博期腾湖流域风险评价

采用遥感技术确立生态风险受体,通过生态风险的综合计算和GIS分析叠加,得到博斯腾湖区域综合生态风险评价。研究表明:局部地区为高矿化度及富营养化危害;随着水域面积的缩小和水环境恶化,芦苇长势不断衰退。开都河入大湖河口区和西泵站区为洪涝灾害高发区;西南小湖区面积不断萎缩,矿化度严重;大湖平均水质为III级。在以博斯腾湖湖水水质改善、湖区生态系统多样性恢复和湖泊湿地生态系统健康、完整性保持为前提,实施水源地工程、灌区改造工程、芦苇湿地恢复工程和东泵站等工程,是区域可持续发展的道路,才能实现生态环境与社会经济最大效益。

Regional Ecological Risk Assessment by Remote Sensing in Bosten Lake

This research tries to make a systematical appraisal on regional risk toward the area around the Bosten lake with the method of ecological environmental evaluation and the Remote Sensing and GIS.Its purpose lies in offering the theory and technical support for regional risk management,which will play an important realistic role in improving the ecological environment of Bosten lake.Studies shows that,suffering from high mineralization and eutrophication,the reed growth declines constantly with the water area dwindling and water environment worsening.The floods frequently accure in the region around Large Lake river mouth,the area of Southwest Small Lake,with serious mineralization,is withering constantly.The average water quality of Large Lake is the III grade.