{"id":6655,"date":"2020-11-16T00:00:00","date_gmt":"2020-11-15T23:00:00","guid":{"rendered":"https:\/\/instrid.sk\/uncategorized\/zalesnovanie-uhlikova-neutralita-v-cine\/"},"modified":"2020-11-16T00:00:00","modified_gmt":"2020-11-15T23:00:00","slug":"zalesnovanie-uhlikova-neutralita-v-cine","status":"publish","type":"post","link":"https:\/\/instrid.sk\/en\/archiv\/zalesnovanie-uhlikova-neutralita-v-cine\/","title":{"rendered":"\u010c\u00ednske lesy absorbuj\u00fa ove\u013ea viac uhl\u00edka, ako si vedci mysleli. U\u017e maj\u00fa presn\u00e9 \u010d\u00edsla"},"content":{"rendered":"

\u24d8 Pracujeme iba s d\u00f4veryhodn\u00fdmi zdrojmi: bbc.com a nature.com<\/em><\/strong><\/span><\/p>\n

 <\/p>\n

Medzin\u00e1rodn\u00fd t\u00edm identifikoval dve oblasti v krajine, kde bola podhodnoten\u00e1 miera absorpcie oxidu uhli\u010dit\u00e9ho nov\u00fdmi lesmi.<\/p>\n

Dohromady tieto oblasti tvoria nie\u010do viac ako 35% z celkov\u00e9ho mno\u017estva uhl\u00edka v celej \u010c\u00edne, tvrd\u00ed skupina.<\/p>\n

Anal\u00fdza vedcov zalo\u017een\u00e1 na pozemn\u00fdch a satelitn\u00fdch pozorovaniach bola publikovan\u00e1 v \u010dasopise Nature.<\/p>\n

Takzvan\u00fd uhl\u00edkov\u00fd z\u00e1chyt je ak\u00fdko\u013evek rezervo\u00e1r, napr\u00edklad ra\u0161elinisk\u00e1 alebo lesy, ktor\u00fd absorbuje viac uhl\u00edka, ne\u017e ho uvo\u013en\u00ed, \u010d\u00edm zni\u017euje koncentr\u00e1ciu CO2 v atmosf\u00e9re.<\/p>\n

\u010c\u00edna je najv\u00e4\u010d\u0161\u00edm zdrojom oxidu uhli\u010dit\u00e9ho produkovan\u00e9ho \u010dlovekom na svete a je zodpovedn\u00e1 za pribli\u017ene 28% svetov\u00fdch emisi\u00ed.<\/p>\n

Ned\u00e1vno v\u0161ak \u010d\u00ednsky prezident Si \u0164in-pching predstavil z\u00e1mer stabilizova\u0165 tieto emisie e\u0161te pred rokom 2030 a potom prejs\u0165 k uhl\u00edkovej neutralite do roku 2060.<\/p>\n

Detaily toho, ako m\u00e1 krajina dosiahnu\u0165 tieto ciele, zatia\u013e nie s\u00fa jasn\u00e9, ale nevyhnutne musia zah\u0155\u0148a\u0165 nielen hlbok\u00e9 zn\u00ed\u017eenie spotreby fos\u00edlnych pal\u00edv, ale aj sp\u00f4soby, ako doslova vytiahnu\u0165 uhl\u00edk z atmosf\u00e9ry. A to sa d\u00e1 dosiahnu\u0165 v\u00fdsadbou nov\u00fdch lesov.<\/p>\n

Zvy\u0161uj\u00faca sa zalesnenos\u0165 \u010c\u00edny je zrejm\u00e1 u\u017e nejak\u00fd \u010das. V posledn\u00fdch desa\u0165ro\u010diach boli vysaden\u00e9 miliardy stromov, ktor\u00e9 sl\u00fa\u017eia na boj proti dezertifik\u00e1cii a strate p\u00f4dy a na vytvorenie \u017eiv\u00e9ho drev\u00e1rskeho a papierensk\u00e9ho priemyslu.<\/p>\n

Nov\u00e1 vy\u0161\u0161ie uveden\u00e1 \u0161t\u00fadia spres\u0148uje odhady, ko\u013eko CO2 by v\u0161etky tieto stromy navy\u0161e mohli pri raste pohlti\u0165.<\/p>\n

Posledn\u00e1 anal\u00fdza sk\u00famala mno\u017estvo zdrojov \u00fadajov. Zah\u0155\u0148ali lesn\u00edcke z\u00e1znamy, satelitn\u00e9 dia\u013ekov\u00e9 meranie vegeta\u010dnej zelene, dostupnos\u0165 p\u00f4dnej vody a pozorovania CO2, op\u00e4\u0165 z vesm\u00edru, ale aj z priameho vzorkovania vzduchu na \u00farovni zeme.<\/p>\n

Zistilo sa, \u017ee dve predt\u00fdm nedocenen\u00e9 oblasti zachyt\u00e1vania uhl\u00edka s\u00fa s\u00fastreden\u00e9 na juhoz\u00e1pade \u010c\u00edny, v provinci\u00e1ch Yunnan, Guizhou a Guangxi; a jeho severov\u00fdchod, najm\u00e4 provincie Heilongjiang a Jilin.<\/p>\n

Pozemsk\u00e1 biosf\u00e9ra nad juhoz\u00e1padnou \u010c\u00ednou, ktor\u00e1 je jednozna\u010dne najv\u00e4\u010d\u0161ou oblas\u0165ou absorpcie, m\u00e1 schopnos\u0165 absorbova\u0165 0,35 miliardy ton uhl\u00edka ro\u010dne, \u010do predstavuje 31,5% \u010d\u00ednskej pozemnej absorbcie uhl\u00edka.<\/p>\n

Vedci tvrdia, \u017ee suchozemsk\u00e1 biosf\u00e9ra nad severov\u00fdchodom \u010c\u00edny je sez\u00f3nna, tak\u017ee po\u010das vegeta\u010dn\u00e9ho obdobia absorbuje uhl\u00edk, ale inak ho emituje. Jeho \u010dist\u00fd ro\u010dn\u00fd zostatok je zhruba -0,05 miliardy ton uhl\u00edka ro\u010dne, \u010do predstavuje asi 4,5% \u010d\u00ednskeho p\u00f4dneho uhl\u00edka.<\/p>\n

Aby sme dali tieto \u010d\u00edsla do s\u00favislosti, skupina vedcov dod\u00e1va, \u017ee \u010c\u00edna v d\u00f4sledku pou\u017eitia fos\u00edlnych pal\u00edv v roku 2017 emitovala 2,67 miliardy ton uhl\u00edka.<\/p>\n

Niektor\u00ed vedci v\u0161ak z\u00e1rove\u0148 upozor\u0148uj\u00fa, \u017ee samotn\u00e9 zales\u0148ovanie nemus\u00ed by\u0165 dlhodob\u00fdm rie\u0161en\u00edm pre absorbciu uhl\u00edka. Profesor Shaun Quegan<\/strong> z univerzity v Sheffielde vo Ve\u013ekej Brit\u00e1nii \u0161tuduje uhl\u00edkov\u00fa rovnov\u00e1hu Zeme, ale nebol zapojen\u00fd do tohto v\u00fdskumu.<\/p>\n

Pre BBC pripomenul, \u017ee schopnos\u0165 nov\u00fdch lesov \u010derpa\u0165 uhl\u00edk kles\u00e1 s t\u00fdm, ako kles\u00e1 r\u00fdchlos\u0165 jeho rastu a syst\u00e9my sa pos\u00favaj\u00fa k stabilnej\u0161iemu stavu.<\/p>\n

Profesor Quegan je ved\u00facim vedcom nadch\u00e1dzaj\u00facej eur\u00f3pskej vesm\u00edrnej misie, radarov\u00e9ho satelitu, ktor\u00fd bude mera\u0165 lesy z obe\u017enej dr\u00e1hy. Bude schopn\u00fd zisti\u0165, kde presne sa uhl\u00edk uklad\u00e1, \u010di u\u017e v kme\u0148och stromov, v p\u00f4de alebo niekde inde.<\/p>\n

\u010eal\u0161\u00edm d\u00f4le\u017eit\u00fdm bud\u00facim satelitn\u00fdm projektom v tejto s\u00favislosti je pl\u00e1novan\u00e1 misia EU Sentinel (v s\u00fa\u010dasnosti s k\u00f3dov\u00fdm ozna\u010den\u00edm CO2M) na meranie CO2 v atmosf\u00e9re s ve\u013emi vysok\u00fdm rozl\u00ed\u0161en\u00edm.<\/p>\n

Richard Black, <\/strong>riadite\u013e Energetickej a klimatickej spravodajskej jednotky (ECIU), neziskov\u00e9ho think-tanku pracuj\u00faceho v oblasti zmeny podnebia a energetiky, pre BBC pripomenul, \u017ee \u010c\u00edna by sa nemala uspokoji\u0165 iba so zales\u0148ovan\u00edm a \u017ee sa nejedn\u00e1 o jednoduch\u00fd sp\u00f4sob, ako dosiahnu\u0165 uhl\u00edkov\u00fa neutralitu do roku 2060.<\/p>\n

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

Agres\u00edvna \u010d\u00ednska enviropolitika v\u00fdsadby stromov pravdepodobne zohr\u00e1va v\u00fdznamn\u00fa \u00falohu pri zmier\u0148ovan\u00ed jej klimatick\u00fdch dopadov. Stane sa napokon l\u00eddrom v dosahovan\u00ed uhl\u00edkovej neutrality?<\/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-6655","post","type-post","status-publish","format-standard","hentry","category-archiv","two-columns"],"_links":{"self":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/posts\/6655","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=6655"}],"version-history":[{"count":0,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/posts\/6655\/revisions"}],"wp:attachment":[{"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/media?parent=6655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/categories?post=6655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/instrid.sk\/en\/wp-json\/wp\/v2\/tags?post=6655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}