{"id":35458,"date":"2022-03-21T09:10:30","date_gmt":"2022-03-21T08:10:30","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&p=35458"},"modified":"2022-03-21T09:16:00","modified_gmt":"2022-03-21T08:16:00","slug":"une-bonne-litiere-comme-anti-acide-pour-les-sols-forestiers","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/une-bonne-litiere-comme-anti-acide-pour-les-sols-forestiers\/","title":{"rendered":"Une bonne liti\u00e8re comme anti-acide pour les sols forestiers"},"content":{"rendered":"

En Europe de l\u2019Ouest, les for\u00eats sont souvent situ\u00e9es sur des sols d\u00e9grad\u00e9s. Ces derniers ont g\u00e9n\u00e9ralement connu une acidification au cours du temps (d\u2019origine atmosph\u00e9rique ou sylvicole), ce qui entrave le fonctionnement de l’\u00e9cosyst\u00e8me et diminue les services \u00e9cosyst\u00e9miques rendus par ces for\u00eats.<\/p>\n

La gestion foresti\u00e8re, et plus particuli\u00e8rement le choix des essences, peut acc\u00e9l\u00e9rer ou contrecarrer l’acidification du sol par la qualit\u00e9 de la liti\u00e8re produite. L’impact positif des liti\u00e8res \u00ab riches \u00bb sur le statut nutritionnel des sols et de l’\u00e9cosyst\u00e8me souterrain a d\u2019ailleurs d\u00e9j\u00e0 \u00e9t\u00e9 d\u00e9montr\u00e9 dans les jardins. Dans cette \u00e9tude, l’impact de la liti\u00e8re riche du cerisier tardif (Prunus serotina), esp\u00e8ce invasive des sous-bois, a \u00e9t\u00e9 \u00e9valu\u00e9 dans des peuplements m\u00e9lang\u00e9s o\u00f9 le ch\u00eane p\u00e9doncul\u00e9 domine. Des peuplements allant de 30 \u00e0 90 ans ont servi de sites d’\u00e9tude en Belgique, aux Pays-Bas et en Allemagne.<\/p>\n

Les r\u00e9sultats montrent que la pr\u00e9sence du cerisier tardif am\u00e9liore le turn-over de la mati\u00e8re organique et enrichit les parties superficielles du sol en \u00e9l\u00e9ments min\u00e9raux. L’\u00e9paisseur de la liti\u00e8re diminue et passe de 7 cm sous les ch\u00eanes, \u00e0 4,5 cm sous les cerisiers tardifs. La saturation en base augmente jusqu’\u00e0 25 % alors que la concentration en nitrate et la mati\u00e8re organique s’accroissent de 8 %. Cependant, de grandes quantit\u00e9s de liti\u00e8re \u00ab riche \u00bb sont n\u00e9cessaires pour am\u00e9liorer r\u00e9ellement les conditions de sol. Il faut en effet plus de 30 % de la surface terri\u00e8re en cerisier tardif pour remarquer les effets positifs. Qui plus est, les effets sont plus marqu\u00e9s sur les sols sableux qui contiennent plus de particules fines (limons et argiles). Il semble donc que l’impact des efforts de restauration des sols acidifi\u00e9s est le r\u00e9sultat de trois facteurs : qualit\u00e9 de la liti\u00e8re, quantit\u00e9 de liti\u00e8re, qualit\u00e9 de la station.<\/p>","protected":false},"excerpt":{"rendered":"

En Europe de l\u2019Ouest, les for\u00eats sont souvent situ\u00e9es sur des sols d\u00e9grad\u00e9s. Ces derniers ont g\u00e9n\u00e9ralement connu une acidification au cours du temps (d\u2019origine atmosph\u00e9rique ou sylvicole), ce qui entrave le fonctionnement de l’\u00e9cosyst\u00e8me et diminue les services \u00e9cosyst\u00e9miques rendus par ces for\u00eats. La gestion foresti\u00e8re, et plus particuli\u00e8rement le choix des essences, peut […]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"\nUne bonne liti\u00e8re comme anti-acide pour les sols forestiers - 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\/une-bonne-litiere-comme-anti-acide-pour-les-sols-forestiers\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Une bonne liti\u00e8re comme anti-acide pour les sols forestiers - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"En Europe de l\u2019Ouest, les for\u00eats sont souvent situ\u00e9es sur des sols d\u00e9grad\u00e9s. Ces derniers ont g\u00e9n\u00e9ralement connu une acidification au cours du temps (d\u2019origine atmosph\u00e9rique ou sylvicole), ce qui entrave le fonctionnement de l’\u00e9cosyst\u00e8me et diminue les services \u00e9cosyst\u00e9miques rendus par ces for\u00eats. 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