Umthelela wokuguquguquka kwesimo sezulu kusomiso ungaphansi kokulindelekile

 

Ichibi eliseSweetwater Creek State Park iLithia Springs GA ngomunye wemithombo abahlali baseGeorgia abathembele kuyo ukuthola amanzi okuphuza

Ngenkathi izifundo zigcwele ukuthi ukufudumala kwembulunga yonke kuzoholela isomiso okunzima kakhulu, okude futhi okuvame kakhulu, manje kukhona nolunye uphenyo olungavumelani nalokho. Lokhu kwenziwa ngokuhlanganyela yi-University of California e-Irvine nase-University of Washington, futhi okushicilelwe kumagazini wesayensi i-Proceedings of the National Academy of Sciences (PNAS).

Ngokusho kwababhali, ukugcwala okuphezulu kwesikhutha kuvumela izitshalo ukugcina amanzi amaningi emhlabathini, ngakho-ke zingakwazi ukuzivumelanisa kangcono namazinga okushisa aphezulu.

Kuze kube manje, kuphela amanani asemkhathini (izinga lokushisa, umswakama, imvula) abhekwe ukuthi ahlole isomiso, njengePalmer Drought Severity Index. Ngale nkomba, kulinganiselwa ukuthi ngaphezu kwama-70% azobhekana nesomiso uma eminyakeni eyikhulu ukukhishwa kwe-CO2 kuphindaphindwa izikhathi ezine zangaphambi kwezimboni. Kodwa-ke, uma imininingwane yokusetshenziswa kwamanzi yizitshalo ifakiwe, leli nani liwela ku- 37%, ngani?

I-Carbon dioxide ibalulekile ezitshalweni. Ngaphandle kwayo, bebengeke bakwazi ukwenza i-photosynthesize futhi bebengakwazi ukukhula. Ukuyimunca, bavula izakhiwo abanazo emaqabungeni abizwa nge-stomata, kepha lokhu kuyinkinga, njengoba kuvumela umswakama ukuba uphume. Yize isimo siguquka uma kuningi kwe-CO2 ekhona emoyeni kusukela lapho I-stomata ayidingi ukuvuleka isikhathi eside kangako, futhi ngenxa yalokho, ukulahleka kwamanzi kuncane.

Isomiso e-Australia

Noma kunjalo, uma isomiso senzeka ngezikhathi ezifudumele, ayabulala. Izitshalo ziba buthakathaka, futhi ngokwenza kanjalo izinambuzane ziyazibulala ngezinsuku ezimbalwa kakhulu. Ngakho-ke, yize zimbalwa kakhulu izomiso, zingaba nemiphumela emibi.

Ungafunda isifundo esigcwele lapha (ngesiNgisi).


Okuqukethwe yi-athikili kunamathela ezimisweni zethu ze izimiso zokuhlelela. Ukubika iphutha chofoza lapha.

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Shiya umbono wakho

Ikheli lakho le ngeke ishicilelwe. Ezidingekayo ibhalwe nge *

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  1. Ubhekele imininingwane: Miguel Ángel Gatón
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.