{"id":112759,"date":"2026-08-09T04:30:39","date_gmt":"2026-08-09T02:30:39","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=112759"},"modified":"2026-08-09T04:30:39","modified_gmt":"2026-08-09T02:30:39","slug":"nova-studie-potvrzuje-zeme-se-stale-zeleni","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2026\/08\/09\/nova-studie-potvrzuje-zeme-se-stale-zeleni\/","title":{"rendered":"Nov\u00e1 studie potvrzuje: Zem\u011b se st\u00e1le zelen\u00ed"},"content":{"rendered":"
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Zem\u011b se st\u00e1v\u00e1 zelen\u011bj\u0161\u00ed \u2013 a tento trend pokra\u010duje. Ned\u00e1vn\u00e1 anal\u00fdza v \u010dasopise Nature Reviews Earth & Environment nazna\u010duje nov\u00fd rekord v glob\u00e1ln\u00edm ozelen\u011bn\u00ed vegetace v roce 2025, p\u0159i\u010dem\u017e zem\u011bd\u011blsk\u00e1 p\u016fda vykazuje obzvl\u00e1\u0161t\u011b v\u00fdrazn\u00fd n\u00e1r\u016fst. Tato satelitn\u00ed data jen st\u011b\u017e\u00ed odpov\u00eddaj\u00ed obrazu ekologicky hrout\u00edc\u00ed se a ch\u0159adnouc\u00ed planety, kter\u00fd neust\u00e1le \u0161\u00ed\u0159\u00ed klimati\u010dt\u00ed alarmist\u00e9.<\/span><\/strong><\/p>\n

V\u00fdzkumn\u00edci pod veden\u00edm Nazhakaiti Anniwaer a Shilong Piao analyzovali v\u00fdvoj vegetace pomoc\u00ed satelitn\u00edho indexu normalizovan\u00fdch rozd\u00edl\u016f vegetace (NDVI). Sv\u00e1 data publikovali pod n\u00e1zvem \u201e\u00a0<\/span>Zele\u0148 vegetace v roce 2025<\/span><\/a>\u00a0\u201c v \u010dasopise Nature Reviews Earth & Environment. V\u00fdsledek je jasn\u00fd: v roce 2025 dos\u00e1hla pr\u016fm\u011brn\u00e1 glob\u00e1ln\u00ed m\u00edra ozelen\u011bn\u00ed vegetace nejvy\u0161\u0161\u00ed hodnoty v cel\u00e9 studovan\u00e9 \u010dasov\u00e9 \u0159ad\u011b. Celkem 68,2 procenta zarostl\u00fdch ploch vykazovalo zn\u00e1mky ozelen\u011bn\u00ed, zat\u00edmco dlouhodob\u00fd glob\u00e1ln\u00ed trend ozelen\u011bn\u00ed se z\u00e1rove\u0148 zv\u00fd\u0161il z 8,1 \u00d7 10\u207b\u2074 za rok v obdob\u00ed 2000 a\u017e 2024 na 8,5 \u00d7 10\u207b\u2074 v roce 2025. Trend se tedy v tomto rekordn\u00edm roce neoslabil, ale sp\u00ed\u0161e se v pr\u016fm\u011bru na cel\u00e9m sv\u011bt\u011b zrychlil.<\/span><\/p>\n

Je ironi\u00ed, \u017ee orn\u00e1 p\u016fda se st\u00e1v\u00e1 obzvl\u00e1\u0161t\u011b zelenou.<\/span><\/h3>\n

Tento trend je obzvl\u00e1\u0161t\u011b patrn\u00fd tam, kde je p\u0159\u00edmo ovlivn\u011bna produkce potravin pro lidi. V roce 2025 vykazovalo 77,6 procenta zkouman\u00e9 orn\u00e9 p\u016fdy sign\u00e1l ozelen\u011bn\u00ed, ve srovn\u00e1n\u00ed se 72,1 procenty travn\u00edch porost\u016f. V\u00fdzkumn\u00edci identifikovali hlavn\u00ed oblasti se zv\u00fd\u0161en\u00fdm ozelen\u011bn\u00edm v ji\u017en\u00ed Africe, ji\u017en\u00ed Ji\u017en\u00ed Americe, severn\u00ed Austr\u00e1lii, Evrop\u011b, st\u0159edn\u00ed Severn\u00ed Americe a severn\u00ed \u010c\u00edn\u011b; mnoho z t\u011bchto region\u00e1ln\u00edch n\u00e1r\u016fst\u016f se shodovalo s vy\u0161\u0161\u00edmi sr\u00e1\u017ekami. I v les\u00edch ozelen\u011bn\u00ed nad\u00e1le p\u0159evl\u00e1dalo a pokr\u00fdvalo 60 procent zkouman\u00e9 oblasti. V\u00fdchodn\u00ed Sibi\u0159 p\u0159edstavovala v\u00fdrazn\u00fd kontrast, kde neobvykle n\u00edzk\u00e9 teploty b\u011bhem vegeta\u010dn\u00edho obdob\u00ed vedly ke zv\u00fd\u0161en\u00e9mu hn\u011bdnut\u00ed.<\/span><\/p>\n

Toto st\u00e1le v\u00edce podkop\u00e1v\u00e1 jeden z nejpopul\u00e1rn\u011bj\u0161\u00edch obraz\u016f klimatick\u00e9 propagandy: p\u0159edstavu Zem\u011b, jej\u00ed\u017e vegetace na rozs\u00e1hl\u00fdch ploch\u00e1ch ch\u0159adne v d\u016fsledku rostouc\u00edch teplot. Skute\u010dn\u00e1 biosf\u00e9ra reaguje podstatn\u011b slo\u017eit\u011bj\u0161\u00edm zp\u016fsobem. Roli hraje teplota a sr\u00e1\u017eky, stejn\u011b jako zales\u0148ov\u00e1n\u00ed, zem\u011bd\u011blstv\u00ed a zm\u011bny ve vyu\u017e\u00edv\u00e1n\u00ed p\u016fdy \u2013 a tak\u00e9 rostouc\u00ed obsah CO2 v atmosf\u00e9\u0159e. Studie tak potvrzuje glob\u00e1ln\u00ed n\u00e1r\u016fst indexu listov\u00e9 plochy pozorovan\u00fd v posledn\u00edch \u010dty\u0159ech desetilet\u00edch a vypo\u010d\u00edt\u00e1v\u00e1, \u017ee zm\u011bny samotn\u00e9ho vegeta\u010dn\u00edho krytu odpov\u00eddaj\u00ed za 18,1 \u00b1 5,9 procenta tohoto n\u00e1r\u016fstu. Snahy o zales\u0148ov\u00e1n\u00ed v \u010c\u00edn\u011b a Evrop\u011b zanechaly jasn\u00e9 stopy i v satelitn\u00edch datech.<\/span><\/p>\n

CO2 hnoj\u00ed vegetaci<\/span><\/h3>\n

To, \u017ee oxid uhli\u010dit\u00fd podporuje r\u016fst rostlin, by nem\u011blo b\u00fdt revolu\u010dn\u00edm zji\u0161t\u011bn\u00edm: CO2 je jedn\u00edm z v\u00fdchoz\u00edch materi\u00e1l\u016f pro fotosynt\u00e9zu. Rozs\u00e1hl\u00e1 mezin\u00e1rodn\u00ed studie, kterou NASA podrobn\u011b prezentovala v roce 2016 (\u00a0<\/span>Report24 o n\u00ed informoval mimo jin\u00e9 zde<\/span><\/a>\u00a0), dosp\u011bla na z\u00e1klad\u011b satelitn\u00edch dat a vegeta\u010dn\u00edch model\u016f k z\u00e1v\u011bru, \u017ee hnojen\u00ed CO2 by mohlo vysv\u011btlit p\u0159ibli\u017en\u011b 70 procent tehdy pozorovan\u00e9ho glob\u00e1ln\u00edho efektu ozelen\u011bn\u00ed. Vstupy dus\u00edku byly kvantifikov\u00e1ny na dev\u011bt procent, klimatick\u00e9 zm\u011bny na osm procent a zm\u011bny v krajinn\u00e9m krytu na \u010dty\u0159i procenta. Auto\u0159i pouk\u00e1zali na to, \u017ee p\u0159esn\u00e9 p\u0159i\u0159azen\u00ed p\u0159\u00ed\u010din bylo zalo\u017eeno na modelov\u00fdch v\u00fdpo\u010dtech \u2013 samotn\u00e9 pozorovan\u00e9 ozelen\u011bn\u00ed v\u0161ak poch\u00e1z\u00ed ze satelitn\u00edch dat.<\/span><\/p>\n

A tento efekt se v \u017e\u00e1dn\u00e9m p\u0159\u00edpad\u011b neomezuje pouze na tr\u00e1vu a obil\u00ed. Studie publikovan\u00e1 v roce 2025 v \u010dasopise Nature Plants s n\u00e1zvem \u201e\u00a0<\/span>Rostouc\u00ed velikost strom\u016f v Amazonii<\/span><\/a>\u00a0\u201c analyzovala t\u0159i desetilet\u00ed dat ze 188 pozemk\u016f vzrostl\u00fdch les\u016f v Amazonii. Pr\u016fm\u011brn\u00e1 plocha z\u00e1kladny kmene strom\u016f se tam zvy\u0161ovala o 3,3 procenta za desetilet\u00ed a maxim\u00e1ln\u00ed velikost stromu o 5,8 procenta. Po\u010det velk\u00fdch kmen\u016f strom\u016f se dokonce zv\u00fd\u0161il o 6,6 procenta za desetilet\u00ed; u nejv\u011bt\u0161\u00edch strom\u016f se celkov\u00e1 plocha z\u00e1kladny zv\u00fd\u0161ila o 8,4 procenta. V\u011bdci identifikovali rostouc\u00ed hladiny CO2 v atmosf\u00e9\u0159e jako pravd\u011bpodobn\u011b nejd\u016fle\u017eit\u011bj\u0161\u00ed, i kdy\u017e mo\u017en\u00e1 ne jedin\u00fd, faktor tohoto v\u00fdvoje. Dokonce i \u00fa\u010dinky horka, sucha a dal\u0161\u00edch stres\u016f byly dosud v\u00edce ne\u017e kompenzov\u00e1ny pozitivn\u00edmi \u00fa\u010dinky t\u011bchto dodate\u010dn\u00fdch zdroj\u016f v pozorovan\u00e9 struktu\u0159e lesa.<\/span><\/p>\n

Nep\u0159\u00edjemn\u00fd obraz pro klimatick\u00e9 fanatiky<\/span><\/h3>\n

Ale v tom spo\u010d\u00edv\u00e1 politick\u00fd probl\u00e9m. Ve\u0159ejn\u00e1 debata o glob\u00e1ln\u00edm klimatu se po l\u00e9ta \u017eivila obrazy ho\u0159\u00edc\u00edch les\u016f, vyprahl\u00fdch pol\u00ed a krajiny, kter\u00e1 se \u00fadajn\u011b st\u00e1v\u00e1 st\u00e1le nehostinn\u011bj\u0161\u00ed pro \u017eivot. Rekordn\u00ed \u00farovn\u011b r\u016fstu glob\u00e1ln\u00ed vegetace, siln\u011bj\u0161\u00ed r\u016fst rostlin a rozr\u016fstaj\u00edc\u00ed se stromy v amazonsk\u00e9m de\u0161tn\u00e9m pralese do tohoto vypr\u00e1v\u011bn\u00ed zapadaj\u00ed mnohem m\u00e9n\u011b p\u0159esn\u011b. Samoz\u0159ejm\u011b, \u017ee ka\u017ed\u00fd hork\u00fd den mohou m\u00e9dia zveli\u010dovat jako varovn\u00fd sign\u00e1l dal\u0161\u00ed klimatick\u00e9 katastrofy; nicm\u00e9n\u011b ozelen\u011bn\u00ed planety pomoc\u00ed satelit\u016f, trvaj\u00edc\u00ed desetilet\u00ed, se d\u00e1 jen st\u011b\u017e\u00ed prodat dramatick\u00fdmi televizn\u00edmi z\u00e1b\u011bry.<\/span><\/p>\n

To je mnohem v\u00edc ne\u017e jen hezk\u00fd odst\u00edn zelen\u00e9 na satelitn\u00edch map\u00e1ch. V\u011bt\u0161\u00ed listov\u00e1 plocha znamen\u00e1 v\u011bt\u0161\u00ed fotosynt\u00e9zu, v\u00edce biomasy a siln\u011bj\u0161\u00ed uhl\u00edkov\u00fd cyklus na zemi. \u010cl\u00e1nek Nature Communications z roku 2025 s n\u00e1zvem \u201e\u00a0<\/span>Zm\u011bna vegeta\u010dn\u00edho pokryvu jako rostouc\u00ed hnac\u00ed s\u00edla dynamiky glob\u00e1ln\u00edho indexu listov\u00e9 plochy<\/span><\/a>\u00a0\u201c tak\u00e9 poukazuje na vy\u0161\u0161\u00ed produktivitu vegetace, v\u011bt\u0161\u00ed absorpci uhl\u00edku a dal\u0161\u00ed odpa\u0159ovac\u00ed ochlazov\u00e1n\u00ed jako d\u016fsledek glob\u00e1ln\u011b rostouc\u00edho indexu listov\u00e9 plochy. Z\u00e1rove\u0148 se od 60. let 20. stolet\u00ed masivn\u011b zv\u00fd\u0161ila glob\u00e1ln\u00ed zem\u011bd\u011blsk\u00e1 produkce.\u00a0<\/span>Podle \u00fadaj\u016f americk\u00e9ho ministerstva zem\u011bd\u011blstv\u00ed se<\/span><\/a>\u00a0skute\u010dn\u00e1 hodnota glob\u00e1ln\u00ed produkce plodin, hospod\u00e1\u0159sk\u00fdch zv\u00ed\u0159at a akvakultury mezi lety 1961 a 2020 t\u00e9m\u011b\u0159 \u010dty\u0159n\u00e1sobn\u011b zv\u00fd\u0161ila \u2013 z 1,1 bilionu dolar\u016f na 4,3 bilionu dolar\u016f, po\u010d\u00edt\u00e1no ve st\u00e1l\u00fdch cen\u00e1ch roku 2015. P\u0159edstava planety, jej\u00ed\u017e schopnost produkovat potraviny se nevyhnuteln\u011b hrout\u00ed p\u0159\u00edmo p\u0159ed na\u0161ima o\u010dima, rozhodn\u011b nen\u00ed podlo\u017eena skute\u010dn\u00fdm v\u00fdvojem.<\/span><\/p>\n

Region\u00e1ln\u00ed sucha, lesn\u00ed po\u017e\u00e1ry a ne\u00farody zp\u016fsoben\u00e9 nep\u0159\u00edzniv\u00fdm po\u010das\u00edm se samoz\u0159ejm\u011b st\u00e1le vyskytuj\u00ed, ale obecn\u00e9 trendy v glob\u00e1ln\u00edm m\u011b\u0159\u00edtku z\u016fst\u00e1vaj\u00ed nezm\u011bn\u011bny. CO2 podporuje r\u016fst a vy\u0161\u0161\u00ed teploty mohou v n\u011bkter\u00fdch oblastech (obvykle charakterizovan\u00fdch del\u0161\u00edmi chladn\u00fdmi obdob\u00edmi) prodlou\u017eit vegeta\u010dn\u00ed obdob\u00ed, \u010d\u00edm\u017e stimuluj\u00ed fotosynt\u00e9zu. Zem\u011b je dnes podstatn\u011b zelen\u011bj\u0161\u00ed ne\u017e p\u0159ed n\u011bkolika desetilet\u00edmi a rok 2025 p\u0159inesl dal\u0161\u00ed rekord. Od \u201eklimatick\u00e9ho kolapsu\u201c a \u201eum\u00edraj\u00edc\u00ed planety\u201c m\u00e1me tedy st\u00e1le daleko.<\/span><\/p>\n

Heinz Steiner ve sv\u00e9 nov\u00e9 knize \u201e M\u00e1nie v\u011btrn\u00e9 energie<\/span><\/a>\u00a0\u201c ukazuje\u00a0, jak drah\u00e1 je pro n\u00e1s ideologie v\u011btrn\u00e9 energie z ekologick\u00e9ho, ekonomick\u00e9ho i energetick\u00e9ho hlediska.<\/span><\/em><\/p>\n

\"\"<\/p>\n

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

Zem\u011b se st\u00e1v\u00e1 zelen\u011bj\u0161\u00ed \u2013 a tento trend pokra\u010duje. Ned\u00e1vn\u00e1 anal\u00fdza v \u010dasopise Nature Reviews…<\/p>\n","protected":false},"author":2,"featured_media":112760,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[2692,65,839,9201],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/112759"}],"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=112759"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/112759\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/112760"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=112759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=112759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=112759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}