Abstract：
Groundwater is the main source of water for agriculture, industry, and families in arid areas. At present, there is an urgent need to protect groundwater due to human activities. In this study, the Qingshui River Basin was selected as the study area. Based on the DRASTIC model, the DRASTIC-Land use type (DRASTICL) model and the analytic hierarchy process-DRASTICL (AHP-DRASTICL) model were constructed by optimizing the indicators and weights. And the three models were applied to calculate the groundwater vulnerability index (GVI), and the groundwater vulnerability map (GVM) was drawn. The validation results of Spearman correlation coefficient show that the DRASTICL model and the AHP-DRASTICL model have higher correlation, which indicates that the optimized model is more accurate. Among them, the AHP-DRASTICL model has the highest correlation coefficient (ρ = 0.92), which is more in line with the actual situation. The results of this study can provide scientific guidance for the protection and utilization of groundwater in the Qingshui River Basin. And it is of guiding significance for the study of groundwater vulnerability, especially for groundwater management in arid and semi-arid areas.
摘要：
地下水是农业用水的主要来源,工业,和干旱地区的家庭。目前,由于人类活动，迫切需要保护地下水。在这项研究中,选择清水河流域作为研究区域。基于DRASTIC模型,通过优化指标和权重,构建DRASTIC-土地利用类型(DRASTICL)模型和层次分析法-DRASTICL(AHP-DRASTICL)模型。并应用这三种模型计算了地下水脆弱性指数(GVI),绘制了地下水脆弱性图(GVM)。Spearman相关系数的验证结果表明,DRASTICL模型与AHP-DRASTICL模型具有较高的相关性,表明优化后的模型更加准确。其中,AHP-DRASTICL模型的相关系数最高(ρ=0.92)，这更符合实际情况。研究结果可为清水河流域地下水的保护与利用提供科学指导。对地下水脆弱性研究具有指导意义,特别是干旱和半干旱地区的地下水管理。
