新疆伊吾县托勒库勒湖生态地质脆弱性评价  

Ecological geological vulnerability evaluation of Lake Tolakule in Yiwu County,Xinjiang

作　　者：王涛 徐明 Wang Tao;Xu Ming(Xinjiang Geological Engineering Survey Institute Co.,Ltd.,Urumqi,Xinjiang 830000;Geological Environment Monitoring Institution of Xinjiang,Urumqi,Xinjiang 830000)

机构地区：[1]新疆地质工程勘察院有限公司,新疆乌鲁木齐830000 [2]新疆维吾尔自治区地质环境监测院,新疆乌鲁木齐830000

出　　处：《资源环境与工程》2024年第6期728-735,共8页Resources Environment & Engineering

基　　金：新疆维吾尔自治区地质勘查基金项目(2010005)。

摘　　要：新疆伊吾县托勒库勒湖近年来已呈现出生态功能退化的趋势,急需开展生态地质脆弱性评价。基于层次分析法,选择地下水埋深、地下水质量、包气带岩性、土壤含水率、盐渍化程度、大气降水量、湿度、归一化植被指数、地貌类型等9项评价指标,对托勒库勒湖生态地质脆弱性进行评价,提出湖泊生态环境保护的合理化建议。结果表明,脆弱性高区和较高区主要分布在托勒库勒湖周边的环状区域,占研究区总面积的34.96%,区内土壤盐渍化程度较重、地下水质量较差、植被覆盖度较低;脆弱性中等区主要分布在山前洪积砾质平原和托勒库勒湖周边的沼泽湿地区,占研究区总面积的52.60%,各要素较为均衡;脆弱性较低区和低区主要分布在西侧的山前洪积平原和托勒库勒湖东南部的条带状区域,占研究区总面积的12.44%,区内植被覆盖度较高、土壤含水率较高、湿度较大。建议逐步开展恢复托勒库勒湖西侧水域的相关工作,改善地貌和微循环条件,为托勒库勒湖后期旅游开发和经济建设提供良好的生态环境。Lake Tolakule in Yiwu County,Xinjiang has shown a trend of ecological function degradation in recent years,and it is urgent to carry out ecological geological vulnerability evaluation.Based on the analytic hierarchy process,nine evaluation indexes including groundwater depth,groundwater quality,lithology of aerated zone,soil moisture content,salinization degree,atmospheric precipitation,humidity,normalized difference vegetation index and landform type were selected to evaluate the ecological geological vulnerability of Lake Tolakule,and put forward reasonable measures for lake ecological environment protection.The results show that the areas with higher vulnerability and high vulnerability are mainly distributed in the ring area around the Lake Tolakule,accounting for 34.96%of the total area of the study area.The main factors are heavy soil salinization,poor groundwater quality and low vegetation coverage.The medium vulnerability area is mainly distributed in the piedmont flood gravel plain and the swamp wet area around the Lake Tolakule,accounting for 52.60%of the total area of the study area,and all elements are relatively balanced.The areas of low vulnerability and lower vulnerability are mainly distributed in the west of the piedmont flood plain and the strip area in the southeast of the Lake Tolakule,accounting for 12.44%of the total area of the study area.The main factors are high vegetation coverage,high water content and high humidity.It is suggested to gradually carry out relevant work to restore the waters on the west side of Lake Tolakule,improve the landform and microcirculation conditions,and provide a good ecological environment for the later tourism development and economic construction of Lake Tolakule.

关 键 词：生态地质脆弱性 层次分析法 综合评价指数 托勒库勒湖 

分 类 号：X826[环境科学与工程—环境工程]