{"id":45451,"date":"2025-06-13T09:53:54","date_gmt":"2025-06-13T07:53:54","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&p=45451"},"modified":"2025-06-13T11:30:14","modified_gmt":"2025-06-13T09:30:14","slug":"irregulier-ou-regulier-quel-traitement-pour-attenuer-les-effets-des-perturbations-naturelles","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/irregulier-ou-regulier-quel-traitement-pour-attenuer-les-effets-des-perturbations-naturelles\/","title":{"rendered":"Quel traitement pour att\u00e9nuer les effets des perturbations naturelles ?"},"content":{"rendered":"

Dans le contexte des changements climatiques, il est attendu que les perturbations naturelles, notamment celles dues au vent et aux pullulations de scolytes, s’intensifient dans le futur. Quelles strat\u00e9gies de gestion peuvent \u00eatre mises en place pour en att\u00e9nuer les effets ? En Europe centrale, la gestion vers des for\u00eats irr\u00e9guli\u00e8res a \u00e9t\u00e9 propos\u00e9e comme mesure pour r\u00e9duire le risque de perturbations. Est-ce une d\u00e9cision concluante ?<\/p>\n

Pour r\u00e9pondre \u00e0 cette question cruciale, une \u00e9tude a \u00e9t\u00e9 men\u00e9e sur diff\u00e9rents sites autrichiens, dont l’objectif \u00e9tait pr\u00e9cis\u00e9ment d’\u00e9valuer les diff\u00e9rences dans le r\u00e9gime de perturbations entre des for\u00eats de conif\u00e8res irr\u00e9guli\u00e8res et \u00e9quiennes pendant la p\u00e9riode 1986 \u00e0 2020. Ces sites brassent un large \u00e9ventail de conditions environnementales et le traitement irr\u00e9gulier y est pratiqu\u00e9 depuis plusieurs d\u00e9cennies. Les for\u00eats \u00e9quiennes choisies pour l’\u00e9tude se situent \u00e0 proximit\u00e9 des for\u00eats m\u00e9lang\u00e9es, et les scientifiques ont veill\u00e9 \u00e0 ce que les conditions environnementales y soient comparables.<\/p>\n

Les principaux r\u00e9sultats indiquent que dans les for\u00eats irr\u00e9guli\u00e8res, les taux de perturbation sont en moyenne 31,3 % plus faibles. Le retour d’une perturbation y est 36,3 % moins fr\u00e9quent, et la surface maximale affect\u00e9e est en moyenne 15,7 % moins grande par rapport aux for\u00eats \u00e9quiennes \u00e0 proximit\u00e9. En revanche, la proportion de perturbations de forte intensit\u00e9 n’est que tr\u00e8s faiblement inf\u00e9rieure (3,8 %) dans les for\u00eats irr\u00e9guli\u00e8res par rapport aux for\u00eats r\u00e9guli\u00e8res. Il est \u00e9galement \u00e0 noter que la topographie du lieu exerce une forte influence : en effet, m\u00eame si les for\u00eats irr\u00e9guli\u00e8res ont globalement des taux de perturbation moindres, ceux-ci sont plus importants que les for\u00eats \u00e9quiennes dans le cas de fortes pentes (plus de 20\u00b0) et de hautes altitudes (plus de 1500 m\u00e8tres).<\/p>\n

Un mode de gestion irr\u00e9gulier peut donc contrecarrer en partie les effets des perturbations naturelles dans les for\u00eats d’Europe centrale, mais les conditions locales doivent \u00eatre finement \u00e9tudi\u00e9es et prises en compte pour adapter au mieux les for\u00eats aux changements climatiques.<\/p>","protected":false},"excerpt":{"rendered":"

Dans le contexte des changements climatiques, il est attendu que les perturbations naturelles, notamment celles dues au vent et aux pullulations de scolytes, s’intensifient dans le futur. Quelles strat\u00e9gies de gestion peuvent \u00eatre mises en place pour en att\u00e9nuer les effets ? En Europe centrale, la gestion vers des for\u00eats irr\u00e9guli\u00e8res a \u00e9t\u00e9 propos\u00e9e comme […]<\/p>","protected":false},"featured_media":45432,"template":"","categories":[50],"acf":[],"yoast_head":"\nQuel traitement pour att\u00e9nuer les effets des perturbations naturelles ? - 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\/irregulier-ou-regulier-quel-traitement-pour-attenuer-les-effets-des-perturbations-naturelles\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quel traitement pour att\u00e9nuer les effets des perturbations naturelles ? - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Dans le contexte des changements climatiques, il est attendu que les perturbations naturelles, notamment celles dues au vent et aux pullulations de scolytes, s’intensifient dans le futur. 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