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以泊江海子流域为集水单元,对鄂尔多斯遗鸥湿地1961-2006年的水循环要素特征进行分析,计算遗鸥湿地在自然条件下的水量平衡关系。结果表明:湿地在1999-2006年间蓄水量呈亏缺状态,年均亏缺1.9×106m3。大气降水减少、人类生活用水增加以及大型水利工程截取湿地来水使湿地蓄水量呈亏缺状态,并造成湿地萎缩。
Based on the analysis of water cycle elements of the relic gull wetland from 1961 to 2006 in Bohai Haizi catchment, the water balance of the gull wet land under natural conditions was calculated. The results showed that the water storage in the wetland was in a deficit condition from 1999 to 2006, with an average annual deficit of 1.9 × 106m3. The decrease of atmospheric precipitation, the increase of human domestic water use and the interception of wetlands by large-scale water conservancy projects make the water storage capacity of the wetlands become deficient and cause the shrinkage of wetlands.