{"id":46412,"date":"2026-04-13T16:13:34","date_gmt":"2026-04-13T14:13:34","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=46412"},"modified":"2026-04-13T16:13:34","modified_gmt":"2026-04-13T14:13:34","slug":"bilan-2025-de-la-sante-des-forets-en-wallonie","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/","title":{"rendered":"Bilan 2025 de la sant\u00e9 des for\u00eats en Wallonie"},"content":{"rendered":"<p>Le rapport sur l\u2019\u00e9tat de la sant\u00e9 des for\u00eats wallonnes en 2025 de l\u2019OWSF dresse un bilan contrast\u00e9 de la situation sanitaire des massifs forestiers apr\u00e8s une d\u00e9cennie marqu\u00e9e par des extr\u00eames climatiques.<\/p>\n<p><strong>1. Un r\u00e9pit relatif mais une vigilance accrue<\/strong><\/p>\n<p>Apr\u00e8s les crises majeures de 2018 \u00e0 2022, l&rsquo;ann\u00e9e 2025 montre une certaine stabilisation, gr\u00e2ce notamment \u00e0 des p\u00e9riodes plus humides qui ont permis de freiner certains ravageurs. Cependant, les experts soulignent que la \u00ab m\u00e9moire biologique \u00bb des arbres reste marqu\u00e9e par les s\u00e9cheresses pass\u00e9es.<\/p>\n<p><strong>2. \u00c9tat par essence : les points critiques<\/strong><\/p>\n<ul>\n<li>Le h\u00eatre est l&rsquo;essence qui inqui\u00e8te le plus. Son \u00e9tat de sant\u00e9 continue de se d\u00e9grader lentement. On observe une d\u00e9foliation persistante et des fructifications massives r\u00e9p\u00e9t\u00e9es qui \u00e9puisent les r\u00e9serves \u00e9nerg\u00e9tiques des arbres.<\/li>\n<li>Les ch\u00eanes, bien que plus r\u00e9sistants que le h\u00eatre, montrent des signes de fatigue, particuli\u00e8rement en Famenne, sur les sols schisteux qui ne retiennent pas l&rsquo;eau.<\/li>\n<li>L&rsquo;\u00e9pic\u00e9a conna\u00eet une accalmie car la crise des scolytes est enfin en phase de d\u00e9crue. Le volume de bois scolyt\u00e9 a fortement chut\u00e9 par rapport aux ann\u00e9es noires, mais les populations d&rsquo;insectes restent sous surveillance \u00e9troite.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>3. Douglas : Le \u00ab nouveau \u00bb point d&rsquo;attention<\/strong><\/p>\n<p>Longtemps consid\u00e9r\u00e9 comme l&rsquo;alternative id\u00e9ale \u00e0 l&rsquo;\u00e9pic\u00e9a, le douglas entre sous monitoring renforc\u00e9. Le rapport 2025 met en \u00e9vidence des attaques de c\u00e9cidomyie et de rouille suisse, ainsi que des signes de stress hydrique sur certains sols, remettant \u00e0 nouveau en cause l&rsquo;id\u00e9e d&rsquo;une essence \u00ab invuln\u00e9rable \u00bb.<\/p>\n<p><strong>4. Outils de gestion<\/strong><\/p>\n<ul>\n<li>Le <em>r\u00e9seau DEPERIS<\/em> permet d\u00e9sormais une vision tr\u00e8s pr\u00e9cise de l&rsquo;\u00e9volution de la vitalit\u00e9 arbre par arbre.<\/li>\n<li>Les <em>Guides des Stations<\/em> permettent d\u2019aider les forestiers \u00e0 choisir \u00ab le bon arbre au bon endroit \u00bb dans une optique de gestion raisonn\u00e9e de la for\u00eat. Apr\u00e8s l\u2019Ardenne, c\u2019est la Fagne-Famenne-Calestienne qui est maintenant parue, couvrant pr\u00e8s de 80 % de la surface foresti\u00e8re productive de Wallonie.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Le rapport sur l\u2019\u00e9tat de la sant\u00e9 des for\u00eats wallonnes en 2025 de l\u2019OWSF dresse un bilan contrast\u00e9 de la situation sanitaire des massifs forestiers apr\u00e8s une d\u00e9cennie marqu\u00e9e par des extr\u00eames climatiques. 1. Un r\u00e9pit relatif mais une vigilance accrue Apr\u00e8s les crises majeures de 2018 \u00e0 2022, l&rsquo;ann\u00e9e 2025 montre une certaine stabilisation, [&hellip;]<\/p>","protected":false},"featured_media":46402,"template":"","categories":[50],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bilan 2025 de la sant\u00e9 des for\u00eats en Wallonie - 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\/bilan-2025-de-la-sante-des-forets-en-wallonie\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bilan 2025 de la sant\u00e9 des for\u00eats en Wallonie - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Le rapport sur l\u2019\u00e9tat de la sant\u00e9 des for\u00eats wallonnes en 2025 de l\u2019OWSF dresse un bilan contrast\u00e9 de la situation sanitaire des massifs forestiers apr\u00e8s une d\u00e9cennie marqu\u00e9e par des extr\u00eames climatiques. 1. Un r\u00e9pit relatif mais une vigilance accrue Apr\u00e8s les crises majeures de 2018 \u00e0 2022, l&rsquo;ann\u00e9e 2025 montre une certaine stabilisation, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/foretnature.be\/en\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/\" \/>\n<meta property=\"og:site_name\" content=\"For\u00eat.Nature\" \/>\n<meta property=\"og:image\" content=\"https:\/\/foretnature.be\/wp-content\/uploads\/2026\/04\/2755.png\" \/>\n\t<meta property=\"og:image:width\" content=\"900\" \/>\n\t<meta property=\"og:image:height\" content=\"563\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/foretnature.be\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/\",\"url\":\"https:\/\/foretnature.be\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/\",\"name\":\"Bilan 2025 de la sant\u00e9 des for\u00eats en Wallonie - For\u00eat.Nature\",\"isPartOf\":{\"@id\":\"https:\/\/foretnature.be\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/foretnature.be\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/foretnature.be\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/foretnature.be\/wp-content\/uploads\/2026\/04\/2755.png\",\"datePublished\":\"2026-04-13T14:13:34+00:00\",\"dateModified\":\"2026-04-13T14:13:34+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/foretnature.be\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/foretnature.be\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/foretnature.be\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/#primaryimage\",\"url\":\"https:\/\/foretnature.be\/wp-content\/uploads\/2026\/04\/2755.png\",\"contentUrl\":\"https:\/\/foretnature.be\/wp-content\/uploads\/2026\/04\/2755.png\",\"width\":900,\"height\":563},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/foretnature.be\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/foretnature.be\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Bilan 2025 de la sant\u00e9 des for\u00eats en Wallonie\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/foretnature.be\/#website\",\"url\":\"https:\/\/foretnature.be\/\",\"name\":\"For\u00eat.Nature\",\"description\":\"Une \u00e9quipe technique au service de la for\u00eat\",\"publisher\":{\"@id\":\"https:\/\/foretnature.be\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/foretnature.be\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/foretnature.be\/#organization\",\"name\":\"For\u00eat.Nature\",\"url\":\"https:\/\/foretnature.be\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/foretnature.be\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/foretnature.be\/wp-content\/uploads\/2021\/01\/logoFOblanc.png\",\"contentUrl\":\"https:\/\/foretnature.be\/wp-content\/uploads\/2021\/01\/logoFOblanc.png\",\"width\":300,\"height\":151,\"caption\":\"For\u00eat.Nature\"},\"image\":{\"@id\":\"https:\/\/foretnature.be\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Bilan 2025 de la sant\u00e9 des for\u00eats en Wallonie - For\u00eat.Nature","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/foretnature.be\/en\/resume-foret-mail\/bilan-2025-de-la-sante-des-forets-en-wallonie\/","og_locale":"en_GB","og_type":"article","og_title":"Bilan 2025 de la sant\u00e9 des for\u00eats en Wallonie - For\u00eat.Nature","og_description":"Le rapport sur l\u2019\u00e9tat de la sant\u00e9 des for\u00eats wallonnes en 2025 de l\u2019OWSF dresse un bilan contrast\u00e9 de la situation sanitaire des massifs forestiers apr\u00e8s une d\u00e9cennie marqu\u00e9e par des extr\u00eames climatiques. 1. 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