{"id":6419,"date":"2020-02-27T00:00:00","date_gmt":"2020-02-26T23:00:00","guid":{"rendered":"https:\/\/instrid.sk\/uncategorized\/arktida-zelenie-je-to-zla-sprava-pre-vsetkych\/"},"modified":"2020-02-27T00:00:00","modified_gmt":"2020-02-26T23:00:00","slug":"arktida-zelenie-je-to-zla-sprava-pre-vsetkych","status":"publish","type":"post","link":"https:\/\/instrid.sk\/en\/archiv\/arktida-zelenie-je-to-zla-sprava-pre-vsetkych\/","title":{"rendered":"Arkt\u00edda zelenie, je to zl\u00e1 spr\u00e1va pre v\u0161etk\u00fdch"},"content":{"rendered":"

Tituln\u00e1 fotografia \u010dl\u00e1nku: JEFF KERBY\/NATIONAL GEOGRAPHIC SOCIETY pre Wired<\/em><\/p>\n

Arkt\u00edda sa v s\u00fa\u010dasnosti otep\u013euje dvakr\u00e1t tak r\u00fdchlo ako in\u00e9 \u010dasti sveta<\/strong>, za\u010d\u00edna magaz\u00edn Wired svoj \u010dl\u00e1nok The Arctic Is Getting Greener<\/em>. Upozor\u0148uje, \u017ee sa top\u00ed aj permafrost a objavil sa tam aj blesk – fenom\u00e9n typick\u00fd pre ni\u017e\u0161ie situovan\u00e9 lokality plan\u00e9ty. Objavuje sa \u00fadajne iba sto m\u00ed\u013e od severn\u00e9ho p\u00f3lu.<\/p>\n

Novinkou sa tie\u017e ukazuje rozvoj rastlinn\u00e9ho \u017eivota, ktor\u00fd je prirodzen\u00fdm d\u00f4sledkom otep\u013eovania. Pre\u010do je to zl\u00e1 spr\u00e1va, ke\u010f by mal by\u0165 rozvoj \u017eivota priazniv\u00fdm javom?<\/p>\n

\n

Pr\u00e1ve rastliny a ich bujnenie s\u00fa zodpovedn\u00e9 za to, \u017ee satelitn\u00e9 sn\u00edmky Arkt\u00eddy vidite\u013ene zelenej\u00fa. Zelen\u00e9 plochy s\u00fa oblasti s veget\u00e1ciou, \u00fadajne na miestach a mno\u017estv\u00e1ch, ktor\u00e9 nie s\u00fa pre lokalitu prirodzen\u00e9. Tento jav sa anglicky naz\u00fdva \u201eArctic greening\u201c a je indik\u00e1torom glob\u00e1lneho otep\u013eovania.<\/p>\n

Napriek svojej reput\u00e1cii chladn\u00e9ho miesta bez \u017eivota Arkt\u00edda v skuto\u010dnosti bez \u017eivota nie je. Rastie tu preva\u017ene veget\u00e1cia, ale aj \u017eij\u00fa zvierat\u00e1, v\u00e4\u010d\u0161ie i men\u0161ie. Rastliny maj\u00fa ve\u013emi \u0161pecifick\u00fa vlastnos\u0165: maj\u00fa asi iba jeden mesiac v roku na to, aby pre\u017eili, dostato\u010dne vyr\u00e1stli a reprodukovali sa.<\/p>\n

Ako sa svet postupne otep\u013euje, satelity pozoruj\u00fa \u010doraz zelen\u0161ie plochy na Arkt\u00edde. Niektor\u00e9 satelity maj\u00fa rozl\u00ed\u0161enie porovnate\u013en\u00e9 s futbalov\u00fdm \u0161tadi\u00f3nom, in\u00e9 dok\u00e1\u017eu rozl\u00ed\u0161i\u0165 plochu 10\u00d710 metrov. Ich uplatnenie je nepopierate\u013en\u00e9, ale vedcom pom\u00e1haj\u00fa aj drony, ktor\u00e9 dok\u00e1\u017eu by\u0165 presnej\u0161ie, pokia\u013e ide o sn\u00edmanie relat\u00edvne mal\u00fdch pl\u00f4ch. Tituln\u00e1 fotografia \u010dl\u00e1nku je zhotoven\u00e1 pr\u00e1ve nimi. Okrem toho sa na hodnotenie zmien mikrokl\u00edmy v jednotliv\u00fdch lokalit\u00e1ch pou\u017e\u00edvaj\u00fa aj \u010dajov\u00e9 vreck\u00e1 – vedci sleduj\u00fa ich prirodzen\u00fd rozpad.<\/p>\n

V\u00fdsledky v\u00fdskumov hovoria, \u017ee permafrost sa top\u00ed a do prostredia uvo\u013e\u0148uje uhl\u00edk, ktor\u00fd sa v \u0148om nahromadil za tis\u00edce rokov. Jeho uvo\u013e\u0148ovanie (a jeho oxidov a met\u00e1nu) do prostredia pod vplyvom topenia znamen\u00e1 otep\u013eovanie lokality.<\/p>\n

Topenie permafrostu okrem toho do p\u00f4dy uvo\u013e\u0148uje vodu, ktor\u00e1 op\u00e4\u0165 podporuje rast rastlinn\u00e9ho \u017eivota.<\/p>\n

A napokon jedn\u00fdm z d\u00f4sledkov bujnenia veget\u00e1cie je \u010fal\u0161ie otep\u013eovanie, hoci iba ve\u013emi mierne. Veget\u00e1cia je tmav\u0161ia ako sneh, preto absorbuje viac \u017eiarenia, teda aj tepla.<\/p>\n

V\u00e4\u010d\u0161ina ekosyst\u00e9mu Arkt\u00eddy je pritom pod zemou: a\u017e 80 percent v\u0161etkej biomasy. To, \u017ee vid\u00edme zelena\u0165 sa povrch, je doslova iba \u0161pi\u010dkou \u013eadovca – ak bude topenie napredova\u0165 na\u010falej, \u010do s najv\u00e4\u010d\u0161ou pravdepodobnos\u0165ou bude, budeme svedkami rap\u00eddneho zelenania sa Arkt\u00eddy nielen zhora, ale aj z poh\u013eadu \u010dloveka.<\/p>\n

Hoci sa na prv\u00fd poh\u013ead m\u00f4\u017ee zda\u0165, \u017ee n\u00e1s zelenanie sa povrchu Arkt\u00eddy nemus\u00ed zauj\u00edma\u0165, v skuto\u010dnosti by malo. Oblas\u0165 je indik\u00e1torom celosvetov\u00e9ho otep\u013eovania a topenie \u013eadu na p\u00f3loch vyvol\u00e1 re\u0165azov\u00e9 reakcie naprie\u010d celou plan\u00e9tou, od st\u00fapania hladiny oce\u00e1nov cez vymieranie koralov a\u017e po prudk\u00e9 zmeny po\u010dasia, ktor\u00e9 bud\u00fa pusto\u0161i\u0165 mest\u00e1 a zab\u00edja\u0165 \u013eud\u00ed.<\/p>\n

Nie v\u017edy je zelen\u00e1 dobr\u00e1<\/em>, uv\u00e1dza Matt Simon na z\u00e1ver svojho pr\u00edspevku pre The Wired.<\/p>\n

Permafrost<\/strong> (z angl. permanently + frost – trvalo zamrznut\u00fd) je geologick\u00fd term\u00edn ozna\u010duj\u00faci dlhodobo zamrznut\u00e9 povrchov\u00e9 oblasti, kde doba zamrznutia je dva a viac rokov. Permafrost je oblas\u0165 s trvalo zamrznutou p\u00f4dnou vodou, bez, alebo s minim\u00e1lnym rastlinn\u00fdm porastom. ZDROJ: WIKI<\/sup><\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Vedci v\u010faka dronom a satelitom na obe\u017enej dr\u00e1he sleduj\u00fa Arkt\u00eddu, ako sa st\u00e1va \u010doraz zelen\u0161ou. Je to nepriazniv\u00e1 spr\u00e1va pre regi\u00f3n, ale aj cel\u00fa plan\u00e9tu.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51],"tags":[],"class_list":["post-6419","post","type-post","status-publish","format-standard","hentry","category-archiv","two-columns"],"_links":{"self":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/posts\/6419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/comments?post=6419"}],"version-history":[{"count":0,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/posts\/6419\/revisions"}],"wp:attachment":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/media?parent=6419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/categories?post=6419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/tags?post=6419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}