Abstract：
Groundwater vulnerability can partially reflect the possibility of groundwater contamination, which is crucial for ensuring human health and a good ecological environment. The current study seeks to assess the groundwater vulnerability of Zhengzhou City by adopting an amended version of the traditional DRASTIC model, i.e., the DRASTICL model, which incorporates land use type indicators. More specifically, the AHP-DRASTICL, entropy-DRASTICL, and AE-DRASTICL models were established by optimizing weights using the analytic hierarchy process (AHP) and entropy weight method. The evaluation results for these five models were divided into five levels: very low, low, medium, high, and very high. Using Spearman\'s rank correlation coefficient, the nitrate concentration was used to verify the groundwater vulnerability assessment results. The AE-DRASTICL model was found to perform the best, with a Spearman correlation coefficient of 0.78. However, the AHP and entropy weight method effectively improved the accuracy of vulnerability assessment results, making it more suitable for the study area. This study provides important insights to inform the design of strategies to protect groundwater in Zhengzhou.
摘要：
地下水脆弱性可以部分反映地下水污染的可能性，这对于确保人类健康和良好的生态环境至关重要。本研究旨在通过采用传统DRASTIC模型的修正版本来评估郑州市的地下水脆弱性，即，DRASTICL模型,其中包括土地利用类型指标。更具体地说,AHP-DRASTICL,熵-龙,采用层次分析法(AHP)和熵权法优化权重,建立AE-DRASTICL模型。对这五个模型的评估结果分为五个级别：非常低，低,中等,高,而且非常高。使用Spearman的等级相关系数，硝酸盐浓度用于验证地下水脆弱性评估结果。AE-DRASTICL模型被发现表现最好，Spearman相关系数为0.78。然而,层次分析法和熵权法有效提高了脆弱性评估结果的准确性,使其更适合研究区域。本研究为郑州地下水保护策略的设计提供了重要的启示。
