{"id":34313,"date":"2021-09-10T11:45:19","date_gmt":"2021-09-10T09:45:19","guid":{"rendered":"https:\/\/foretnature.be\/resume-foret-mail\/forets-gerees-ou-non-quels-impacts-pour-la-biodiversite\/"},"modified":"2021-09-10T11:45:19","modified_gmt":"2021-09-10T09:45:19","slug":"forets-gerees-ou-non-quels-impacts-pour-la-biodiversite","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/forets-gerees-ou-non-quels-impacts-pour-la-biodiversite\/","title":{"rendered":"For\u00eats g\u00e9r\u00e9es ou non, quels impacts pour la biodiversit\u00e9\u00a0?"},"content":{"rendered":"

Pour cette \u00e9tude, 49 articles sur 197 comparaisons de diversit\u00e9 structurelle et de composition entre des for\u00eats g\u00e9r\u00e9es et non g\u00e9r\u00e9es, ainsi que 53 comparaisons de productivit\u00e9 de biomasse entre des for\u00eats m\u00e9lang\u00e9es et monosp\u00e9cifiques en Europe centrale ont \u00e9t\u00e9 examin\u00e9s. Le but : observer comment la gestion, ou la non gestion, des for\u00eats influence la biodiversit\u00e9.
\nSi l\u2019on s\u2019int\u00e9resse \u00e0 d\u2019\u00e9ventuelles pertes de biodiversit\u00e9, on voit que la gestion des peuplements forestiers impacte principalement la composition, la structure et le fonctionnement de la biodiversit\u00e9 qui sont des caract\u00e9ristiques, non seulement li\u00e9es entre elles, mais qui int\u00e8grent diff\u00e9rents niveaux d\u2019\u00e9cosyst\u00e8mes organisationnels et spatiaux.
\nGlobalement, la gestion foresti\u00e8re influence la diversit\u00e9 des esp\u00e8ces d\u2019arbres, qui \u00e0 son tour affecte la structure du peuplement, et qui finalement conduit \u00e0 des changements dans les fonctions et services de la for\u00eat.
\nR\u00e9sultats : en ce qui concerne la richesse et la diversit\u00e9 sp\u00e9cifique, l\u2019\u00e9tude n\u2019a pas pu d\u00e9montrer un vrai impact de la gestion ni d\u2019influence du temps pass\u00e9 depuis l\u2019abandon de la gestion. Il faut dire que les peuplements \u00e9tudi\u00e9s ne sont pas \u00e0 l\u2019abandon depuis tr\u00e8s longtemps et n\u2019ont pas encore vraiment subi de perturbations \u00e0 larges \u00e9chelles capables d\u2019influencer leur fonctionnement (temp\u00eates, feu, scolytes, pr\u00e9sences de grands pr\u00e9dateurs, etc.). D\u2019autre part, les peuplements g\u00e9r\u00e9s pris en consid\u00e9ration sont souvent trait\u00e9s avec une sylviculture proche de la nature depuis plusieurs ann\u00e9es.
\nLes caract\u00e9ristiques structurelles sont par contre tr\u00e8s li\u00e9es \u00e0 la gestion foresti\u00e8re.
\nFait important, la gestion foresti\u00e8re diminue effectivement la quantit\u00e9 de bois mort, le nombre de micro-habitats et la diversit\u00e9 de la taille des arbres, mais n\u2019a pas d\u2019effet sur la surface terri\u00e8re du peuplement ni sur le nombre d\u2019arbres vivants.
\nPar rapport aux peuplement non g\u00e9r\u00e9s, la productivit\u00e9 des for\u00eats est significativement am\u00e9lior\u00e9e lorsque des \u00e9claircies mod\u00e9r\u00e9es et r\u00e9guli\u00e8res sont pratiqu\u00e9es. Le m\u00e9lange des essences augmente \u00e9galement la productivit\u00e9 par rapport aux peuplements monosp\u00e9cifiques.
\nDieler J., Uhl E., Biber P., M\u00fcller J., R\u00f6tzer T., Pretzsch H. (2017). Effect of forest stand management on species composition, structural diversity, and productivity in the temperate zone of Europe. European Journal of Forest Research. DOI 10.1007\/s10342-017-1056-1.<\/p>","protected":false},"excerpt":{"rendered":"

Pour cette \u00e9tude, 49 articles sur 197 comparaisons de diversit\u00e9 structurelle et de composition entre des for\u00eats g\u00e9r\u00e9es et non g\u00e9r\u00e9es, ainsi que 53 comparaisons de productivit\u00e9 de biomasse entre des for\u00eats m\u00e9lang\u00e9es et monosp\u00e9cifiques en Europe centrale ont \u00e9t\u00e9 examin\u00e9s. Le but : observer comment la gestion, ou la non gestion, des for\u00eats influence […]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"\nFor\u00eats g\u00e9r\u00e9es ou non, quels impacts pour la biodiversit\u00e9\u00a0? - 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\/forets-gerees-ou-non-quels-impacts-pour-la-biodiversite\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"For\u00eats g\u00e9r\u00e9es ou non, quels impacts pour la biodiversit\u00e9\u00a0? - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Pour cette \u00e9tude, 49 articles sur 197 comparaisons de diversit\u00e9 structurelle et de composition entre des for\u00eats g\u00e9r\u00e9es et non g\u00e9r\u00e9es, ainsi que 53 comparaisons de productivit\u00e9 de biomasse entre des for\u00eats m\u00e9lang\u00e9es et monosp\u00e9cifiques en Europe centrale ont \u00e9t\u00e9 examin\u00e9s. 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