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This study develops and applies an integrated framework for analyzing spatiotemporal patterns of blue-green water. The framework combines Latin Hypercube sampling with one-factor-at-a-time (LH-OAT) method, SWAT modelSoil and Water Assessment Tool (SWAT) model, and blue-green water accounting methodology, enabling simultaneous simulation of streamflow processes and quantification of blue-green water distribution across spatiotemporal dimensions. Applied to the Jiziwan Region of the Yellow River BasinYellow River Basin (YRB), the framework reveals: (i) the SWAT modelSoil and Water Assessment Tool (SWAT) model was demonstrated to be well-suited for the study area, the parameters (CN2, TRNSRCH and SLSUBBSN)are the most sensitive parameters to streamflow output; (ii) the spatial distribution of blue and green waterBlue and green water resources in the basin is uneven, the average annual amount of blue water in the subbasins of the study area ranged from about 0 to 85 mm, and the average annual amount of green water ranged from about 140 mm to 680 mm. (iii) interannual variability of blue and green waterBlue and green water fluxes during 2006–2019 exhibited strong precipitation dependence, with green water demonstrating greater temporal stability compared to the more dynamic blue water response.

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Spatial–Temporal Variations in Blue and Green Water Resources in the Jiziwan Region of the Yellow River Basin

  • 会议论文

  • 发表日期：

    2026年

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  • Yue Qiu,
  • Yongping Li,
  • Guohe Huang,
  • Zhipeng Xu,
  • Yanfeng Li

摘要

This study develops and applies an integrated framework for analyzing spatiotemporal patterns of blue-green water. The framework combines Latin Hypercube sampling with one-factor-at-a-time (LH-OAT) method, SWAT modelSoil and Water Assessment Tool (SWAT) model, and blue-green water accounting methodology, enabling simultaneous simulation of streamflow processes and quantification of blue-green water distribution across spatiotemporal dimensions. Applied to the Jiziwan Region of the Yellow River BasinYellow River Basin (YRB), the framework reveals: (i) the SWAT modelSoil and Water Assessment Tool (SWAT) model was demonstrated to be well-suited for the study area, the parameters (CN2, TRNSRCH and SLSUBBSN)are the most sensitive parameters to streamflow output; (ii) the spatial distribution of blue and green waterBlue and green water resources in the basin is uneven, the average annual amount of blue water in the subbasins of the study area ranged from about 0 to 85 mm, and the average annual amount of green water ranged from about 140 mm to 680 mm. (iii) interannual variability of blue and green waterBlue and green water fluxes during 2006–2019 exhibited strong precipitation dependence, with green water demonstrating greater temporal stability compared to the more dynamic blue water response.