Does more CO2 mean increased crop water productivity?

Posted by K R on

Most of us are by now aware of the harmful effect greenhouse gas emissions exert through rising global temperatures. As temperatures go up, glaciers melt and ocean levels rise. Climate change also exacerbates water scarcity worldwide. Water scarcity significantly impacts agricultural productivity and food scarcity. These impacts will be felt the most in arid regions, where agriculture depends on irrigation, which represents humanity's largest diversion of fresh water. For the most part, we think of rising levels of carbon dioxide as an environmental problem. But atmospheric CO2 can also boost agricultural productivity by helping plants grow. How do these potential issues balance out? In an investigation recently published in Nature Climate Change, scientists have looked into the global implications of carbon dioxide's ability to enhance agricultural productivity. Read More: Ars Technica

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