| 岩溶地下水脆弱性评价的城镇化因子:以水城盆地为例 |
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| 引用本文： | 汪莹,罗朝晖,吴亚,李洁,顾栩.岩溶地下水脆弱性评价的城镇化因子:以水城盆地为例[J].地球科学,2019,44(9):2909-2919. |
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| 作者姓名： | 汪莹 罗朝晖 吴亚 李洁 顾栩 |
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| 作者单位： | 中国地质大学环境学院, 湖北武汉 430074 |
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| 基金项目： | 贵州省公益性基础性地质工作项目黔国土资地环函[2014]23号 |
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| 摘 要： | 岩溶地下水是贵州省六盘水市的重要供水水源，但针对该地区的岩溶地下水脆弱性评价，尤其是城镇化区域的岩溶地下水脆弱性评价尚未见报道.运用改进的径流-覆盖层-降雨（COP）模型，利用RS及GIS技术对水城盆地的土壤类型、土地利用/覆盖类型、降水量数据进行处理，研究了岩溶地下水脆弱性评价的城镇化因子.结果显示，2004~2016年间，研究区地下水固有脆弱性整体呈现出由中脆弱性向低脆弱性转变的趋势，脆弱性降低的区域与城镇化过程中增加的不透水地面区域相一致；表明不透水地面有效地阻碍了地表污染物进入地下，降低了地下水固有脆弱性.本结果为水城盆地岩溶水资源管理提供了重要依据.
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| 关 键 词： | 城镇化 固有脆弱性评价 COP模型 岩溶区 水文地质 |
| 收稿时间： | 2019-06-05 |
Urbanization Factors of Groundwater Vulnerability Assessment in Karst Area: A Case Study of Shuicheng Basin |
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| Abstract: | Karst groundwater is an important water supply source for Liupanshui City of Guizhou Province. However, vulnerability assessment of karst groundwater in this region, especially in the urbanized areas has not been reported. To characterize urbanization factors of groundwater vulnerability assessment in karst area, we chose Shuicheng Basin as the study area, used and improved the Concentration of Flow-Overlying Layers-Precipitation (COP) model, and processed data of soil types, land use/land cover, and precipitation by RS and GIS technologies. Results show that the inherent vulnerability of groundwater for the study area decreased from medium to low during 2004 to 2016, and the area with decreased vulnerability is consistent with the increased impervious area caused by urbanization. It suggests that impervious grounds hinder inputs of surface pollutants, reducing inherent vulnerability of groundwater. Our results are important for karst water resource management in the study area. |
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