{"id":3953,"date":"2022-02-06T04:53:58","date_gmt":"2022-02-06T04:53:58","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=3953"},"modified":"2022-02-06T04:53:58","modified_gmt":"2022-02-06T04:53:58","slug":"sudden-aspen-decline-a-case-study-in-the-impact-of-drought-on-forest-health","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/ecology\/sudden-aspen-decline-a-case-study-in-the-impact-of-drought-on-forest-health\/","title":{"rendered":"Gi\u1ea3m m\u1ea1nh c\u00e2y d\u01b0\u01a1ng l\u00e1 rung: T\u00e1c \u0111\u1ed9ng c\u1ee7a h\u1ea1n h\u00e1n \u0111\u1ebfn s\u1ee9c kh\u1ecfe r\u1eebng"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung: Nghi\u00ean c\u1ee9u \u0111i\u1ec3n h\u00ecnh v\u1ec1 t\u00e1c \u0111\u1ed9ng c\u1ee7a h\u1ea1n h\u00e1n \u0111\u1ebfn s\u1ee9c kh\u1ecfe c\u1ee7a r\u1eebng<\/h2>\n\n<h2 class=\"wp-block-heading\">Suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung l\u00e0 g\u00ec?<\/h2>\n\n<p class=\"wp-block-paragraph\">Suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung (SAD) l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e3 v\u00e0 \u0111ang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e2y d\u01b0\u01a1ng l\u00e1 rung \u1edf ph\u00eda t\u00e2y Hoa K\u1ef3 k\u1ec3 t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 2000. N\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7c tr\u01b0ng b\u1edfi s\u1ef1 ch\u1ebft h\u00e0ng lo\u1ea1t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung, th\u01b0\u1eddng tr\u00ean c\u00e1c khu v\u1ef1c r\u1ed9ng l\u1edbn.<\/p>\n\n<h2 class=\"wp-block-heading\">C\u00e1c tri\u1ec7u ch\u1ee9ng c\u1ee7a suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung<\/h2>\n\n<p class=\"wp-block-paragraph\">C\u00e1c tri\u1ec7u ch\u1ee9ng c\u1ee7a SAD bao g\u1ed3m:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>L\u00e1 chuy\u1ec3n sang m\u00e0u v\u00e0ng v\u00e0 r\u1ee5ng<\/li>\n<li>T\u00e1n l\u00e1 th\u01b0a th\u1edbt<\/li>\n<li>C\u00e1c c\u00e0nh c\u00e2y ch\u1ebft d\u1ea7n<\/li>\n<li>To\u00e0n b\u1ed9 c\u00e2y ch\u1ebft<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Nguy\u00ean nh\u00e2n g\u00e2y ra suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung<\/h2>\n\n<p class=\"wp-block-paragraph\">Ban \u0111\u1ea7u, c\u00e1c nh\u00e0 khoa h\u1ecdc nghi ng\u1edd r\u1eb1ng h\u1ea1n h\u00e1n kh\u1eafc nghi\u1ec7t v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao, c\u00f3 th\u1ec3 do bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu g\u00e2y ra, \u0111\u00e3 l\u00e0m suy y\u1ebfu c\u00e2y c\u1ed1i v\u00e0 khi\u1ebfn ch\u00fang d\u1ec5 b\u1ecb SAD h\u01a1n. Tuy nhi\u00ean, m\u1ed9t nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra c\u00e1i ch\u1ebft c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung th\u1ef1c ch\u1ea5t l\u00e0 thi\u1ebfu n\u01b0\u1edbc, ch\u1ee9 kh\u00f4ng ph\u1ea3i thi\u1ebfu th\u1ee9c \u0103n.<\/p>\n\n<h2 class=\"wp-block-heading\">T\u00e1c \u0111\u1ed9ng c\u1ee7a suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng<\/h2>\n\n<p class=\"wp-block-paragraph\">C\u00e2y d\u01b0\u01a1ng l\u00e1 rung l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a h\u1ec7 sinh th\u00e1i \u1edf ph\u00eda t\u00e2y Hoa K\u1ef3. Ch\u00fang cung c\u1ea5p th\u1ee9c \u0103n v\u00e0 n\u01a1i tr\u00fa \u1ea9n cho \u0111\u1ed9ng v\u1eadt hoang d\u00e3, gi\u00fap \u1ed5n \u0111\u1ecbnh \u0111\u1ea5t v\u00e0 \u0111i\u1ec1u ch\u1ec9nh d\u00f2ng ch\u1ea3y c\u1ee7a n\u01b0\u1edbc. S\u1ef1 suy gi\u1ea3m c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7u \u1ee9ng domino \u0111\u1ed1i v\u1edbi to\u00e0n b\u1ed9 h\u1ec7 sinh th\u00e1i.<\/p>\n\n<h2 class=\"wp-block-heading\">C\u00e1ch ng\u0103n ng\u1eeba suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung<\/h2>\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7n ch\u01b0a c\u00f3 c\u00e1ch ch\u1eefa kh\u1ecfi SAD, nh\u01b0ng c\u00f3 m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u1ec3 gi\u00fap ng\u0103n ng\u1eeba n\u00f3. Nh\u1eefng bi\u1ec7n ph\u00e1p n\u00e0y bao g\u1ed3m:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Gi\u1ea3m c\u0103ng th\u1eb3ng do n\u01b0\u1edbc \u0111\u1ed1i v\u1edbi c\u00e2y d\u01b0\u01a1ng l\u00e1 rung b\u1eb1ng c\u00e1ch tr\u1ed3ng ch\u00fang \u1edf nh\u1eefng khu v\u1ef1c \u0111\u1ee7 \u1ea9m<\/li>\n<li>T\u1ec9a th\u01b0a c\u00e1c kh\u00f3m c\u00e2y d\u01b0\u01a1ng l\u00e1 rung \u0111\u1ec3 gi\u1ea3m s\u1ef1 c\u1ea1nh tranh v\u1ec1 n\u01b0\u1edbc v\u00e0 ch\u1ea5t dinh d\u01b0\u1ee1ng<\/li>\n<li>Ki\u1ec3m so\u00e1t s\u00e2u b\u1ec7nh c\u00f3 th\u1ec3 l\u00e0m suy y\u1ebfu c\u00e2y d\u01b0\u01a1ng l\u00e1 rung<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Vai tr\u00f2 c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu trong suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung<\/h2>\n\n<p class=\"wp-block-paragraph\">Bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu c\u00f3 kh\u1ea3 n\u0103ng \u0111\u00f3ng m\u1ed9t vai tr\u00f2 trong SAD b\u1eb1ng c\u00e1ch l\u00e0m t\u0103ng t\u1ea7n su\u1ea5t v\u00e0 m\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng c\u1ee7a h\u1ea1n h\u00e1n \u1edf ph\u00eda t\u00e2y Hoa K\u1ef3. Khi kh\u00ed h\u1eadu ti\u1ebfp t\u1ee5c thay \u0111\u1ed5i, SAD d\u1ef1 ki\u1ebfn s\u1ebd tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n.<\/p>\n\n<h2 class=\"wp-block-heading\">T\u01b0\u01a1ng lai c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung \u1edf mi\u1ec1n T\u00e2y n\u01b0\u1edbc M\u1ef9<\/h2>\n\n<p class=\"wp-block-paragraph\">T\u01b0\u01a1ng lai c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung \u1edf mi\u1ec1n T\u00e2y n\u01b0\u1edbc M\u1ef9 v\u1eabn ch\u01b0a ch\u1eafc ch\u1eafn. N\u1ebfu h\u1ea1n h\u00e1n ti\u1ebfp t\u1ee5c gia t\u0103ng v\u1ec1 t\u1ea7n su\u1ea5t v\u00e0 m\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng, SAD c\u00f3 kh\u1ea3 n\u0103ng s\u1ebd tr\u1edf n\u00ean lan r\u1ed9ng h\u01a1n. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn h\u1ec7 sinh th\u00e1i v\u00e0 n\u1ec1n kinh t\u1ebf c\u1ee7a khu v\u1ef1c.<\/p>\n\n<h2 class=\"wp-block-heading\">Th\u00f4ng tin b\u1ed5 sung<\/h2>\n\n<ul class=\"wp-block-list\">\n<li>Suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e2y d\u01b0\u01a1ng l\u00e1 rung \u1edf c\u00e1c khu v\u1ef1c kh\u00e1c, bao g\u1ed3m Canada v\u00e0 Ch\u00e2u \u00c2u.<\/li>\n<li>Thi\u1ebfu n\u01b0\u1edbc l\u00e0 m\u1ed1i \u0111e d\u1ecda l\u1edbn \u0111\u1ed1i v\u1edbi s\u1ee9c kh\u1ecfe c\u1ee7a c\u00e2y n\u00f3i chung.<\/li>\n<li>C\u0103ng th\u1eb3ng do h\u1ea1n h\u00e1n c\u00f3 th\u1ec3 khi\u1ebfn c\u00e2y r\u1ee5ng l\u00e1 v\u00e0 ch\u1ebft.<\/li>\n<li>T\u1ea7m quan tr\u1ecdng c\u1ee7a n\u01b0\u1edbc \u0111\u1ed1i v\u1edbi c\u00e2y kh\u00f4ng th\u1ec3 c\u01b0\u1eddng \u0111i\u1ec7u qu\u00e1 m\u1ee9c.<\/li>\n<li>T\u00e1c \u0111\u1ed9ng c\u1ee7a bong b\u00f3ng kh\u00ed \u0111\u1ed1i v\u1edbi vi\u1ec7c cung c\u1ea5p n\u01b0\u1edbc c\u00f3 th\u1ec3 g\u00e2y h\u1eadu qu\u1ea3 t\u00e0n kh\u1ed1c cho c\u00e2y.<\/li>\n<li>Vai tr\u00f2 c\u1ee7a r\u1ec5 trong s\u1ee9c kh\u1ecfe c\u1ee7a c\u00e2y l\u00e0 r\u1ea5t thi\u1ebft y\u1ebfu.<\/li>\n<li>T\u00ednh d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng c\u1ee7a c\u00e2y y\u1ebfu tr\u01b0\u1edbc c\u00e1c m\u1ed1i \u0111e d\u1ecda kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00f4n tr\u00f9ng v\u00e0 nhi\u1ec5m n\u1ea5m, l\u00e0 m\u1ed1i quan t\u00e2m ch\u00ednh.<\/li>\n<li>T\u1ea7m quan tr\u1ecdng c\u1ee7a r\u1eebng \u0111\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng \u0111\u00e3 \u0111\u01b0\u1ee3c ghi ch\u00e9p r\u00f5 r\u00e0ng.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y d\u01b0\u01a1ng l\u00e1 rung: Nghi\u00ean c\u1ee9u \u0111i\u1ec3n h\u00ecnh v\u1ec1 t\u00e1c \u0111\u1ed9ng c\u1ee7a h\u1ea1n h\u00e1n \u0111\u1ebfn s\u1ee9c kh\u1ecfe c\u1ee7a r\u1eebng Suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t c\u1ee7a c\u00e2y&hellip;<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[590],"tags":[34,7361,2990,219,7360,7321],"class_list":["post-3953","post","type-post","status-publish","format-standard","hentry","category-ecology","tag-climate-change","tag-aspen-trees","tag-drought","tag-ecology","tag-sudden-aspen-decline","tag-forest-health"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/3953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=3953"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/3953\/revisions"}],"predecessor-version":[{"id":3954,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/3953\/revisions\/3954"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=3953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=3953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=3953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}