Journal
ENVIRONMENTAL MONITORING AND ASSESSMENT
Volume 184, Issue 6, Pages 3613-3628Publisher
SPRINGER
DOI: 10.1007/s10661-011-2211-7
Keywords
Groundwater vulnerability; Aquifer assessment; DRASTIC model; Yinchuan Plain; OREADIC
Categories
Funding
- National Natural Science Foundation of China [40772160]
- China Geological Survey [200310400014]
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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.
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