{"id":40764,"date":"2024-03-11T15:28:16","date_gmt":"2024-03-11T14:28:16","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=40764"},"modified":"2024-03-12T10:24:56","modified_gmt":"2024-03-12T09:24:56","slug":"ambiance-forestiere-et-climat-planetaire","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/ambiance-forestiere-et-climat-planetaire\/","title":{"rendered":"Ambiance foresti\u00e8re et climat plan\u00e9taire"},"content":{"rendered":"<p>Les chercheurs allemands et roumains \u00e9tudient le climat des for\u00eats de h\u00eatres et de ch\u00eanes et ont constat\u00e9 que les h\u00eatraies permettent une meilleure protection contre le r\u00e9chauffement climatique. En effet, les for\u00eats domin\u00e9es par le h\u00eatre se caract\u00e9risent par un climat int\u00e9rieur forestier significativement plus humide et plus frais.<\/p>\n<p>Les mesures de temp\u00e9rature de l\u2019air et d\u2019humidit\u00e9 relative entre les h\u00eatraies et les ch\u00eanaies thermophiles d\u00e9montrent les constats suivants :<\/p>\n<ul>\n<li>La couche d\u2019ombrage des for\u00eats de ch\u00eanes est jusqu\u2019\u00e0 3 \u00b0C plus chaude que la zone d\u2019ombrage dans les h\u00eatraies.<\/li>\n<li>L\u2019humidit\u00e9 relative est en moyenne 4 % plus faible dans le couvert ombrag\u00e9 des for\u00eats de ch\u00eanes que dans les for\u00eats de h\u00eatres.<\/li>\n<\/ul>\n<p>Ceci s\u2019explique par le d\u00e9veloppement caract\u00e9ristique chez le h\u00eatre de plusieurs couches de feuillage et d\u2019une surface totale de feuillage plus \u00e9lev\u00e9e par rapport \u00e0 d\u2019autres feuillus de la zone temp\u00e9r\u00e9e.<\/p>\n<p>Le h\u00eatre souffre actuellement des s\u00e9cheresses dans de nombreuses r\u00e9gions d\u2019Europe. Ce qui induit un recul de ses limites de r\u00e9partition sud et sa migration vers les sites au nord et de haute altitude. Un tel changement de v\u00e9g\u00e9tation modifie non seulement la structure de la for\u00eat et la composition des esp\u00e8ces, mais aussi fondamentalement le climat int\u00e9rieur de la for\u00eat, passant d\u2019un environnement frais et humide \u00e0 un environnement plus chaud et aride.<\/p>\n<p>Les ch\u00eanaies temp\u00e9r\u00e9es d\u2019Europe constituent souvent des for\u00eats mixtes avec d\u2019autres feuillus tels que le charme, le tilleul et le fr\u00eane, qui peuvent former des couronnes multicouches avec des indices de surface foliaire relativement \u00e9lev\u00e9s et un couvert assez bas. Cependant, lorsque les ch\u00eanes sont dominants, le rayonnement solaire traverse plus facilement le couvert forestier, car la couronne inf\u00e9rieure du houppier est tr\u00e8s peu d\u00e9velopp\u00e9e chez cette essence.<\/p>\n<p>Ces constatations appuient la n\u00e9cessit\u00e9 de pratiquer le m\u00e9lange d\u2019essences, l\u2019\u00e9tagement verticale des strates de v\u00e9g\u00e9tation et de limiter les interventions \u00e0 grande \u00e9chelle ayant un impact significatif sur l\u2019ambiance foresti\u00e8re, m\u00eame \u00e0 court terme.<\/p>","protected":false},"excerpt":{"rendered":"<p>Les chercheurs allemands et roumains \u00e9tudient le climat des for\u00eats de h\u00eatres et de ch\u00eanes et ont constat\u00e9 que les h\u00eatraies permettent une meilleure protection contre le r\u00e9chauffement climatique. En effet, les for\u00eats domin\u00e9es par le h\u00eatre se caract\u00e9risent par un climat int\u00e9rieur forestier significativement plus humide et plus frais. Les mesures de temp\u00e9rature de [&hellip;]<\/p>","protected":false},"featured_media":40783,"template":"","categories":[50],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ambiance foresti\u00e8re et climat plan\u00e9taire - For\u00eat.Nature<\/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:\/\/foretnature.be\/en\/resume-foret-mail\/ambiance-forestiere-et-climat-planetaire\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ambiance foresti\u00e8re et climat plan\u00e9taire - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Les chercheurs allemands et roumains \u00e9tudient le climat des for\u00eats de h\u00eatres et de ch\u00eanes et ont constat\u00e9 que les h\u00eatraies permettent une meilleure protection contre le r\u00e9chauffement climatique. En effet, les for\u00eats domin\u00e9es par le h\u00eatre se caract\u00e9risent par un climat int\u00e9rieur forestier significativement plus humide et plus frais. 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