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A new study on plant water retention from the University of California, Irvine and the University of Washington might rescind some of our assumptions of climate change impacts on agriculture, water resources, wildfire risk, and plant growth. Their findings reveal that water conserved by plants under high CO2 conditions compensates for much of the effect of warmer temperatures, which means more water is retained on land than predicted in commonly used drought assessments. ScienceDaily reports:
The study compares current drought indices with ones that take into account changes in plant water use. Reduced precipitation will increase droughts across southern North America, southern Europe and northeastern South America. But the results show that in Central Africa and temperate Asia — including China, the Middle East, East Asia and most of Russia — water conservation by plants will largely counteract the parching due to climate change.
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