{"id":8959,"date":"2009-04-20T08:08:47","date_gmt":"2009-04-20T01:08:47","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/04\/dong-thai-cau-truc-cua-rung-tu-nhien-kon-ha-nung\/"},"modified":"2013-10-06T09:00:57","modified_gmt":"2013-10-06T02:00:57","slug":"dong-thai-cau-truc-cua-rung-tu-nhien-kon-ha-nung","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/dong-thai-cau-truc-cua-rung-tu-nhien-kon-ha-nung\/","title":{"rendered":"\u0110\u1ed9ng th\u00e1i c\u1ea5u tr\u00fac c\u1ee7a r\u1eebng t\u1ef1 nhi\u00ean Kon H\u00e0 N\u1eebng"},"content":{"rendered":"

Tr\u1ea7n V<\/strong>\u0103<\/strong>n Con<\/strong> <\/p>\n

Vi\u1ec7n Khoa h\u1ecdc l\u00e2m nghi\u1ec7p Vi\u1ec7t <\/em>Nam<\/em> <\/p>\n

T\u00d3M T\u1eaeT<\/strong> <\/p>\n

B\u00e0i b\u00e1o l\u00e0 k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch b\u01b0\u1edbc \u0111\u1ea7u s\u1ed1 li\u1ec7u theo d\u00f5i t\u1eeb 2004 \u2013 2006 \u1edf c\u00e1c \u00f4 ti\u00eau chu\u1ea9n \u0111\u1ecbnh v\u1ecb \u0111\u1ec3 nghi\u00ean c\u1ee9u c\u1ea5u tr\u00fac t\u1ed5 th\u00e0nh lo\u00e0i, c\u1ea5u tr\u00fac v\u00e0 \u0111\u1ed9ng th\u00e1i r\u1eebng t\u1ef1 nhi\u00ean k\u00edn l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh m\u01b0a \u1ea9m nhi\u1ec7t \u0111\u1edbi t\u1ea1i khu v\u1ef1c Kon H\u00e0 N\u1eebng. C\u1ea5u tr\u00fac t\u1ed5 th\u00e0nh \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng h\u1ec7 s\u1ed1 Shannon-Wiener (H\u2019) v\u00e0 gi\u00e1 tr\u1ecb IV% t\u00ednh b\u1eb1ng m\u1eadt \u0111\u1ed9 v\u00e0 ti\u1ebft di\u1ec7n ngang t\u01b0\u01a1ng \u0111\u1ed1i. Ph\u00e2n b\u1ed1 N\/D \u0111\u01b0\u1ee3c m\u00f4 ph\u1ecfng b\u1eb1ng h\u00e0m Weibull cho th\u1ea5y r\u1eebng c\u00f3 c\u1ea5u tr\u00fac gi\u1ea3m th\u1ec3 hi\u1ec7n l\u1edbp c\u00e2y t\u00e1i sinh r\u1ea5t phong ph\u00fa v\u00e0 \u0111\u01b0\u1ee3c c\u1ea5u th\u00e0nh b\u1eb1ng c\u00e1c lo\u00e0i ch\u1ecbu b\u00f3ng. T\u1ef7 l\u1ec7 ch\u1ebft \u1edf l\u1edbp c\u00e2y t\u00e1i sinh r\u1ea5t cao v\u00e0 gi\u1ea3m xu\u1ed1ng b\u1eb1ng kh\u00f4ng \u1edf c\u00e1c c\u1ea5p k\u00ednh l\u1edbn. S\u1ed1 c\u00e2y t\u00e1i sinh chuy\u1ec3n l\u00ean c\u1ea5p k\u00ednh d1,3>10 l\u1edbn h\u01a1n s\u1ed1 c\u00e2y ch\u1ebft trong c\u00e1c c\u1ea5p k\u00ednh \u0111\u00f3. C\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y c\u00f3 m\u1ed1i t\u01b0\u01a1ng quan r\u1ea5t cao gi\u1eefa t\u1ef7 l\u1ec7 c\u00e2y ch\u1ebft, c\u00e2y chuy\u1ec3n l\u00ean v\u00e0 s\u1ef1 thay \u0111\u1ed5i c\u1ee7a c\u1ea5u tr\u00fac l\u00e2m ph\u1ea7n. D\u1ef1a tr\u00ean c\u00e1c ki\u1ebfn th\u1ee9c \u0111\u1ed9ng th\u00e1i n\u00e0y, m\u1ed9t m\u00f4 h\u00ecnh m\u00f4 ph\u1ecfng h\u1ec7 th\u1ed1ng \u0111\u1ed9ng th\u00e1i c\u1ea5u tr\u00fac N\/D c\u1ee7a r\u1eebng \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m <\/p>\n

T\u1eeb kho\u00e1:<\/strong> R\u1eebng k\u00edn l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh m\u01b0a \u1ea9m nhi\u1ec7t \u0111\u1edbi, \u0111\u1ed9ng th\u00e1i, t\u00e1i sinh t\u1ef1 nhi\u00ean, t\u1ef7 l\u1ec7 ch\u1ebft, t\u1ef7 l\u1ec7 chuy\u1ec3n c\u1ea5p, t\u0103ng tr\u01b0\u1edfng, c\u1ea5u tr\u00fac, Kon H\u00e0 N\u1eebng. <\/p>\n

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

R\u1eebng l\u00e0 m\u1ed9t h\u1ec7 sinh th\u00e1i lu\u00f4n lu\u00f4n v\u1eadn \u0111\u1ed9ng th\u00f4ng qua c\u00e1c qu\u00e1 tr\u00ecnh sinh tr\u01b0\u1edfng, t\u00e1i sinh v\u00e0 di\u1ec5n th\u1ebf r\u1ea5t ph\u1ee9c t\u1ea1p. C\u00e1c h\u1ec7 sinh th\u00e1i r\u1eebng m\u01b0a nhi\u1ec7t \u0111\u1edbi tr\u00ean ph\u1ea1m vi to\u00e0n th\u1ebf gi\u1edbi \u0111ang c\u00f3 xu h\u01b0\u1edbng suy tho\u00e1i nghi\u00eam tr\u1ecdng v\u00e0 c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i v\u00ec m\u1ee5c \u0111\u00edch m\u00f4i tr\u01b0\u1eddng v\u00e0 kinh t\u1ebf \u0111\u1ec3 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng. Tuy nhi\u00ean, ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac v\u00e0 \u0111\u1ed9ng th\u00e1i c\u1ee7a r\u1eebng t\u1ef1 nhi\u00ean v\u1eabn c\u00f2n r\u1ea5t h\u1ea1n ch\u1ebf. Nghi\u00ean c\u1ee9u \u0111\u1ed9ng th\u00e1i c\u1ee7a r\u1eebng t\u1ef1 nhi\u00ean l\u00e0 m\u1ed9t c\u00f4ng vi\u1ec7c r\u1ea5t kh\u00f3 kh\u0103n nh\u01b0ng c\u1ea7n thi\u1ebft \u0111\u1ec3 n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c c\u00e1c qui lu\u1eadt ph\u00e1t tri\u1ec3n c\u1ee7a r\u1eebng \u0111\u1ec3 c\u00f3 c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111i\u1ec1u ch\u1ec9nh h\u1ee3p l\u00fd v\u00e0 k\u1ecbp th\u1eddi trong t\u1eebng giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n c\u1ee7a r\u1eebng. C\u00e1c qu\u00e1 tr\u00ecnh \u0111\u1ed9ng th\u00e1i di\u1ec5n ra trong r\u1eebng c\u00f3 th\u1ec3 chia th\u00e0nh 3 nh\u00f3m qu\u00e1 tr\u00ecnh: (i) t\u0103ng tr\u01b0\u1edfng c\u1ee7a c\u00e2y d\u1eabn \u0111\u1ebfn s\u1ef1 chuy\u1ec3n c\u1ea5p trong t\u1ea7ng c\u00e2y cao; (ii) qu\u00e1 tr\u00ecnh t\u00e1i sinh b\u1ed5 sung; v\u00e0 (iii) qu\u00e1 tr\u00ecnh ch\u1ebft t\u1ef1 nhi\u00ean trong c\u00e1c c\u1ea5p k\u00ednh. Hai qu\u00e1 tr\u00ecnh sau l\u00e0m thay \u0111\u1ed5i t\u1ed5 th\u00e0nh lo\u00e0i v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a l\u00e2m ph\u1ea7n. C\u00f3 r\u1ea5t nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 nghi\u00ean c\u1ee9u \u0111\u1ed9ng th\u00e1i c\u1ee7a r\u1eebng; ngu\u1ed3n s\u1ed1 li\u1ec7u c\u0169ng c\u00f3 th\u1ec3 thu th\u1eadp b\u1eb1ng nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau. Nh\u01b0ng ch\u00ednh x\u00e1c nh\u1ea5t v\u1eabn l\u00e0 t\u1eeb theo d\u00f5i li\u00ean t\u1ee5c s\u1ed1 li\u1ec7u c\u1ee7a c\u00e1c \u00f4 ti\u00eau chu\u1ea9n \u0111\u1ecbnh v\u1ecb. <\/p>\n

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

       Bài báo là k\u1ebft qu\u1ea3 phân tích b<\/span>\u01b0<\/span>\u1edbc <\/span>\u0111<\/span>\u1ea7u s\u1ed1 li\u1ec7u theo dõi t\u1eeb 2004 – 2006 \u1edf các ô tiêu chu\u1ea9n <\/span>\u0111<\/span>\u1ecbnh v\u1ecb <\/span>\u0111<\/span>\u1ec3 nghiên c\u1ee9u c\u1ea5u trúc t\u1ed5 thành loài, c\u1ea5u trúc và <\/span>\u0111<\/span>\u1ed9ng thái r\u1eebng t\u1ef1 nhiên kín lá r\u1ed9ng th<\/span>\u01b0<\/span>\u1eddng xanh m<\/span>\u01b0<\/span>a \u1ea9m nhi\u1ec7t <\/span>\u0111<\/span>\u1edbi t\u1ea1i khu v\u1ef1c Kon Hà N\u1eebng. C\u1ea5u trúc t\u1ed5 thành <\/span>\u0111\u01b0<\/span>\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng h\u1ec7 s\u1ed1 Shannon-Wiener (H’) và giá tr\u1ecb IV% tính b\u1eb1ng m\u1eadt <\/span>\u0111<\/span>\u1ed9 và ti\u1ebft di\u1ec7n ngang t<\/span>\u01b0\u01a1<\/span>ng <\/span>\u0111<\/span>\u1ed1i. Phân b\u1ed1 N\/D <\/span>\u0111\u01b0<\/span>\u1ee3c mô ph\u1ecfng b\u1eb1ng hàm Weibull cho th\u1ea5y r\u1eebng có c\u1ea5u trúc gi\u1ea3m th\u1ec3 hi\u1ec7n l\u1edbp cây tái sinh r\u1ea5t phong phú và <\/span>\u0111\u01b0<\/span>\u1ee3c c\u1ea5u thành b\u1eb1ng các loài ch\u1ecbu bóng. T\u1ef7 l\u1ec7 ch\u1ebft \u1edf l\u1edbp cây tái sinh r\u1ea5t cao và gi\u1ea3m xu\u1ed1ng b\u1eb1ng không \u1edf các c\u1ea5p kính l\u1edbn. S\u1ed1 cây tái sinh chuy\u1ec3n lên c\u1ea5p kính d1,3>10 l\u1edbn h<\/span>\u01a1<\/span>n s\u1ed1 cây ch\u1ebft trong các c\u1ea5p kính <\/span>\u0111<\/span>ó. Các k\u1ebft qu\u1ea3 nghiên c\u1ee9u cho th\u1ea5y có m\u1ed1i t<\/span>\u01b0\u01a1<\/span>ng quan r\u1ea5t cao gi\u1eefa t\u1ef7 l\u1ec7 cây ch\u1ebft, cây chuy\u1ec3n lên và s\u1ef1 thay <\/span>\u0111<\/span>\u1ed5i c\u1ee7a c\u1ea5u trúc lâm ph\u1ea7n. D\u1ef1a trên các ki\u1ebfn th\u1ee9c <\/span>\u0111<\/span>\u1ed9ng thái này, m\u1ed9t mô hình mô ph\u1ecfng h\u1ec7 th\u1ed1ng <\/span>\u0111<\/span>\u1ed9ng thái c\u1ea5u trúc N\/D c\u1ee7a r\u1eebng <\/span>\u0111\u01b0<\/span>\u1ee3c th\u1eed nghi\u1ec7m.<\/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\/8959"}],"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=8959"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8959\/revisions"}],"predecessor-version":[{"id":10415,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8959\/revisions\/10415"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}