Vegetation and Agriculture

“Agriculture is extremely vulnerable to climate change. Higher temperatures eventually reduce yields of desirable crops while encouraging weed and pest proliferation. Changes in precipitation patterns increase the likelihood of short-run crop failures and long-run production declines. Although there will be gains in some crops in some regions of the world, the overall impacts of climate change on agriculture are expected to be negative, threatening global food security.” International Food Policy Research Institute

http://www.greenfacts.org/en/climate-change-ar3/l-3/climate-change-5.htm#1p2