{"id":30334,"date":"2020-09-23T15:32:00","date_gmt":"2020-09-23T08:32:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=30334"},"modified":"2021-11-22T15:34:59","modified_gmt":"2021-11-22T08:34:59","slug":"bac-cuc-dang-xanh-hon","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/bac-cuc-dang-xanh-hon\/","title":{"rendered":"B\u1eafc C\u1ef1c \u0111ang xanh h\u01a1n"},"content":{"rendered":"\n

Nhi\u1ec7t \u0111\u1ed9 \u1ea5m l\u00ean t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho th\u1ef1c v\u1eadt ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd t\u1ea1i h\u1ec7 sinh th\u00e1i l\u00e3nh nguy\u00ean \u1edf v\u00f9ng c\u1ef1c b\u1eafc c\u1ee7a Tr\u00e1i \u0110\u1ea5t.<\/p>\n\n\n\n

C\u1ea3nh quan t\u1ea1i B\u1eafc C\u1ef1c \u0111ang thay \u0111\u1ed5i. D\u1ef1a tr\u00ean c\u00e1c quan s\u00e1t t\u1eeb v\u1ec7 tinh trong nhi\u1ec1u th\u1eadp k\u1ef7, c\u00e1c nh\u00e0 khoa h\u1ecdc nh\u1eadn th\u1ea5y h\u1ec7 sinh th\u00e1i l\u00e3nh nguy\u00ean t\u1ea1i \u0111\u00e2y \u0111\u00e3 tr\u1edf n\u00ean xanh h\u01a1n do nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea5t v\u00e0 kh\u00f4ng kh\u00ed \u1ea5m l\u00ean th\u00fac \u0111\u1ea9y s\u1ef1 t\u0103ng tr\u01b0\u1edfng c\u1ee7a th\u1ef1c v\u1eadt.<\/p>\n\n\n\n

“L\u00e3nh nguy\u00ean B\u1eafc C\u1ef1c l\u00e0 m\u1ed9t trong nh\u1eefng khu v\u1ef1c l\u1ea1nh nh\u1ea5t v\u00e0 \u1ea5m l\u00ean nhanh ch\u00f3ng nh\u1ea5t tr\u00ean Tr\u00e1i \u0110\u1ea5t. Qu\u00e1 tr\u00ecnh xanh h\u00f3a m\u00e0 ch\u00fang ta th\u1ea5y l\u00e0 m\u1ed9t bi\u1ec3u hi\u1ec7n c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu. \u0110\u00f3 l\u00e0 ph\u1ea3n \u1ee9ng \u1edf quy m\u00f4 qu\u1ea7n x\u00e3 sinh v\u1eadt \u0111\u1ed1i v\u1edbi s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed”, tr\u01b0\u1edfng nh\u00f3m nghi\u00ean c\u1ee9u Logan Berner, nh\u00e0 sinh th\u00e1i h\u1ecdc t\u1ea1i \u0110\u1ea1i h\u1ecdc Northern Arizona c\u1ee7a M\u1ef9, cho bi\u1ebft trong b\u00e0i \u0111\u0103ng tr\u00ean t\u1ea1p ch\u00ed Nature Communications<\/em> h\u00f4m 22\/9.<\/p>\n\n\n\n

C\u00f4ng tr\u00ecnh c\u1ee7a Berner c\u00f9ng c\u00e1c c\u1ed9ng s\u1ef1 l\u00e0 nghi\u00ean c\u1ee9u \u0111\u1ea7u ti\u00ean \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 thay \u0111\u1ed5i c\u1ee7a th\u1ef1c v\u1eadt tr\u00ean to\u00e0n b\u1ed9 l\u00e3nh nguy\u00ean B\u1eafc C\u1ef1c, k\u00e9o d\u00e0i t\u1eeb Alaska v\u00e0 Canada \u0111\u1ebfn v\u00f9ng Siberia, b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng d\u1eef li\u1ec7u t\u1eeb v\u1ec7 tinh Landsat – m\u1ed9t s\u1ee9 m\u1ec7nh chung gi\u1eefa NASA v\u00e0 C\u1ee5c Kh\u1ea3o s\u00e1t \u0110\u1ecba ch\u1ea5t M\u1ef9 (USGS).<\/p>\n\n\n\n

\"M\u1ed9t
M\u1ed9t con tu\u1ea7n l\u1ed9c t\u1eadn h\u01b0\u1edfng nh\u1eefng ng\u1ecdn c\u1ecf xanh t\u01b0\u01a1i tr\u00ean l\u00e3nh nguy\u00ean B\u1eafc C\u1ef1c. \u1ea2nh: Logan Berner.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n

Qu\u00e1 tr\u00ecnh xanh h\u00f3a B\u1eafc C\u1ef1c \u0111\u1ea1i di\u1ec7n cho s\u1ef1 ph\u00e1t tri\u1ec3n nhi\u1ec1u h\u01a1n v\u00e0 d\u00e0y \u0111\u1eb7c h\u01a1n c\u1ee7a th\u1ea3m th\u1ef1c v\u1eadt, c\u0169ng nh\u01b0 s\u1ef1 x\u00e2m l\u1ea5n c\u1ee7a c\u00e2y b\u1ee5i thay cho c\u00e1c lo\u1ea1i c\u1ecf v\u00e0 r\u00eau \u0111i\u1ec3n h\u00ecnh c\u1ee7a l\u00e3nh nguy\u00ean, nh\u00f3m nghi\u00ean c\u1ee9u gi\u1ea3i th\u00edch. Khi th\u1ea3m th\u1ef1c v\u1eadt thay \u0111\u1ed5i, n\u00f3 kh\u00f4ng ch\u1ec9 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn \u0111\u1ed9ng v\u1eadt hoang d\u00e3 m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nh\u1eefng ng\u01b0\u1eddi d\u00e2n s\u1ed1ng trong khu v\u1ef1c v\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o h\u1ec7 sinh th\u00e1i b\u1ea3n \u0111\u1ecba \u0111\u1ec3 ki\u1ebfm th\u1ee9c \u0103n.<\/p>\n\n\n\n

Trong khi nhi\u1ec7t \u0111\u1ed9 n\u00f3ng l\u00ean l\u00e0m tan b\u0103ng v\u0129nh c\u1eedu v\u00e0 gi\u1ea3i ph\u00f3ng kh\u00ed nh\u00e0 k\u00ednh, s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a th\u1ea3m th\u1ef1c v\u1eadt l\u1ea1i gi\u00fap h\u1ea5p th\u1ee5 carbon t\u1eeb kh\u00ed quy\u1ec3n. Nghi\u00ean c\u1ee9u m\u1edbi b\u1edfi v\u1eady c\u0169ng gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch c\u00e1c h\u1ec7 sinh th\u00e1i ph\u1ea3n \u1ee9ng bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu.<\/p>\n\n\n\n

Nh\u00f3m c\u1ee7a Berner \u0111\u00e3 s\u1eed d\u1ee5ng d\u1eef li\u1ec7u t\u1eeb v\u1ec7 tinh Landsat v\u00e0 c\u00e1c t\u00ednh to\u00e0n b\u1ed5 sung \u0111\u1ec3 \u01b0\u1edbc t\u00ednh m\u1ee9c \u0111\u1ed9 ph\u1ee7 xanh c\u1ee7a th\u1ef1c v\u1eadt t\u1ea1i 50.000 \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c nhau \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn ng\u1eabu nhi\u00ean tr\u00ean to\u00e0n b\u1ed9 l\u00e3nh nguy\u00ean.<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 cho th\u1ea5y t\u1eeb n\u0103m 1985 \u0111\u1ebfn n\u0103m 2016, kho\u1ea3ng 38% c\u00e1c khu v\u1ef1c l\u00e3nh nguy\u00ean tr\u00ean kh\u1eafp Alaska, Canada v\u00e0 ph\u00eda t\u00e2y l\u1ee5c \u0111\u1ecba \u00c1-\u00c2u \u0111\u00e3 \u0111\u01b0\u1ee3c “h\u00f3a xanh” v\u00e0 ch\u1ec9 c\u00f3 3% cho th\u1ea5y hi\u1ec7u \u1ee9ng “h\u00f3a n\u00e2u” ng\u01b0\u1ee3c l\u1ea1i – c\u00f3 ngh\u0129a l\u00e0 th\u1ef1c v\u1eadt k\u00e9m ph\u00e1t tri\u1ec3n h\u01a1n. T\u1ea1i c\u00e1c \u0111\u1ecba \u0111i\u1ec3m ph\u00eda \u0111\u00f4ng l\u1ee5c \u0111\u1ecba \u00c1-\u00c2u, kho\u1ea3ng 22% di\u1ec7n t\u00edch l\u00e3nh nguy\u00ean \u0111\u01b0\u1ee3c ph\u1ee7 xanh t\u1eeb n\u0103m 2000 \u0111\u1ebfn n\u0103m 2016 v\u00e0 ch\u1ec9 c\u00f3 4% chuy\u1ec3n m\u00e0u n\u00e2u ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n\n\n\n

“Ch\u00fang t\u00f4i nh\u1eadn th\u1ea5y s\u1ef1 ph\u1ee7 xanh \u1edf quy m\u00f4 qu\u1ea7n x\u00e3 sinh v\u1eadt \u1edf B\u1eafc C\u1ef1c x\u1ea3y ra trong c\u00f9ng kho\u1ea3ng th\u1eddi gian nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed m\u00f9a h\u00e8 \u1ea5m l\u00ean nhanh ch\u00f3ng”, Berner cho bi\u1ebft. Khi so s\u00e1nh m\u00f4 h\u00ecnh ph\u1ee7 xanh v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c, nh\u00f3m nghi\u00ean c\u1ee9u nh\u1eadn th\u1ea5y n\u00f3 c\u0169ng li\u00ean quan \u0111\u1ebfn s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m c\u1ee7a \u0111\u1ea5t.<\/p>\n\n\n\n

“V\u1ec7 tinh Landsat l\u00e0 ch\u00eca kh\u00f3a cho c\u00e1c lo\u1ea1i ph\u00e9p \u0111o n\u00e0y v\u00ec n\u00f3 thu th\u1eadp d\u1eef li\u1ec7u \u1edf quy m\u00f4 l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u01b0\u1edbc \u0111\u00e2y. \u0110i\u1ec1u \u0111\u00f3 cho ph\u00e9p ch\u00fang ta t\u00ecm hi\u1ec3u \u0111i\u1ec1u g\u00ec d\u1eabn \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i tr\u00ean to\u00e0n b\u1ed9 l\u00e3nh nguy\u00ean”, Gi\u00e1o s\u01b0 Scott Goetz t\u1eeb \u0110\u1ea1i h\u1ecdc B\u1eafc Arizona, m\u1ed9t th\u00e0nh vi\u00ean trong nh\u00f3m nghi\u00ean c\u1ee9u, chia s\u1ebb.<\/p>\n\n\n\n

\u0110o\u00e0n D\u01b0\u01a1ng<\/strong>\u00a0(Theo\u00a0NASA<\/em>)<\/p>\n\n\n\n

https:\/\/vnexpress.net\/bac-cuc-dang-xanh-hon-4165871.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Nhi\u1ec7t \u0111\u1ed9 \u1ea5m l\u00ean t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho th\u1ef1c v\u1eadt ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd t\u1ea1i h\u1ec7 sinh th\u00e1i l\u00e3nh nguy\u00ean \u1edf v\u00f9ng c\u1ef1c b\u1eafc c\u1ee7a Tr\u00e1i \u0110\u1ea5t. C\u1ea3nh quan t\u1ea1i B\u1eafc C\u1ef1c \u0111ang thay \u0111\u1ed5i. D\u1ef1a tr\u00ean c\u00e1c quan s\u00e1t t\u1eeb v\u1ec7 tinh trong nhi\u1ec1u th\u1eadp k\u1ef7, c\u00e1c nh\u00e0 khoa h\u1ecdc nh\u1eadn th\u1ea5y h\u1ec7 sinh […]<\/p>\n","protected":false},"author":25,"featured_media":30335,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-30334","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30334","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=30334"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30334\/revisions"}],"predecessor-version":[{"id":30336,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30334\/revisions\/30336"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/30335"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=30334"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=30334"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=30334"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}