{"id":16170,"date":"2018-01-10T20:00:15","date_gmt":"2018-01-10T19:00:15","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=16170"},"modified":"2018-01-07T18:48:12","modified_gmt":"2018-01-07T17:48:12","slug":"le-sahel-reverdit","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/le-sahel-reverdit\/","title":{"rendered":"Le Sahel reverdit"},"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>Selon une \u00e9tude publi\u00e9e en juin 2015 dans la revue Nature Climate Change [1] le Sahel reverdit gr\u00e2ce \u00e0 une pluviosit\u00e9 en augmentation depuis les ann\u00e9es 80.<\/p>\n<p>La pluviom\u00e9trie \u00e0 l\u2019origine de ce verdissement<br \/>\nIl y a un consensus sur le fait que le Sahel gagne en couverture v\u00e9g\u00e9tale par rapport aux ann\u00e9es 1980. Ce verdissement est d\u00fb aux \u00e0 la pluviom\u00e9trie comme le montre le graphique ci-dessous : la pluviom\u00e9trie qui avait nettement r\u00e9gress\u00e9 entre 1950 et 1980 a recommenc\u00e9 \u00e0 augmenter depuis 1985 jusqu\u2019\u00e0 nos jours retrouvant le niveau des ann\u00e9es 1910-1920.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16171\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/le-sahel-reverdit\/24-sahel-recovery-500\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/12\/24-sahel-recovery-500.jpg?fit=500%2C256&amp;ssl=1\" data-orig-size=\"500,256\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"24-sahel-recovery-500\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/12\/24-sahel-recovery-500.jpg?fit=500%2C256&amp;ssl=1\" class=\"alignnone size-full wp-image-16171\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/12\/24-sahel-recovery-500.jpg?resize=500%2C256\" alt=\"\" width=\"500\" height=\"256\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/12\/24-sahel-recovery-500.jpg?w=500&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/12\/24-sahel-recovery-500.jpg?resize=300%2C154&amp;ssl=1 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Il est piquant de constater que l\u2019\u00e9tude de Nature Climate Change ne conc\u00e8de ce verdissement qu\u2019en l\u2019attribuant au r\u00e9chauffement climatique anthropique ! Selon ses auteurs en effet, la reprise des pr\u00e9cipitations au Sahel est due \u00e0 hausse continue des \u00e9missions des gaz \u00e0 effet de serre. Rowan Sutton, professeur au Centre national pour les sciences atmosph\u00e9riques \u00e0 l\u2019Universit\u00e9 de Reading et co-auteur l\u2019indique en ces termes :<\/p>\n<p>Les quantit\u00e9s de pr\u00e9cipitations ont r\u00e9cup\u00e9r\u00e9 sensiblement. Ce fut une surprise que l\u2019augmentation de l\u2019effet de serre semble avoir \u00e9t\u00e9 le facteur dominant.<\/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>L\u2019am\u00e9lioration des pratiques agricoles pourrait accentuer cette tendance<br \/>\nCertains auteurs soutiennent que bien que les pr\u00e9cipitations aient \u00e9videmment augment\u00e9 au cours des trois derni\u00e8res d\u00e9cennies, ce verdissement n\u2019aurait pas pu \u00eatre obtenu sans un changement dans l\u2019utilisation des terres et des pratiques agricoles. Une \u00e9tude publi\u00e9e dans la revue Land attribue une partie du verdissement au d\u00e9placement de certaines esp\u00e8ces d\u2019arbres vers une flore plus tol\u00e9rante aux conditions arides. Les agriculteurs sah\u00e9liens au Burkina Faso et au Niger ont modifi\u00e9 ing\u00e9nieusement leurs pratiques d\u2019agro foresterie, d\u2019eau et de gestion des sols pour obtenir plus de cultures. C\u2019est aussi l\u2019avis du \u00ab Stockholm Resilience Centre \u00bb [2] citant une \u00e9tude selon laquelle les agriculteurs ont g\u00e9r\u00e9 leurs terres d\u2019une mani\u00e8re qui am\u00e9liorent leur productivit\u00e9.<\/p>\n<p><a href=\"https:\/\/www.climato-realistes.fr\/le-sahel-reverdit\/#_ftnref1\" name=\"_ftn53\">[1]<\/a>&nbsp;Nature Climate Change (01 June 2015) : \u00ab&nbsp;Dominant role of greenhouse-gas forcing in the recovery of Sahel rainfall&nbsp;\u00bb<\/p>\n<p><a href=\"https:\/\/www.climato-realistes.fr\/le-sahel-reverdit\/#_ftnref55\" name=\"_ftn55\">[2]<\/a>&nbsp;Stockholm Resilience Centre<em>&nbsp;: \u00ab&nbsp;<\/em>A tree paradox in a greener Sahel&nbsp;\u00bb<\/p>\n<p>source :&nbsp;<a href=\"https:\/\/www.climato-realistes.fr\/le-sahel-reverdit\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.climato-realistes.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"16170\">(1344)<\/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>Selon une \u00e9tude publi\u00e9e en juin 2015 dans la revue Nature Climate Change [1] le Sahel reverdit gr\u00e2ce \u00e0 une&#8230;<\/p>\n","protected":false},"author":1,"featured_media":12203,"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_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 Sahel reverdit @laterredufutur","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},"jetpack_post_was_ever_published":false},"categories":[20],"tags":[196,192,6579,637],"class_list":["post-16170","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climat","tag-afrique","tag-pluviometrie","tag-sahara-reverdit","tag-sahel","wpcat-20-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/05\/Sahel_forest_near_Kayes_Mali.jpg?fit=1280%2C960&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-4cO","jetpack-related-posts":[{"id":514,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-sahara-reverdit-iii\/","url_meta":{"origin":16170,"position":0},"title":"Le Sahara reverdit III","author":"Admin","date":"6 septembre 2011","format":false,"excerpt":"Depuis 2004, nous constations un reverdissement du sahel \u00e0 contrario de tous les dires m\u00e9diatiques. Ainsi certains scientifiques nous apportaient \u00e0 l'\u00e9poque cette recherche : \"Le Sahel reverdit\u00a0! Ce n'est pas une incantation, mais une tendance bel et bien observ\u00e9e par des chercheurs qui ont d\u00e9pouill\u00e9 quinze ans de photographies\u2026","rel":"","context":"Dans &quot;Ecologie&quot;","block_context":{"text":"Ecologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/ecologie\/"},"img":{"alt_text":"sahel reverdissement","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/09\/sahel-reverdissement.jpg?fit=370%2C284&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2628,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-sahara-reverdit\/","url_meta":{"origin":16170,"position":1},"title":"Le Sahara reverdit","author":"Admin","date":"27 d\u00e9cembre 2004","format":false,"excerpt":"Le Sahel reverdit\u00a0! Ce n'est pas une incantation, mais une tendance bel et bien observ\u00e9e par des chercheurs qui ont d\u00e9pouill\u00e9 quinze ans de photographies satellites de la r\u00e9gion. Ces g\u00e9ographes europ\u00e9ens affirment que les terres cultivables commencent \u00e0 reprendre progressivement du terrain. Une bonne nouvelle\u00a0! D\u00e9cid\u00e9ment le changement climatique\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/maro0588.jpeg?fit=512%2C341&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":12201,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-deserts-africains-reverdissent\/","url_meta":{"origin":16170,"position":2},"title":"Les d\u00e9serts africains reverdissent","author":"Admin","date":"12 mai 2016","format":false,"excerpt":"Une nouvelle \u00e9tude de l'Arizona State University a confirm\u00e9 que les d\u00e9serts Africains reverdissaient. Comme cela a \u00e9t\u00e9\u00a0rapport\u00e9 en septembre 2015 par\u00a0Breitbart, contrairement \u00e0 tout ce que les alarmistes nous ont dit, les d\u00e9serts de l' Afrique connaissent un\u00a0\u00abreverdissement\u00bb de fa\u00e7on constante depuis les s\u00e9cheresses des ann\u00e9es 1970 et 1980\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/05\/elephant-verdure.jpg?fit=640%2C427&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/05\/elephant-verdure.jpg?fit=640%2C427&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/05\/elephant-verdure.jpg?fit=640%2C427&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":11976,"url":"https:\/\/www.laterredufutur.com\/accueil\/lexces-de-co2-dans-latmosphere-fertilise-les-deserts\/","url_meta":{"origin":16170,"position":3},"title":"L&rsquo;exc\u00e8s de CO2 dans l\u2019atmosph\u00e8re fertilise les d\u00e9serts","author":"Admin","date":"26 avril 2016","format":false,"excerpt":"En 2013,\u00a0et publi\u00e9e dans la revue Geophysical Research Letters, une \u00e9tude australienne avait mis en corr\u00e9lation, gr\u00e2ce \u00e0 des donn\u00e9es satellitaires, une augmentation du couvert v\u00e9g\u00e9tal des zones arides de la plan\u00e8te avec le surcroit de CO2 observ\u00e9 dans l\u2019air ces 30 derni\u00e8res ann\u00e9es. Selon cette\u00a0\u00e9tude men\u00e9e par la Commonwealth\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"sahel reverdissement","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/09\/sahel-reverdissement.jpg?fit=370%2C284&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":908,"url":"https:\/\/www.laterredufutur.com\/accueil\/lafrique-reverdit-iv\/","url_meta":{"origin":16170,"position":4},"title":"L&rsquo;Afrique reverdit IV","author":"Admin","date":"27 mai 2012","format":false,"excerpt":"Depuis 2004, o\u00f9 nous avions vu que sur la Terre du Futur, des indices nous d\u00e9montraient un reverdissement de l'Afrique, voici qu'au-del\u00e0 des catastrophes naturelles attribu\u00e9es au r\u00e9chauffement climatique se profile une inexorable fatalit\u00e9 faite de d\u00e9sertification, de s\u00e9cheresse, de pauvret\u00e9 et de mort. Mais il se pourrait que ce\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"pluie afrique","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/05\/pluie-afrique.jpg?fit=940%2C705&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/05\/pluie-afrique.jpg?fit=940%2C705&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/05\/pluie-afrique.jpg?fit=940%2C705&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/05\/pluie-afrique.jpg?fit=940%2C705&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":7742,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-grande-muraille-verte-du-sahara-pour-reverdir-le-sahara\/","url_meta":{"origin":16170,"position":5},"title":"La Grande muraille verte du Sahara pour reverdir le Sahara","author":"Admin","date":"6 ao\u00fbt 2015","format":false,"excerpt":"A l'heure o\u00f9 l'on parle de la plan\u00e8te Mars, voire de la terraformer, il serait bon de se poser les vraies questions pour notre propre plan\u00e8te. De Dakar \u00e0 Djibouti, une muraille verte pourquoi faire ? 11 pays africains s\u2019engagent pour freiner l\u2019avanc\u00e9e du d\u00e9sert et de la d\u00e9sertification au\u2026","rel":"","context":"Dans &quot;Solutions&quot;","block_context":{"text":"Solutions","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/solutions\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/trace-grande-muraille-verte-sahara.jpg?fit=416%2C257&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=16170"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16170\/revisions"}],"predecessor-version":[{"id":16172,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16170\/revisions\/16172"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/12203"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=16170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=16170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=16170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}