{"id":74782,"date":"2025-03-24T00:12:56","date_gmt":"2025-03-23T23:12:56","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=74782"},"modified":"2025-03-23T14:45:03","modified_gmt":"2025-03-23T13:45:03","slug":"studie-vice-co2-a-vyssi-teploty-by-byly-dokonce-dobre-pro-zemedelstvi","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2025\/03\/24\/studie-vice-co2-a-vyssi-teploty-by-byly-dokonce-dobre-pro-zemedelstvi\/","title":{"rendered":"Studie: V\u00edce CO2 a vy\u0161\u0161\u00ed teploty by byly dokonce dobr\u00e9 pro zem\u011bd\u011blstv\u00ed"},"content":{"rendered":"
<\/div>\n

V\u00edce oxidu uhli\u010dit\u00e9ho v atmosf\u00e9\u0159e a teplej\u0161\u00ed klima jsou glob\u00e1ln\u00ed hnac\u00ed silou r\u016fstu rostlin. P\u0159\u00edroda se po miliardy let p\u0159izp\u016fsobuje neust\u00e1le se m\u011bn\u00edc\u00edmu klimatu a v tepl\u00fdch obdob\u00edch se flo\u0159e v\u017edy obzvl\u00e1\u0161t\u011b dob\u0159e da\u0159ilo.<\/span><\/strong><\/p>\n

B\u011bhem posledn\u00edch dvou desetilet\u00ed jsme byli konfrontov\u00e1ni s alarmuj\u00edc\u00edmi varov\u00e1n\u00edmi o bl\u00ed\u017e\u00edc\u00ed se klimatick\u00e9 katastrof\u011b v zem\u011bd\u011blstv\u00ed. Obecn\u011b se \u0159\u00edk\u00e1, \u017ee emise oxidu uhli\u010dit\u00e9ho zp\u016fsoben\u00e9 lidskou \u010dinnost\u00ed nadm\u011brn\u011b otepl\u00ed klima a ohroz\u00ed z\u00e1soby potravin, co\u017e m\u016f\u017ee v\u00e9st k hladu a chaosu.<\/span><\/p>\n

Ale nov\u00e1 studie s n\u00e1zvem \u201e\u00a0<\/span>Data z metaanal\u00fdzy roz\u0161\u00ed\u0159en\u00e9ho v\u00fdnosu plodin nepodporuj\u00ed revizi SCC sm\u011brem nahoru<\/span><\/a>\u00a0\u201c, publikovan\u00e1 ve Scientific Reports, obrac\u00ed tento p\u0159\u00edb\u011bh na hlavu a ukazuje, \u017ee zv\u00fd\u0161en\u00ed glob\u00e1ln\u00ed teploty a\u017e o 5 stup\u0148\u016f Celsia nem\u016f\u017ee v\u00fdnosy plodin sn\u00ed\u017eit, ale m\u016f\u017ee je dokonce zv\u00fd\u0161it.<\/span><\/p>\n

Pr\u00e1ce ekonoma Rosse McKitricka odhaluje \u00fast\u0159edn\u00ed pil\u00ed\u0159 revidovan\u00e9ho v\u00fdpo\u010dtu \u201esoci\u00e1ln\u00edch n\u00e1klad\u016f uhl\u00edku\u201c Bidenovy administrativy \u2013 metriky, kterou pou\u017e\u00edv\u00e1 americk\u00e1 Agentura pro ochranu \u017eivotn\u00edho prost\u0159ed\u00ed (EPA) ke kvantifikaci \u00fadajn\u00fdch ekonomick\u00fdch \u0161kod zp\u016fsoben\u00fdch emisemi oxidu uhli\u010dit\u00e9ho. P\u011btin\u00e1sobn\u00fd n\u00e1r\u016fst spole\u010densk\u00fdch n\u00e1klad\u016f na uhl\u00edk \u2013 z 51 USD za tunu na v\u00edce ne\u017e 250 USD \u2013 byl \u010d\u00e1ste\u010dn\u011b zalo\u017een na p\u0159edpokladu, \u017ee oteplov\u00e1n\u00ed zdevastuje zem\u011bd\u011blstv\u00ed.<\/span><\/p>\n

Tyto nov\u00e9 poznatky nejsou jen malou opravou v\u011bdeck\u00e9 zpr\u00e1vy; zpochyb\u0148uj\u00ed nebezpe\u010dn\u00e9 z\u00e1v\u011bry vyvozen\u00e9 z nedbal\u00fdch \u2013 mo\u017en\u00e1 dokonce podvodn\u00fdch \u2013 anal\u00fdz. V\u0161echno, co n\u00e1m bylo \u0159e\u010deno o zm\u011bn\u011b klimatu a zabezpe\u010den\u00ed potravin, m\u016f\u017ee b\u00fdt \u0161patn\u011b.<\/span><\/p>\n

Jak EPA dosp\u011bla k v\u00fdpo\u010dtu spole\u010densk\u00fdch n\u00e1klad\u016f uhl\u00edku, kter\u00fd se rovn\u00e1 masov\u00e9mu hladov\u011bn\u00ed? V roce 2014 byla zve\u0159ejn\u011bna \u0161iroce roz\u0161\u00ed\u0159en\u00e1 metaanal\u00fdza model\u016f plodin, kter\u00e1 tvrdila, \u017ee teplej\u0161\u00ed klima by drasticky sn\u00ed\u017eilo glob\u00e1ln\u00ed v\u00fdnosy plodin. Toto tvrzen\u00ed se prom\u00edtlo do n\u00e1sleduj\u00edc\u00edch model\u016f, kter\u00e9 ovlivnily n\u00e1r\u016fst spole\u010densk\u00fdch n\u00e1klad\u016f na uhl\u00edk ze strany Biden EPA.<\/span><\/p>\n

P\u016fvodn\u00ed datov\u00fd soubor byl v\u0161ak chybn\u00fd \u2013 chyb\u011bly kl\u00ed\u010dov\u00e9 prom\u011bnn\u00e9. Z 1 722 datov\u00fdch soubor\u016f m\u011bla t\u00e9m\u011b\u0159 polovina kritick\u00e9 mezery v datech, jako jsou zm\u011bny v koncentrac\u00edch CO2, tak\u017ee bylo pou\u017eiteln\u00fdch pouze 862 z\u00e1znam\u016f. Tento ne\u00fapln\u00fd obr\u00e1zek vykresloval bez\u00fat\u011b\u0161nou vyhl\u00eddku na klesaj\u00edc\u00ed v\u00fdnosy plodin s pouze m\u00edrn\u00fdm oteplen\u00edm.<\/span><\/p>\n

McKitrick se v\u0161ak nenechal odradit t\u00edm, co se stalo ortodoxi\u00ed v\u011bdy o klimatu. Kopal hloub\u011bji a dok\u00e1zal obnovit 360 dal\u0161\u00edch z\u00e1znam\u016f, \u010d\u00edm\u017e se celkov\u00fd po\u010det zv\u00fd\u0161il na 1 222 \u2013 co\u017e p\u0159edstavuje n\u00e1r\u016fst pou\u017eiteln\u00fdch dat asi o 40 procent. Tyto dodate\u010dn\u00e9 informace uk\u00e1zaly \u201epozitivn\u00ed pr\u016fm\u011brn\u00e9 v\u00fdnosy pro v\u0161echny druhy plodin ve sc\u00e9n\u00e1\u0159\u00edch oteplov\u00e1n\u00ed, dokonce a\u017e o 5 stup\u0148\u016f Celsia\u201c \u2013 co\u017e je n\u00e1r\u016fst teploty, kter\u00fd daleko p\u0159evy\u0161uje p\u0159edpov\u011bdi oteplov\u00e1n\u00ed podle klimatick\u00e9ho panelu OSN. Toto nen\u00ed vyb\u00edr\u00e1n\u00ed t\u0159e\u0161n\u00ed; je v\u00fdsledkem komplexn\u00edho posouzen\u00ed d\u016fkaz\u016f.<\/span><\/p>\n

\u201ePokud se v\u00fdnosy v\u0161ech druh\u016f plodin b\u011bhem p\u0159\u00ed\u0161t\u00edch 100 a\u017e 200 let zv\u00fd\u0161\u00ed, je nepochopiteln\u00e9, \u017ee by model glob\u00e1ln\u00edho obchodu mohl zp\u016fsobit glob\u00e1ln\u00ed ztr\u00e1ty blahobytu,\u201c p\u00ed\u0161e McKitrick ve sv\u00fdch z\u00e1v\u011bre\u010dn\u00fdch pozn\u00e1mk\u00e1ch. Jeho v\u00fdsledky zalo\u017een\u00e9 na komplexn\u011bj\u0161\u00edm souboru dat nazna\u010duj\u00ed, \u017ee apokalyptick\u00fd p\u0159edpoklad byl postaven na p\u00edsku. Nam\u00edsto kolapsu data ukazuj\u00ed, \u017ee v\u00fdnosy plodin z\u016fstanou p\u0159inejmen\u0161\u00edm stabiln\u00ed a mohly by se dokonce zlep\u0161it s v\u00fdrazn\u00fdm oteplen\u00edm.<\/span><\/p>\n

Rostliny nav\u00edc nejsou na oteplov\u00e1n\u00ed sv\u011bta p\u0159\u00edli\u0161 slab\u00e9. Jsou navr\u017eeny tak, aby se jim da\u0159ilo v sou\u010dasn\u00fdch teplot\u00e1ch 20. a 21. stolet\u00ed. V\u011bt\u0161ina rostlin spad\u00e1 do dvou kategori\u00ed: rostliny C3 a C4, pojmenovan\u00e9 podle jejich r\u016fzn\u00fdch fotosyntetick\u00fdch proces\u016f. Rostlin\u00e1m C3, jako je p\u0161enice, r\u00fd\u017ee a s\u00f3ja, se da\u0159\u00ed v podm\u00ednk\u00e1ch zv\u00fd\u0161en\u00e9ho CO2 charakteristick\u00fdch pro 21. stolet\u00ed. Je tak\u00e9 d\u016fle\u017eit\u00e9 p\u0159ipomenout, \u017ee velk\u00e1 \u010d\u00e1st glob\u00e1ln\u00ed pevniny (vzpome\u0148te si na Rusko a Kanadu, dv\u011b nejv\u011bt\u0161\u00ed zem\u011b sv\u011bta) se v sou\u010dasnosti nach\u00e1z\u00ed v oblasti, kter\u00e1 je pro rostliny nehostinn\u00e1.<\/span><\/p>\n

Oxid uhli\u010dit\u00fd je potravou pro rostliny, nezbytn\u00fd pro proces fotosynt\u00e9zy \u2013 proces, p\u0159i kter\u00e9m vznik\u00e1 kysl\u00edk jako vedlej\u0161\u00ed produkt. Vy\u0161\u0161\u00ed hladiny CO2 funguj\u00ed jako kompresor, zvy\u0161uj\u00ed fotosynt\u00e9zu a \u00fa\u010dinnost vyu\u017eit\u00ed vody. Studie ji\u017e dlouho ukazuj\u00ed, \u017ee obohacov\u00e1n\u00ed CO2 ve sklen\u00edc\u00edch m\u016f\u017ee zv\u00fd\u0161it v\u00fdnosy rostlin C3 o 20 a\u017e 40 procent. Rostliny C4, jako je kuku\u0159ice a \u010dirok, m\u00e9n\u011b reaguj\u00ed na CO2, ale da\u0159\u00ed se jim v teplej\u0161\u00edch a su\u0161\u0161\u00edch podm\u00ednk\u00e1ch.<\/span><\/p>\n

Stru\u010dn\u011b \u0159e\u010deno, pokud v\u00fdnosy plodin neklesnou \u2013 pokud z\u016fstanou stabiln\u00ed nebo porostou \u2013, pak zmiz\u00ed d\u016fvod pro \u00fadajn\u011b vysok\u00e9 \u201espole\u010densk\u00e9 n\u00e1klady\u201c uhl\u00edku. McKitrickova studie je v souladu s rozs\u00e1hl\u00fdm historick\u00fdm z\u00e1znamem, kter\u00fd dokumentuje, \u017ee lidstvo vzkv\u00e9talo v d\u0159\u00edv\u011bj\u0161\u00edch teplej\u0161\u00edch dob\u00e1ch ne\u017e dnes.<\/span><\/p>\n

Minojsk\u00e9 tepl\u00e9 obdob\u00ed p\u0159ed 3000 lety, stejn\u011b jako \u0159\u00edmsk\u00e9 a st\u0159edov\u011bk\u00e9 tepl\u00e9 obdob\u00ed jsou toho p\u0159\u00edkladem. Bohu\u017eel, klimatick\u00fd panel OSN, na kter\u00fd se mnoz\u00ed spol\u00e9haj\u00ed jako na m\u011b\u0159\u00edtko pro informace o zm\u011bn\u011b klimatu, m\u00e1 tendenci up\u0159ednost\u0148ovat dodr\u017eov\u00e1n\u00ed kvazin\u00e1bo\u017eensk\u00e9ho klimatick\u00e9ho dogmatu p\u0159ed p\u0159\u00edsn\u00fdm v\u011bdeck\u00fdm v\u00fdzkumem. \u010casto ignoruje p\u0159evratn\u00e1 zji\u0161t\u011bn\u00ed, jako jsou ta McKitrickova.<\/span><\/p>\n

co bude d\u00e1l? P\u0159edev\u0161\u00edm je t\u0159eba p\u0159eorientovat v\u00fdpo\u010det spole\u010densk\u00fdch n\u00e1klad\u016f uhl\u00edku. Realistick\u00e9 hodnocen\u00ed (jak je tak\u00e9 pops\u00e1no v m\u00e9 knize \u201e\u00a0<\/span>CO2 nen\u00ed n\u00e1\u0161 nep\u0159\u00edtel<\/span><\/a>\u00a0\u201c) by uk\u00e1zalo, \u017ee oxid uhli\u010dit\u00fd je sp\u00ed\u0161e p\u0159\u00ednosem ne\u017e zne\u010di\u0161\u0165uj\u00edc\u00ed l\u00e1tkou a \u017ee rostouc\u00ed CO2\u00a0<\/span>p\u0159isp\u00edv\u00e1 ke glob\u00e1ln\u00ed zem\u011bd\u011blsk\u00e9 produktivit\u011b,<\/span><\/a>\u00a0sp\u00ed\u0161e ne\u017e \u017ee je n\u00e1kladem pro spole\u010dnost.<\/span><\/p>\n

EPA pot\u0159ebuje revidovat sv\u00e1 \u010d\u00edsla, odstranit p\u0159ehnan\u00e9 zem\u011bd\u011blsk\u00e9 \u0161kody a zalo\u017eit sv\u00e9 odhady na v\u0161ech dostupn\u00fdch \u00fadaj\u00edch. Je \u010das pod\u00edvat se na fakta, d\u016fv\u011b\u0159ovat skute\u010dn\u00e9 v\u011bd\u011b a ukon\u010dit iracion\u00e1ln\u00ed vl\u00e1dn\u00ed zpr\u00e1vy, kter\u00e9 \u017eiv\u00ed klimatickou hysterii.<\/span><\/p>\n

\"\"<\/p>\n

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

V\u00edce oxidu uhli\u010dit\u00e9ho v atmosf\u00e9\u0159e a teplej\u0161\u00ed klima jsou glob\u00e1ln\u00ed hnac\u00ed silou r\u016fstu rostlin. P\u0159\u00edroda…<\/p>\n","protected":false},"author":2,"featured_media":74783,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[2692,3606,873,839],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/74782"}],"collection":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/comments?post=74782"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/74782\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/74783"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=74782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=74782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=74782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}