地下水脆弱性评估:伊朗Doroud-Boroujerd含水层的案例研究

IF 1.3 Q4 ENVIRONMENTAL SCIENCES Environmental Health Engineering and Management Journal Pub Date : 2022-10-14 DOI:10.34172/ehem.2022.44
Leila Byeranvand, A. Afzali
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引用次数: 0

摘要

背景:在伊朗Lorestan省,农业、工业和居民活动导致Doroud-Boroujerd含水层的地下水易受污染。采用一套内在(DRASTIC, IV)和特定(SI, LU-IV)脆弱性评价方法对Doroud-Boroujerd含水层脆弱性进行了研究。方法:含地下水深度、净补给、含水层介质、土壤介质、坡度、渗透带影响、含水层导水率7个参数的DRASTIC模型参数数最多。用总溶解固形物(TDS)指数比较不同方法的效率。结果:在DRASTIC模型中存在中、高两类漏洞,漏洞面积分别为73.71%和26.3%。SI模型分为低、中两类脆弱性。IV模型分为低至高3个等级,其中高等级脆弱性程度最大,占比75.94%。LU-IV模型还包括四类非常低到非常高(92.02%)的漏洞。利用TDS指数对DRASTIC、SI、IV和LU-IV模型的验证表明,漏洞图与TDS值之间存在较弱的相关性,因此可以得出结论,单独使用TDS指数并不是一个很好的验证指标。结论:不同方法脆弱性评价结果普遍显示该地区地下水脆弱性较高,建议采取必要措施对这些宝贵水资源进行预防、控制和管理。
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The assessment of groundwater vulnerability: A case study in the Doroud-Boroujerd aquifer, Iran
Background: Agricultural, industrial, and residential activities have caused the vulnerability of the groundwater of the Doroud-Boroujerd aquifer to pollution in Lorestan province, Iran. This study aimed to investigate the vulnerability of the Doroud-Boroujerd aquifer using a set of intrinsic (DRASTIC, IV) and specific (SI, LU-IV) vulnerability assessment methods. Methods: The DRASTIC model with seven parameters of groundwater depth, net recharge, aquifer media, soil media, slope, the effect of the vadose zone, and hydraulic conductivity of the aquifer has the highest number of parameters. The total dissolved solids (TDS) index was used to compare the efficiency of different methods. Results: The results showed two classes of medium and high vulnerability with an area of 73.71% and 26.3%, respectively, in the DRASTIC model. The SI model had two classes of low and medium vulnerability. The IV model had three classes of low to high vulnerability, of which the high class with an area of 75.94%, had the largest extent. The LU-IV model also included four classes of very low to very high (92.02%) vulnerability. The validation of DRASTIC, SI, IV, and LU-IV models with TDS index showed a weak correlation between vulnerability maps and TDS values, so it can be concluded that this index alone is not a good indicator for validation. Conclusion: The results of vulnerability assessment of different methods generally showed that the groundwater of this area is highly vulnerable, so it is recommended to take the necessary measures to prevent, control, and manage these valuable water resources.
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来源期刊
CiteScore
2.40
自引率
37.50%
发文量
17
审稿时长
12 weeks
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