{"id":59974,"date":"2024-11-13T09:28:01","date_gmt":"2024-11-13T07:28:01","guid":{"rendered":"https:\/\/lesvolcansnews.net\/?p=59974"},"modified":"2024-11-13T09:28:01","modified_gmt":"2024-11-13T07:28:01","slug":"science-le-riz-contribue-au-rechauffement-climatique","status":"publish","type":"post","link":"https:\/\/lesvolcansnews.net\/?p=59974","title":{"rendered":"Science : le riz contribue au r\u00e9chauffement climatique"},"content":{"rendered":"\n<p><strong>Tenant compte des r\u00e9v\u00e9lations syst\u00e9matiquement en \u00e9quation diff\u00e9rentielle contenues dans une publication scientifique du site &#8220;Challenges des \u00e9conomistes&#8221;. Il se r\u00e9v\u00e8le que le riz contribue au r\u00e9chauffement climatique<\/strong>.<br><br>En privant les sols d&#8217;oxyg\u00e8ne, la culture en rizi\u00e8re favorise le d\u00e9veloppement de bact\u00e9ries \u00e9mettrices de m\u00e9thane. Alors que, dans le secteur alimentaire le riz est le plus gros \u00e9metteur de gaz \u00e0 effet de serre apr\u00e8s la viande de b\u0153uf. Son empreinte carbone est comparable \u00e0 celle de l&#8217;aviation. Bref, manger du riz est mauvais pour le climat mais aussi, semble-t-il, pour la sant\u00e9.<br><br>Il est r\u00e9v\u00e9l\u00e9 que, le riz est la principale nourriture de plus de la moiti\u00e9 de l&#8217;humanit\u00e9. Mais les rendements ne progressent pas. Pire, la culture de cette c\u00e9r\u00e9ale, qui \u00e9met du m\u00e9thane, contribue au r\u00e9chauffement climatique et \u00e0 l&#8217;explosion du diab\u00e8te. Son empreinte carbone est similaire \u00e0 celle de l&#8217;aviation. D&#8217;o\u00f9 l&#8217;urgence de cultiver d&#8217;autres c\u00e9r\u00e9ales s&#8217;impose.<br><br>Pour le savoir, les scientifiques du Cirad ont simul\u00e9 le climat que nous devrions connaitre d\u2019ici 30 ans dans une serre \u00e0 la pointe de la technologie. R\u00e9sultat : selon la vari\u00e9t\u00e9 de riz, la photosynth\u00e8se et la production sont plus ou moins boost\u00e9es par une augmentation de CO2 atmosph\u00e9rique.<br><br>La morphologie, notamment au travers du rapport feuille\/panicule, pourrait d\u00e9terminer la capacit\u00e9 de la plante \u00e0 mieux profiter d&#8217;une hausse de CO2. <br><br>Des recherches pr\u00e9cieuses pour orienter les programmes de s\u00e9lection vari\u00e9tale de demain, \u00e0 d\u00e9couvrir en vid\u00e9o alors que le sommet Action Climat de l\u2019ONU d\u00e9marre lundi.<br><br>L&#8217;urbanisation et l&#8217;industrialisation ont rar\u00e9fi\u00e9 la main d&#8217;\u0153uvre et les terres agricoles. L&#8217;abus de pesticides, d&#8217;engrais et d&#8217;irrigation ont empoisonn\u00e9 et \u00e9puis\u00e9 les sols et les nappes phr\u00e9atiques.<br><br>Le changement climatique est venu s\u2019ajouter \u00e0 d\u2019autres probl\u00e8mes existants pouvant agir de cause \u00e0 effet : l\u2019ins\u00e9curit\u00e9, l\u2019impraticabilit\u00e9 des routes de desserte agricole, la pauvret\u00e9, la croissance d\u00e9mographique galopante entrainant ainsi une comp\u00e9tition d\u2019acc\u00e8s aux ressources, ainsi que l\u2019urbanisation rapide accompagn\u00e9e de la d\u00e9forestation. Par ailleurs, la pand\u00e9mie de coronavirus.<br><br>Le changement climatique qui r\u00e9sulte de l\u2019augmentation des gaz \u00e0 effet de serre et donc de la temp\u00e9rature plan\u00e9taire constitue une menace pour l\u2019agriculture familiale. Car celle-ci d\u00e9pend directement des facteurs climatiques, notamment du rayonnement du soleil, de la pluie, de la temp\u00e9rature et de la teneur en gaz carbonique. Ce changement est per\u00e7u par des agriculteurs \u00e0 travers divers \u00e9v\u00e8nements susceptibles de produire des effets n\u00e9gatifs sur les exploitations<br><br><strong>PAUL ZA\u00cfDI<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tenant compte des r\u00e9v\u00e9lations syst\u00e9matiquement en \u00e9quation diff\u00e9rentielle contenues dans une publication scientifique du site &#8220;Challenges des \u00e9conomistes&#8221;. Il se r\u00e9v\u00e8le que le riz contribue au r\u00e9chauffement climatique. En privant<\/p>\n","protected":false},"author":14,"featured_media":59973,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-59974","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agriculture"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Science : le riz contribue au r\u00e9chauffement climatique - LES VOLCANS NEWS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lesvolcansnews.net\/?p=59974\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Science : le riz contribue au r\u00e9chauffement climatique - LES VOLCANS NEWS\" \/>\n<meta property=\"og:description\" content=\"Tenant compte des r\u00e9v\u00e9lations syst\u00e9matiquement en \u00e9quation diff\u00e9rentielle contenues dans une publication scientifique du site &#8220;Challenges des \u00e9conomistes&#8221;. 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