{"id":41159,"date":"2024-07-10T11:55:28","date_gmt":"2024-07-10T09:55:28","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=41159"},"modified":"2024-07-10T13:19:58","modified_gmt":"2024-07-10T11:19:58","slug":"les-coups-de-chaleur-en-ville-quand-reverdir-est-synonyme-de-rafraichir","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/les-coups-de-chaleur-en-ville-quand-reverdir-est-synonyme-de-rafraichir\/","title":{"rendered":"Les coups de chaleur en ville, quand reverdir est synonyme de rafra\u00eechir"},"content":{"rendered":"<p>Sous l\u2019effet des changements climatiques, les coups de chaleur extr\u00eames sont de plus en plus courants. Les dangers pour la sant\u00e9 humaine sont multiples avec parfois des issues funestes. Ces \u00e9v\u00e8nements climatiques posent donc un r\u00e9el probl\u00e8me de sant\u00e9 publique, encore plus dans les zones urbaines qui repr\u00e9sentent de v\u00e9ritables points chauds.<\/p>\n<p>Une \u00e9quipe de chercheurs de l\u2019universit\u00e9 de Gand s\u2019est attel\u00e9e \u00e0 mesurer les variations de microclimat dans les rues d\u2019Ekkergem (un quartier de Gand) sous des niveaux de couvert variables durant le printemps et l\u2019\u00e9t\u00e9 2022.<\/p>\n<p>Sur les 195 jours de mesures, il a \u00e9t\u00e9 remarqu\u00e9 que la canop\u00e9e des arbres pouvait r\u00e9duire significativement la temp\u00e9rature ressentie en journ\u00e9e par rapport \u00e0 des zones d\u00e9couvertes (en moyenne 5,5 \u00b0C et jusqu\u2019\u00e0 8,8 \u00b0C durant les journ\u00e9es les plus extr\u00eames). Durant la nuit, l\u2019effet positif du couvert est cependant beaucoup moins marqu\u00e9. Sous les diff\u00e9rents niveaux de couvert de l\u2019\u00e9tude, les modalit\u00e9s avec des arbres sont les plus efficaces pour tamponner les temp\u00e9ratures en ville en p\u00e9riode de forte chaleur m\u00eame si d\u2019autres exp\u00e9riences ont d\u00e9j\u00e0 montr\u00e9 un l\u00e9ger effet inverse dans des cas bien pr\u00e9cis.<\/p>\n<p>Les r\u00e9sultats observ\u00e9s par les chercheurs de Gand concordent avec ceux d\u2019autres \u00e9tudes sur le sujet. D\u2019importants b\u00e9n\u00e9fices sont \u00e0 attendre dans les villes o\u00f9 la r\u00e8gle des 3-30-300 est respect\u00e9e : chaque r\u00e9sident doit voir au moins 3 arbres depuis son domicile, le voisinage doit comporter au minimum 30% de couvert par la canop\u00e9e des arbres, et un espace vert d\u2019au moins 0,5 hectare doit \u00eatre \u00e0 maximum 300 m\u00e8tres de la r\u00e9sidence.<\/p>","protected":false},"excerpt":{"rendered":"<p>Sous l\u2019effet des changements climatiques, les coups de chaleur extr\u00eames sont de plus en plus courants. Les dangers pour la sant\u00e9 humaine sont multiples avec parfois des issues funestes. Ces \u00e9v\u00e8nements climatiques posent donc un r\u00e9el probl\u00e8me de sant\u00e9 publique, encore plus dans les zones urbaines qui repr\u00e9sentent de v\u00e9ritables points chauds. Une \u00e9quipe de [&hellip;]<\/p>","protected":false},"featured_media":41171,"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 coups de chaleur en ville, quand reverdir est synonyme de rafra\u00eechir - 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-coups-de-chaleur-en-ville-quand-reverdir-est-synonyme-de-rafraichir\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les coups de chaleur en ville, quand reverdir est synonyme de rafra\u00eechir - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Sous l\u2019effet des changements climatiques, les coups de chaleur extr\u00eames sont de plus en plus courants. Les dangers pour la sant\u00e9 humaine sont multiples avec parfois des issues funestes. Ces \u00e9v\u00e8nements climatiques posent donc un r\u00e9el probl\u00e8me de sant\u00e9 publique, encore plus dans les zones urbaines qui repr\u00e9sentent de v\u00e9ritables points chauds. 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