基于MapInfo的大沽河地下水库脆弱性评价

Vulnerability Assessment of the Dagu River Groundwater Reservoir Based on MapInfo

在大沽河地区自然地理和水文地质调查的基础上 ,充分利用MapInfo建立缓冲区功能来划分评价区域 ,并以MapInfo强大的地图查询运算能力和目前常用的DRASTIC方法进行了全面的脆弱性评价。研究结果表明 :大沽河地下水库大部分地区约 60 .8%属于脆弱性中等区域 ,2 5 .0 %是属于脆弱性较强区域 ,另外还有 10 .1%属于脆弱性较弱区域。总的来讲 ,大沽河水库库区是相对脆弱的 ,今后应尽量避免兴建污染性强的项目 ,减少化肥和农药的大量使用 ,防止地下水污染的发生和发展。

Based on the investigation of geographic and hydrogeologic conditions in the Dagu River area, the studied area is divided into many small zones by using the buffer function of MapInfo. A comprehensive vulnerability assessment is carried out with the popular DRASTIC model and the powerful map inquiry and calculation capacity of MapInfo. The study indicates that 60.8% of the total belongs to moderate vulnerable area, 25.0% highly vulnerable area, and 10.1% weekly vulnerable area. Therefore, all of the Dagu River groundwater reservoir is comparatively vulnerable to groundwater contamination. High pollution projects should be avoided in the future, and fertilizer and pesticide should be used reasonably so as to prevent groundwater contamination.