School of Environmental Science and Engineering, Chang'an University, 126 Yanta Road, Xi'an, Shaanxi 710054, China.
Environ Monit Assess. 2012 Jun;184(6):3613-28. doi: 10.1007/s10661-011-2211-7. Epub 2011 Jul 20.
Groundwater vulnerability assessments provide a measure of the sensitivity of groundwater quality to an imposed contaminant load and are globally recognized as an essential element of all aquifer management and protection plans. In this paper, the vulnerability of groundwaters underlying the Yinchuan Plain of Northwest China is determined using OREADIC, a GIS-based assessment tool that incorporates the key characteristics of the universally popular DRASTIC approach to vulnerability assessment but has been modified to consider important additional hydrogeological factors that are specific to the region. The results show that areas of high vulnerability are distributed mainly around Qingtongxia City, Wuzhong City, Lingwu City, and Yongning County and are associated with high rates of aquifer recharge, shallow depths to the water table, and highly permeable aquifer materials. The presence of elevated NO (3) (-) in the high vulnerability areas endorses the OREADIC approach. The vulnerability maps developed in this study have become valuable tools for environmental planning in the region and will be used for predictive management of the groundwater resource.
地下水脆弱性评估提供了衡量地下水质量对施加的污染物负荷的敏感性的指标，被全球公认为所有含水层管理和保护计划的重要组成部分。在本文中，使用基于 GIS 的评估工具 OREADIC 确定了中国西北地区银川平原地下水的脆弱性，该工具结合了普遍流行的 DRASTIC 脆弱性评估方法的关键特征，但已进行了修改，以考虑到针对该地区的重要补充水文地质因素。结果表明，高脆弱性地区主要分布在青铜峡市、吴忠市、灵武市和永宁县周围，与含水层补给率高、地下水位浅和渗透性强的含水层物质有关。高脆弱性地区中升高的硝酸盐（3）（-）支持 OREADIC 方法。本研究中开发的脆弱性图已成为该地区环境规划的有价值工具，并将用于地下水资源的预测管理。
