Assessment of groundwater vulnerability in the Yinchuan Plain, Northwest China using OREADIC

Assessment of groundwater vulnerability in the Yinchuan Plain, Northwest China using OREADIC
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利用OREADIC评估中国西北银川平原地下水脆弱性

DOI:
10.1007/s10661-011-2211-7
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发表时间:
2012-06
影响因子:
3
通讯作者:
Zhang, Xuedi
Zhang, Xuedi
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Li, Peiyue;Howard, Ken W. F.;Yang, Chao;Zhang, Xuedi

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地下水脆弱性评估提供了衡量地下水质量对外加污染物负荷的敏感性的尺度,全球公认这是所有含水层管理和保护计划的一个基本要素。在本文中,地下水的脆弱性,中国西北银川平原的确定使用OREADIC,一个基于GIS的评估工具,结合了普遍流行的DRASTIC方法脆弱性评估的主要特点,但已被修改,以考虑重要的额外的水文地质因素,是特定于该地区。结果表明,高脆弱性地区主要分布在青铜峡市、吴忠市、灵武市和永宁县附近,与含水层补给率高、地下水位埋深浅、含水层物质渗透性强有关。在高脆弱性地区NO3-升高的存在支持OREADIC方法。在这项研究中开发的脆弱性地图已成为该地区环境规划的宝贵工具,并将用于地下水资源的预测管理。
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 NO3−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.
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