{"id":34537,"date":"2021-09-10T11:45:59","date_gmt":"2021-09-10T09:45:59","guid":{"rendered":"https:\/\/foretnature.be\/resume-foret-mail\/quel-compromis-pour-favoriser-le-chene-face-a-la-molinie\/"},"modified":"2021-09-10T11:45:59","modified_gmt":"2021-09-10T09:45:59","slug":"quel-compromis-pour-favoriser-le-chene-face-a-la-molinie","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/quel-compromis-pour-favoriser-le-chene-face-a-la-molinie\/","title":{"rendered":"Quel compromis pour favoriser le ch\u00eane face \u00e0 la molinie ?"},"content":{"rendered":"<p>Les ch\u00eanaies \u00e0 molinie connaissent des difficult\u00e9s de r\u00e9g\u00e9n\u00e9ration, tant naturelle que par plantation. En effet, la molinie entrave la croissance des jeunes ch\u00eanes car la comp\u00e9tition est tr\u00e8s forte entre les deux esp\u00e8ces. Mais le dilemme r\u00e9side dans le fait que deux besoins s\u2019opposent. D\u2019un c\u00f4t\u00e9, il faut conserver de l\u2019ombrage avec des arbres adultes pour ma\u00eetriser la prolif\u00e9ration de la molinie. D\u2019autre part, ce peuplement adulte pompe beaucoup d\u2019eau dans le sol et peut induire un stress hydrique parfois fatal pour les jeunes ch\u00eanes qu\u2019il domine.<br \/>\nAfin de trouver un compromis entre ces deux besoins oppos\u00e9s, une \u00e9tude a \u00e9valu\u00e9 la comp\u00e9tition de la molinie sur la r\u00e9g\u00e9n\u00e9ration du ch\u00eane le long d\u2019un gradient de lumi\u00e8re. Il appara\u00eet que c\u2019est dans la gamme de transmittance* de 35 \u00e0 45 % que les jeunes ch\u00eanes peuvent cro\u00eetre (la molinie est ma\u00eetris\u00e9e), avec un risque limit\u00e9 de stress hydrique. Cela correspond \u00e0 une surface terri\u00e8re de 8 \u00e0 10 m\u00b2\/ha en ch\u00eanaie (* la transmittance est la proportion du rayonnement parvenant au sous-bois par rapport au rayonnement incident au-dessus du couvert arbor\u00e9).<br \/>\nVernay A. (2019). R\u00e9g\u00e9n\u00e9ration du ch\u00eane en comp\u00e9tition avec la molinie : un d\u00e9licat dosage des ressources en eau et en lumi\u00e8re. Les Rendez-Vous Techniques de l&rsquo;ONF 61-62 : 3-10.<\/p>","protected":false},"excerpt":{"rendered":"<p>Les ch\u00eanaies \u00e0 molinie connaissent des difficult\u00e9s de r\u00e9g\u00e9n\u00e9ration, tant naturelle que par plantation. En effet, la molinie entrave la croissance des jeunes ch\u00eanes car la comp\u00e9tition est tr\u00e8s forte entre les deux esp\u00e8ces. Mais le dilemme r\u00e9side dans le fait que deux besoins s\u2019opposent. D\u2019un c\u00f4t\u00e9, il faut conserver de l\u2019ombrage avec des arbres [&hellip;]<\/p>","protected":false},"featured_media":0,"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>Quel compromis pour favoriser le ch\u00eane face \u00e0 la molinie ? - 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\/quel-compromis-pour-favoriser-le-chene-face-a-la-molinie\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quel compromis pour favoriser le ch\u00eane face \u00e0 la molinie ? - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Les ch\u00eanaies \u00e0 molinie connaissent des difficult\u00e9s de r\u00e9g\u00e9n\u00e9ration, tant naturelle que par plantation. En effet, la molinie entrave la croissance des jeunes ch\u00eanes car la comp\u00e9tition est tr\u00e8s forte entre les deux esp\u00e8ces. Mais le dilemme r\u00e9side dans le fait que deux besoins s\u2019opposent. 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En effet, la molinie entrave la croissance des jeunes ch\u00eanes car la comp\u00e9tition est tr\u00e8s forte entre les deux esp\u00e8ces. Mais le dilemme r\u00e9side dans le fait que deux besoins s\u2019opposent. 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