植物&动物 | 生态&环境 | 大脑&行为 | 健康 | 技术 | 科学&政策 | 进化 | 古生物学 | 细胞 | 分子 | 基因&蛋白 | 遗传&发育 | 生物化学 | 生物物理 | 免疫 | 人物&事件 | 微生物学 |
当前位置: Science » 生态&环境 » Science:气候变化加剧美国贫富差距


摘要 : 为量化分析到本世纪末气候变化对美国的影响,研究人员利用数学模型对美国经济进行了2.9万次模拟,分析了1981年至2010年间高温、降雨变化、海平面升高和飓风增多等对农业、犯罪、健康、能源需求、劳动力和沿海社区6项关键经济因素的影响。










Here’s how much climate change is going to cost your county


Economists give the problems caused by climate change an appropriately dismal name: the damage function. To project just how much damage each U.S. county will incur by century's end, researchers ran 29,000 simulations of the U.S. economy, with results informed by weather-driven damages they detected in six domains–agriculture, crime, health, energy demand, labor, and coastal communities—between 1981 and 2010. Heat, for example, may increase crime or cause corn yields to fall, but it also could lower fatalities driven by exposure to the cold. The resulting prediction, though quite fallible in its inability to predict how humans will adapt to warming, foresees a country wher, if fossil fuels continue to pour carbon into the atmosphere, the United States will divide further into a country of haves and have nots. Not surprisingly, Atlantic coastal communities are projected to take a toll from rising seas and strengthening hurricanes, but also much of the South and Midwest will be hurt by a decline in farming caused by rising temperatures, along with increasing energy demands to keep up with the heat. Meanwhile, states in the north and northwest could see their fortunes mildly boosted by warming, with farming yields rising thanks to shorter winters and less need to ward off harsh cold in homes. That’s not enough to counteract an overall negative trend for the country, which, if the planet warmed by 6°C from preindustrial levels, could suffer damage worth 6% of its gross domestic product, the team reports today in Science. The results, shown in the above map (red means total economic damage and blue is total economic benefit; projections are for 2080-2100), could guide states and the federal government toward the communities most in need of help adapting to the changed climate—should lawmakers choose to act.

来源: Science 浏览次数:0


RSS订阅 | 生物帮 | 粤ICP备11050685号-3 ©2011-2014 生物帮 Science  All rights reserved.