Vegetation modifies land-surface properties, mediating the exchange of energy, moisture, trace gases, and aerosols between the land and the atmosphere. These exchanges influence the atmosphere on local, regional, and global scales. Through altering surface properties, vegetation change can impact on weather and climate. We review current understanding of the processes through which tropical land-cover change (LCC) affects rainfall. Tropical deforestation leads to reduced evapotranspiration, increasing surface temperatures by 1–3 K and causing boundary layer circulations, which in turn increase rainfall over some regions and reduce it elsewhere. On larger scales, deforestation leads to reductions in moisture recycling, reducing regional rainfall by up to 40%. Impacts of future tropical LCC on rainfall are uncertain but could be of similar magnitude to those caused by climate change. Climate and sustainable development policies need to account for the impacts of tropical LCC on local and regional rainfall.

中文翻译：

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热带植被对降雨的影响

植被改变了地表特性，调节了陆地和大气之间的能量、水分、微量气体和气溶胶的交换。这些交流影响了地方、区域和全球范围的气氛。通过改变地表特性，植被变化可以影响天气和气候。我们回顾了当前对热带土地覆盖变化 (LCC) 影响降雨过程的理解。热带森林砍伐导致蒸发蒸腾减少，使地表温度升高 1-3 K 并引起边界层环流，这反过来又会增加某些地区的降雨量并减少其他地区的降雨量。在更大的范围内，森林砍伐导致水分循环减少，使区域降雨量减少多达 40%。未来热带 LCC 对降雨的影响尚不确定，但可能与气候变化造成的影响相似。气候和可持续发展政策需要考虑热带 LCC 对当地和区域降雨的影响。