石羊河上游径流量与气象要素关联性分析
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P333

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国家重点基础研究发展计划(973计划)


Correlation Analysis between Runoff and Meteorological Elements in the Upper Reaches of Shiyang River
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    摘要:

    气象因子是驱动径流演变的重要因素,运用交叉小波方法分析了石羊河上游四条典型支流的径流量与气象要素之间的共振周期规律,揭示了不同时域、频域上相关性的程度变化和异常情况,对现有相关性研究进行了补充。结果表明:西大河水库站与大靖峡水库站径流量总体呈上升趋势而南营水库站与古浪站呈下降趋势,径流量与降水量的周期规律及相关性最显著,其次是最高气温,最低气温最差,共振周期范围为2~8a。通过与现有成果的对比分析,表明该方法对探究气象因子突变性、水文气象要素相关性及其时频变化有重要的指导意义,石羊河流域在针对性补水时应优先考虑从降水环节出发,实施人工增雨作业。

    Abstract:

    Meteorological factors are important factors driving the evolution of runoff. Cross-wavelet method is used to analyze the resonance cycle law between runoff and precipitation, maximum temperature and minimum temperature of four typical tributaries in the upper reaches of Shiyang River, which reveals the degree changes and anomalies of correlation in different time domains and frequency domains, supplementing the existing correlation research. The results showed that the runoff at Xidaxihe Reservoir station and Dajingxia Reservoir station had an increasing trend while the runoff at Nanying Reservoir station and Gulang station decreased. The cycle pattern and correlation between the runoff and precipitation were the most significant, followed by the maximum temperature and the minimum temperature, and the resonance period ranges from 2 to 8 a. The analysis shows that this method plays an important role in guiding the exploration of the mutation of meteorological factors, the correlation of hydrometeorological elements and their time-frequency changes. When implementing targeted water replenishment in the Shiyang River Basin, priority should be given to artificial rainfall from the precipitation link.

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徐亦凡,董增川,倪晓宽,等. 石羊河上游径流量与气象要素关联性分析[J]. 科学技术与工程, 2024, 24(13): 5278-5285.
Xu Yifan, Dong Zengchuan, Ni Xiaokuan, et al. Correlation Analysis between Runoff and Meteorological Elements in the Upper Reaches of Shiyang River[J]. Science Technology and Engineering,2024,24(13):5278-5285.

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  • 收稿日期:2023-08-10
  • 最后修改日期:2024-03-05
  • 录用日期:2023-12-02
  • 在线发布日期: 2024-05-17
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