Implications of seasonal variations of hydrogeochemical analysis using GIS, WQI, and statistical analysis method for the semi-arid region

作者：Chaitanya B. Pande, Abebe Debele Tolche, Johnbosco C. Egbueri, Lariyah Mohd Sidek, Raj Singh, Arun Pratap Mishra, Johnson C. Agbasi, Samyah Salem Refadah, Fahad Alshehri, Mohd Yawar Ali Khan, Miklas Scholz, Saad Sh. Sammen · 发表于：Applied Water Science · 年份：2025 · DOI：10.1007/s13201-025-02387-4 · 被引用次数：45 · 研究领域：Soil and Land Suitability Analysis、Geochemistry and Geologic Mapping、Water Quality and Pollution Assessment

Groundwater quality assessment is crucial for sustainable water resource management in Maharashtra, India, where groundwater helps for main water sources for irrigation, domestic, and industrial sectors. Despite numerous studies on regional groundwater quality, there remains a lack of integrated research combining hydrogeochemical analyses with advanced spatial and statistical techniques. This study addresses this gap by developing a comprehensive groundwater quality assessment framework that uniquely integrates hydrogeochemical analyses, geographic information system (GIS) techniques, water quality index (WQI), and multivariate statistical approaches in the Morna River Basin. A total of 82 water samples were analyzed for physicochemical parameters in the pre-monsoon (PRMS) and post-monsoon (POMS) seasons. The WQI analysis revealed that 46.15% of samples exhibited excellent water quality, while 48.72% showed good quality during both seasons, though a notable quality decrease was observed during the POMS. Correlation analysis identified significant positive associations ( p < 0.05) between key parameters, including Mg-TH, EC-pH, and Ca 2+ -TH. Principal component analysis identified six components explaining 75.534% of total variance in PRMS, with the first component contributing 17.437%. In POMS, five components explained 70.963% of variance, with the first component contributing 20.653%. Factor analysis revealed that mineral dissolution, agricultural activities, and anthropo...