{"id":38620,"date":"2023-02-15T15:02:41","date_gmt":"2023-02-15T14:02:41","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=38620"},"modified":"2023-02-27T10:01:05","modified_gmt":"2023-02-27T09:01:05","slug":"les-arbres-95-bois-5-plastique","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/les-arbres-95-bois-5-plastique\/","title":{"rendered":"Les arbres, 95 % bois, 5 % plastique ?"},"content":{"rendered":"<p>La pr\u00e9sence de plastique dans les \u00e9cosyst\u00e8mes aquatiques est d\u00e9j\u00e0 bien connue mais les \u00e9cosyst\u00e8mes terrestres sont loin d\u2019\u00eatre \u00e9pargn\u00e9s et m\u00eame encore plus pollu\u00e9s, bien que de fa\u00e7on moins visible. Plusieurs \u00e9tudes ont prouv\u00e9 la pr\u00e9sence de microplastiques dans des plantes agricoles et montr\u00e9 certains effets sur leur croissance ou des d\u00e9rangements des communaut\u00e9s microbiennes. Doit-on s\u2019attendre \u00e0 des r\u00e9sultats similaires sur les arbres ?<\/p>\n<p>Le bouleau \u00e9tant d\u00e9j\u00e0 connu pour ses capacit\u00e9s de d\u00e9pollution des sols, par exemple sur les m\u00e9taux lourds, un test a \u00e9t\u00e9 effectu\u00e9 avec des bouleaux au stade juv\u00e9nile et des particules de polyamide entre 5 et 50 microm\u00e8tres. Il en ressort que :<\/p>\n<ul>\n<li>En 5 mois seulement, des microplastiques ont \u00e9t\u00e9 retrouv\u00e9s dans certains tissus racinaires<\/li>\n<li>La taille des particules capt\u00e9es par le bouleau (entre 5 et 10 microm\u00e8tres) sugg\u00e8re qu\u2019elle pourrait \u00eatre un facteur limitant<\/li>\n<li>Le mode de d\u00e9placement des microplastiques reste encore inconnu malgr\u00e9 certaines hypoth\u00e8ses<\/li>\n<\/ul>\n<p>Des recherches suppl\u00e9mentaires doivent \u00eatre men\u00e9es pour analyser les capacit\u00e9s du bouleau et d\u2019autres arbres \u00e0 d\u00e9polluer les sols des particules plastiques et des cons\u00e9quences qu\u2019elles peuvent avoir sur les plantes elles-m\u00eames.<\/p>","protected":false},"excerpt":{"rendered":"<p>La pr\u00e9sence de plastique dans les \u00e9cosyst\u00e8mes aquatiques est d\u00e9j\u00e0 bien connue mais les \u00e9cosyst\u00e8mes terrestres sont loin d\u2019\u00eatre \u00e9pargn\u00e9s et m\u00eame encore plus pollu\u00e9s, bien que de fa\u00e7on moins visible. Plusieurs \u00e9tudes ont prouv\u00e9 la pr\u00e9sence de microplastiques dans des plantes agricoles et montr\u00e9 certains effets sur leur croissance ou des d\u00e9rangements des communaut\u00e9s [&hellip;]<\/p>","protected":false},"featured_media":38621,"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>Les arbres, 95 % bois, 5 % plastique ? - 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\/les-arbres-95-bois-5-plastique\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les arbres, 95 % bois, 5 % plastique ? - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"La pr\u00e9sence de plastique dans les \u00e9cosyst\u00e8mes aquatiques est d\u00e9j\u00e0 bien connue mais les \u00e9cosyst\u00e8mes terrestres sont loin d\u2019\u00eatre \u00e9pargn\u00e9s et m\u00eame encore plus pollu\u00e9s, bien que de fa\u00e7on moins visible. 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