The 'water-saving' effect of vegetation under rising CO₂ may be overestimated

PHYSorg
Jun 26, 2026, 3:56 am251 ptsTop
Climate warming is intensifying terrestrial water scarcity and drought risks worldwide. Meanwhile, rising atmospheric CO2 reduces plant stomatal conductance—the openness of leaf pores that governs both CO2 intake and water loss—and improves water-use efficiency, which has been widely considered capable of…

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