{"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\/hu\/disappearing_forests\/","title":{"rendered":"Az elt\u0171n\u0151 erd\u0151k"},"content":{"rendered":"
\n

Az erd\u0151k a F\u00f6ld sz\u00e1razf\u00f6ldi ter\u00fclet\u00e9nek csaknem egyharmad\u00e1t bor\u00edtj\u00e1k. Sok k\u00f6z\u00fcl\u00fck olyan hatalmas, hogy azok felt\u00e9rk\u00e9pez\u00e9s\u00e9re \u00e9s tanulm\u00e1nyoz\u00e1s\u00e1ra csak az \u0171rb\u0151l van lehet\u0151s\u00e9g.<\/p>\n<\/div>\n

Az erd\u0151k nem csup\u00e1n \u00e9rt\u00e9kes fa- \u00e9s t\u00fczel\u0151anyag-forr\u00e1sok, hanem sz\u00e1mos n\u00f6v\u00e9ny- \u00e9s \u00e1llatfajnak is otthont adnak.<\/p>\n

A f\u00e1k emellett megakad\u00e1lyozz\u00e1k, hogy a sz\u00e9l \u00e9s az es\u0151 elmosassa a talajt, befoly\u00e1solj\u00e1k a helyi \u00e9ghajlatot, \u00e9s a sz\u00e9n-dioxid-megk\u00f6t\u00e9s r\u00e9v\u00e9n lass\u00edtj\u00e1k az \u00e9ghajlatv\u00e1ltoz\u00e1st.<\/p>\n

Sajnos az erd\u0151k gyorsan zsugorodnak. \u00c9vente hatalmas ter\u00fcleteket puszt\u00edt el az emberi tev\u00e9kenys\u00e9g.<\/p>\n

Ahogy a F\u00f6ld felett rep\u00fclnek, a m\u0171holdak n\u00e9h\u00e1ny nap alatt r\u00e9szletes k\u00e9pet k\u00e9sz\u00edthetnek egy eg\u00e9sz erd\u0151r\u0151l. Ezek jelentik az egyetlen gyors \u00e9s egyszer\u0171 m\u00f3dszert a folyamatosan v\u00e1ltoz\u00f3 erd\u0151k felt\u00e9rk\u00e9pez\u00e9s\u00e9re, \u00e9s rendszeres friss\u00edt\u00e9seket ny\u00fajtanak azok \u00e1llapot\u00e1r\u00f3l.<\/p>\n

\"Deforestation
Az erd\u0151irt\u00e1s Rond\u00f3ni\u00e1ban, Braz\u00edli\u00e1ban<\/figcaption><\/figure>\n

Az ESA ERS \u00e9s Envisat \u0171reszk\u00f6zei olyan k\u00e9palkot\u00f3 radart hordoznak, amely a felh\u0151k\u00f6n kereszt\u00fcl is k\u00e9pes \u00e9rz\u00e9kelni a sz\u00e1razf\u00f6ldi felsz\u00ednen bek\u00f6vetkez\u0151 v\u00e1ltoz\u00e1sokat.<\/p>\n

A n\u00f6v\u00e9nyek n\u00f6veked\u00e9s\u00e9nek vizsg\u00e1lat\u00e1hoz \u00e9s a fel\u00fcleti h\u0151m\u00e9rs\u00e9klet m\u00e9r\u00e9s\u00e9hez l\u00e1that\u00f3-infrav\u00f6r\u00f6s szkennert haszn\u00e1lnak. A k\u00e9sz\u00fcl\u00e9k emellett \u00e9szleli a mez\u0151ket megtiszt\u00edt\u00f3 t\u00fczeket is.<\/p>\n

A m\u0171holdak ak\u00e1r a k\u00fcl\u00f6nb\u00f6z\u0151 fafajokat is k\u00e9pesek megk\u00fcl\u00f6nb\u00f6ztetni, \u00e9s megmutatni, mennyire eg\u00e9szs\u00e9gesek.<\/p>\n

A m\u0171holdas felv\u00e9teleken alapul\u00f3 t\u00e9rk\u00e9pek seg\u00edtenek a vezet\u0151knek \u00e9s a helyi hat\u00f3s\u00e1goknak a fogyatkoz\u00f3 erd\u0151k v\u00e9delm\u00e9ben \u00e9s meg\u0151rz\u00e9s\u00e9ben.<\/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\/hu\/wp-json\/wp\/v2\/posts\/1124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/comments?post=1124"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/1124\/revisions"}],"predecessor-version":[{"id":4860,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/1124\/revisions\/4860"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=1124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=1124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=1124"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=1124"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=1124"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=1124"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=1124"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=1124"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=1124"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=1124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}