{"id":1124,"date":"2004-12-03T10:09:00","date_gmt":"2004-12-03T09:09:00","guid":{"rendered":"https:\/\/kids.esa.int\/disappearing_forests\/"},"modified":"2026-10-08T00:36:16","modified_gmt":"2026-10-07T22:36:16","slug":"disappearing_forests","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/disappearing_forests\/","title":{"rendered":"Disparition des for\u00eats"},"content":{"rendered":"
\n

Les for\u00eats couvrent pr\u00e8s d'un tiers de la surface terrestre. Bon nombre d'entre elles sont si vastes que la seule fa\u00e7on de les cartographier et de les \u00e9tudier est de le faire depuis l'espace.<\/p>\n<\/div>\n

Les for\u00eats sont non seulement des sources appr\u00e9ciables de bois et de carburant, mais aussi l'habitat naturel de nombreuses esp\u00e8ces de plantes et d'animaux.<\/p>\n

Les arbres arr\u00eatent aussi les vents et la pluie qui \u00e9rode les sols, ils modifient localement le climat et ralentissent les variations climatiques en stockant le carbone.<\/p>\n

Malheureusement, les for\u00eats se r\u00e9duisent rapidement. Chaque ann\u00e9e, des zones immenses sont d\u00e9truites par les activit\u00e9s humaines.<\/p>\n

Lors de leur vol au-dessus de nos t\u00eates, les satellites peuvent avoir une vue d\u00e9taill\u00e9e d\u2019une for\u00eat tout enti\u00e8re en quelques jours. Ils sont la seule source rapide et facile de cartes des for\u00eats en \u00e9volution permanente et permettent d\u2019obtenir des mises \u00e0 jour r\u00e9guli\u00e8res de leur \u00e9tat.<\/p>\n

\"Deforestation
La d\u00e9forestation dans l'\u00c9tat de Rond\u00f4nia, au Br\u00e9sil<\/figcaption><\/figure>\n

Les engins spatiaux ERS et Envisat de l\u2019ESA transportent un radar d'imagerie capable de voir \u00e0 travers les nuages pour d\u00e9celer les changements \u00e0 la surface du sol.<\/p>\n

Un scanner visible-infrarouge permet d'\u00e9tudier la croissance des plantes et de mesurer les temp\u00e9ratures de surface. Ils d\u00e9tectent aussi les incendies cr\u00e9\u00e9s pour d\u00e9boiser.<\/p>\n

Les satellites peuvent m\u00eame d\u00e9celer diff\u00e9rents types d'arbres et savoir s'ils sont en bonne sant\u00e9.<\/p>\n

Les cartes bas\u00e9es sur les images des satellites aident les administrateurs et les autorit\u00e9s locales \u00e0 prot\u00e9ger et pr\u00e9server les for\u00eats menac\u00e9es.<\/p>","protected":false},"excerpt":{"rendered":"

Forests cover almost a third of world’s land surface. Many of them are so vast that the only way to map and study them is from space. Forests are not […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2004\/12\/deforastation_012\/17890539-2-eng-GB\/deforastation_01.jpg","esa_banner_description":"","esa_banner_credit":"AP Photo\/Lynne Slandky","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/deforastation_012","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[42,10,43],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1124","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-protecting-earth","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=1124"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1124\/revisions"}],"predecessor-version":[{"id":4860,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1124\/revisions\/4860"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1124"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1124"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1124"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1124"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1124"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1124"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1124"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}