{"id":9677,"date":"2011-11-17T02:24:08","date_gmt":"2011-11-16T19:24:08","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2011\/11\/xac-dinh-duong-carbon-co-so-cho-rung-phuc-hoi-sau-nuong-ray-tai-tuong-duong-nghe-an\/"},"modified":"2015-05-19T14:15:42","modified_gmt":"2015-05-19T07:15:42","slug":"xac-dinh-duong-carbon-co-so-cho-rung-phuc-hoi-sau-nuong-ray-tai-tuong-duong-nghe-an","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/xac-dinh-duong-carbon-co-so-cho-rung-phuc-hoi-sau-nuong-ray-tai-tuong-duong-nghe-an\/","title":{"rendered":"X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf cho r\u1eebng ph\u1ee5c h\u1ed3i sau n\u01b0\u01a1ng r\u1eaby t\u1ea1i T\u01b0\u01a1ng D\u01b0\u01a1ng, Ngh\u1ec7 An"},"content":{"rendered":"<p><strong>Tr\u1ea7n Quang B\u1ea3o<\/strong><\/p>\n<p><em>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/em><\/p>\n<p><strong>T\u00d3M T\u1eaeT<\/strong><\/p>\n<p>Tr\u1ed3ng r\u1eebng\/t\u00e1i tr\u1ed3ng r\u1eebng theo c\u01a1 ch\u1ebf ph\u00e1t tri\u1ec3n s\u1ea1ch \u0111\u00e3 v\u00e0 \u0111ang tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn \u1edf nhi\u1ec1u n\u01a1i tr\u00ean th\u1ebf gi\u1edbi. M\u1ed9t trong nh\u1eefng ti\u00eau ch\u00ed \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 tr\u1ed3ng r\u1eebng CDM hay kh\u00f4ng \u0111\u00f3 l\u00e0 \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf c\u1ea7n c\u0103n c\u1ee9 v\u00e0o di\u1ec5n th\u1ebf t\u1ef1 nhi\u00ean c\u1ee7a th\u1ea3m th\u1ef1c v\u1eadt tr\u00ean \u0111\u1ea5t hoang h\u00f3a. \u0110\u1ed1i v\u1edbi r\u1eebng ph\u1ee5c h\u1ed3i sau n\u01b0\u01a1ng r\u1eaby \u1edf T\u01b0\u01a1ng D\u01b0\u01a1ng \u2013 Ngh\u1ec7 An, th\u1ea3m th\u1ef1c v\u1eadt \u0111\u01b0\u1ee3c chia theo s\u1ed1 n\u0103m ng\u1eebng canh t\u00e1c n\u01b0\u01a1ng r\u1eaby trong v\u00f2ng 10 n\u0103m. K\u1ebft qu\u1ea3 t\u00ednh to\u00e1n l\u01b0\u1ee3ng carbon cho th\u1ea5y trong kho\u1ea3ng 4 n\u0103m \u0111\u1ea7u ph\u1ee5c h\u1ed3i, l\u01b0\u1ee3ng carbon ch\u1ee7 y\u1ebfu t\u1eadp trung \u1edf l\u1edbp c\u1ecf l\u00e0o, \u0111\u1ebfn n\u0103m th\u1ee9 4 l\u01b0\u1ee3ng carbon t\u00edch l\u0169y \u0111\u01b0\u1ee3c chia t\u1eadp trung \u1edf c\u1ea3 3 l\u1edbp (c\u1ecf l\u00e0o, c\u00e2y b\u1ee5i v\u00e0 c\u00e2y t\u00e1i sinh) v\u00e0 t\u1eeb n\u0103m th\u1ee9 6 \u0111\u1ebfn n\u0103m th\u1ee9 10, l\u01b0\u1ee3ng carbon l\u1ea1i t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf t\u1ea7ng c\u00e2y cao (do c\u00e2y t\u00e1i sinh h\u00ecnh th\u00e0nh). T\u1eeb s\u1ed1 li\u1ec7u carbon trong c\u00e1c tr\u1ea1ng th\u00e1i \u0111\u1ea5t b\u1ecf h\u00f3a kh\u00e1c nhau, \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng theo d\u1ea1ng h\u00e0m li\u00ean h\u1ec7 h\u1ed3i quy tuy\u1ebfn t\u00ednh m\u1ed9t l\u1edbp nh\u01b0 sau: Y = 31,622Ln(X) + 17,149 v\u1edbi h\u1ec7 s\u1ed1 t\u01b0\u01a1ng quan r\u1ea5t cao (R = 0,91).<strong><\/strong><\/p>\n<p><strong>T\u1eeb kh\u00f3a:<\/strong> A\/R CDM, bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu, \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf, gi\u1ea3m ph\u00e1t th\u1ea3i, REDD<strong><\/strong><\/p>\n<p><strong>\u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/strong><\/p>\n<p>Tr\u1ed3ng r\u1eebng\/t\u00e1i tr\u1ed3ng r\u1eebng theo c\u01a1 ch\u1ebf ph\u00e1t tri\u1ec3n s\u1ea1ch (A\/R CDM), hay c\u00f2n g\u1ecdi l\u00e0 r\u1eebng h\u1ea5p th\u1ee5 carbon, l\u00e0 m\u1ed9t trong nh\u1eefng bi\u1ec7n ph\u00e1p t\u00edch c\u1ef1c nh\u1eb1m b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng, nh\u1ea5t l\u00e0 trong \u0111i\u1ec1u ki\u1ec7n th\u1ebf gi\u1edbi \u0111ang ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu. Hi\u1ec7u qu\u1ea3 c\u1ee7a m\u1ed9t d\u1ef1 \u00e1n A\/R CDM \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean nhi\u1ec1u ti\u00eau chu\u1ea9n. Trong \u0111\u00f3, \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n quan tr\u1ecdng, l\u00e0 m\u1ed9t trong nh\u1eefng c\u0103n c\u1ee9 \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 d\u1ef1 \u00e1n A\/R CDM v\u00e0 l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 t\u00ednh to\u00e1n hi\u1ec7u qu\u1ea3 h\u1ea5p th\u1ee5 carbon c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n<p>\u0110\u00e3 c\u00f3 nhi\u1ec1u nghi\u00ean c\u1ee9u v\u1ec1 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 carbon c\u1ee7a c\u00e2y r\u1eebng, carbon \u0111\u01b0\u1ee3c t\u00edch l\u0169y trong r\u1eebng \u1edf nhi\u1ec1u b\u1ed9 ph\u1eadn kh\u00e1c nhau: sinh kh\u1ed1i c\u1ee7a c\u00e2y t\u1ea7ng cao, th\u1ef1c v\u1eadt t\u1ea7ng th\u1ea5p, v\u1eadt r\u01a1i r\u1ee5ng v\u00e0 m\u00f9n trong \u0111\u1ea5t. Tuy nhi\u00ean, t\u1ed5ng sinh kh\u1ed1i c\u1ee7a c\u00e2y tr\u00ean m\u1eb7t \u0111\u1ea5t l\u00e0 b\u1ec3 ch\u1ee9a carbon quan tr\u1ecdng nh\u1ea5t v\u00e0 tr\u1ef1c ti\u1ebfp b\u1ecb \u1ea3nh h\u01b0\u1edfng do suy tho\u00e1i r\u1eebng. V\u00ec v\u1eady, \u01b0\u1edbc t\u00ednh t\u1ed5ng l\u01b0\u1ee3ng sinh kh\u1ed1i tr\u00ean m\u1eb7t \u0111\u1ea5t l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 t\u1ed5ng l\u01b0\u1ee3ng carbon v\u00e0 tu\u1ea7n ho\u00e0n c\u1ee7a n\u00f3 trong h\u1ec7 sinh th\u00e1i r\u1eebng. Quy tr\u00ecnh \u0111o l\u01b0\u1eddng b\u1ec3 ch\u1ee9a carbon \u0111\u01b0\u1ee3c mi\u00eau t\u1ea3 c\u1ee5 th\u1ec3 trong c\u00e1c c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u c\u1ee7a c\u00e1c t\u00e1c gi\u1ea3 nh\u01b0: Post et al., 1999; Brown, 2002; Pearson et al., 2005; IPCC, 2006.<\/p>\n<p>\u1ede Vi\u1ec7t Nam trong th\u1eddi gian v\u1eeba qua, c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 h\u1ea5p th\u1ee5 carbon c\u1ee7a c\u00e1c th\u1ea3m th\u1ef1c v\u1eadt \u1edf Vi\u1ec7t Nam \u0111\u00e3 nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 quan t\u00e2m l\u1edbn c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc. Ng\u00f4 \u0110\u00ecnh Qu\u1ebf (2005) \u0111\u00e3 ti\u1ebfn h\u00e0nh \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 CO<sub>2<\/sub> th\u1ef1c t\u1ebf c\u1ee7a m\u1ed9t s\u1ed1 lo\u00e0i r\u1eebng tr\u1ed3ng nh\u01b0 Th\u00f4ng nh\u1ef1a, Keo lai v\u00e0 B\u1ea1ch \u0111\u00e0n Ur\u00f4 \u1edf c\u00e1c tu\u1ed5i kh\u00e1c nhau, l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c ti\u00eau ch\u00ed v\u00e0 ch\u1ec9 ti\u00eau tr\u1ed3ng r\u1eebng theo c\u01a1 ch\u1ebf ph\u00e1t tri\u1ec3n s\u1ea1ch \u1edf Vi\u1ec7t Nam. Nghi\u00ean c\u1ee9u c\u1ee7a V\u0169 T\u1ea5n Ph\u01b0\u01a1ng (2006) v\u1ec1 tr\u1eef l\u01b0\u1ee3ng carbon trong sinh kh\u1ed1i th\u1ea3m t\u01b0\u01a1i v\u00e0 c\u00e2y b\u1ee5i t\u1ea1i Ho\u00e0 B\u00ecnh v\u00e0 Thanh Ho\u00e1 l\u00e0m c\u01a1 s\u1edf \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf trong d\u1ef1 \u00e1n tr\u1ed3ng r\u1eebng\/t\u00e1i tr\u1ed3ng r\u1eebng theo c\u01a1 ch\u1ebf ph\u00e1t tri\u1ec3n s\u1ea1ch \u1edf Vi\u1ec7t Nam\u2026, V\u00f5 \u0110\u1ea1i H\u1ea3i (2008) \u0111\u00e3 nghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 carbon c\u1ee7a m\u1ed9t s\u1ed1 d\u1ea1ng r\u1eebng tr\u1ed3ng ch\u1ee7 y\u1ebfu \u1edf Vi\u1ec7t Nam nh\u01b0: Keo l\u00e1 tr\u00e0m, M\u1ee1, Th\u00f4ng m\u00e3 v\u0129, Keo tai t\u01b0\u1ee3ng&#8230;<\/p>\n<p>Tuy nhi\u00ean, cho \u0111\u1ebfn nay nh\u1eefng nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf \u1edf c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng ph\u1ee5c h\u1ed3i l\u00e0 ch\u01b0a nhi\u1ec1u. M\u1ed9t s\u1ed1 nghi\u00ean c\u1ee9u \u0111\u00e3 ti\u1ebfn h\u00e0nh nh\u01b0ng ch\u01b0a m\u00f4 ph\u1ecfng \u0111\u01b0\u1ee3c di\u1ec5n bi\u1ebfn c\u1ee7a carbon h\u1ea5p th\u1ee5 theo th\u1eddi gian. Trong khu\u00f4n kh\u1ed5 h\u1ee3p t\u00e1c v\u1edbi c\u01a1 quan h\u1ee3p t\u00e1c qu\u1ed1c t\u1ebf Nh\u1eadt B\u1ea3n (JICA) v\u1ec1 kh\u1ea3o s\u00e1t \u0111\u1ea5t ti\u1ec1m n\u0103ng cho tr\u1ed3ng r\u1eebng theo c\u01a1 ch\u1ebf ph\u00e1t tri\u1ec3n s\u1ea1ch \u1edf Vi\u1ec7t Nam, ch\u00fang t\u00f4i \u0111\u00e3 ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u \u0111i\u1ec3m \u1edf T\u01b0\u01a1ng D\u01b0\u01a1ng, Ngh\u1ec7 An. M\u1ed9t trong nh\u1eefng m\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf cho c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng ph\u1ee5c h\u1ed3i sau n\u01b0\u01a1ng r\u1eaby.<\/p>\n","protected":false},"excerpt":{"rendered":"<p align=\"justify\">\n<span style=\"font-family: Arial; font-size: 10pt\">Tr\u1ed3ng r\u1eebng\/t&aacute;i tr\u1ed3ng r\u1eebng theo c\u01a1 ch\u1ebf ph&aacute;t tri\u1ec3n s\u1ea1ch \u0111&atilde; v&agrave; \u0111ang tr\u1edf n&ecirc;n ph\u1ed5 bi\u1ebfn \u1edf nhi\u1ec1u n\u01a1i tr&ecirc;n th\u1ebf gi\u1edbi. M\u1ed9t trong nh\u1eefng ti&ecirc;u ch&iacute; \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 tr\u1ed3ng r\u1eebng CDM hay kh&ocirc;ng \u0111&oacute; l&agrave; \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf. \u0110\u1ec3 x&aacute;c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng carbon c\u01a1 s\u1edf c\u1ea7n c\u0103n c\u1ee9 v&agrave;o di\u1ec5n th\u1ebf t\u1ef1 nhi&ecirc;n c\u1ee7a th\u1ea3m th\u1ef1c v\u1eadt tr&ecirc;n \u0111\u1ea5t hoang h&oacute;a. \u0110\u1ed1i v\u1edbi r\u1eebng ph\u1ee5c h\u1ed3i sau n\u01b0\u01a1ng r\u1eaby \u1edf T\u01b0\u01a1ng D\u01b0\u01a1ng &ndash; Ngh\u1ec7 An, th\u1ea3m th\u1ef1c v\u1eadt \u0111\u01b0\u1ee3c chia theo s\u1ed1 n\u0103m ng\u1eebng canh t&aacute;c n\u01b0\u01a1ng r\u1eaby trong v&ograve;ng 10 n\u0103m.<\/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\/9677"}],"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=9677"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9677\/revisions"}],"predecessor-version":[{"id":15237,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9677\/revisions\/15237"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9677"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9677"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9677"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}