{"id":92120,"date":"2025-11-30T12:08:41","date_gmt":"2025-11-30T12:08:41","guid":{"rendered":"https:\/\/www.africa-press.net\/niger\/politique\/forets-africaines-fin-du-role-de-puits-de-carbone"},"modified":"2025-11-30T12:22:17","modified_gmt":"2025-11-30T12:22:17","slug":"forets-africaines-fin-du-role-de-puits-de-carbone","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/niger\/economie\/forets-africaines-fin-du-role-de-puits-de-carbone","title":{"rendered":"Fore\u0302Ts Africaines: Fin du Ro\u0302Le de Puits de Carbone"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Niger. <\/strong><\/span>Une e\u0301tude re\u0301ve\u0300le que l\u2019Afrique est passe\u0301e d\u2019un puits de carbone a\u0300 une source nette en raison de la de\u0301forestationLes fore\u0302ts et zones boise\u0301es d\u2019Afrique, longtemps conside\u0301re\u0301es comme un puits de carbone majeur, sont de\u0301sormais devenues une source nette de carbone en raison de la de\u0301forestation et de la de\u0301gradation forestie\u0300re, selon une nouvelle e\u0301tude publie\u0301e vendredi dans Scientific Reports, une revue du groupe Nature spe\u0301cialise\u0301e dans les sciences naturelles.<\/p>\n<p>Les chercheurs ont utilise\u0301 des donne\u0301es satellitaires haute re\u0301solution, corrobore\u0301es par des mesures de terrain, pour cartographier l\u2019e\u0301volution de la biomasse ligneuse ae\u0301rienne sur l\u2019ensemble du continent entre 2007 et 2017.<\/p>\n<p>Selon l\u2019e\u0301tude, l\u2019Afrique enregistrait un gain annuel de 439 millions de tonnes de biomasse entre 2007 et 2010, avant de subir des pertes estime\u0301es a\u0300 132 millions de tonnes par an entre 2010 et 2015, puis 41 millions de tonnes par an entre 2015 et 2017.<\/p>\n<p>Les pertes ont e\u0301te\u0301 particulie\u0300rement marque\u0301es dans les fore\u0302ts tropicales humides, notamment en Re\u0301publique de\u0301mocratique du Congo, a\u0300 Madagascar et dans plusieurs re\u0301gions d\u2019Afrique de l\u2019Ouest.<\/p>\n<p>Pour les auteurs, le basculement du continent d\u2019un puits de carbone a\u0300 une source nette souligne l\u2019urgence de renforcer les politiques de conservation et les initiatives de restauration forestie\u0300re.<\/p>\n<p>Les gains observe\u0301s dans les zones de savane \u2014 probablement lie\u0301s a\u0300 la progression des arbustes \u2014 ont partiellement compense\u0301 les pertes, sans toutefois inverser la tendance.<\/p>\n<p>Historiquement, les fore\u0302ts africaines absorbaient environ 20 % des e\u0301missions mondiales de carbone gra\u0302ce a\u0300 la photosynthe\u0300se.<\/p>\n<p>Les nouvelles conclusions indiquent que la poursuite de la perte forestie\u0300re pourrait compromettre les objectifs climatiques internationaux, notamment ceux pre\u0301vus par l\u2019Accord de Paris.<\/p>\n<p>Les auteurs appellent a\u0300 des engagements plus ambitieux dans la re\u0301vision en cours des Contributions de\u0301termine\u0301es au niveau national (CDN), ainsi qu\u2019a\u0300 des efforts mondiaux renforce\u0301s pour mettre fin a\u0300 la de\u0301forestation, conforme\u0301ment a\u0300 la De\u0301claration des dirigeants de Glasgow.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <span style=\"color: #ff6600\">Niger<\/span>, suivez <span style=\"color: #ff6600\">Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Niger. Une e\u0301tude re\u0301ve\u0300le que l\u2019Afrique est passe\u0301e d\u2019un puits de carbone a\u0300 une source nette en raison de la de\u0301forestationLes fore\u0302ts et zones boise\u0301es d\u2019Afrique, longtemps conside\u0301re\u0301es comme un puits de carbone majeur, sont de\u0301sormais devenues une source nette de carbone en raison de la de\u0301forestation et de la de\u0301gradation forestie\u0300re, selon [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":92119,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,10],"tags":[56,754,2426,29],"class_list":["post-92120","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-economie","category-toutes-les-actualites","tag-afrique","tag-carbone","tag-forets","tag-niger"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Fore\u0302Ts Africaines: Fin du Ro\u0302Le de Puits de Carbone - 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