• Run-off analyses using isotopes and hydrochemistry in Yushugou River basin, eastern Tianshan Mountains

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    • Keywords

       

      Stable isotopes; run-off composition; hydrograph separation; Yushugou River basin.

    • Abstract

       

      Yushugou River basin of East Tianshan Mountains receives water from melting glaciers. In recent years, the glaciers retreated strongly due to global warming which intensified the water cycle in the river basin. For this reason, the relation of water bodies based on hydrochemistry and isotope in the summer flood was carried out. Hydrochemistry research showed that there was frequent hydraulic interaction between river water and groundwater. Studying the isotopes and Cl of river water, glacier meltwater, groundwater and precipitation, indicated that Yushugou River was recharged by the glacier meltwater, groundwater and precipitation during the summer flood period. The analysis result based on the three-component mixing model showed that Yushugou River was recharged by 54.9% of glacier meltwater, 37.6% of the run-off came from groundwater, while less than 8% was contributed by precipitation. The study suggests that the role of glacier meltwater and groundwater, especially glacier meltwater, should be specially concerned in water resource protection and reasonable utilization, and the injection of glacier meltwater is the main reason for run-off variation in this alpine basin during the summer flood period.

    • Author Affiliations

       

      Xiaoyan Wang1 Zhongqin Li2 Chanwen Jiang1

      1. Key Laboratory for Ecology and Environment of River Wetlands in Shaanxi Province, Chemistry and Environment Science College, Weinan Normal University, Weinan 714000, Shanxi, China.
      2. Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China.
    • Dates

       
  • Journal of Earth System Science | News

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