{"id":44222,"date":"2024-10-23T16:41:26","date_gmt":"2024-10-23T14:41:26","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=article-foret-nature&#038;p=44222"},"modified":"2024-10-23T16:41:26","modified_gmt":"2024-10-23T14:41:26","slug":"diversite-des-milieux-de-developpement-pour-les-saules-indigenes","status":"publish","type":"article-foret-nature","link":"https:\/\/foretnature.be\/en\/article-foret-nature\/diversite-des-milieux-de-developpement-pour-les-saules-indigenes\/","title":{"rendered":"Diversit\u00e9 des milieux de d\u00e9veloppement pour les saules indig\u00e8nes"},"content":{"rendered":"<p>Les conditions \u00e9daphiques les plus favorables \u00e0 tous les saules correspondent aux sols assez acides \u00e0 neutres avec un \u00e9tat hydrique allant de l&rsquo;humide au non-sec. Mais entre les situations optimales et la r\u00e9alit\u00e9 de terrain, l&rsquo;ad\u00e9quation s&rsquo;observe-t-elle ? Trois grands types de sol repr\u00e9sentent les principaux sols travers\u00e9s par les cours d&rsquo;eau de Wallonie : limono-caillouteux \u00e0 argileux, limono-caillouteux \u00e0 schisteux et non caillouteux et non argileux. Les longs cours d&rsquo;eau traversent naturellement plus d&rsquo;un de ces types de sol. Les r\u00e9sultats du croisement des donn\u00e9es d&rsquo;inventaires avec le relief et le type de sol peuvent se r\u00e9sumer comme ceci : l&rsquo;hybride entre Salix alba et Salix fragilis est syst\u00e9matiquement fr\u00e9quent dans les reliefs les plus repr\u00e9sent\u00e9s. Ce qui met en \u00e9vidence sa grande capacit\u00e9 colonisatrice dans toute la Wallonie ; un peu moins de la moiti\u00e9 des saules d\u00e9termin\u00e9s (45 %) proviennent d&rsquo;Ardenne, avec les grands types de sol limono-caillouteux \u00e0 argileux. Les deux esp\u00e8ces de fourr\u00e9s, Salix caprea et Salix purpurea, constituent la moiti\u00e9 des arbres identifi\u00e9s avec une pr\u00e9f\u00e9rence de relief ferm\u00e9 pour le premier et de relief semi-ouvert pour le second ; les grands types de sol limono-caillouteux \u00e0 schisteux sont un peu plus perm\u00e9ables que les types pr\u00e9c\u00e9dents, avec un relief de semi-ferm\u00e9 \u00e0 ferm\u00e9. Plus de 80 % des arbres d\u00e9termin\u00e9s sont l&rsquo;hybride entre Salix fragilis et Salix alba ; les esp\u00e8ces d\u00e9termin\u00e9es dans les sols non argileux et non caillouteux sont celles des zones typiquement ripicoles pour les conditions non tourbeuses et non mar\u00e9cageuses. Ce sont les saulaies arbustives pionni\u00e8res typiques. [B.C.]<\/p>","protected":false},"excerpt":{"rendered":"<p>Les conditions \u00e9daphiques les plus favorables \u00e0 tous les saules correspondent aux sols assez acides \u00e0 neutres avec un \u00e9tat hydrique allant de l&rsquo;humide au non-sec. Mais entre les situations optimales et la r\u00e9alit\u00e9 de terrain, l&rsquo;ad\u00e9quation s&rsquo;observe-t-elle ? Trois grands types de sol repr\u00e9sentent les principaux sols travers\u00e9s par les cours d&rsquo;eau de Wallonie [&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>Diversit\u00e9 des milieux de d\u00e9veloppement pour les saules indig\u00e8nes - 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\/diversite-des-milieux-de-developpement-pour-les-saules-indigenes\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Diversit\u00e9 des milieux de d\u00e9veloppement pour les saules indig\u00e8nes - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Les conditions \u00e9daphiques les plus favorables \u00e0 tous les saules correspondent aux sols assez acides \u00e0 neutres avec un \u00e9tat hydrique allant de l&rsquo;humide au non-sec. Mais entre les situations optimales et la r\u00e9alit\u00e9 de terrain, l&rsquo;ad\u00e9quation s&rsquo;observe-t-elle ? 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