{"id":9580,"date":"2011-06-07T07:44:12","date_gmt":"2011-06-07T00:44:12","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2011\/06\/danh-gia-sinh-truong-bach-dan-eucalyptus-urophylla-s-t-balake-trong-thuan-loai-tai-lam-truong-cao-loc-lam-co-so-chon-loai-cay-trong-cho-rung-san-xuat-tinh-lang-son\/"},"modified":"2015-05-19T14:22:56","modified_gmt":"2015-05-19T07:22:56","slug":"danh-gia-sinh-truong-bach-dan-eucalyptus-urophylla-s-t-balake-trong-thuan-loai-tai-lam-truong-cao-loc-lam-co-so-chon-loai-cay-trong-cho-rung-san-xuat-tinh-lang-son","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/danh-gia-sinh-truong-bach-dan-eucalyptus-urophylla-s-t-balake-trong-thuan-loai-tai-lam-truong-cao-loc-lam-co-so-chon-loai-cay-trong-cho-rung-san-xuat-tinh-lang-son\/","title":{"rendered":"\u0110\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng B\u1ea1ch \u0111\u00e0n Eucalyptus urophylla S.T Balake tr\u1ed3ng thu\u1ea7n lo\u00e0i t\u1ea1i l\u00e2m tr\u01b0\u1eddng Cao L\u1ed9c, l\u00e0m c\u01a1 s\u1edf ch\u1ecdn lo\u00e0i c\u00e2y tr\u1ed3ng cho r\u1eebng s\u1ea3n xu\u1ea5t t\u1ec9nh L\u1ea1ng S\u01a1n"},"content":{"rendered":"

T\u1ea1 Cao Quy\u1ebft<\/strong><\/p>\n

S\u1edf Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 L\u1ea1ng S\u01a1n<\/em><\/p>\n

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

B\u00e0i vi\u1ebft tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u sinh tr\u01b0\u1edfng b\u1ea1ch \u0111\u00e0n Eucalyptus urophylla S.T.Blake tr\u1ed3ng thu\u1ea7n lo\u00e0i t\u1ea1i L\u00e2m tr\u01b0\u1eddng Cao L\u1ed9c, t\u1ec9nh L\u1ea1ng S\u01a1n, n\u1ed9i dung ch\u1ee7 y\u1ebfu g\u1ed3m: Sinh tr\u01b0\u1edfng v\u00e0 t\u0103ng tr\u01b0\u1edfng c\u1ee7a r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0nEucalyptus urophylla S.T.Blake, \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 kinh t\u1ebf th\u00f4ng qua c\u00e1c ch\u1ec9 ti\u00eau: NPV, BCR v\u00e0 IRR, \u0111\u00e1nh gi\u00e1 s\u01a1 b\u1ed9 hi\u1ec7u qu\u1ea3 sinh th\u00e1i th\u00f4ng qua c\u00e1c ch\u1ec9 ti\u00eau: c\u01b0\u1eddng \u0111\u1ed9 x\u00f3i m\u00f2n, ch\u1ec9 s\u1ed1 \u0111a d\u1ea1ng lo\u00e0i v\u00e0l\u01b0\u1ee3ng x\u00e1c th\u1ef1c v\u1eadt d\u01b0\u1edbi t\u00e1n r\u1eebng, \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 x\u00e3 h\u1ed9i v\u00e0 \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 t\u1ed5ng h\u1ee3p (ECT) c\u1ee7a m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n theo c\u00f4ng th\u1ee9c W.P.Rola. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y tr\u00ean c\u00f9ng m\u1ed9t \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba, c\u00f9ng m\u1ed9t bi\u1ec7n ph\u00e1p t\u00e1c \u0111\u1ed9ng k\u1ef9 thu\u1eadt nh\u01b0ng sinh tr\u01b0\u1edfng D1.3<\/sub> v\u00e0 Hvn c\u1ee7a PN14,U6 v\u00e0 Uro h\u1ea1t n\u01a1i nghi\u00ean c\u1ee9u kh\u00e1c nhau r\u00f5 r\u1ec7t v\u00e0 PN14<\/sub> cho sinh tr\u01b0\u1edfng D1.3<\/sub> v\u00e0 Hvn<\/sub> l\u00e0 t\u1ed1t nh\u1ea5t, U6<\/sub> c\u00f3 sinh tr\u01b0\u1edfng k\u00e9m nh\u1ea5t c\u1ea3 v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao. \u00adT\u0103ng tr\u01b0\u1edfng D1.3<\/sub>, Hvn<\/sub> , V v\u00e0 M cho th\u1ea5y PN14<\/sub> c\u00f3 t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n v\u00e0 t\u0103ng tr\u01b0\u1edfng th\u01b0\u1eddng xuy\u00ean nhanh nh\u1ea5t, \u0111\u1ee9ng th\u1ee9 hai l\u00e0 Uro h\u1ea1t v\u00e0 k\u00e9m nh\u1ea5t l\u00e0 U6<\/sub>. T\u1eeb sinh tr\u01b0\u1edfng v\u00e0 t\u0103ng tr\u01b0\u1edfng r\u1eebng tr\u1ed3ng PN14<\/sub> , U6 v\u00e0 Uro h\u1ea1t v\u00e0 qua t\u00ednh to\u00e1n v\u1ec1 chi ph\u00ed \u0111\u1ea7u t\u01b0, thu nh\u1eadp cho th\u1ea5y r\u1eebng tr\u1ed3ng PN14<\/sub> cho hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao nh\u1ea5t v\u00e0 cho thu nh\u1eadp th\u1ea5p nh\u1ea5t l\u00e0 U6<\/sub>. Hi\u1ec7u qu\u1ea3 sinh th\u00e1i c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa r\u1eebng tr\u1ed3ng PN14<\/sub>, U6 v\u00e0 Uro h\u1ea1t bi\u1ec3u hi\u1ec7n ch\u1ee7 y\u1ebfu l\u00e0 \u0111\u1ed9 t\u00e0n che v\u00e0 chi\u1ec1u cao c\u1ee7a t\u1ea7ng c\u00e2y cao, c\u00e2y b\u1ee5i th\u1ea3m t\u01b0\u01a1i v\u00e0 th\u1ea3m m\u1ee5c d\u01b0\u1edbi t\u00e0n r\u1eebng.<\/p>\n

T\u1eeb kho\u00e1: <\/strong>R\u1eebng tr\u1ed3ng, thu\u1ea7n lo\u00e0i, sinh tr\u01b0\u1edfng, t\u0103ng tr\u01b0\u1edfng, , x\u00f3i m\u00f2n, \u0111a d\u1ea1ng lo\u00e0i, th\u1ea3m m\u1ee5c.<\/p>\n

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

Tr\u1ed3ng r\u1eebng l\u00e0 m\u1ed9t ho\u1ea1t \u0111\u1ed9ng s\u1ea3n xu\u1ea5t quan tr\u1ecdngh\u00e0ng \u0111\u1ea7u c\u1ee7a ng\u00e0nh l\u00e2m nghi\u1ec7p, nh\u1eb1m kh\u00f4i ph\u1ee5c r\u1eebng, t\u00e1i s\u1ea3n xu\u1ea5t m\u1edf r\u1ed9ng t\u00e0i nguy\u00ean r\u1eebng v\u00e0 c\u1ea3i thi\u1ec7n m\u00f4i tr\u01b0\u1eddng.<\/p>\n

T\u1eeb th\u1eadp ni\u00ean 40 c\u1ee7a th\u1ebf k\u1ef7 XX \u0111\u1ebfn nay, r\u1eebng c\u1ee7a n\u01b0\u1edbc ta do nhi\u1ec1u nguy\u00ean nh\u00e2n \u0111\u00e3 suy gi\u1ea3m nghi\u00eam tr\u1ecdng v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng, ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111a d\u1ea1ng sinh h\u1ecdc. Trong nh\u1eefng n\u0103m qua ch\u00fang ta \u0111\u00e3 \u0111\u1ea9y m\u1ea1nh c\u00f4ng t\u00e1c tr\u1ed3ng r\u1eebng th\u00f4ng qua c\u00e1c Ch\u01b0\u01a1ng tr\u00ecnh 327, Ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng m\u1edbi 5 tri\u1ec7u ha r\u1eebng…Tuy nhi\u00ean t\u1eeb n\u0103m 1990 tr\u1edf v\u1ec1 tr\u01b0\u1edbc, m\u1ee5c ti\u00eau tr\u1ed3ng r\u1eebng ch\u1ee7 y\u1ebfu nh\u1eb1m ph\u1ee7 xanh \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc, cung c\u1ea5p g\u1ed7 c\u1ee7i v\u1edbi ph\u01b0\u01a1ng th\u1ee9c ch\u1ee7 y\u1ebfu l\u00e0 tr\u1ed3ng r\u1eebng qu\u1ea3ng canh n\u00ean t\u1ef7 l\u1ec7 th\u00e0nh r\u1eebng th\u1ea5p, n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng th\u01b0\u1eddng ch\u1ec9 \u0111\u1ea1t 7-10 m3<\/sup>\/ha\/n\u0103m. T\u1eeb n\u0103m 2000 \u0111\u1ebfn nay, di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng t\u0103ng nhanh, ch\u1ee7 y\u1ebfu tr\u1ed3ng r\u1eebng t\u1eadp trung nh\u1eb1m cung c\u1ea5p g\u1ed7 nguy\u00ean li\u1ec7u cho c\u00f4ng nghi\u1ec7p gi\u1ea5y s\u1ee3i, v\u00e1n d\u0103m, v\u00e1n x\u1ebb…V\u1edbi ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng r\u1eebng th\u00e2m canh, n\u00ean n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng th\u01b0\u1eddng \u0111\u1ea1t 20 m3<\/sup>\/ha\/n\u0103m (Nguy\u1ec5n Huy S\u01a1n, 2004).<\/p>\n

C\u00e1c lo\u00e0i c\u00e2y m\u1ecdc nhanh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 g\u00e2y tr\u1ed3ng r\u1eebng \u1edf n\u01b0\u1edbc ta, trong \u0111\u00f3 c\u00e2y b\u1ea1ch \u0111\u00e0n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y ch\u1ee7 y\u1ebfu c\u1ee7a L\u00e2m nghi\u1ec7p. B\u1ea1ch \u0111\u00e0n PN14, U6 v\u00e0 b\u1ea1ch \u0111\u00e0n urophylla h\u1ea1t \u0111\u01b0\u1ee3c tr\u1ed3ng l\u1ea7n \u0111\u1ea7u ti\u00ean t\u1ea1i L\u00e2m tr\u01b0\u1eddng Cao L\u1ed9c – t\u1ec9nh L\u1ea1ng S\u01a1n, hi\u1ec7n t\u1ea1i r\u1eebng tr\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c 7 tu\u1ed5i. Tuy nhi\u00ean cho \u0111\u1ebfn nay v\u1eabn ch\u01b0a c\u00f3 c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u n\u00e0o \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng, s\u1ea3n l\u01b0\u1ee3ng, ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng \u0111\u1ec3 l\u00e0m c\u01a1 s\u1edf ch\u1ecdn d\u00f2ng b\u1ea1ch \u0111\u00e0n urophylla c\u00f3 hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao nh\u1ea5t t\u1ea1i t\u1ec9nh L\u1ea1ng S\u01a1n.<\/p>\n

(T\u1ea1p ch\u00ed Khoa h\u1ecdc L\u00e2m nghi\u1ec7p, s\u1ed1 1 n\u0103m 2011, trang 1724-1735)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

\nBài vi\u1ebft trình bày k\u1ebft qu\u1ea3 nghiên c\u1ee9u sinh tr\u01b0\u1edfng b\u1ea1ch \u0111àn Eucalyptus urophylla S.T.Blake tr\u1ed3ng thu\u1ea7n loài t\u1ea1i Lâm tr\u01b0\u1eddng Cao L\u1ed9c, t\u1ec9nh L\u1ea1ng S\u01a1n, n\u1ed9i dung ch\u1ee7 y\u1ebfu g\u1ed3m: Sinh tr\u01b0\u1edfng và t\u0103ng tr\u01b0\u1edfng c\u1ee7a r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111àn  <\/span>Eucalyptus urophylla S.T.Blake, \u0111ánh giá hi\u1ec7u qu\u1ea3 kinh t\u1ebf thông qua các ch\u1ec9 tiêu: NPV, BCR và IRR, \u0111ánh giá s\u01a1 b\u1ed9 hi\u1ec7u qu\u1ea3 sinh thái thông qua các ch\u1ec9 tiêu: c\u01b0\u1eddng \u0111\u1ed9 xói mòn, ch\u1ec9 s\u1ed1 \u0111a d\u1ea1ng loài và  <\/span>l\u01b0\u1ee3ng xác th\u1ef1c v\u1eadt d\u01b0\u1edbi tán r\u1eebng, \u0111ánh giá hi\u1ec7u qu\u1ea3 xã h\u1ed9i và \u0111ánh giá hi\u1ec7u qu\u1ea3 t\u1ed5ng h\u1ee3p (ECT) c\u1ee7a mô hình r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111àn theo công th\u1ee9c W.P.Rola.<\/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\/9580"}],"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=9580"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9580\/revisions"}],"predecessor-version":[{"id":15256,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9580\/revisions\/15256"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}