{"id":79793,"date":"2025-05-28T00:21:33","date_gmt":"2025-05-27T22:21:33","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=79793"},"modified":"2025-05-27T13:20:40","modified_gmt":"2025-05-27T11:20:40","slug":"revoluce-rostliny-absorbuji-o-tretinu-vice-co2-nez-se-drive-myslelo","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2025\/05\/28\/revoluce-rostliny-absorbuji-o-tretinu-vice-co2-nez-se-drive-myslelo\/","title":{"rendered":"Revoluce: Rostliny absorbuj\u00ed o t\u0159etinu v\u00edce CO2, ne\u017e se d\u0159\u00edve myslelo"},"content":{"rendered":"
<\/div>\n

Po cel\u00e1 desetilet\u00ed bylo mno\u017estv\u00ed CO2 absorbovan\u00e9ho rostlinami prost\u0159ednictv\u00edm fotosynt\u00e9zy v\u00fdrazn\u011b podce\u0148ov\u00e1no. Chyba s n\u00e1sledky, kter\u00e9 by se daly napravit d\u00edky nov\u00e9, kreativn\u00ed metod\u011b m\u011b\u0159en\u00ed. To znamen\u00e1, \u017ee nyn\u00ed je nutn\u00e9 upravit i d\u0159\u00edve velmi nespolehliv\u00e9 klimatick\u00e9 modely.<\/span><\/strong><\/p>\n

N\u011bkdy jsou to ty nejjednodu\u0161\u0161\u00ed objevy, kter\u00e9 v\u0161echno zm\u011bn\u00ed. Jako kdy\u017e student jm\u00e9nem Alexander Fleming zapomn\u011bl vy\u010distit Petriho misky a objevil penicilin. Jen\u017ee tentokr\u00e1t pr\u016flom nevznikl v plesniv\u00e9 laborato\u0159i, ale d\u00edky nen\u00e1padn\u00e9mu plynu zvan\u00e9mu karbonylsulfid \u2013 a hrstce vytrval\u00fdch v\u00fdzkumn\u00edk\u016f, kte\u0159\u00ed se odm\u00edtali vzd\u00e1t.<\/span><\/p>\n

\u010cty\u0159i desetilet\u00ed se lid\u00e9 m\u00fdlili. Zcela \u0161patn\u011b. Rostliny na na\u0161\u00ed planet\u011b absorbuj\u00ed z atmosf\u00e9ry o 31 procent v\u00edce oxidu uhli\u010dit\u00e9ho, ne\u017e jsme si mysleli. Tento objev bo\u0159\u00ed sv\u011bton\u00e1zor klimatick\u00e9 hysterie. Proto\u017ee pokud zelen\u00e9 pl\u00edce na\u0161\u00ed planety funguj\u00ed efektivn\u011bji, ne\u017e se d\u0159\u00edve myslelo, co to znamen\u00e1 pro v\u0161echny pochmurn\u00e9 p\u0159edpov\u011bdi klimatick\u00fdch fanatik\u016f, kte\u0159\u00ed reinterpretuj\u00ed CO2 jako smrt\u00edc\u00ed plyn? Kv\u016fli v\u00e1\u0161niv\u00fdm debat\u00e1m mezi klimatick\u00fdmi realisty a klimatick\u00fdmi hysteriky? Pro ka\u017ed\u00e9ho z n\u00e1s?<\/span><\/p>\n

Kdy\u017e \u010d\u00edsla najednou p\u0159estanou pat\u0159it<\/span><\/h3>\n

V\u011bda miluje slo\u017eit\u00e1 pojmenov\u00e1n\u00ed jednoduch\u00fdch v\u011bc\u00ed. To, \u010demu \u0159\u00edkaj\u00ed \u201ehrub\u00e1 pozemsk\u00e1 prim\u00e1rn\u00ed produkce\u201c, v podstat\u011b nen\u00ed nic jin\u00e9ho ne\u017e velk\u00fd z\u00e1van \u010derstv\u00e9ho vzduchu pro na\u0161i planetu. Ka\u017ed\u00fd rok suchozemsk\u00e9 rostliny absorbuj\u00ed ze vzduchu obrovsk\u00e9 mno\u017estv\u00ed CO2 prost\u0159ednictv\u00edm fotosynt\u00e9zy \u2013\u00a0<\/span>podle nejnov\u011bj\u0161\u00edch zji\u0161t\u011bn\u00ed<\/span><\/a>\u00a0to p\u0159edstavuje 157 petagram\u016f uhl\u00edku.<\/span><\/p>\n

157 petagram\u016f? Jeden petagram se rovn\u00e1 jedn\u00e9 miliard\u011b tun. Abychom to pochopili: To je zhruba tolik CO2, kolik ro\u010dn\u011b do ovzdu\u0161\u00ed vypust\u00ed 238 milion\u016f aut. Nebo jinak \u0159e\u010deno \u2013 jako by polovina v\u0161ech aut v Americe jezdila nep\u0159etr\u017eit\u011b cel\u00fd rok.<\/span><\/p>\n

Odborn\u00edci byli 40 let p\u0159esv\u011bd\u010deni, \u017ee se jedn\u00e1 pouze o 120 petagram\u016f. Tato hodnota byla stanovena na za\u010d\u00e1tku 80. let, kdy po\u010d\u00edta\u010de je\u0161t\u011b m\u011bly velikost ledni\u010dky. Od t\u00e9 doby ho t\u00e9m\u011b\u0159 nikdo v\u00e1\u017en\u011b nezpochyb\u0148oval. \u201eJe d\u016fle\u017eit\u00e9, abychom z\u00edskali dobr\u00fd p\u0159ehled o glob\u00e1ln\u00ed hrub\u00e9 prim\u00e1rn\u00ed produkci,\u201c\u00a0<\/span>p\u0159ipou\u0161t\u00ed Lianhong Gu<\/span><\/a>\u00a0, expert na fotosynt\u00e9zu z Oak Ridge National Laboratory a jeden z m\u00e1la, kdo se odv\u00e1\u017eil zpochybnit star\u00e9 jistoty.<\/span><\/p>\n

D\u016fmysln\u00fd trik se p\u00e1chnouc\u00edm plynem<\/span><\/h3>\n

Tady se v\u011bci za\u010dnou opravdu vzru\u0161ovat. V\u011bdci z Cornell University museli b\u00fdt kreativn\u00ed, proto\u017ee m\u011b\u0159en\u00ed CO2 p\u0159\u00edmo je jako snaha vyfotografovat ducha. Hledali tedy komplice: karbonylsulfid, zkr\u00e1cen\u011b OCS \u2013 plyn, kter\u00fd mimochodem von\u00ed jako shnil\u00e1 vejce, pokud byste ho c\u00edtili v koncentrovan\u00e9 form\u011b.<\/span><\/p>\n

Tento molekul\u00e1rn\u00ed detektiv se \u0161\u00ed\u0159\u00ed listy p\u0159esn\u011b stejnou cestou jako CO2, ale sv\u00e1 tajemstv\u00ed odhaluje mnohem snadn\u011bji. Zat\u00edmco se CO2 chyt\u0159e schov\u00e1v\u00e1 p\u0159ed m\u011b\u0159ic\u00edmi p\u0159\u00edstroji, OCS do t\u011bchto past\u00ed prakticky s\u00e1m naraz\u00ed.<\/span><\/p>\n

V\u011bdci vyvinuli sofistikovan\u00fd model, kter\u00fd sleduje OCS na jeho cest\u011b z otev\u0159en\u00e9 atmosf\u00e9ry hluboko do chloroplast\u016f \u2013 t\u011bch mal\u00fdch zelen\u00fdch tov\u00e1ren v rostlinn\u00fdch bu\u0148k\u00e1ch, kde prob\u00edh\u00e1 z\u00e1zrak fotosynt\u00e9zy. Kl\u00ed\u010dov\u00fdm bodem bylo p\u0159esn\u00e9 zn\u00e1zorn\u011bn\u00ed toho, co v\u011bdci naz\u00fdvaj\u00ed \u201edif\u00faze mezofylu\u201c: dr\u00e1hy, kterou mus\u00ed plyny urazit, aby se dostaly z povrchu listu na m\u00edsta, kde jsou skute\u010dn\u011b pot\u0159eba.<\/span><\/p>\n

Tropick\u00e9 lesy: tajn\u00ed superhrdinov\u00e9<\/span><\/h3>\n

A pak p\u0159i\u0161lo velk\u00e9 p\u0159ekvapen\u00ed. V\u011bdci zjistili nejv\u011bt\u0161\u00ed chyby v hodnocen\u00edch pr\u00e1v\u011b tam, kde je to nejobt\u00ed\u017en\u011bj\u0161\u00ed m\u011b\u0159it: v tropick\u00fdch de\u0161tn\u00fdch pralesech. Ukazuje se, \u017ee tito zelen\u00ed giganti maj\u00ed po CO2 je\u0161t\u011b v\u011bt\u0161\u00ed hlad, ne\u017e si mysleli i ti nejodv\u00e1\u017en\u011bj\u0161\u00ed optimist\u00e9.<\/span><\/p>\n

Tohle nejsou jen akademick\u00e9 punti\u010dk\u00e1\u0159stv\u00ed. M\u011b\u0159en\u00ed de\u0161tn\u00fdch prales\u016f nen\u00ed tak snadn\u00e9, jak by se mohlo zd\u00e1t. Satelity, obvykle nejspolehliv\u011bj\u0161\u00ed zdroj glob\u00e1ln\u00edch dat, \u010dasto selh\u00e1vaj\u00ed kv\u016fli hust\u00e9 obla\u010dnosti v tropech. V\u011bdci se proto spol\u00e9hali na data z v\u011b\u017e\u00ed pro monitorov\u00e1n\u00ed \u017eivotn\u00edho prost\u0159ed\u00ed \u2013 tak\u0159\u00edkaj\u00edc pozemn\u00edch jednotek klimatologick\u00e9ho v\u00fdzkumu.<\/span><\/p>\n

\u201eZjistit, kolik CO2 elektr\u00e1rny ro\u010dn\u011b fixuj\u00ed, je h\u00e1dankou, na kter\u00e9 v\u011bdci pracuj\u00ed u\u017e n\u011bjakou dobu,\u201c p\u0159izn\u00e1v\u00e1 Gu. \u201eP\u016fvodn\u00ed odhad 120 petagram\u016f ro\u010dn\u011b byl stanoven v 80. letech a z\u016fstal v platnosti, dokud jsme hledali nov\u00fd p\u0159\u00edstup.\u201c \u010clov\u011bk by si mohl myslet, \u017ee v\u011bda je n\u011bkdy stejn\u011b l\u00edn\u00e1 jako my ostatn\u00ed, pokud jde o vzd\u00e1n\u00ed se drahocenn\u00fdch n\u00e1vyk\u016f.<\/span><\/p>\n

Co to znamen\u00e1 pro n\u00e1s v\u0161echny<\/span><\/h3>\n

Tento objev je darem \u2013 ale tak\u00e9 varov\u00e1n\u00edm. Peter Thornton z N\u00e1rodn\u00ed laborato\u0159e Oak Ridge to stru\u010dn\u011b vyjad\u0159uje: \u201eOprava na\u0161ich odhad\u016f GPP spolehliv\u00fdmi glob\u00e1ln\u00edmi pozorov\u00e1n\u00edmi je kl\u00ed\u010dov\u00fdm krokem ke zlep\u0161en\u00ed na\u0161ich p\u0159edpov\u011bd\u00ed budouc\u00edho atmosf\u00e9rick\u00e9ho CO2.\u201c Zn\u00ed to sucho, ale je to revolu\u010dn\u00ed.<\/span><\/p>\n

P\u0159ehodnocen\u00ed absorpce CO2 rostlinami ukazuje p\u0159edev\u0161\u00edm jednu v\u011bc: p\u0159\u00edroda je pln\u00e1 p\u0159ekvapen\u00ed a my jim zdaleka pln\u011b nerozum\u00edme. Zat\u00edmco politici a m\u00e9dia kv\u016fli obecn\u00e9 globalistick\u00e9 klimatick\u00e9 hysterii \u010dasto uva\u017euj\u00ed extr\u00e9mn\u011b, v\u011bda odhaluje rafinovan\u011bj\u0161\u00ed pravdu. Zelen\u00ed pomocn\u00edci na\u0161\u00ed planety pracuj\u00ed usilovn\u011bji, ne\u017e se o\u010dek\u00e1valo, a to neznamen\u00e1, \u017ee je ochrana p\u0159\u00edrodn\u00edch ekosyst\u00e9m\u016f o nic nal\u00e9hav\u011bj\u0161\u00ed. Naopak: ukazuje to, jak cenn\u00ed ve skute\u010dnosti jsou.<\/span><\/p>\n

\"\"<\/p>\n

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

Po cel\u00e1 desetilet\u00ed bylo mno\u017estv\u00ed CO2 absorbovan\u00e9ho rostlinami prost\u0159ednictv\u00edm fotosynt\u00e9zy v\u00fdrazn\u011b podce\u0148ov\u00e1no. Chyba s n\u00e1sledky,…<\/p>\n","protected":false},"author":2,"featured_media":64595,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[2692,5914,9201],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/79793"}],"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=79793"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/79793\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/64595"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=79793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=79793"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=79793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}