Department of Watershed Management Engineering, College of Agriculture, Lorestan University, Lorestan, Iran.
Department of Earth and Environment, AHC-5-390, Florida International University, USA.
Sci Total Environ. 2016 Oct 15;568:1110-1123. doi: 10.1016/j.scitotenv.2016.06.176. Epub 2016 Jun 26.
Effective management and sustainable development of groundwater resources of arid and semi-arid environments require monitoring of groundwater quality and quantity. The aim of this paper is to develop a reasonable methodological framework for producing the suitability map for drinking water through the geographic information system, remote sensing and field surveys of the Andimeshk-Dezful, Khozestan province, Iran as a semi-arid region. This study investigated the delineation of groundwater potential zone based on Dempster-Shafer (DS) theory of evidence and evaluate its applicability for groundwater potentiality mapping. The study also analyzed the spatial distribution of groundwater nitrate concentration; and produced the suitability map for drinking water. The study has been carried out with the following steps: i) creation of maps of groundwater conditioning factors; ii) assessment of groundwater occurrence characteristics; iii) creation of groundwater potentiality map (GPM) and model validation; iv) collection and chemical analysis of water samples; v) assessment of groundwater nitrate pollution; and vi) creation of groundwater potentiality and quality map. The performance of the DS was also evaluated using the receiver operating characteristic (ROC) curve method and pumping test data to ensure its generalization ability, which eventually, the GPM showed 87.76% accuracy. The detailed analysis of groundwater potentiality and quality revealed that the 'non acceptable' areas covers an area of about 1479km(2) (60%). The study will provide significant information for groundwater management and exploitation in areas where groundwater is a major source of water and its exploration is critical to support drinking water need.
干旱和半干旱环境下地下水资源的有效管理和可持续发展需要监测地下水的质量和数量。本文的目的是开发一个合理的方法框架，通过地理信息系统、遥感和实地调查，为伊朗霍拉桑省安提梅什克-代兹富勒地区这一半干旱地区制作适合饮用的地下水适宜性图。本研究基于证据理论的 Dempster-Shafer（DS）理论，调查了地下水潜力区的划定，并评估其在地下水潜力制图中的适用性。本研究还分析了地下水硝酸盐浓度的空间分布，并制作了适合饮用的地下水适宜性图。研究工作分以下步骤进行：i）创建地下水条件因素图；ii）评估地下水赋存特征；iii）创建地下水潜力图（GPM）并进行模型验证；iv）收集和化学分析水样；v）评估地下水硝酸盐污染；vi）创建地下水潜力和质量图。还使用接收机操作特性（ROC）曲线法和抽水试验数据对 DS 的性能进行了评估，以确保其推广能力，最终 GPM 的准确率达到 87.76%。对地下水潜力和质量的详细分析表明，“不可接受”区域约占 1479km(2)（60%）。该研究将为地下水管理和开发提供重要信息，因为在这些地区，地下水是主要的水源，其勘探对支持饮用水需求至关重要。
