111\u00e3 ch\u00fa tr\u1ecdng \u0111\u1ebfn c\u00f4ng t\u00e1c ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean. Song \u0111\u1ec3 ph\u1ee5c h\u1ed3inhanhh\u1ec7 sinh th\u00e1i r\u1eebng c\u00f3 hi\u1ec7u qu\u1ea3 c\u1ea7n ph\u1ea3i \u0111\u1ec1 ra gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh ph\u00f9 h\u1ee3p, tr\u00ean c\u01a1 s\u1edf t\u1eadn d\u1ee5ng t\u1ed1i \u0111a n\u0103ng l\u1ef1c t\u00e1i sinh t\u1ef1 nhi\u00ean c\u1ee7a r\u1eebng g\u1eafn li\u1ec1n v\u1edbi \u0111i\u1ec1u ki\u1ec7n sinh th\u00e1i c\u1ee7a khu v\u1ef1c. B\u00e1o c\u00e1o s\u1ebd n\u00eauk\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u m\u1ed9t c\u00e1ch t\u1ed5ng h\u1ee3p v\u1ec1 di\u1ec5n th\u1ebf c\u1ee7a h\u1ec7 sinh th\u00e1i r\u1eebng sau n\u01b0\u01a1ng r\u1eaby trong giai \u0111o\u1ea1n 1997 \u2014 2003 bao g\u1ed3m bi\u1ebfn \u0111\u1ed5i c\u1ee7a l\u1edbp th\u1ea3m th\u1ef1c v\u1eadt g\u1eafn li\u1ec1n c\u00e1c y\u1ebfu t\u1ed1 sinh th\u00e1i theo th\u1eddi gian.<\/p>\n

1. M\u1ee5c ti\u00eau<\/strong><\/p>\n

\u0110\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i r\u1eebng sau n\u01b0\u01a1ng r\u1eaby qua t\u1eebng giai \u0111o\u1ea1n. X\u00e1c \u0111\u1ecbnh th\u1eddi gian ph\u1ee5c h\u1ed3i r\u1eebng. \u1ea3nh h\u01b0\u1edfng c\u1ee7a th\u1ea3m t\u01b0\u01a1i c\u00e2y b\u1ee5i, \u0111\u1ea5t v\u00e0 vi kh\u00ed h\u1eadu \u0111\u1ebfn kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i r\u1eebng.<\/p>\n

2. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/strong><\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p c\u01a1 b\u1ea3n c\u1ee7a \u0111\u00e8 t\u00e0i l\u00e0 \u0111\u00e1nh gi\u00e1 so s\u00e1nh tr\u00ean nh\u1eefng \u0111i\u1ec1u ki\u1ec7n \u0111\u1ed3ng nh\u1ea5t. S\u1eed d\u1ee5ng \u00f4 ti\u00eau chu\u1ea9n \u0111\u1ecbnh v\u1ecb 10.000 m2<\/sup>, d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra l\u00e2m h\u1ecdc truy\u1ec1n th\u1ed1ng \u0111\u1ec3 \u0111i\u1ec1u tra nghi\u00ean c\u1ee9u l\u1edbp th\u1ea3m th\u1ef1c v\u1eadt. Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra \u0111\u1ea5t, kh\u00ed t\u01b0\u1ee3ng \u0111\u1ec3 \u0111i\u1ec1u tra nghi\u00ean c\u1ee9u \u0111\u1ea5t v\u00e0 vi kh\u00ed h\u1eadu. C\u00e1c \u00f4 \u0111\u1ecbnh v\u1ecb \u0111\u01b0\u1ee3c l\u1eadp \u0111\u1ea1i di\u1ec7n cho n\u01b0\u01a1ng r\u1eaby c\u1ee7a \u0111\u1ed3ng b\u00e0o d\u00e2n t\u1ed9c Th\u00e1i \u0111\u00e3 b\u1ecf hoang ho\u00e1 5 n\u0103m (\u00d41), 3 n\u0103m (\u00d43), 1 n\u0103m (\u00d42) \u0111\u1ea1i di\u1ec7n cho 3 l\u00e2m ph\u1ea7n r\u1eebng ph\u1ee5c h\u1ed3i sau n\u01b0\u01a1ng r\u1eaby.<\/p>\n

3. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u00e0 th\u1ea3o lu\u1eadn<\/strong><\/p>\n

3.1.K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u hi\u1ec7n tr\u1ea1ng r\u1eebng<\/em><\/strong><\/p>\n

Sau 6 n\u0103m hi\u1ec7n tr\u1ea1ng r\u1eebng tr\u00ean c\u00e1c \u00f4 c\u00f3 s\u1ef1 thay \u0111\u1ed5i r\u00f5 r\u1ec7t: \u00d41 t\u1eeb tr\u1ea1ng th\u00e1i IIa (l\u00fac l\u1eadp \u00f4) ch\u1ee7 y\u1ebfu l\u00e0 c\u00e2y ti\u00ean phong \u01b0a s\u00e1ng, r\u1eebng ch\u01b0a \u1ed5n \u0111\u1ecbnh c\u00f3 \u0111\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n Dg< 10cm chuy\u1ec3n l\u00ean tr\u1ea1ng th\u00e1i IIb r\u1eebng non ph\u1ee5c h\u1ed3i c\u00f3 \u0111\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n Dg > 10 cm. \u00d42 r\u1eebng t\u1eeb tr\u1ea1ng th\u00e1i Ib chuy\u1ec3n l\u00ean tr\u1ea1ng th\u00e1i IIa. \u00d43 r\u1eebng t\u1eeb tr\u1ea1ng th\u00e1i Ib chuy\u1ec3n l\u00ean r\u1eebng c\u00f3 tr\u1ea1ng th\u00e1i IIa. C\u00e1c ch\u1ec9 ti\u00eau l\u00e2m h\u1ecdc: \u0111\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n, chi\u1ec1u cao b\u00ecnh qu\u00e2n (Hg), t\u1ed5ng i\u1ebft di\u1ec7n ngang (\u00e5G), t\u1ed5ng tr\u1eef l\u01b0\u1ee3ng (\u00e5M), s\u1ed1 c\u00e2y, s\u1ed1 lo\u00e0i c\u00e2y g\u1ed7\u0111\u1ec1u t\u0103ng l\u00ean \u1edf m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau theo s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a hi\u1ec7n tr\u1ea1ng r\u1eebng, \u0111i\u1ec1u \u0111\u00f3 ch\u1ee9ng t\u1ecf r\u1eebng ph\u1ee5c h\u1ed3i \u0111ang c\u00f3 xu h\u01b0\u1edbng t\u1ed1t l\u00ean v\u00e0 t\u01b0\u01a1ng lai s\u1ebd ti\u1ebfn d\u1ea7n \u0111\u1ebfn tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u c\u1ee7a r\u1eebng t\u1ef1 nhi\u00ean<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

V\u01b0\u1eddn qu\u1ed1c gia B\u1ebfn En thành l\u1eadp n\u0103m 1992 theo quy\u1ebft \u0111\u1ecbnh c\u1ee7a Chính ph\u1ee7, n\u1eb1m trên \u0111\u1ecba bàn c\u1ee7a huy\u1ec7n Nh\u01b0 Xuân và Nh\u01b0 Thanh, t\u1ec9nh Thanh Hoá, v\u1edbi nhi\u1ec7m v\u1ee5 chính là b\u1ea3o t\u1ed3n h\u1ec7 sinh thái r\u1eebng nhi\u1ec7t \u0111\u1edbi \u1ea9m th\u01b0\u1eddng xanh v\u1ea3 n\u1eeda r\u1ee5ng lá \u0111ai th\u1ea5p núi \u0111\u1ea5t vùng B\u1eafc Trung b\u1ed9. Cùng v\u1edbi tình hình chung c\u1ee7a c\u1ea3 n\u01b0\u1edbc, tr\u01b0\u1edbc khi thành l\u1eadp v\u01b0\u1eddn r\u1eebng \u1edf \u0111ây \u0111ã b\u1ecb khai thác, ch\u1eb7t phá m\u1ea1nh \u1edf nhi\u1ec1u n\u01a1i, nên \u0111\u1ec3 l\u1ea1i hi\u1ec7n tr\u1ea1ng r\u1eebng t\u1ef1 nhiên có m\u1ee9c \u0111\u1ed9 suy thái khác nhau, ch\u1ee7 y\u1ebfu là r\u1eebng ph\u1ee5c h\u1ed3i sau khai thác ki\u1ec7t, sau n\u01b0\u01a1ng r\u1eaby chi\u1ebfm g\u1ea7n 2\/3 di\u1ec7n tích có r\u1eebng t\u1ef1 nhiên. T\u1eeb khi các tác \u0111\u1ed9ng tiêu c\u1ef1c vào r\u1eebng \u0111\u01b0\u1ee3c ng\u0103n ch\u1eb7n r\u1eebng \u0111ang d\u1ea7n ph\u1ee5c h\u1ed3i tr\u1edf l\u1ea1i. <\/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\/8842"}],"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=8842"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8842\/revisions"}],"predecessor-version":[{"id":19064,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8842\/revisions\/19064"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8842"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8842"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}