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<p>In this study, the stable isotopic and hydrochemical composition of surface water is systematically investigated to reveal the potential sources, influencing factors and chemical weathering processes. Results show that the primary recharge source of surface water is local precipitation, and its isotopic composition influenced by both evaporation effects and altitude effects. Multiple factors can affect the major ion composition in surface water, including the atmospheric precipitation, anthropogenic input, and rock weathering. The average contribution rates from each endmember are 7.17%, 25.16% and 67.67%, respectively.</p>

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Stable isotopes and hydrochemical characteristics of surface water in the water-level fluctuation zone of the Jinsha River Basin

  • 期刊论文

  • 发表日期：

    2025年11月11日

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  • Ke Jin,
  • Yang Lu,
  • Qianzhu Zhang,
  • Yue Hu,
  • Yihang Wu,
  • Dan Wan,
  • Runing Hou

摘要

In this study, the stable isotopic and hydrochemical composition of surface water is systematically investigated to reveal the potential sources, influencing factors and chemical weathering processes. Results show that the primary recharge source of surface water is local precipitation, and its isotopic composition influenced by both evaporation effects and altitude effects. Multiple factors can affect the major ion composition in surface water, including the atmospheric precipitation, anthropogenic input, and rock weathering. The average contribution rates from each endmember are 7.17%, 25.16% and 67.67%, respectively.