Sources of Water Vapor to Economically Relevant Regions in Amazonia and the Effect of Deforestation
Sources of Water Vapor to Economically Relevant Regions in Amazonia and the Effect of Deforestation
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DOI：
10.1175/jhm-d-16-0133.1
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发表时间：
2017-06-01
影响因子：
3.8
通讯作者：
Costa, Marcos Heil
中科院分区：
文献类型：
--
作者：
Antonio Sumila, Telmo Cosme;Pires, Gabrielle Ferreira;Costa, Marcos Heil
砍伐森林不仅对保护气候，而且对依赖气候的经济活动，特别是农业生产力和水力发电，都很重要。本研究根据不同的森林砍伐情景，计算了亚马逊河流域经济相关地区降水的水汽来源。这些地区包括马托格罗索州，该州的大豆产量约占全球的9%，以及辛古河和马德拉河流域，正在建设的基础设施将能够产生巴西20%的电力。结果表明，森林砍伐后的降雨量的变化是最接近海洋的地区，并表明大陆水汽源的重要性，亚马逊河流域南部的降水。在两个大陆区域（马德拉和马托格罗索），一个区域水汽来源的减少被其他大陆区域贡献的增加所抵消，而在更靠近海洋的辛古盆地，这种机制没有发生。总之，该区域的地理位置是区域气候对毁林引起的区域气候变化的复原力的一个重要决定因素。地理位置越靠近大陆，森林砍伐后的气候变化就越小。
deforestation is important to preserve not only the climate, but also economic activities that depend on it, in particular, agricultural productivity and hydropower generation. This study calculates the source of water vapor contributing to the precipitation on economically relevant regions in Amazonia according to different scenarios of deforestation. These regions include the state of Mato Grosso, which produces about 9% of the global soybean production, and the basins of the Xingu and Madeira, with infrastructure under construction that will be capable to generate 20% of the electrical energy produced in Brazil. The results show that changes in rainfall after deforestation are stronger in regions nearest to the ocean and indicate the importance of the continental water vapor source to the precipitation over southern Amazonia. In the two more continental regions (Madeira and Mato Grosso), decreases in the source of water vapor in one region were offset by increases in contributions from other continental regions, whereas in the Xingu basin, which is closer to the ocean, this mechanism did not occur. As a conclusion, the geographic location of the region is an important determinant of the resiliency of the regional climate to deforestation-induced regional climate change. The more continental the geographic location, the less climate changes after deforestation.