评估拉贾斯坦邦半干旱地区地下水脆弱性的综合多模型方法:纳入 DRASTIC 和 SINTACS 变体

IF 3.1 Q2 WATER RESOURCES Hydrology Pub Date : 2023-12-04 DOI:10.3390/hydrology10120231
Nadha Gowrish Narisetty, Gaurav Tripathi, S. Kanga, S. Singh, Gowhar Meraj, Pankaj Kumar, B. Đurin, Hrvoje Matijević
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引用次数: 0

摘要

印度拉贾斯坦邦的地下水污染构成了重大挑战,因为该地区严重依赖地下水作为饮用和灌溉资源。鉴于水资源日益短缺和过度开发,本研究评估了该半干旱区地下水污染的易感性。我们应用并比较了漏洞映射方法DRASTIC和SINTACS及其修改版本。这些方法考虑了各种地质和环境因素,如深度到地下水位、补给、含水层电导率、土壤和地形。修改后的版本还整合了土地利用和温度数据,以提高灵敏度。通过比较印度中央地下水委员会(CGWB)的污染物数据,重点关注主要污染物,如氟化物、硝酸盐、氯化物和总溶解固体(TDS),实现了验证。结果与修正后的方法和观测到的地下水离子值高度一致。具体来说,在分析的300个采样点中,超过一半的TDS值超过了300 ppm的允许限值,超过500 ppm的采样点超过了80个。该漏洞分为以下五类:非常低;低;媒介;高;而且非常高。值得注意的是,30.53%的地区在改进的DRASTIC模型下表现为“非常高”脆弱性。贾洛雷、巴利、西罗希和焦特布尔等地区成为高度脆弱地区,而乌代普尔、哥打和斋浦尔等地区则表现出非常高的脆弱性。这项研究强调了开展地下水脆弱性评估的重要性,特别是对于像拉贾斯坦邦这样面临水资源短缺问题的地区。本研究结果对于指导可持续地下水资源管理,倡导该地区持续监测和有效的地下水保护策略具有关键意义。
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Integrated Multi-Model Approach for Assessing Groundwater Vulnerability in Rajasthan’s Semi-Arid Zone: Incorporating DRASTIC and SINTACS Variants
Groundwater pollution in Rajasthan, India, poses significant challenges due to the region’s heavy reliance on this resource for drinking and irrigation. Given the increasing water scarcity and overexploitation, this study assesses the susceptibility of groundwater pollution in this semi-arid area. We applied and compared vulnerability mapping methods, DRASTIC and SINTACS, and their modified versions. These methodologies considered various geological and environmental factors such as depth-to-water table, recharge, aquifer conductivity, soil, and topography. The modified versions also integrated land use and temperature data for enhanced sensitivity. Validation was achieved by comparing contaminant data from the Central Ground Water Board (CGWB), India, focusing on primary contaminants such as fluoride, nitrate, chloride, and total dissolved solids (TDS). The results strongly align with the modified methodologies and observed groundwater ion values. Specifically, more than half of the 300 sample points analyzed indicated TDS values exceeding the permissible 300 ppm limit, with over 80 points surpassing 500 ppm. The vulnerability was classified into the following five categories: very low; low; medium; high; and very high. Notably, 30.53% of the area displayed “very high” vulnerability under the modified DRASTIC model. Districts like Jalore, Pali, Sirohi, and Jodhpur emerged as highly vulnerable zones, while areas within Udaipur, Kota, and Jaipur, among others, showed very high vulnerability. This research highlights the importance of conducting groundwater vulnerability assessments, especially for regions grappling with water scarcity like Rajasthan. The findings from this research are pivotal in guiding sustainable ground water resource management, as well as advocating continual monitoring and effective groundwater conservation strategies in the region.
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来源期刊
Hydrology
Hydrology Earth and Planetary Sciences-Earth-Surface Processes
CiteScore
4.90
自引率
21.90%
发文量
192
审稿时长
6 weeks
期刊介绍: Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences, including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology, hydrogeology and hydrogeophysics. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, ecohydrology, geomorphology, soil science, instrumentation and remote sensing, data and information sciences, civil and environmental engineering are within scope. Social science perspectives on hydrological problems such as resource and ecological economics, sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site. Studies focused on urban hydrological issues are included.
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