{"id":34333,"date":"2021-09-10T11:45:22","date_gmt":"2021-09-10T09:45:22","guid":{"rendered":"https:\/\/foretnature.be\/resume-foret-mail\/le-hetre-un-redoutable-competiteur\/"},"modified":"2021-09-10T11:45:22","modified_gmt":"2021-09-10T09:45:22","slug":"le-hetre-un-redoutable-competiteur","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/le-hetre-un-redoutable-competiteur\/","title":{"rendered":"Le h\u00eatre, un redoutable comp\u00e9titeur"},"content":{"rendered":"

Les interventions sylvicoles et la composition en essences des peuplements font partie des choix les plus importants en gestion foresti\u00e8re. Tous deux d\u00e9terminent la forme des arbres et influencent donc leur valeur, tant \u00e9conomique (forme du tronc, branchaison), qu’\u00e9cologique (microhabitats). N\u00e9anmoins, les connaissances actuelles sont limit\u00e9es lorsqu’il s’agit de comprendre l’impact de la sylviculture ou de la diversit\u00e9 des essences sur l’architecture des arbres.
\nCinquante-cinq h\u00eatres ont donc fait l’objet de mesures au scanner pour d\u00e9terminer l’influence de ces param\u00e8tres sur leur achitecture. Les arbres ont \u00e9t\u00e9 s\u00e9lectionn\u00e9s dans des peuplements purs et m\u00e9lang\u00e9s, g\u00e9r\u00e9s selon diff\u00e9rentes intensit\u00e9s, ou non g\u00e9r\u00e9s.
\nAu plus la gestion foresti\u00e8re est intense, au plus les houppiers sont d\u00e9velopp\u00e9s et les troncs droits. Qui plus est, les h\u00eatres en pleuplements m\u00e9lang\u00e9s avec des feuillus pr\u00e9cieux ont un ratio hauteur-diam\u00e8tre plus faible, des branches plus longues et des insertions plus horizontales des branches sur le tronc par rapport aux peuplements purs.
\nLa plasticit\u00e9 ph\u00e9notypique du h\u00eatre selon les conditions environnementales est donc d\u00e9montr\u00e9e ! Ces diff\u00e9rences de structure des arbres traduisent une comp\u00e9tition plus importante lorsque l’intensit\u00e9 de la gestion foresti\u00e8re diminue et une comp\u00e9tition plus intense au sein des peuplements purs.
\nJuchheim J., Annigh\u00f6fer P., Ammer C., Calders K., Raumonen P., Seidel D. (2017). How management intensity and neighborhood composition affect the structure of beech (Fagus sylvatica L.) trees.\u00a0Trees 31(5)\u00a0: 1723-1735 (DOI 10.1007\/s00468-017-1581-z).<\/p>","protected":false},"excerpt":{"rendered":"

Les interventions sylvicoles et la composition en essences des peuplements font partie des choix les plus importants en gestion foresti\u00e8re. Tous deux d\u00e9terminent la forme des arbres et influencent donc leur valeur, tant \u00e9conomique (forme du tronc, branchaison), qu’\u00e9cologique (microhabitats). N\u00e9anmoins, les connaissances actuelles sont limit\u00e9es lorsqu’il s’agit de comprendre l’impact de la sylviculture ou […]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"\nLe h\u00eatre, un redoutable comp\u00e9titeur - 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\/le-hetre-un-redoutable-competiteur\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le h\u00eatre, un redoutable comp\u00e9titeur - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Les interventions sylvicoles et la composition en essences des peuplements font partie des choix les plus importants en gestion foresti\u00e8re. Tous deux d\u00e9terminent la forme des arbres et influencent donc leur valeur, tant \u00e9conomique (forme du tronc, branchaison), qu’\u00e9cologique (microhabitats). 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