\u0110\u1ea1i B\u00ecnh nguy\u00ean, t\u1eebng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Sa m\u1ea1c M\u1ef9 V\u0129 \u0111\u1ea1i, t\u1eebng l\u00e0 m\u1ed9t v\u00f9ng r\u1ed9ng l\u1edbn v\u1edbi nh\u1eefng c\u1ed3n c\u00e1t di \u0111\u1ed9ng v\u00e0 c\u00e1t tr\u1ea3i d\u00e0i. Tuy nhi\u00ean, trong 150 n\u0103m qua, th\u1ea3m th\u1ef1c v\u1eadt \u0111\u00e3 \u1ed5n \u0111\u1ecbnh nh\u1eefng c\u1ed3n c\u00e1t n\u00e0y, t\u1ea1o n\u00ean c\u1ea3nh quan n\u00f4ng nghi\u1ec7p m\u00e0 ch\u00fang ta th\u1ea5y ng\u00e0y nay.<\/p>\n\n
Nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y c\u1ee7a nh\u00e0 \u0111\u1ecba ch\u1ea5t Daniel Muhs thu\u1ed9c C\u1ee5c Kh\u1ea3o s\u00e1t \u0110\u1ecba ch\u1ea5t Hoa K\u1ef3 v\u00e0 c\u00e1c c\u1ed9ng s\u1ef1 c\u1ee7a \u00f4ng \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ed3n c\u00e1t \u0111\u00e3 ph\u1ed5 bi\u1ebfn h\u01a1n nhi\u1ec1u trong 1.000 n\u0103m qua so v\u1edbi \u01b0\u1edbc t\u00ednh tr\u01b0\u1edbc \u0111\u00e2y. Vi\u1ec7c x\u00e1c \u0111\u1ecbnh ni\u00ean \u0111\u1ea1i b\u1eb1ng carbon c\u1ee7a \u0111\u1ea5t, x\u01b0\u01a1ng v\u00e0 hi\u1ec7n v\u1eadt \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c s\u1ef1 d\u1ecbch chuy\u1ec3n \u0111\u00e1ng k\u1ec3 c\u1ee7a c\u1ed3n c\u00e1t trong giai \u0111o\u1ea1n n\u00e0y, bao g\u1ed3m c\u1ea3 trong th\u1ebf k\u1ef7 tr\u01b0\u1edbc v\u00e0 trong \u0111\u1ee3t h\u1ea1n h\u00e1n v\u00e0o nh\u1eefng n\u0103m 1930.<\/p>\n\n
C\u1ed3n c\u00e1t c\u1ea7n hai y\u1ebfu t\u1ed1 ch\u00ednh \u0111\u1ec3 tr\u1edf n\u00ean ho\u1ea1t \u0111\u1ed9ng: thi\u1ebfu th\u1ea3m th\u1ef1c v\u1eadt \u0111\u1ec3 gi\u1eef ch\u00fang c\u1ed1 \u0111\u1ecbnh v\u00e0 gi\u00f3 m\u1ea1nh \u0111\u1ec3 v\u1eadn chuy\u1ec3n c\u00e1t. H\u1ea1n h\u00e1n l\u00e0 \u0111\u1ed9ng l\u1ef1c ch\u00ednh khi\u1ebfn c\u1ed3n c\u00e1t ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i v\u00ec n\u00f3 l\u00e0m suy y\u1ebfu th\u1ea3m th\u1ef1c v\u1eadt v\u00e0 khi\u1ebfn c\u00e1t tr\u01a1 tr\u1ee5i ti\u1ebfp x\u00fac v\u1edbi gi\u00f3.<\/p>\n\n
C\u00e1c m\u00f4 h\u00ecnh bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu d\u1ef1 \u0111o\u00e1n r\u1eb1ng t\u1ea7n su\u1ea5t v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 h\u1ea1n h\u00e1n \u1edf \u0110\u1ea1i B\u00ecnh nguy\u00ean s\u1ebd gia t\u0103ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u1ed3n c\u00e1t ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i tr\u00ean di\u1ec7n r\u1ed9ng, v\u1edbi nh\u1eefng h\u1eadu qu\u1ea3 c\u00f3 kh\u1ea3 n\u0103ng t\u00e0n ph\u00e1.<\/p>\n\n
Nh\u1eefng c\u1ed3n c\u00e1t \u0111\u01b0\u1ee3c t\u00e1i ho\u1ea1t \u0111\u1ed9ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng v\u00e0 n\u00f4ng nghi\u1ec7p. Nh\u01b0 Muhs l\u01b0u \u00fd, “N\u1ebfu c\u00e1t b\u1eaft \u0111\u1ea7u di chuy\u1ec3n, th\u00ec Xa l\u1ed9 Li\u00ean ti\u1ec3u bang n\u00e0y s\u1ebd bi\u1ebfn m\u1ea5t.” C\u1ed3n c\u00e1t c\u00f3 th\u1ec3 ch\u00f4n v\u00f9i h\u00e0ng r\u00e0o, \u0111\u01b0\u1eddng s\u00e1, \u0111\u1ed3ng c\u1ecf v\u00e0 th\u1eadm ch\u00ed c\u1ea3 th\u1ecb tr\u1ea5n.<\/p>\n\n
Ngo\u00e0i ra, s\u1ef1 ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i c\u1ee7a c\u1ed3n c\u00e1t c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 c\u00e1c h\u1ec7 sinh th\u00e1i v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng c\u1ee7a \u0111\u1ed9ng v\u1eadt hoang d\u00e3. V\u00ed d\u1ee5, \u0110\u1ed3i c\u00e1t Nebraska l\u00e0 n\u01a1i c\u00f3 m\u1ed9t h\u1ec7 sinh th\u00e1i \u0111\u1ed9c \u0111\u00e1o \u0111\u00e3 th\u00edch nghi v\u1edbi s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a nh\u1eefng c\u1ed3n c\u00e1t di \u0111\u1ed9ng. S\u1ef1 ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i c\u1ee7a c\u1ed3n c\u00e1t c\u00f3 th\u1ec3 \u0111e d\u1ecda h\u1ec7 sinh th\u00e1i n\u00e0y v\u00e0 c\u00e1c lo\u00e0i ph\u1ee5 thu\u1ed9c v\u00e0o n\u00f3.<\/p>\n\n
C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111ang theo d\u00f5i ch\u1eb7t ch\u1ebd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ed3n c\u00e1t \u1edf \u0110\u1ea1i B\u00ecnh nguy\u00ean \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 r\u1ee7i ro t\u00e1i ho\u1ea1t \u0111\u1ed9ng. H\u1ecd \u0111ang s\u1eed d\u1ee5ng nhi\u1ec1u k\u1ef9 thu\u1eadt, bao g\u1ed3m h\u00ecnh \u1ea3nh v\u1ec7 tinh, kh\u1ea3o s\u00e1t m\u1eb7t \u0111\u1ea5t v\u00e0 x\u00e1c \u0111\u1ecbnh ni\u00ean \u0111\u1ea1i b\u1eb1ng carbon \u0111\u1ec3 theo d\u00f5i chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u1ed3n c\u00e1t v\u00e0 x\u00e1c \u0111\u1ecbnh nh\u1eefng khu v\u1ef1c d\u1ec5 t\u00e1i ho\u1ea1t \u0111\u1ed9ng nh\u1ea5t.<\/p>\n\n
C\u00e1c chi\u1ebfn l\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u c\u0169ng \u0111ang \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 l\u00e0m gi\u1ea3m nguy c\u01a1 c\u1ed3n c\u00e1t ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i. C\u00e1c chi\u1ebfn l\u01b0\u1ee3c n\u00e0y bao g\u1ed3m tr\u1ed3ng th\u1ea3m th\u1ef1c v\u1eadt \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh c\u1ed3n c\u00e1t, x\u00e2y d\u1ef1ng t\u01b0\u1eddng ch\u1eafn gi\u00f3 v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c k\u1ebf ho\u1ea1ch qu\u1ea3n l\u00fd h\u1ea1n h\u00e1n.<\/p>\n\n
Ti\u1ec1m n\u0103ng t\u00e1i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ed3n c\u00e1t \u1edf \u0110\u1ea1i B\u00ecnh nguy\u00ean l\u00e0 m\u1ed9t m\u1ed1i \u0111e d\u1ecda nghi\u00eam tr\u1ecdng \u0111\u00f2i h\u1ecfi ph\u1ea3i theo d\u00f5i c\u1ea9n th\u1eadn v\u00e0 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u. B\u1eb1ng c\u00e1ch hi\u1ec3u \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n v\u00e0 h\u1eadu qu\u1ea3 c\u1ee7a s\u1ef1 t\u00e1i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ed3n c\u00e1t, ch\u00fang ta c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u1ed9ng \u0111\u1ed3ng v\u00e0 h\u1ec7 sinh th\u00e1i c\u1ee7a m\u00ecnh kh\u1ecfi m\u1ed1i nguy hi\u1ec3m t\u1ef1 nhi\u00ean n\u00e0y.<\/p>","protected":false},"excerpt":{"rendered":"
Ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i c\u1ee7a c\u1ed3n c\u00e1t: M\u1ed1i \u0111e d\u1ecda c\u1eadn k\u1ec1 t\u1ea1i \u0110\u1ea1i B\u00ecnh nguy\u00ean Ho\u1ea1t \u0111\u1ed9ng l\u1ecbch s\u1eed c\u1ee7a c\u1ed3n c\u00e1t \u0110\u1ea1i B\u00ecnh nguy\u00ean, t\u1eebng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[212],"tags":[34,2682,207,18338,2990,219],"class_list":["post-13614","post","type-post","status-publish","format-standard","hentry","category-earth-science","tag-climate-change","tag-great-plains","tag-geology","tag-dunes","tag-drought","tag-ecology"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/13614","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=13614"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/13614\/revisions"}],"predecessor-version":[{"id":13615,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/13614\/revisions\/13615"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=13614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=13614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=13614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}