{"id":9082,"date":"2009-04-20T08:32:24","date_gmt":"2009-04-20T01:32:24","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/04\/dac-diem-cua-mot-so-mo-hinh-rung-trong-luong-o-cac-tinh-phia-bac\/"},"modified":"2013-10-06T09:01:18","modified_gmt":"2013-10-06T02:01:18","slug":"dac-diem-cua-mot-so-mo-hinh-rung-trong-luong-o-cac-tinh-phia-bac","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/dac-diem-cua-mot-so-mo-hinh-rung-trong-luong-o-cac-tinh-phia-bac\/","title":{"rendered":"\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a m\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng Lu\u1ed3ng \u1edf c\u00e1c t\u1ec9nh ph\u00eda B\u1eafc"},"content":{"rendered":"\n

Ho\u00e0ng V\u0103n Th\u1eafng<\/strong> <\/p>\n

Ph\u00f2ng Nghi\u00ean c\u1ee9u K\u1ef9 thu\u1eadt L\u00e2m sinh<\/em> <\/p>\n

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

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

K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra m\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng Lu\u1ed3ng \u1edf c\u00e1c t\u1ec9nh Thanh Ho\u00e1, Ho\u00e0 B\u00ecnh v\u00e0 Ph\u00fa Th\u1ecd cho th\u1ea5y h\u1ea7u h\u1ebft c\u00e1c r\u1eebng Lu\u1ed3ng hi\u1ec7n c\u00f3 l\u00e0 r\u1eebng tr\u1ed3ng thu\u1ea7n lo\u00e0i. Ngo\u00e0i ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng thu\u1ea7n lo\u00e0i, Lu\u1ed3ng c\u00f2n \u0111\u01b0\u1ee3c tr\u1ed3ng h\u1ed7n lo\u00e0i v\u1edbi c\u00e1c lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng b\u1ea3n \u0111\u1ecba. Tuy nhi\u00ean, trong h\u1ea7u h\u1ebft c\u00e1c m\u00f4 h\u00ecnh h\u1ed7n lo\u00e0i n\u00e0y c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng Lu\u1ed3ng sau 10-12 n\u0103m kinh doanh. Nh\u00ecn chung, c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng trong c\u00e1c m\u00f4 h\u00ecnh r\u1eebng Lu\u1ed3ng \u0111\u1ec1u c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng cao v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng t\u1ed1t. Sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c c\u1ee7a Lu\u1ed3ng dao \u0111\u1ed9ng trong kho\u1ea3ng 4,9 – 8,4cm v\u00e0 chi\u1ec1u cao \u0111\u1ea1t t\u1eeb 10,2 – 14,2m. So v\u1edbi c\u00e1c ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng kh\u00e1c, c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba tr\u1ed3ng h\u1ed7n lo\u00e0i v\u1edbi Lu\u1ed3ng \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng t\u1ed1t. V\u1ec1 t\u00ecnh h\u00ecnh s\u00e2u b\u1ec7nh h\u1ea1i cho th\u1ea5y r\u1eebng tr\u1ed3ng Lu\u1ed3ng th\u01b0\u1eddng m\u1eafc c\u00e1c lo\u1ea1i s\u00e2u b\u1ec7nh h\u1ea1i l\u00e0 b\u1ec7nh Ch\u1ed5i x\u1ec3, s\u00e2u V\u00f2i voi v\u00e0 b\u1ec7nh S\u1ecdc t\u00edm. T\u1ef7 l\u1ec7\u1ed1\u00e2 Lu\u1ed3ng b\u1ecb s\u00e2u b\u1ec7nh h\u1ea1i \u1edf r\u1eebng tr\u1ed3ng thu\u1ea7n lo\u00e0i dao \u0111\u1ed9ng t\u1eeb 12,2 – 52,6%, trong khi \u0111\u00f3 \u1edf r\u1eebng tr\u1ed3ng h\u1ed7n lo\u00e0i v\u1edbi c\u00e2y l\u00e1 r\u1ed9ng b\u1ea3n \u0111\u1ecba t\u1ef7 l\u1ec7 n\u00e0y dao \u0111\u1ed9ng t\u1eeb 3,5 – 26,4%. R\u1eebng tr\u1ed3ng Lu\u1ed3ng thu\u1ea7n lo\u00e0i kinh doanh trong th\u1eddi gian d\u00e0i th\u01b0\u1eddng l\u00e0m gi\u1ea3m \u0111\u1ed9 ph\u00ec c\u1ee7a \u0111\u1ea5t. Khi tr\u1ed3ng h\u1ed7n lo\u00e0i v\u1edbi c\u00e1c lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng b\u1ea3n \u0111\u1ecba th\u00ec r\u1eebng tr\u1ed3ng h\u1ea1n ch\u1ebf t\u1ed1t h\u01a1n m\u1ee9c \u0111\u1ed9 l\u00e0m gi\u1ea3m \u0111\u1ed9 ph\u00ec \u0111\u1ea5t. Trong c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng Lu\u1ed3ng c\u00f3 th\u1eddi gian kinh doanh ng\u1eafn, c\u00e1c t\u00ednh ch\u1ea5t v\u1ec1 \u0111\u1ed9 ph\u00ec c\u1ee7a \u0111\u1ea5t ch\u01b0a th\u1ec3 hi\u1ec7n r\u00f5 quy lu\u1eadt. <\/p>\n

T\u1eeb kh\u00f3a:<\/strong>R\u1eebng tr\u1ed3ng Lu\u1ed3ng, sinh tr\u01b0\u1edfng, s\u00e2u b\u1ec7nh, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ea5t \u0111ai. <\/p>\n

\u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/strong> <\/p>\n

Lu\u1ed3ng l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao. Sau 5-6 n\u0103m, tr\u1ed3ng r\u1eebng Lu\u1ed3ng b\u1eaft \u0111\u1ea7u cho khai th\u00e1c. L\u00e0 lo\u00e0i c\u00e2y d\u1ec5 tr\u1ed3ng, m\u1ee9c \u0111\u1ea7u t\u01b0 th\u1ea5p, h\u01a1n n\u1eefa khi cho khai th\u00e1c l\u1ea1i \u0111\u01b0\u1ee3c khai th\u00e1c h\u00e0ng n\u0103m n\u00ean \u00e2Lu\u1ed3ng \u0111\u00e3 mang l\u1ea1i thu nh\u1eadp th\u01b0\u1eddng xuy\u00ean, \u0111\u1ea3m b\u1ea3o l\u1ea5y ng\u1eafn nu\u00f4i d\u00e0i cho ng\u01b0\u1eddi d\u00e2n l\u00e0m ngh\u1ec1 r\u1eebng. Ngo\u00e0i ra, r\u1eebng tr\u1ed3ng Lu\u1ed3ng c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng ph\u00f2ng h\u1ed9 t\u1ed1t. V\u00ec v\u1eady, hi\u1ec7n nay \u00e2Lu\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00e2n \u1edf nhi\u1ec1u \u0111\u1ecba ph\u01b0\u01a1ng ch\u1ecdn l\u00e0m c\u00e2y tr\u1ed3ng r\u1eebng ch\u00ednh. \u0110\u1ebfn nay, \u00e2Lu\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng \u1edf nhi\u1ec1u t\u1ec9nh trong c\u1ea3 n\u01b0\u1edbc, trong \u0111\u00f3 \u0111\u01b0\u1ee3c tr\u1ed3ng nhi\u1ec1u \u1edf c\u00e1c t\u1ec9nh Thanh Ho\u00e1, Ph\u00fa Th\u1ecd v\u00e0 Ho\u00e0 B\u00ecnh. Tuy \u0111\u00e3 \u0111\u01b0\u1ee3c tr\u1ed3ng tr\u00ean di\u1ec7n t\u00edch l\u1edbn nh\u01b0ng vi\u1ec7c t\u1ed5ng k\u1ebft \u0111\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng Lu\u1ed3ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng h\u1ed7n lo\u00e0i Lu\u1ed3ng v\u1edbi c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba \u0111\u1ec3 c\u00f3 bi\u1ec7n ph\u00e1p l\u00e2m sinh t\u00e1c \u0111\u1ed9ng ph\u00f9 h\u1ee3p v\u1eabn c\u00f2n nhi\u1ec1u h\u1ea1n ch\u1ebf. V\u00ec v\u1eady, \u0111\u1ec3 Lu\u1ed3ng th\u1ef1c s\u1ef1 mang l\u1ea1i hi\u1ec7u qu\u1ea3 th\u00ec vi\u1ec7c t\u1ed5ng k\u1ebft \u0111\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng Lu\u1ed3ng \u0111\u00e3 c\u00f3 \u1edf m\u1ed9t s\u1ed1 \u0111\u1ecba ph\u01b0\u01a1ng \u0111\u1ec3 t\u1eeb \u0111\u00f3 \u0111\u1ec1 xu\u1ea5t c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng Lu\u1ed3ng cho n\u0103ng su\u1ea5t cao v\u00e0 b\u1ec1n v\u1eefng l\u00e0 r\u1ea5t quan tr\u1ecdng. <\/p>\n

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

\n \n<\/p>\n

\nK\u1ebft qu\u1ea3 \u0111i\u1ec1u tra m\u1ed9t s\u1ed1 mô hình r\u1eebng tr\u1ed3ng Lu\u1ed3ng \u1edf các t\u1ec9nh Thanh Hoá, Hoà Bình và Phú Th\u1ecd cho th\u1ea5y h\u1ea7u h\u1ebft các r\u1eebng Lu\u1ed3ng hi\u1ec7n có là r\u1eebng tr\u1ed3ng thu\u1ea7n loài. Ngoài ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng thu\u1ea7n loài, Lu\u1ed3ng còn \u0111\u01b0\u1ee3c tr\u1ed3ng h\u1ed7n loài v\u1edbi các loài cây lá r\u1ed9ng b\u1ea3n \u0111\u1ecba. Tuy nhiên, trong h\u1ea7u h\u1ebft các mô hình h\u1ed7n loài này các loài cây b\u1ea3n \u0111\u1ecba th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u01b0a vào tr\u1ed3ng d\u01b0\u1edbi tán r\u1eebng Lu\u1ed3ng sau 10-12 n\u0103m kinh doanh. Nhìn chung, các loài cây tr\u1ed3ng trong các mô hình r\u1eebng Lu\u1ed3ng \u0111\u1ec1u có t\u1ef7 l\u1ec7 s\u1ed1ng cao và có kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng t\u1ed1t. Sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng kính ngang ng\u1ef1c c\u1ee7a Lu\u1ed3ng dao \u0111\u1ed9ng trong kho\u1ea3ng 4,9 – 8,4cm và chi\u1ec1u cao \u0111\u1ea1t t\u1eeb 10,2 – 14,2m. So v\u1edbi các ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng khác, các loài cây b\u1ea3n \u0111\u1ecba tr\u1ed3ng h\u1ed7n loài v\u1edbi Lu\u1ed3ng \u0111\u1ec1u có kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng t\u1ed1t. V\u1ec1 tình hình sâu b\u1ec7nh h\u1ea1i cho th\u1ea5y r\u1eebng tr\u1ed3ng Lu\u1ed3ng th\u01b0\u1eddng m\u1eafc các lo\u1ea1i sâu b\u1ec7nh h\u1ea1i là b\u1ec7nh Ch\u1ed5i x\u1ec3, sâu Vòi voi và b\u1ec7nh S\u1ecdc tím. T\u1ef7 l\u1ec7\u1ed1â Lu\u1ed3ng b\u1ecb sâu b\u1ec7nh h\u1ea1i \u1edf r\u1eebng tr\u1ed3ng thu\u1ea7n loài dao \u0111\u1ed9ng t\u1eeb 12,2 – 52,6%, trong khi \u0111ó \u1edf r\u1eebng tr\u1ed3ng h\u1ed7n loài v\u1edbi cây lá r\u1ed9ng b\u1ea3n \u0111\u1ecba t\u1ef7 l\u1ec7 này dao \u0111\u1ed9ng t\u1eeb 3,5 – 26,4%. R\u1eebng tr\u1ed3ng Lu\u1ed3ng thu\u1ea7n loài kinh doanh trong th\u1eddi gian dài th\u01b0\u1eddng làm gi\u1ea3m \u0111\u1ed9 phì c\u1ee7a \u0111\u1ea5t. Khi tr\u1ed3ng h\u1ed7n loài v\u1edbi các loài cây lá r\u1ed9ng b\u1ea3n \u0111\u1ecba thì r\u1eebng tr\u1ed3ng h\u1ea1n ch\u1ebf t\u1ed1t h\u01a1n m\u1ee9c \u0111\u1ed9 làm gi\u1ea3m \u0111\u1ed9 phì \u0111\u1ea5t. Trong các mô hình r\u1eebng tr\u1ed3ng Lu\u1ed3ng có th\u1eddi gian kinh doanh ng\u1eafn, các tính ch\u1ea5t v\u1ec1 \u0111\u1ed9 phì c\u1ee7a \u0111\u1ea5t ch\u01b0a th\u1ec3 hi\u1ec7n rõ quy lu\u1eadt.<\/font><\/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\/9082"}],"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=9082"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9082\/revisions"}],"predecessor-version":[{"id":10536,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9082\/revisions\/10536"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9082"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9082"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}