【摘要】 位于鄂尔多斯高原盐沼湿地的遗鸥国家级自然保护区近年来水面面积锐减,遗鸥生存受到威胁。通过对保护区内湖泊水量入流及出流的分析,得出桃-阿海子湖水流失的主要原因是降雨量每18年丰水期到枯水期的周期变化,同时蒸发量为降雨量的6倍,损失过大;河流上游13座拦水坝截流地表水和地下水位下降是湖泊缺水的次要因素;旅游开发及人为开采是长期因素,整体影响较小。更多还原

【Abstract】 With the impact of the global warming and the unreasonable utilization of wetland resources by human beings, the area of lakes in Erdos Larus relictus National Nature Reserve decreased sharply, and it has threatened the survival of Larus relictus. In this paper, we analyzed the situation of in-flow and out-flow of the wetland water. We found that the main factors of water shortage in Taolimiao-Alashan lake are the periodic change of rainfall from rainy season to dry season in 18 years and evaporation is six times more than rainfall. The 13 dams in the upper reaches of the river cut off the surface water and underground water level decreases is the secondary factor of water shortage in the lake. Tourism development and artificial exploitation are long-term factors which the influence are small overall.更多还原