{"id":21066,"date":"2020-07-27T17:00:20","date_gmt":"2020-07-27T15:00:20","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=21066"},"modified":"2020-07-13T10:30:22","modified_gmt":"2020-07-13T08:30:22","slug":"le-tibet-il-y-a-44-millions-dannees-avait-un-climat-tropical","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/le-tibet-il-y-a-44-millions-dannees-avait-un-climat-tropical\/","title":{"rendered":"Le Tibet il y a 44 millions d&rsquo;ann\u00e9es avait un climat tropical"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>Dans le pass\u00e9, la r\u00e9gion sud-est du plateau Qinghai-Tibet a subi une s\u00e9rie de grands changements \u00e0 la fois en termes du climat et de la v\u00e9g\u00e9tation, se transformant d&rsquo;un d\u00e9sert en une for\u00eat luxuriante.<\/p>\n<p>Des chercheurs chinois ont d\u00e9couvert que dans le pass\u00e9, la r\u00e9gion sud-est du plateau Qinghai-Tibet a subi une s\u00e9rie de grands changements \u00e0 la fois en termes du climat et de la v\u00e9g\u00e9tation, passant d&rsquo;un d\u00e9sert \u00e0 une for\u00eat luxuriante en raison d&rsquo;un changement tectonique survenu il y a des 44 millions d&rsquo;ann\u00e9es. La recherche, d\u00e9velopp\u00e9e par l&rsquo; Institut de recherche sur le plateau tib\u00e9tain de l&rsquo;Acad\u00e9mie chinoise des sciences, a r\u00e9cemment \u00e9t\u00e9 publi\u00e9e dans la revue Earth &amp; Planetary Science Letters.<\/p>\n<p>Selon l&rsquo;article, l&rsquo;altitude de la r\u00e9gion a augment\u00e9 rapidement de 700 \u00e0 3 800 m\u00e8tres au-dessus du niveau de la mer en raison du processus de subduction nord du sous-continent indien, entra\u00eenant une s\u00e9rie de changements climatiques et locaux de la v\u00e9g\u00e9tation. Au cours des exp\u00e9ditions men\u00e9es dans un bassin situ\u00e9 au sud-est du plateau, les chercheurs ont d\u00e9couvert deux couches s\u00e9dimentaires diff\u00e9rentes.<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p>La partie inf\u00e9rieure \u00e9tait principalement constitu\u00e9e de sable et de d\u00e9p\u00f4ts fluviaux form\u00e9s dans un climat aride, tandis que la partie sup\u00e9rieure \u00e9tait principalement compos\u00e9e de d\u00e9p\u00f4ts lacustres g\u00e9n\u00e9r\u00e9s dans un environnement humide. Selon Ding Lin, indiqu\u00e9 comme l&rsquo;auteur correspondant de l&rsquo;article, cette zone \u00e9tait autrefois occup\u00e9e par un d\u00e9sert chaud, sec et plac\u00e9 \u00e0 basse altitude, o\u00f9 poussait une v\u00e9g\u00e9tation subtropicale. En raison de la pouss\u00e9e vers le nord du sous-continent indien, le sol a commenc\u00e9 \u00e0 monter et les moussons ont affect\u00e9 la r\u00e9gion avec leurs pr\u00e9cipitations, ce qui a rendu le climat plus humide et plus frais. Un certain nombre de for\u00eats en montagne ont vu le jour en raison du changement climatique dans la r\u00e9gion, o\u00f9 les conditions environnementales \u00e9taient similaires \u00e0 aujourd&rsquo;hui, a expliqu\u00e9 Ding.<\/p>\n<p>Adaptation <a href=\"https:\/\/www.laterredufutur.com\/accueil\/\" target=\"_blank\" rel=\"noopener noreferrer\">Terra Projects<\/a><\/p>\n<p>source : <a href=\"http:\/\/www.meteoweb.eu\/2020\/07\/meteo-il-tibet-clima-tropicale\/1452614\/\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/www.meteoweb.eu\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"21066\">(377)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Dans le pass\u00e9, la r\u00e9gion sud-est du plateau Qinghai-Tibet a subi une s\u00e9rie de grands changements \u00e0 la fois en&#8230;<\/p>\n","protected":false},"author":1,"featured_media":21067,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Le #Tibet il y a 44 millions d'ann\u00e9es avait un #climat tropical @laterredufutur.com Terra Projects","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[20],"tags":[537,41,7400,2780,4487],"class_list":["post-21066","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climat","tag-chine","tag-climat","tag-foret-tropicale","tag-montagnes","tag-tibet","wpcat-20-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/07\/Tibet.jpg?fit=1200%2C803&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-5tM","jetpack-related-posts":[{"id":20215,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-ingenieurs-chinois-planifient-un-tunnel-de-1000-km-pour-faire-fleurir-le-desert-du-xinjiang\/","url_meta":{"origin":21066,"position":0},"title":"Des ing\u00e9nieurs chinois planifient un tunnel de 1000 km pour faire fleurir le d\u00e9sert du Xinjiang","author":"Admin","date":"30 d\u00e9cembre 2019","format":false,"excerpt":"Les ing\u00e9nieurs chinois testent des techniques qui pourraient \u00eatre utilis\u00e9es pour construire un tunnel de 1 000 km - le plus long au monde - permettant d'acheminer de l'eau du Tibet au Xinjiang, indiquent des experts du projet. Le tunnel propos\u00e9, qui descendrait du plus haut plateau du monde en\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/desert-xinjiang.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/desert-xinjiang.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/desert-xinjiang.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/desert-xinjiang.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/11\/desert-xinjiang.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":7352,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-plus-anciennes-traces-de-la-mousson-asiatique-remontent-a-40-millions-dannees\/","url_meta":{"origin":21066,"position":1},"title":"Les plus anciennes traces de la mousson asiatique remontent \u00e0 40 millions d\u2019ann\u00e9es !","author":"Admin","date":"30 juin 2015","format":false,"excerpt":"La mousson est un ph\u00e9nom\u00e8ne climatique tr\u00e8s actif aux basses latitudes, caract\u00e9ris\u00e9e\u00a0 par l'inversion saisonni\u00e8re des vents aux marges des continents et par l'apport en \u00e9t\u00e9 d'importantes pr\u00e9cipitations d'origines oc\u00e9aniques. Amplifi\u00e9e par les caract\u00e9ristiques du relief de la cha\u00eene himalayenne et du Plateau Tib\u00e9tain, qui favorisent la mise en place\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/himalaya-mousson.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/himalaya-mousson.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/himalaya-mousson.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/himalaya-mousson.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/himalaya-mousson.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":16489,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-chine-veut-creer-une-zone-pluvieuse-de-la-taille-de-la-mongolie-pour-mettre-fin-a-sa-secheresse\/","url_meta":{"origin":21066,"position":2},"title":"La Chine veut cr\u00e9er une zone pluvieuse de la taille de la Mongolie pour mettre fin \u00e0 sa s\u00e9cheresse","author":"Admin","date":"10 avril 2018","format":false,"excerpt":"La China Aerospace Science and Technology Corporation, une soci\u00e9t\u00e9 spatiale chinoise, teste actuellement le plus vaste projet du monde d\u2019ensemencement de nuages pour augmenter la pluviom\u00e9trie du plateau tib\u00e9tain. Cette r\u00e9gion rec\u00e8le en effet la plus grosse r\u00e9serve d\u2019eau douce de toute l\u2019Asie, et pour cette raison, on la surnomme\u2026","rel":"","context":"Dans &quot;M\u00e9t\u00e9orologie&quot;","block_context":{"text":"M\u00e9t\u00e9orologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/meteorologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/pluie-chine.jpg?fit=700%2C505&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/pluie-chine.jpg?fit=700%2C505&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/pluie-chine.jpg?fit=700%2C505&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/04\/pluie-chine.jpg?fit=700%2C505&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":27915,"url":"https:\/\/www.laterredufutur.com\/accueil\/lamazonie-etait-une-savane-il-y-a-6000-ans\/","url_meta":{"origin":21066,"position":3},"title":"L&rsquo;Amazonie \u00e9tait une savane il y a 6000 ans ?","author":"Admin","date":"4 avril 2026","format":false,"excerpt":"L\u2019Amazonie \u00e9tait-elle une savane il y a 6 000 ans ? L\u2019id\u00e9e selon laquelle l\u2019Amazonie aurait \u00e9t\u00e9 une vaste savane il y a environ 6 000 ans circule largement, notamment sur les r\u00e9seaux sociaux. 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