{"id":8611,"date":"2009-03-24T02:28:48","date_gmt":"2009-03-23T19:28:48","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/danh-gia-hien-trang-rung-tu-nhien-o-tu-ne-tan-lac-hoa-binh\/"},"modified":"2019-09-25T10:11:31","modified_gmt":"2019-09-25T03:11:31","slug":"danh-gia-hien-trang-rung-tu-nhien-o-tu-ne-tan-lac-hoa-binh","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/danh-gia-hien-trang-rung-tu-nhien-o-tu-ne-tan-lac-hoa-binh\/","title":{"rendered":"\u0110\u00e1nh gi\u00e1 hi\u1ec7n tr\u1ea1ng r\u1eebng t\u1ef1 nhi\u00ean \u1edf T\u1eed N\u00ea-T\u00e2n L\u1ea1c-Ho\u00e0 B\u00ecnh"},"content":{"rendered":"

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

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

R\u1eebng t\u1ef1 nhi\u00ean c\u1ee7a n\u01b0\u1edbc ta \u0111ang ng\u00e0y c\u00e0ng b\u1ecb gi\u1ea3m s\u00fat c\u1ea3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng. \u0110\u00f3 l\u00e0 th\u1ef1c tr\u1ea1ng m\u00e0 ch\u00fang ta \u0111ang ph\u1ea3i kh\u1eafc ph\u1ee5c. Vi\u1ec7c ph\u1ee5c h\u1ed3i l\u1ea1i c\u00e1c h\u1ec7 sinh th\u00e1i r\u1eebng kh\u00f4ng ch\u1ec9 c\u00f3 \u00fd ngh\u0129a v\u1ec1 m\u1eb7t m\u00f4i tr\u01b0\u1eddng m\u00e0 c\u00f2n c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 m\u1eb7t kinh t\u1ebf. T\u1eed N\u00ea l\u00e0 m\u1ed9t x\u00e3 v\u00f9ng s\u00e2u c\u1ee7a huy\u1ec7n T\u00e2n L\u1ea1c, t\u1ec9nh Ho\u00e0 B\u00ecnh c\u00f3 t\u1ed5ng di\u1ec7n t\u00edch \u0111\u1ea5t l\u00e2m nghi\u1ec7p l\u00e0 306ha.Trong nh\u1eefng n\u0103m qua, r\u1eebng t\u1ef1 nhi\u00ean thu\u1ed9c khu v\u1ef1c n\u00e0y \u0111\u00e3 b\u1ecb khai th\u00e1c m\u1ea1nh l\u00e0m cho r\u1eebng tr\u1edf n\u00ean ngh\u00e8o ki\u1ec7t. \u0110\u1ec3 c\u00f3 c\u01a1 s\u1edf t\u00e1c \u0111\u1ed9ng h\u1ee3p l\u00fd nh\u1eb1m kh\u00f4i ph\u1ee5c l\u1ea1i h\u1ec7 sinh th\u00e1i r\u1eebng t\u1ea1i khu v\u1ef1c n\u00e0y th\u00ec vi\u1ec7c \u0111i\u1ec1u tra, \u0111\u00e1nh gi\u00e1 hi\u1ec7n tr\u1ea1ng r\u1eebng l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n

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

\u0110\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c th\u1ef1c tr\u1ea1ng r\u1eebng t\u1ef1 nhi\u00ean v\u00e0 t\u00ecnh h\u00ecnh t\u00e1i sinh r\u1eebng \u1edf T\u1eed N\u00ea nh\u1eb1m ph\u1ee5c h\u1ed3i l\u1ea1i h\u1ec7 sinh th\u00e1i r\u1eebng b\u1eb1ng c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh.<\/p>\n

2. N\u1ed9i dung v\u00e0 ph\u01b0\u01a1ng ph\u00e1p:<\/strong><\/p>\n

2.1. <\/em><\/strong>N\u1ed9i dung: <\/em><\/strong><\/p>\n

-X\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ec9 ti\u00eau l\u00e2m h\u1ecdc c\u1ee7a l\u00e2m ph\u1ea7n nh\u01b0: D1.3<\/sub>, Hvn, N\/ha, M\/ha<\/p>\n

– V\u1ebd ph\u1eabu \u0111\u1ed3 r\u1eebng \u0111\u1ec3 t\u00ednh \u0111\u1ed9 t\u00e0n che<\/p>\n

– L\u1eadp c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh cho t\u1ea7ng c\u00e2y g\u1ed7 v\u00e0 c\u00e2y t\u00e1i sinh c\u1ee7a c\u00e1c \u00f4 ti\u00eau chu\u1ea9n .<\/p>\n

– X\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ec9 ti\u00eau nh\u01b0: s\u1ed1 l\u01b0\u1ee3ng, ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ph\u00e2n b\u1ed1 c\u1ee7a t\u1ea7ng c\u00e2y g\u1ed7 v\u00e0 c\u00e2y t\u00e1i sinh c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf.<\/p>\n

2.2. Ph\u01b0\u01a1ng ph\u00e1p:<\/em><\/strong><\/p>\n

Kh\u1ea3o s\u00e1t khu v\u1ef1c nghi\u00ean c\u1ee9u, b\u1ed1 tr\u00ed c\u00e1c \u00f4 th\u00ed nghi\u1ec7m theo ph\u01b0\u01a1ng ph\u00e1p \u00f4 ti\u00eau chu\u1ea9n \u0111i\u1ec3n h\u00ecnh. Di\u1ec7n t\u00edch m\u1ed7i \u00f4 ti\u00eau chu\u1ea9n l\u00e0 30x30m. Trong m\u1ed7i \u00f4 thu th\u1eadp c\u00e1c ch\u1ec9 ti\u00eau: D1.3<\/sub>, Hvn, Hdc, Dtv\u00e0 v\u1ebd ph\u1eabu \u0111\u1ed3 r\u1eebng theo k\u00edch th\u01b0\u1edbc 30x10m tr\u00ean gi\u1ea5y k\u1ebb ly. Ngo\u00e0i ra, trong m\u1ed7i \u00f4 ti\u00eau chu\u1ea9n l\u1eadp 4 \u00f4 d\u1ea1ng b\u1ea3n \u1edf 4 g\u00f3c, m\u1ed7i \u00f4 c\u00f3 di\u1ec7n t\u00edch 4x4m \u0111\u1ec3 \u0111i\u1ec1u tra t\u00e1i sinh, trong m\u1ed7i \u00f4 d\u1ea1ng b\u1ea3n th\u1ed1ng k\u00ea s\u1ed1 c\u00e2y theo lo\u00e0i, \u0111o Hvn, ph\u1ea9m ch\u1ea5t v\u00e0 ngu\u1ed3n g\u1ed1c c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y t\u00e1i sinh. H\u1ec7 s\u1ed1 t\u1ed5 th\u00e0nh \u0111\u01b0\u1ee3c t\u00ednh theo ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a Daniel Marmillod.<\/p>\n

3. K\u1ebft qu\u1ea3:<\/strong><\/p>\n

3.1. V\u1ec1 t\u1ea7ng c\u00e2y cao:<\/em><\/strong><\/p>\n

Nh\u00ecn chung r\u1eebng t\u1ef1 nhi\u00ean thu\u1ed9c khu v\u1ef1c nghi\u00ean c\u1ee9u \u0111\u00e3 b\u1ecb t\u00e1c \u0111\u1ed9ng m\u1ea1nh, c\u1ea5u tr\u00fac r\u1eebng \u0111\u00e3 b\u1ecb ph\u00e1 v\u1ee1. \u0110\u1ed9 t\u00e0n che c\u1ee7a r\u1eebng t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p, t\u1eeb 0.5 \u0111\u1ebfn 0.6, t\u00e1n r\u1eebng b\u1ecb v\u1ee1 th\u00e0nh t\u1eebng m\u1ea3ng do khai th\u00e1c ch\u1ecdn, \u0111\u1ec3 l\u1ea1i nh\u1eefng l\u1ed7 tr\u1ed1ng l\u1edbn trong r\u1eebng. T\u1ed5 th\u00e0nh lo\u00e0i t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n. Theo Daniel Marmillod nh\u1eefng lo\u00e0i c\u00f3 h\u1ec7 s\u1ed1 IV >5% \u0111\u01b0\u1ee3c coi l\u00e0 nh\u00f3m lo\u00e0i \u01b0u th\u1ebf, k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra cho th\u1ea5y nh\u00f3m lo\u00e0i \u01b0u th\u1ebf g\u1ed3m: R\u00e0ng r\u00e0ng m\u00edt, m\u00f2i, d\u1ebb, kh\u00e1o, v\u1ea9y \u1ed1c, \u0111\u01b0a, xoan \u0111\u00e0o, ng\u00e1t, b\u1ee9a, th\u1ec3 hi\u1ec7n qua c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh \u1edf c\u00e1c \u00f4 \u0111i\u1ec1u tra nh\u01b0 sau:<\/p>\n

B\u1ea3ng 1: C\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh c\u1ee7a c\u00e1c \u00f4 ti\u00eau chu\u1ea9n (c\u00e1c \u0111\u1ed3i) t\u1ea7ng c\u00e2y cao:<\/strong><\/p>\n\n\n\n\n\n\n\n
T\u00ean \u0111\u1ed3i<\/strong><\/td>\n\n

C\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh t\u1ea7ng c\u00e2y cao<\/em><\/h2>\n<\/td>\n

Ch\u00fa gi\u1ea3i: Mc: m\u00e1u ch\u00f3<\/p>\n

De: d\u1ebb Vo: v\u1ea9y \u1ed1c,<\/p>\n

Me: m\u00e9<\/p>\n

Ng: ng\u00e1t Rr: r\u00e0ng r\u00e0ng<\/p>\n

Bu: b\u1ee9a M\u0111: m\u00e1n \u0111\u1ec9a<\/p>\n

Mo: m\u00f2i X\u0111: xoan \u0111\u00e0o<\/td>\n<\/tr>\n

Tr\u00e2m (o1)<\/td>\n2.1De +1.1Vo +0.9Bu +0.7Rr +0.7Ng<\/td>\n<\/tr>\n
Bay Khau(o2)<\/td>\n1.3Ng +0.9De +0.8M\u0111 +0.6 Vr +0.6Mo<\/td>\n<\/tr>\n
Tr\u00e0ng (o3)<\/td>\n1.7Mo +1.2Rr +1.2Ng +0.7Mc +0.6X\u0111<\/td>\n<\/tr>\n
Cheo d\u01b0\u1edbi (o4)<\/td>\n3De +1.6Ng +1.1Mo +0.5Me<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

R\u1eebng hi\u1ec7n t\u1ea1i \u1edf tr\u1ea1ng th\u00e1i ngh\u00e8o ki\u1ec7t. \u0110\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n c\u1ee7a t\u1ea7ng c\u00e2y cao l\u00e0 14cm, chi\u1ec1u cao b\u00ecnh qu\u00e2n l\u00e0 9.2m v\u00e0 tr\u1eef l\u01b0\u1ee3ng b\u00ecnh qu\u00e2n l\u00e0 60.129m3<\/sup>\/ha. C\u00e1c k\u1ebft qu\u1ea3 cho \u1edf b\u1ea3ng sau:<\/p>\n

B\u1ea3ng 2: K\u1ebft qu\u1ea3 c\u00e1c ch\u1ec9 ti\u00eau l\u00e2m ph\u1ea7n c\u1ee7a c\u00e1c \u00f4 ti\u00eau chu\u1ea9n (c\u00e1c \u0111\u1ed3i) t\u1ea7ng c\u00e2y cao:<\/strong><\/p>\n\n\n\n\n\n\n\n
\u0110\u1ed3i<\/strong><\/p>\n

Ch\u1ec9 ti\u00eau<\/strong><\/td>\n

Tr\u00e2m (O1)<\/strong><\/td>\nBay Khau(O2)<\/strong><\/td>\nTr\u00e0ng (O3)<\/strong><\/td>\nCheo d\u01b0\u1edbi (O4)<\/strong><\/td>\n<\/tr>\n
\n

D1.3 (cm)<\/h1>\n<\/td>\n

14.8<\/td>\n15.0<\/td>\n14.3<\/td>\n12.4<\/td>\n<\/tr>\n
Hvn (m)<\/td>\n9.8<\/td>\n9.9<\/td>\n8.9<\/td>\n8.2<\/td>\n<\/tr>\n
N\/ha(c\u00e2y\/ha)<\/td>\n511<\/td>\n633<\/td>\n456<\/td>\n478<\/td>\n<\/tr>\n
M\/ha(m3<\/sup>\/ha)<\/td>\n75.146<\/td>\n79.374<\/td>\n49.328<\/td>\n36.668<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u1eeb k\u1ebft qu\u1ea3 tr\u00ean cho th\u1ea5y m\u1eadt \u0111\u1ed9 c\u00e2y\/ha c\u1ee7a c\u00e1c \u00f4 t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn, t\u1eeb 511 \u0111\u1ebfn 633 c\u00e2y\/ha,trung b\u00ecnh l\u00e0 520c\u00e2y\/ha song tr\u1eef l\u01b0\u1ee3ng r\u1eebng l\u1ea1i r\u1ea5t th\u1ea5p, t\u1eeb 36.668 \u0111\u1ebfn 79.374m3<\/sup>\/ha. V\u00ec nh\u1eefng c\u00e2y to v\u00e0 c\u00f3 gi\u00e1 tr\u1ecb \u0111\u00e3 b\u1ecb khai th\u00e1c, ch\u1ec9 c\u00f2n l\u1ea1i nh\u1eefng c\u00e2y nh\u1ecf ph\u1ea9m ch\u1ea5t x\u1ea5u v\u00e0 \u00edt gi\u00e1 tr\u1ecb kinh t\u1ebf. Ph\u00e2n b\u1ed1 N\/D l\u00e0 d\u1ea1ng ph\u00e2n b\u1ed1 gi\u1ea3m, l\u1ec7ch tr\u00e1i, \u0111\u01b0\u1eddng cong c\u00f3 nhi\u1ec1u \u0111\u1ec9nh th\u1ec3 hi\u1ec7n r\u00f5 s\u1ef1 khai th\u00e1c ch\u1ecdn. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ea5y r\u00f5 qua bi\u1ec3u \u0111\u1ed3 ph\u00e2n b\u1ed1 N\/D:<\/p>\n

3.2.. V\u1ec1 t\u00e1i sinh:<\/em><\/strong><\/p>\n

R\u1eebng t\u1ed3n t\u1ea1i v\u00e0 ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c l\u00e0 do c\u00f3 l\u1edbp c\u00e2y t\u00e1i sinh thay th\u1ebf d\u1ea7n c\u00e1c th\u1ebf h\u1ec7 t\u1ea7ng c\u00e2y cao. V\u00ec th\u1ebf, \u0111i\u1ec1u tra t\u00e1i sinh c\u0169ng l\u00e0 c\u00f4ng vi\u1ec7c c\u1ea7n thi\u1ebft trong vi\u1ec7c ph\u1ee5c h\u1ed3i r\u1eebng.K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra t\u00e1i sinh \u1edf 4 \u00f4 ti\u00eau chu\u1ea9n cho \u1edf b\u1ea3ng sau:<\/p>\n

B\u1ea3ng 3: K\u1ebft qu\u1ea3 c\u00e1c ch\u1ec9 ti\u00eau c\u1ee7a c\u00e1c \u00f4 t\u00e1i sinh:<\/strong><\/p>\n\n\n\n\n\n\n
\u0110\u1ed3i<\/p>\n

Ch\u1ec9 ti\u00eau<\/td>\n

Tr\u00e2m (O1)<\/strong><\/td>\nBay Khau (O2)<\/strong><\/td>\nTr\u00e0ng (O3)<\/strong><\/td>\nCheo d\u01b0\u1edbi (O4)<\/strong><\/td>\n<\/tr>\n
Hvn (m)<\/td>\n2.1<\/td>\n1.8<\/td>\n1.7<\/td>\n2.2<\/td>\n<\/tr>\n
N\/\u00f4 (c\u00e2y\/\u00f4)<\/td>\n92<\/td>\n133<\/td>\n129<\/td>\n110<\/td>\n<\/tr>\n
N\/ha (c\u00e2y\/ha)<\/td>\n14375<\/td>\n20780<\/td>\n20156<\/td>\n15625<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft qu\u1ea3 tr\u00ean cho th\u1ea5y m\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn, t\u1eeb 14375 \u0111\u1ebfn 20780 c\u00e2y\/ha, trung b\u00ecnh l\u00e0 17734c\u00e2y\/ha. Tuy nhi\u00ean, th\u00e0nh ph\u1ea7n lo\u00e0i c\u00e2y kh\u00f4ng phong ph\u00fa. T\u1eeb c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh cho th\u1ea5y nh\u00f3m lo\u00e0i t\u00e1i sinh chi\u1ebfm \u01b0u th\u1ebf g\u1ed3m: r\u00e0ng r\u00e0ng m\u00edt, de, kh\u00e1o, m\u00e1n \u0111\u1ec9a,m\u00f2i, ba g\u1ea1c, \u1edbt s\u1eebng, tr\u00e2m, \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua b\u1ea3ng sau \u0111\u00e2y:<\/p>\n

B\u1ea3ng 4: C\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh c\u1ee7a c\u00e1c \u00f4 t\u00e1i sinh:<\/strong><\/p>\n\n\n\n\n\n\n\n
\u0110\u1ed3i<\/strong><\/td>\nC\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh l\u1edbp c\u00e2y t\u00e1i sinh<\/strong><\/td>\nCh\u00fa gi\u1ea3i: Bg: ba g\u1ea1c<\/p>\n

Rr: r\u00e0ng r\u00e0ng m\u00edt, De: d\u1ebb<\/p>\n

Tr: Tr\u00e2m, M\u0111: m\u00e1n \u0111\u1ec9a<\/p>\n

Bb: b\u01b0\u1edfi bung, Mo: m\u00f2i<\/p>\n

Kh: kh\u00e1o, Cr: ch\u00e8 r\u1eebng<\/p>\n

Ot: \u1edbt s\u1eebng, Vo: v\u1ea3y \u1ed1c<\/td>\n<\/tr>\n

Tr\u00e2m (O1)<\/td>\n3.8Rr + 1.4De +0.8Tr +0.7Ot + 0.5M\u0111<\/td>\n<\/tr>\n
Bay Khau(O2)<\/td>\n1.9Kh +1.7Rr +0.8Vo +0.8Cr +0.6De +0.6Mo<\/td>\n<\/tr>\n
Tr\u00e0ng (O3)<\/td>\n3.6Rr +1.6Bg +1.5Mo +1Kh +0.7De<\/td>\n<\/tr>\n
Cheo d\u01b0\u1edbi(O4)<\/td>\n2.8Rr +2.3Mo +0.8Kh +0.7Bb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Trong nh\u00f3m lo\u00e0i c\u00e2y chi\u1ebfm \u01b0u th\u1ebf \u0111\u00f3 th\u00ec s\u1ed1 lo\u00e0i c\u00e2y m\u1ee5c \u0111\u00edch g\u1ed3m r\u00e0ng r\u00e0ng m\u00edt, m\u00f2i, d\u1ebb v\u00e0 xoan \u0111\u00e0o v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u00e0 8711 c\u00e2y\/ha. C\u00e1c lo\u00e0i n\u00e0y t\u00e1i sinh m\u1ea1nh \u1edf d\u01b0\u1edbi v\u00e0 xung quanh g\u1ed1c c\u00e2y m\u1eb9 b\u1eb1ng c\u1ea3 hai h\u00ecnh th\u1ee9c ch\u1ed3i v\u00e0 h\u1ea1t do t\u1ea7ng c\u00e2y cao v\u1eabn c\u00f2n nh\u1eefng c\u00e2y m\u1eb9 gieo gi\u1ed1ng. S\u1ed1 c\u00e2y t\u00e1i sinh m\u1ee5c \u0111\u00edch c\u00f3 H>2m trung b\u00ecnh l\u00e0 3516 c\u00e2y\/ha.<\/p>\n

B\u1ea3ng 5: s\u1ed1 l\u01b0\u1ee3ng c\u00e2y m\u1ee5c \u0111\u00edch t\u1ea7ng c\u00e2y g\u1ed7 v\u00e0 c\u00e2y t\u00e1i sinh\/ha:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
Lo\u00e0i<\/strong><\/td>\nT\u1ea7ng c\u00e2y g\u1ed7<\/strong><\/td>\nL\u1edbp c\u00e2y t\u00e1i sinh<\/strong><\/td>\n<\/tr>\n
T\u1ed5ng<\/strong><\/td>\nS\u1ed1 c\u00e2y t\u00e1i sinh c\u00f3 H>2m<\/strong><\/td>\n<\/tr>\n
R\u00e0ng r\u00e0ng<\/td>\n36<\/td>\n5117<\/td>\n1641<\/td>\n<\/tr>\n
D\u1ebb<\/td>\n72<\/td>\n1563<\/td>\n977<\/td>\n<\/tr>\n
M\u00f2i<\/td>\n36<\/td>\n1992<\/td>\n898<\/td>\n<\/tr>\n
Xoan \u0111\u00e0o<\/td>\n11<\/td>\n39<\/td>\n<\/tr>\n
T\u1ed5ng<\/strong><\/td>\n155<\/strong><\/td>\n8711<\/strong><\/td>\n3516<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tuy nhi\u00ean, ph\u00e2n b\u1ed1 h\u00ecnh th\u00e1i c\u1ee7a c\u00e2y t\u00e1i sinh kh\u00f4ng \u0111\u1ec1u ch\u1ee7 y\u1ebfu l\u00e0 ph\u00e2n b\u1ed1 c\u1ee5m. Ph\u00e2n b\u1ed1 N\/Hvn c\u0169ng t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf c\u1ee1 chi\u1ec1u cao t\u1eeb 1.5-2m th\u1ec3 hi\u1ec7n qua bi\u1ec3u ph\u00e2n b\u1ed1 N\/H nh\u01b0 tr\u00ean.<\/p>\n

4. K\u1ebft lu\u1eadn<\/strong>:<\/p>\n

Qua \u0111\u00e1nh gi\u00e1 r\u1eebng t\u1ef1 nhi\u00ean khu v\u1ef1c T\u1eed N\u00ea r\u00fat ra m\u1ed9t s\u1ed1 k\u1ebft lu\u1eadn sau:<\/p>\n

R\u1eebng t\u1ef1 nhi\u00ean c\u1ee7a khu v\u1ef1c \u1edf tr\u1ea1ng th\u00e1i ngh\u00e8o ki\u1ec7t, tr\u1eef l\u01b0\u1ee3ng b\u00ecnh qu\u00e2n l\u00e0 60.129m3<\/sup>\/ha. S\u1ed1 c\u00e2y m\u1ee5c \u0111\u00edch t\u1ea7ng c\u00e2y cao chi\u1ebfm \u01b0u th\u1ebf 155 c\u00e2y\/ha v\u00e0 t\u1eadp trung \u1edf c\u1ee1 D = 10cm g\u1ed3m: r\u00e0ng r\u00e0ng m\u00edt, m\u00f2i, d\u1ebb v\u00e0 xoan \u0111\u00e0o. Tuy nhi\u00ean, m\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh c\u00f3 tri\u1ec3n v\u1ecdng l\u1edbn (3516 c\u00e2y\/ha) g\u1ed3m c\u00e1c lo\u00e0i: r\u00e0ng r\u00e0ng m\u00edt, d\u1ebb, m\u00f2i v\u00e0 v\u1edbi \u0111\u1ed9 t\u00e0n che t\u1eeb 0.5-0.6, ti\u00eau chu\u1ea9n \u0111\u01b0a v\u00e0o nu\u00f4i d\u01b0\u1ee1ng r\u1eebng theo quy ph\u1ea1m 14-92. M\u1eb7t kh\u00e1c, do t\u1ea7ng c\u00e2y g\u1ed7 c\u00f3 m\u1ed9t s\u1ed1 c\u00e2y m\u1eb9 c\u00f3 kh\u1ea3 n\u0103ng gieo gi\u1ed1ng v\u00e0 ph\u00e2n b\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ec1u n\u00ean c\u00f3 th\u1ec3 x\u00fac ti\u1ebfn t\u00e1i sinh t\u1ef1 nhi\u00ean b\u1eb1ng c\u00e1ch lu\u1ed7ng ph\u00e1t d\u00e2y leo c\u00e2y b\u1ee5i, gi\u1eef l\u1ea1i c\u00e1c c\u00e2y m\u1eb9 v\u00e0 \u0111i\u1ec1u ch\u1ec9nh s\u1ef1 ph\u00e2n b\u1ed1 h\u00ecnh th\u00e1i c\u1ee7a l\u1edbp c\u00e2y t\u00e1i sinh c\u00f3 tri\u1ec3n v\u1ecdng theo d\u1ea1ng ph\u00e2n b\u1ed1 \u0111\u1ec1u \u0111\u1ec3 \u0111\u01b0a r\u1eebng theo m\u1ee5c \u0111\u00edch kinh doanh.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/strong><\/p>\n

V\u1ee5 KHCN&CLSP 2001- V\u0103n b\u1ea3n ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt l\u00e2m sinh t\u1eadp 2, Nh\u00e0 xu\u1ea5t b\u1ea3n N\u00f4ng nghi\u1ec7p H\u00e0 N\u1ed9i 2001.<\/p>\n

V\u1ee5 KHCN&CLSP, T\u00ean c\u00e2y r\u1eebng Vi\u1ec7t Nam, Nh\u00e0 xu\u1ea5t b\u1ea3n N\u00f4ng nghi\u1ec7p H\u00e0 N\u1ed9i 2000.<\/p>\n

Tr\u1ea7n C\u1ea9m T\u00fa 1999, Nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac v\u00e0 t\u0103ng tr\u01b0\u1edfng r\u1eebng t\u1ef1 nhi\u00ean ph\u1ee5c h\u1ed3i sau khai th\u00e1c l\u00e0m c\u01a1 s\u1edf \u0111\u1ec1 xu\u1ea5t m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p x\u1eed l\u00fd l\u00e2m sinh trong \u0111i\u1ec1u ch\u1ebf r\u1eebng \u1edf H\u01b0\u01a1ng S\u01a1n – H\u00e0 T\u0129nh- Lu\u1eadn \u00e1n TS N\u00f4ng nghi\u1ec7p, 1999.<\/p>\n

Summary: <\/strong>Evaluation of forest in Tu Ne -Tan Lac-Hoa Binh shows that forest in this region has been exploited to depletion, only average and small tress remain. Forest structure is impaired, forest coverage is slow, species composition is complex, regeneration is simple. Desired and dominant species consist of Ormosia balansae, Lithocar[us gigantopy, Prunus arborea<\/em>. Number of desired trees in timber-tree storey remains 155 trees\/ha, meeting the standard for maintenance. Silvicultural measures are needed such as clearing of climbers, bushes, adjusting the distribution of regenerated trees to promote natural regeneration and improve the forest quality.<\/p>\n","protected":false},"excerpt":{"rendered":"

R\u1eebng t\u1ef1 nhiên c\u1ee7a n\u01b0\u1edbc ta \u0111ang ngày càng b\u1ecb gi\u1ea3m sút c\u1ea3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng và ch\u1ea5t l\u01b0\u1ee3ng. \u0110ó là th\u1ef1c tr\u1ea1ng mà chúng ta \u0111ang ph\u1ea3i kh\u1eafc ph\u1ee5c. Vi\u1ec7c ph\u1ee5c h\u1ed3i l\u1ea1i các h\u1ec7 sinh thái r\u1eebng không ch\u1ec9 có ý ngh\u0129a v\u1ec1 m\u1eb7t môi tr\u01b0\u1eddng mà còn có giá tr\u1ecb v\u1ec1 m\u1eb7t kinh t\u1ebf. T\u1eed Nê là m\u1ed9t xã vùng sâu c\u1ee7a huy\u1ec7n Tân L\u1ea1c, t\u1ec9nh Hoà Bình có t\u1ed5ng di\u1ec7n tích \u0111\u1ea5t lâm nghi\u1ec7p là 306ha.<\/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\/8611"}],"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=8611"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8611\/revisions"}],"predecessor-version":[{"id":19290,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8611\/revisions\/19290"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}