{"id":60462,"date":"2021-06-16T18:41:00","date_gmt":"2021-06-16T15:41:00","guid":{"rendered":"http:\/\/life.karpat.in.ua\/?p=60462"},"modified":"2021-06-16T10:13:12","modified_gmt":"2021-06-16T07:13:12","slug":"felfedeztek-sziberia-legregibb-orokke-fagyott-talajat","status":"publish","type":"post","link":"https:\/\/life.karpat.in.ua\/?p=60462&lang=hu","title":{"rendered":"Felfedezt\u00e9k Szib\u00e9ria legr\u00e9gibb \u00f6r\u00f6kk\u00e9 fagyott talaj\u00e1t"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"http:\/\/life.karpat.in.ua\/wp-content\/uploads\/2021\/06\/1480326939-4458-px-talkessel-von-werchojansk.jpg\" alt=\"\" class=\"wp-image-60464\" srcset=\"https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2021\/06\/1480326939-4458-px-talkessel-von-werchojansk.jpg 800w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2021\/06\/1480326939-4458-px-talkessel-von-werchojansk-300x225.jpg 300w, https:\/\/life.karpat.in.ua\/wp-content\/uploads\/2021\/06\/1480326939-4458-px-talkessel-von-werchojansk-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><strong>Felfedezte Szib\u00e9ria legr\u00e9gibb permafroszt (\u00f6r\u00f6kk\u00e9 fagyott) talaj\u00e1t egy nemzetk\u00f6zi kutat\u00f3csoport. Az 50 m\u00e9ter m\u00e9lyen fekv\u0151 talajr\u00e9teg 650 ezer \u00e9ve fagyhatott meg &#8211; k\u00f6z\u00f6lte a bremerhaveni Alfred Wegener Int\u00e9zet (AWI) kedden.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A Helmholtz Sarkvid\u00e9k- \u00e9s Tengerkutat\u00f3 Int\u00e9zet szak\u00e9rt\u0151i szerint a felfedez\u00e9s nagy jelent\u0151s\u00e9ggel b\u00edr, hiszen azt jelenti, hogy a permafroszt m\u00e9g a legmelegebb id\u0151szakokban sem olvadt fel teljesen. A vizsg\u00e1lt r\u00e9teg nyilv\u00e1nval\u00f3an kib\u00edrta azt a 130 ezer \u00e9vvel ezel\u0151tti, k\u00fcl\u00f6n\u00f6sen meleg id\u0151szakot is, amikor az \u00c9szaki-sarkvid\u00e9ken nyaranta 4-5 Celsius-fokkal melegebb volt, mint most.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00e1sr\u00e9szt a kelet-szib\u00e9riai Batagaz k\u00f6zel\u00e9ben tal\u00e1lt lelet arra is r\u00e1vil\u00e1g\u00edt, milyen \u00e9rz\u00e9kenyen \u00e9rintheti a permafrosztot az emberi tev\u00e9kenys\u00e9g. A 650 ezer \u00e9ves permafroszt r\u00e9tegre ugyanis egy hegyoldalban bukkantak, amelynek egy r\u00e9sz\u00e9n az 1940-es \u00e9s 1960-as \u00e9vekben kiv\u00e1gt\u00e1k az erd\u0151t, a ter\u00fcleten a k\u00f6zeli b\u00e1nya s\u00falyos l\u00e1nctalpas j\u00e1rm\u0171vei is k\u00f6zlekedtek. \u00cdgy elpusztult a v\u00e9d\u0151 \u00e9s izol\u00e1l\u00f3 n\u00f6v\u00e9nytakar\u00f3, aminek k\u00f6vetkezt\u00e9ben a felsz\u00edni, fiatalabb permafroszt ny\u00e1ron elolvadt, a talaj v\u00e9g\u00fcl megcs\u00faszott, \u00e9s felsz\u00ednre ker\u00fclt a r\u00e9gebbi permafroszt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A k\u00e1rok helyre\u00e1ll\u00edthatatlanok, mert a szabadon fekv\u0151 permafroszt minden ny\u00e1ron \u00fajra felolvad. Az elm\u00falt 50 \u00e9vben a hegyoldal cs\u00fasz\u00e1sa 900 m\u00e9teres sz\u00e9less\u00e9g\u0171re terjedt ki &#8211; mondta Thomas Opel, az AWI kutat\u00f3ja.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A permafroszt f\u00f6ld \u00e9s k\u0151zet elegye, ak\u00e1r t\u00f6bb sz\u00e1z m\u00e9ter m\u00e9lyre ny\u00falhat. Els\u0151sorban \u00c9szak-Amerik\u00e1ban \u00e9s Szib\u00e9ri\u00e1ban tal\u00e1lhat\u00f3 meg, de magashegys\u00e9gekben is el\u0151fordul.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d3ri\u00e1si m\u00e9lyh\u0171t\u0151k\u00e9nt nagy mennyis\u00e9g\u0171 elhalt biomassz\u00e1t \u0151riz, els\u0151sorban n\u00f6v\u00e9nyi r\u00e9szeket, de a legut\u00f3bbi j\u00e9gkorszakban \u00e9lt \u00e1llatok, p\u00e9ld\u00e1ul mamutok \u00e9s gyapjas orrszarv\u00fak maradv\u00e1nyait is.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ha a permafroszt felolvad, olyan bakt\u00e9riumok aktiviz\u00e1l\u00f3dhatnak, melyek az \u0151si biomassz\u00e1t lebontj\u00e1k \u00e9s anyagcser\u00e9j\u00fck r\u00e9v\u00e9n sz\u00e9n-dioxidot \u00e9s met\u00e1nt szabad\u00edtanak fel. A kl\u00edmav\u00e1ltoz\u00e1s miatt att\u00f3l tartanak a szak\u00e9rt\u0151k, hogy ezzel az \u00fcvegh\u00e1zhat\u00e1s is feler\u0151s\u00f6dhet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Forr\u00e1s: portfolio.hu<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Felfedezte Szib\u00e9ria legr\u00e9gibb permafroszt (\u00f6r\u00f6kk\u00e9 fagyott) talaj\u00e1t egy nemzetk\u00f6zi kutat\u00f3csoport. Az 50 m\u00e9ter m\u00e9lyen fekv\u0151 talajr\u00e9teg 650 ezer \u00e9ve fagyhatott meg &#8211; k\u00f6z\u00f6lte a bremerhaveni Alfred Wegener Int\u00e9zet (AWI) kedden.<\/p>\n","protected":false},"author":4,"featured_media":60464,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,41,49,598,39],"tags":[55041,9793],"class_list":["post-60462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-nap-hirei","category-cikkek","category-hirek","category-tudomany","category-vilag","tag-legregibb-orokke-fagyott-talaj","tag-sziberia"],"_links":{"self":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/60462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=60462"}],"version-history":[{"count":0,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/posts\/60462\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=\/wp\/v2\/media\/60464"}],"wp:attachment":[{"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=60462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=60462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/life.karpat.in.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=60462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}