{"id":44363,"date":"2024-10-23T16:43:29","date_gmt":"2024-10-23T14:43:29","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=article-foret-nature&#038;p=44363"},"modified":"2024-10-23T16:43:29","modified_gmt":"2024-10-23T14:43:29","slug":"autecologie-et-specificites-sylvicoles-du-tremble","status":"publish","type":"article-foret-nature","link":"https:\/\/foretnature.be\/en\/article-foret-nature\/autecologie-et-specificites-sylvicoles-du-tremble\/","title":{"rendered":"Aut\u00e9cologie et sp\u00e9cificit\u00e9s sylvicoles du tremble"},"content":{"rendered":"<p>La r\u00e9gression du tremble en R\u00e9gion wallonne (60 % des effectifs en 20 ans) est essentiellement due \u00e0 une connaissance limit\u00e9e de ses caract\u00e9ristiques \u00e9cologiques particuli\u00e8res : essence pionni\u00e8re et h\u00e9liophile stricte, le peuplier tremble (Populus tremula) souffre \u00e9norm\u00e9ment d\u2019une sylviculture largement orient\u00e9e vers les essences sciaphiles et semi-sciaphiles. Pourtant il pr\u00e9sente d\u2019\u00e9normes qualit\u00e9s sous-exploit\u00e9es : une plasticit\u00e9 tr\u00e8s grande ; une capacit\u00e9 de r\u00e9g\u00e9n\u00e9ration par semis, drageons et rec\u00e9page fort importante ; une croissance rapide ; il constitue un h\u00f4te indispensable au maintien du Petit mars changeant (Apatura ilia), un l\u00e9pidopt\u00e8re en voie d\u2019extinction ; des aspects esth\u00e9tiques et paysagers non n\u00e9gligeables. Quelques premiers \u00e9l\u00e9ments de sylviculture sont expos\u00e9s : il souffre \u00e9norm\u00e9ment de la concurrence du sous-\u00e9tage et de la fermeture des couverts ; l\u2019humidit\u00e9 ou l\u2019accumulation des d\u00e9chets d\u2019exploitation peuvent constituer un facteur limitatif dans la vigueur des drageons, en agissant sur la r\u00e9gulation thermique du sol ; contrairement \u00e0 la sylviculture \u00ab classique \u00bb, les caract\u00e9ristiques clonales et la propagation par drageons des tremblaies impliquent que les clones \u00e0 r\u00e9g\u00e9n\u00e9rer soient exploit\u00e9s en priorit\u00e9. En effet, la coupe induit l\u2019apparition de nouveaux individus par drageonnement. Il importe donc de laisser les clones \u00e0 r\u00e9g\u00e9n\u00e9rer se d\u00e9velopper quelque peu avant de couper les clones non d\u00e9sir\u00e9s dont les drageons seront d\u00e9favoris\u00e9s par le manque de lumi\u00e8re ; la r\u00e9g\u00e9n\u00e9ration du tremble exigerait de passer par une mise \u00e0 blanc d\u2019au minimum 0, 5 ha.<\/p>","protected":false},"excerpt":{"rendered":"<p>La r\u00e9gression du tremble en R\u00e9gion wallonne (60 % des effectifs en 20 ans) est essentiellement due \u00e0 une connaissance limit\u00e9e de ses caract\u00e9ristiques \u00e9cologiques particuli\u00e8res : essence pionni\u00e8re et h\u00e9liophile stricte, le peuplier tremble (Populus tremula) souffre \u00e9norm\u00e9ment d\u2019une sylviculture largement orient\u00e9e vers les essences sciaphiles et semi-sciaphiles. Pourtant il pr\u00e9sente d\u2019\u00e9normes qualit\u00e9s sous-exploit\u00e9es [&hellip;]<\/p>","protected":false},"featured_media":0,"template":"","categories":[49],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Aut\u00e9cologie et sp\u00e9cificit\u00e9s sylvicoles du tremble - 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\/article-foret-nature\/autecologie-et-specificites-sylvicoles-du-tremble\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aut\u00e9cologie et sp\u00e9cificit\u00e9s sylvicoles du tremble - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"La r\u00e9gression du tremble en R\u00e9gion wallonne (60 % des effectifs en 20 ans) est essentiellement due \u00e0 une connaissance limit\u00e9e de ses caract\u00e9ristiques \u00e9cologiques particuli\u00e8res : essence pionni\u00e8re et h\u00e9liophile stricte, le peuplier tremble (Populus tremula) souffre \u00e9norm\u00e9ment d\u2019une sylviculture largement orient\u00e9e vers les essences sciaphiles et semi-sciaphiles. 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