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<p>Groundwater, crucial for social development, plays an irreplaceable role in environmental protection and societal advancement. However, as global climate change worsens and extreme climate events become more frequent, significant impacts on the stability of groundwater systems have been observed, particularly regarding water levels and quality. Despite this, in-depth research on how climate change simultaneously affects both the water levels and quality of groundwater, and the interactions between them, remains limited. This study explores the hydrochemical traits of Ganfu Plain and groundwater's response to extreme climate events, focusing on the spatiotemporal variations in manganese concentrations and its release patterns. It uses GIS, Principal Component Analysis (PCA), and the Tessier sequential extraction method to analyze 106 groundwater samples from Jiangxi Province gathered between 2018 and 2023. A strong correlation was found between groundwater levels, quality, and the occurrence of extreme climate events. Under extreme climate events, groundwater levels fluctuate in response to extreme drought or precipitation conditions, and these fluctuations particularly in sensitive zones near surface water bodies, significantly affect the changes in groundwater quality. Under the influence of extreme drought conditions, the decline in groundwater levels leads to changes in pH and dissolved oxygen, which are key factors promoting the release of geogenic manganese. At some sample points, manganese concentrations exceeded 0.1&#xa0;mg/L. The findings of this study enhance our understanding of groundwater dynamics and mechanisms of manganese enrichment under extreme climate events. These insights provide a scientific basis for sustainable agricultural water use, ecological protection, and sustainable development under extreme climate events.</p>

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Dynamic Characteristics of Groundwater and its Influence on the Stability of Manganese Under Extreme Climatic Conditions: A Case Study

  • 期刊论文

  • 发表日期：

    2025年6月5日

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  • Chongzhen Zhao,
  • Wenjie Ma,
  • Xiaodong Chu,
  • Yuanyuan Liu,
  • Bai Gao,
  • Ting Chen,
  • Haiyan Liu,
  • Dandan Huang,
  • Bo Zhang,
  • Adimalla Narsimha

摘要

Groundwater, crucial for social development, plays an irreplaceable role in environmental protection and societal advancement. However, as global climate change worsens and extreme climate events become more frequent, significant impacts on the stability of groundwater systems have been observed, particularly regarding water levels and quality. Despite this, in-depth research on how climate change simultaneously affects both the water levels and quality of groundwater, and the interactions between them, remains limited. This study explores the hydrochemical traits of Ganfu Plain and groundwater's response to extreme climate events, focusing on the spatiotemporal variations in manganese concentrations and its release patterns. It uses GIS, Principal Component Analysis (PCA), and the Tessier sequential extraction method to analyze 106 groundwater samples from Jiangxi Province gathered between 2018 and 2023. A strong correlation was found between groundwater levels, quality, and the occurrence of extreme climate events. Under extreme climate events, groundwater levels fluctuate in response to extreme drought or precipitation conditions, and these fluctuations particularly in sensitive zones near surface water bodies, significantly affect the changes in groundwater quality. Under the influence of extreme drought conditions, the decline in groundwater levels leads to changes in pH and dissolved oxygen, which are key factors promoting the release of geogenic manganese. At some sample points, manganese concentrations exceeded 0.1 mg/L. The findings of this study enhance our understanding of groundwater dynamics and mechanisms of manganese enrichment under extreme climate events. These insights provide a scientific basis for sustainable agricultural water use, ecological protection, and sustainable development under extreme climate events.