{"id":45111,"date":"2025-03-10T15:52:54","date_gmt":"2025-03-10T14:52:54","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=45111"},"modified":"2025-03-10T15:52:54","modified_gmt":"2025-03-10T14:52:54","slug":"bilan-de-25-ans-dexperimentations-sur-le-meleze-en-wallonie","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/bilan-de-25-ans-dexperimentations-sur-le-meleze-en-wallonie\/","title":{"rendered":"Bilan de 25 ans d&rsquo;exp\u00e9rimentations sur le m\u00e9l\u00e8ze en Wallonie"},"content":{"rendered":"<p>Au-del\u00e0 des accroissements obtenus en sylviculture dynamique, les m\u00e9l\u00e8zes offrent surtout une belle opportunit\u00e9 de diversifier les peuplements dans la perspective des changements climatiques et pour pallier les probl\u00e8mes sanitaires des autres r\u00e9sineux. Gr\u00e2ce au financement sur le long terme du Plan quinquennal de recherches et vulgarisation foresti\u00e8re, un bilan de vingt-cinq ann\u00e9es d\u2019exp\u00e9riences sylvicoles a pu \u00eatre men\u00e9.<\/p>\n<p>Durant l\u2019hiver 1998-1999, plusieurs parcelles exp\u00e9rimentales de sylvicultures tr\u00e8s dynamiques ont \u00e9t\u00e9 install\u00e9es dans de jeunes m\u00e9l\u00e9zi\u00e8res en Wallonie. Trois modalit\u00e9s de traitement diff\u00e9rentes et plus intensives y ont \u00e9t\u00e9 test\u00e9es, en reflet des recommandations sylvicoles du guide sur le m\u00e9l\u00e8ze en Wallonie. Le suivi individuel des arbres dans les parcelles a permis de retracer l\u2019\u00e9volution de diff\u00e9rents param\u00e8tres dendrom\u00e9triques au cours de ces vingt-cinq derni\u00e8res ann\u00e9es, dont la croissance en grosseur, la production en volume et la stabilit\u00e9 des peuplements. Une analyse dendrom\u00e9trique comparative au cas par cas des modalit\u00e9s sylvicoles test\u00e9es a permis d\u2019identifier des tendances pour des stations de bonne productivit\u00e9. Les modalit\u00e9s test\u00e9es produisent des arbres plus gros plus rapidement par rapport \u00e0 la placette t\u00e9moin, repr\u00e9sentative de la sylviculture conventionnelle, permettant ainsi de raccourcir la r\u00e9volution et donc la dur\u00e9e d\u2019exposition des arbres aux al\u00e9as sanitaires et climatiques. Elles produisent aussi des arbres plus trapus r\u00e9sistant mieux au vent ou aux neiges lourdes. Cependant aucune des modalit\u00e9s ne se diff\u00e9rencie nettement des autres pour les arbres dominants. Une limite semble toutefois \u00eatre atteinte dans l\u2019effet de l\u2019intensit\u00e9 des coupes sur la production en volume du peuplement, o\u00f9 des coupes descendant en dessous d\u2019une surface terri\u00e8re de 18 m\u00b2\/ha m\u00e8neraient vers une perte de production. Ces r\u00e9sultats ouvrent des pistes de r\u00e9flexions pour la construction d\u2019un guide sylvicole actualis\u00e9 qui abordera aussi la sylviculture des m\u00e9langes comportant du m\u00e9l\u00e8ze.<\/p>","protected":false},"excerpt":{"rendered":"<p>Au-del\u00e0 des accroissements obtenus en sylviculture dynamique, les m\u00e9l\u00e8zes offrent surtout une belle opportunit\u00e9 de diversifier les peuplements dans la perspective des changements climatiques et pour pallier les probl\u00e8mes sanitaires des autres r\u00e9sineux. Gr\u00e2ce au financement sur le long terme du Plan quinquennal de recherches et vulgarisation foresti\u00e8re, un bilan de vingt-cinq ann\u00e9es d\u2019exp\u00e9riences sylvicoles [&hellip;]<\/p>","protected":false},"featured_media":45095,"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>Bilan de 25 ans d&#039;exp\u00e9rimentations sur le m\u00e9l\u00e8ze en Wallonie - 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\/bilan-de-25-ans-dexperimentations-sur-le-meleze-en-wallonie\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bilan de 25 ans d&#039;exp\u00e9rimentations sur le m\u00e9l\u00e8ze en Wallonie - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Au-del\u00e0 des accroissements obtenus en sylviculture dynamique, les m\u00e9l\u00e8zes offrent surtout une belle opportunit\u00e9 de diversifier les peuplements dans la perspective des changements climatiques et pour pallier les probl\u00e8mes sanitaires des autres r\u00e9sineux. 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