{"id":53675,"date":"2026-02-20T10:15:47","date_gmt":"2026-02-20T15:15:47","guid":{"rendered":"https:\/\/www.uqac.ca\/uqactualites\/?p=53675"},"modified":"2026-03-20T08:00:33","modified_gmt":"2026-03-20T12:00:33","slug":"lavenir-de-la-foret-boreale-du-quebec-compromis-par-laugmentation-de-lactivite-des-feux","status":"publish","type":"post","link":"https:\/\/www.uqac.ca\/uqactualites\/2026\/02\/20\/lavenir-de-la-foret-boreale-du-quebec-compromis-par-laugmentation-de-lactivite-des-feux\/","title":{"rendered":"L\u2019avenir de la for\u00eat bor\u00e9ale du Qu\u00e9bec compromis par l\u2019augmentation de l\u2019activit\u00e9 des feux"},"content":{"rendered":"<p>Une toute nouvelle \u00e9tude publi\u00e9e dans la prestigieuse revue <em>Journal of Ecology<\/em> par l\u2019\u00e9quipe du professeur de l&rsquo;UQAC en \u00e9cologie et am\u00e9nagement forestier <a href=\"https:\/\/portfolio.uqac.ca\/yanboucher\/\" target=\"_blank\" rel=\"noopener\">Yan Boucher<\/a>\u00a0a permis de montrer que l\u2019augmentation de l\u2019activit\u00e9 des feux en r\u00e9ponse aux changements climatiques pourrait entra\u00eener des probl\u00e8mes majeurs pour la r\u00e9silience et la r\u00e9g\u00e9n\u00e9ration de la for\u00eat bor\u00e9ale.<\/p>\n<p>Les travaux de recherche men\u00e9s dans la for\u00eat bor\u00e9ale du Qu\u00e9bec montrent, entre autres, que la fr\u00e9quence et la s\u00e9v\u00e9rit\u00e9 des feux pourraient fortement r\u00e9duire la capacit\u00e9 de r\u00e9g\u00e9n\u00e9ration des for\u00eats domin\u00e9es par l\u2019\u00e9pinette noire, la pierre d\u2019assise de l\u2019industrie foresti\u00e8re r\u00e9gionale.<\/p>\n<p>Stelsa Fortin, doctorante \u00e0 l&rsquo;UQAT sous la codirection du P<sup>r<\/sup> Boucher, a analys\u00e9 un vaste r\u00e9seau de 536 peuplements matures domin\u00e9s par l\u2019\u00e9pinette noire, touch\u00e9s par 21 incendies entre 1995\u20132016, couvrant une vaste \u00e9tendue bor\u00e9ale de 50 400 km\u00b2 dans l\u2019est de l\u2019Am\u00e9rique du Nord. Ce jeu de donn\u00e9es d\u2019une ampleur et d\u2019une \u00e9tendue spatiale sans pr\u00e9c\u00e9dent dans l\u2019est du Canada a permis \u00e0 l\u2019\u00e9quipe de recherche de pr\u00e9senter la premi\u00e8re \u00e9valuation robuste de la r\u00e9silience au feu des for\u00eats matures d\u2019\u00e9pinettes noires.<\/p>\n<p>Men\u00e9e en collaboration avec des chercheurs et chercheuses de plusieurs universit\u00e9s et centres de recherche qu\u00e9b\u00e9cois (UQAT, UQAR, UQAM, Universit\u00e9 Laval, Universit\u00e9 de Montr\u00e9al, Ressources naturelles Canada, minist\u00e8re des Ressources naturelles et des For\u00eats, Direction de la recherche foresti\u00e8re), l\u2019\u00e9tude a quantifi\u00e9 la densit\u00e9 des semis r\u00e9siduels d\u2019\u00e9pinettes et de toutes les esp\u00e8ces d\u2019arbres pr\u00e9sentes apr\u00e8s un feu, permettant d\u2019\u00e9valuer la transition potentielle de ces superficies vers le pin gris ou d\u2019autres esp\u00e8ces feuillues. L\u2019\u00e9tude a \u00e9galement caract\u00e9ris\u00e9 la s\u00e9v\u00e9rit\u00e9 des feux et analys\u00e9 l\u2019\u00e9tat de la banque de graines viables, de m\u00eame que les conditions du sol favorables \u00e0 la r\u00e9g\u00e9n\u00e9ration post-feu.<\/p>\n<p>Selon leurs analyses, un tiers des peuplements matures \u00e0 couvert ferm\u00e9 avant feu devraient \u00e9voluer vers des for\u00eats ouvertes, moins denses et moins productives, un changement susceptible de persister pendant des si\u00e8cles.<\/p>\n<p>Les for\u00eats matures domin\u00e9es par l\u2019\u00e9pinette noire sont g\u00e9n\u00e9ralement consid\u00e9r\u00e9es comme plus r\u00e9silientes au feu que les jeunes peuplements, cependant, \u00ab l&rsquo;\u00e9tude soul\u00e8ve des inqui\u00e9tudes quant \u00e0 leur capacit\u00e9 \u00e0 persister et \u00e0 maintenir les services \u00e9cosyst\u00e9miques dans un contexte d\u2019augmentation des superficies br\u00fbl\u00e9es et de la s\u00e9v\u00e9rit\u00e9 des incendies pr\u00e9vue, en lien avec les perturbations climatiques \u00bb, souligne Yan Boucher.<\/p>\n<p>Pour en savoir plus, l\u2019article est disponible en acc\u00e8s libre \u00e0 partir de l&rsquo;adresse suivante : <a href=\"http:\/\/dx.doi.org\/10.1111\/1365-2745.70260\">http:\/\/dx.doi.org\/10.1111\/1365-2745.70260<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une toute nouvelle \u00e9tude publi\u00e9e dans la prestigieuse revue Journal of Ecology par l\u2019\u00e9quipe du professeur de l&rsquo;UQAC en \u00e9cologie et am\u00e9nagement forestier Yan Boucher\u00a0a permis de montrer que l\u2019augmentation de l\u2019activit\u00e9 des feux en r\u00e9ponse aux changements climatiques pourrait entra\u00eener des probl\u00e8mes majeurs pour la r\u00e9silience et la r\u00e9g\u00e9n\u00e9ration de la for\u00eat bor\u00e9ale. Les [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":53677,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2795,2,4],"tags":[6,3],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>L\u2019avenir de la for\u00eat bor\u00e9ale du Qu\u00e9bec compromis par l\u2019augmentation de l\u2019activit\u00e9 des feux - UQACtualit\u00e9s<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.uqac.ca\/uqactualites\/2026\/02\/20\/lavenir-de-la-foret-boreale-du-quebec-compromis-par-laugmentation-de-lactivite-des-feux\/\" \/>\r\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"L\u2019avenir de la for\u00eat bor\u00e9ale du Qu\u00e9bec compromis par l\u2019augmentation de l\u2019activit\u00e9 des feux - UQACtualit\u00e9s\" \/>\r\n<meta property=\"og:description\" content=\"Une toute nouvelle \u00e9tude publi\u00e9e dans la prestigieuse revue Journal of Ecology par l\u2019\u00e9quipe du professeur de l&rsquo;UQAC en \u00e9cologie et am\u00e9nagement forestier Yan Boucher\u00a0a permis de montrer que l\u2019augmentation de l\u2019activit\u00e9 des feux en r\u00e9ponse aux changements climatiques pourrait entra\u00eener des probl\u00e8mes majeurs pour la r\u00e9silience et la r\u00e9g\u00e9n\u00e9ration de la for\u00eat bor\u00e9ale. 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