{"id":9686,"date":"2011-12-09T04:04:19","date_gmt":"2011-12-08T21:04:19","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2011\/12\/dac-diem-lam-hoc-quan-the-va-kha-nang-tai-sinh-cua-cay-re-gung-o-vuon-quoc-gia-xuan-son-phu-tho\/"},"modified":"2015-05-19T14:16:54","modified_gmt":"2015-05-19T07:16:54","slug":"dac-diem-lam-hoc-quan-the-va-kha-nang-tai-sinh-cua-cay-re-gung-o-vuon-quoc-gia-xuan-son-phu-tho","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/dac-diem-lam-hoc-quan-the-va-kha-nang-tai-sinh-cua-cay-re-gung-o-vuon-quoc-gia-xuan-son-phu-tho\/","title":{"rendered":"\u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc qu\u1ea7n th\u1ec3 v\u00e0 kh\u1ea3 n\u0103ng t\u00e1i sinh c\u1ee7a c\u00e2y Re g\u1eebng \u1edf v\u01b0\u1eddn qu\u1ed1c gia Xu\u00e2n S\u01a1n – Ph\u00fa Th\u1ecd"},"content":{"rendered":"

Nguy\u1ec5n V\u0103n Ti\u1ebfn<\/strong><\/p>\n

C\u1ee5c Ki\u1ec3m l\u00e2m <\/em><\/p>\n

Nguy\u1ec5n Huy S\u01a1n <\/strong><\/p>\n

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

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

Re g\u1eebng (Cinnamomum obtusifolium<\/em>) l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn, l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh. T\u1ed5 th\u00e0nh lo\u00e0i t\u1ea7ng c\u00e2y cao c\u1ee7a tr\u1ea1ng th\u00e1i r\u1eebng IIb \u1edf V\u01b0\u1eddn Qu\u1ed1c gia Xu\u00e2n S\u01a1n (Ph\u00fa Th\u1ecd) c\u00f3 21-25 lo\u00e0i, trong \u0111\u00f3 c\u00f3 4-6 lo\u00e0i \u01b0u th\u1ebf, g\u1ed3m Re g\u1eebng (Cinnamomum obtusifolium<\/em>), D\u1ebb gai Ph\u00fa Th\u1ecd (Castanopsis phuthoensis<\/em>), Kh\u00e1o (Cinnadenia paniculata<\/em>), Tr\u00e2m tr\u1eafng (Syzygium wightianum<\/em>), S\u00e2ng (Pometia pinnata<\/em>), Ch\u1eb9o (Engelhardtia chrysolepis<\/em>)… v\u1edbi tr\u1ecb s\u1ed1 IV% bi\u1ebfn \u0111\u1ed9ng t\u1eeb 8,48-21,97%. M\u1eadt \u0111\u1ed9 to\u00e0n l\u00e2m ph\u1ea7n c\u00f3 340-390 c\u00e2y\/ha. Trong \u0111\u00f3, Re g\u1eebng c\u00f3 60-75 c\u00e2y\/ha. T\u1ed5 th\u00e0nh lo\u00e0i c\u1ee7a l\u1edbp c\u00e2y t\u00e1i sinh d\u01b0\u1edbi t\u00e1n r\u1eebng c\u0169ng c\u00f3 t\u1eeb 21-22 lo\u00e0i, m\u1eadt \u0111\u1ed9 14.080-15.360 c\u00e2y\/ha. Trong \u0111\u00f3, Re g\u1eebng c\u00f3 m\u1eadt \u0111\u1ed9 t\u00e1i sinh 1.040-2.640 c\u00e2y\/ha, c\u00e2y t\u00e1i sinh c\u00f3 tri\u1ec3n v\u1ecdng c\u0169ng \u0111\u1ea1t 640-880 c\u00e2y\/ha. \u0110\u1ed3ng th\u1eddi Re g\u1eebng c\u0169ng l\u00e0 1 trong 4 lo\u00e0i c\u00e2y t\u00e1i sinh c\u00f3 ch\u1ec9 s\u1ed1 IV cao nh\u1ea5t g\u1ed3m Re g\u1eebng, D\u1ebb gai Ph\u00fa Th\u1ecd, Kh\u00e1o, Tr\u00e2m tr\u1eafng. S\u1ed1 l\u01b0\u1ee3ng c\u00e2y t\u00e1i sinh c\u1ee7a Re g\u1eebng cao nh\u1ea5t \u1edf \u0111\u1ed9 t\u00e0n che t\u1eeb 0,25-0,30, ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 t\u00e0n che t\u1eeb 0,40-0,45, th\u1ea5p nh\u1ea5t \u1edf \u0111\u1ed9 t\u00e0n che \u22650,65. S\u1ed1 l\u01b0\u1ee3ng c\u00e2y t\u00e1i sinh c\u00f3 tri\u1ec3n v\u1ecdng c\u0169ng gi\u1ea3m d\u1ea7n t\u1eeb \u0111\u1ed9 t\u00e0n che th\u1ea5p \u0111\u1ebfn \u0111\u1ed9 t\u00e0n che cao (0,25-0,30; 0,40-0,45 v\u00e0 \u22650,65).<\/p>\n

T\u1eeb kh\u00f3a<\/strong>: Re g\u1eebng (Cinnamomum obtusifolium<\/em>), c\u1ea5u tr\u00fac t\u1ed5 th\u00e0nh lo\u00e0i,t\u00e1i sinh t\u1ef1 nhi\u00ean.<\/p>\n

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

Re g\u1eebng (Cinnamomum obtusifolium<\/em> A. Chev) l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn, l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh, c\u00f3 gi\u00e1 tr\u1ecb c\u1ea3 v\u1ec1 kinh t\u1ebf, x\u00e3 h\u1ed9i v\u00e0 m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i, c\u00f3 ph\u00e2n b\u1ed1 kh\u00e1 r\u1ed9ng \u1edf c\u00e1c n\u01b0\u1edbc khu v\u1ef1c \u0110\u00f4ng Nam \u00c1 nh\u01b0 Vi\u1ec7t Nam, L\u00e0o v\u00e0 Campuchia. \u1ede n\u01b0\u1edbc ta, Re g\u1eebng c\u00f3 ph\u00e2n b\u1ed1 trong c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh t\u1eeb Cao B\u1eb1ng, L\u1ea1ng S\u01a1n, Ph\u00fa Th\u1ecd \u0111\u1ebfn T\u00e2y Nguy\u00ean v\u00e0 \u0110\u1ed3ng Nai, th\u01b0\u1eddng th\u1ea5y ph\u00e2n b\u1ed1 \u1edf \u0111\u1ed9 cao d\u01b0\u1edbi 800m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n (Forest Inventory and Planning Institute, 2009). Re g\u1eebng l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u00ednh \u1edf n\u01b0\u1edbc ta trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, \u0111\u1eb7c bi\u1ec7t trong \u0111i\u1ec1u ki\u1ec7n bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu to\u00e0n c\u1ea7u hi\u1ec7n nay.<\/p>\n

Tuy nhi\u00ean, trong th\u1ef1c t\u1ebf tr\u1ed3ng r\u1eebng lo\u00e0i c\u00e2y n\u00e0y \u1edf nhi\u1ec1u \u0111\u1ecba ph\u01b0\u01a1ng tr\u01b0\u1edbc \u0111\u00e2y ch\u01b0a m\u1ea5y th\u00e0nh c\u00f4ng, c\u00f3 th\u1ec3 l\u00e0 do thi\u1ebfu hi\u1ec3u bi\u1ebft c\u01a1 b\u1ea3n v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh v\u1eadt h\u1ecdc c\u0169ng nh\u01b0 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc qu\u1ea7n th\u1ec3. V\u00ec v\u1eady, vi\u1ec7c nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc qu\u1ea7n th\u1ec3 v\u00e0 kh\u1ea3 n\u0103ng t\u00e1i sinh c\u1ee7a lo\u00e0i c\u00e2y Re g\u1eebng l\u00e0 c\u1ea7n thi\u1ebft, \u0111\u1eb7c bi\u1ec7t l\u00e0 t\u1ed5 th\u00e0nh c\u00e1c lo\u00e0i c\u00e2y trong qu\u1ea7n th\u1ec3 t\u1ef1 nhi\u00ean, k\u1ec3 c\u1ea3 c\u1ea5u tr\u00fac t\u1ed5 th\u00e0nh c\u1ee7a t\u1ea7ng c\u00e2y cao v\u00e0 l\u1edbp c\u00e2y t\u00e1i sinh l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1ec1 xu\u1ea5t bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh ph\u00f9 h\u1ee3p nh\u1eb1m ph\u00e1t tri\u1ec3n lo\u00e0i c\u00e2y n\u00e0y \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc.<\/p>\n","protected":false},"excerpt":{"rendered":"

\nRe g\u1eebng (Cinnamomum obtusifolium<\/em> A. Chev) là loài cây g\u1ed7 l\u1edbn, lá r\u1ed9ng th\u01b0\u1eddng xanh, có giá tr\u1ecb c\u1ea3 v\u1ec1 kinh t\u1ebf, xã h\u1ed9i và môi tr\u01b0\u1eddng sinh thái, có phân b\u1ed1 khá r\u1ed9ng \u1edf các n\u01b0\u1edbc khu v\u1ef1c \u0110ông Nam Á nh\u01b0 Vi\u1ec7t Nam, Lào và Campuchia. \u1ede n\u01b0\u1edbc ta, Re g\u1eebng có phân b\u1ed1 trong các tr\u1ea1ng thái r\u1eebng lá r\u1ed9ng th\u01b0\u1eddng xanh t\u1eeb Cao B\u1eb1ng, L\u1ea1ng S\u01a1n, Phú Th\u1ecd \u0111\u1ebfn Tây Nguyên và \u0110\u1ed3ng Nai, th\u01b0\u1eddng th\u1ea5y phân b\u1ed1 \u1edf \u0111\u1ed9 cao d\u01b0\u1edbi 800m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n (Forest Inventory and Planning Institute, 2009). Re g\u1eebng là m\u1ed9t trong nh\u1eefng loài cây tr\u1ed3ng r\u1eebng chính \u1edf n\u01b0\u1edbc ta trong nh\u1eefng n\u0103m g\u1ea7n \u0111ây, \u0111\u1eb7c bi\u1ec7t trong \u0111i\u1ec1u ki\u1ec7n bi\u1ebfn \u0111\u1ed5i khí h\u1eadu toàn c\u1ea7u hi\u1ec7n nay.<\/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\/9686"}],"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=9686"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9686\/revisions"}],"predecessor-version":[{"id":15240,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9686\/revisions\/15240"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}