基于GIS对柴达木盆地地下水防污性能的分析  

Application of groundwater antipollution capacity based on GIS in Qaidam basin

作　　者：冉婧媛 李成英 金家琼 蒋南杰 权开兄 

机构地区：[1]青海省水文地质及地热地质重点实验室,青海省水文地质工程地质环境地质调查院,青海西宁810008

出　　处：《青海大学学报（自然科学版）》2017年第6期76-82,共7页Journal of Qinghai University(Natural Science)

基　　金：中国地质调查局项目(12120114029701)

摘　　要：为了查明柴达木盆地地下水的防污性能,通过地下水水位实测及包气带岩性调查等工作,选取地下水位埋深、含水层介质、入渗补给强度、含水层富水性和包气带介质5个因子,利用DRASTIC模型和mapgis软件的区叠加功能,对整个盆地的地下水防污性能进行分区。结果表明:地下水防污性能好的区为丘陵区和山区,中等的区为高海拔平原、台地,较差及差的区位于湖积平原及德令哈、大柴旦和乌兰地区。总体上,人类活动较密集的湖盆平原地下水防污性能较弱,人类活动较少的山区地下水防污性能较好,这一结论可为区域发展提供参考。In order to find out the antipollution performance of groundwater in Qaidam basin, by ana-lyzing field survey data of ground water level and lithology investigation of unsaturated zone, the depth of groundwater, aquifer media, infiltration recharge intensity, water richness of aqueous layer and the media of unsaturated zone were selected on the basis of the geological and hydrogeological conditions. The superposition function of DRASTIC model and mapgis software were used for groundwater antipollution capacity partition of the area. The results indicated that good antipollution performance area is at hilly area and moderate area is at high elevation plain and tableland, while bad area is at placustrine, such as Delingha, Da Qaidam and Ulan. Above a l l, bad area is at placustrine with much anthropogenil activities, on the contrary, good antipollution performance area is at mountain area with less anthropogenic activities. This result can provide reference for regional de-velopment.

关 键 词：柴达木盆地 地下水 防污性能 评价因子 DRASTIC模型 

分 类 号：X820.6[环境科学与工程—环境工程]