Physical Mechanism and Model of Runoff and Sediment Variation in Watersheds of Middle and Upper Reseaches of Yellow River

Luo Quanfu; Bao Weimin; Chen Wenbo; Wang Qinhai; Sun Qingxue; Jin Fan; Wang Zhenghua

doi:10.13961/j.cnki.stbctb.2021.02.021

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Physical Mechanism and Model of Runoff and Sediment Variation in Watersheds of Middle and Upper Reseaches of Yellow River

- Physical Mechanism and Model of Runoff and Sediment Variation in Watersheds of Middle and Upper Reseaches of Yellow River
- Bulletin of Soiland Water Conservation Vol. 41, Issue 2, Pages: 156-161(2021)
- 作者机构：
  
  1. 杭州市水库管理服务中心,浙江,杭州,311305
  2. 河海大学水文水资源学院,江苏,南京,210098
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2021.02.021
  CLC： P338
- Published：2021
- 稿件说明：
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Luo Quanfu, Bao Weimin, Chen Wenbo, et al. Physical Mechanism and Model of Runoff and Sediment Variation in Watersheds of Middle and Upper Reseaches of Yellow River[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 156-161.
DOI：

Luo Quanfu, Bao Weimin, Chen Wenbo, et al. Physical Mechanism and Model of Runoff and Sediment Variation in Watersheds of Middle and Upper Reseaches of Yellow River[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 156-161. DOI： 10.13961/j.cnki.stbctb.2021.02.021.

摘要

[目的] 开展黄河流域水沙变异关系模型研究，为流域水沙变化研究提供理论支持。[方法] 从黄河中上游流域水沙变异影响因素分析入手，推导出以微分为基础的水沙变异关系模型。[结果] 模型通过黄土高原和黄河中上游流域7个测站控制流域输沙率和流量变异变量的模拟检验，获得了7个流域输沙率和水流变异模拟平均有效性系数为0.860和0.887，平均相对误差分别为14.8%和6.7%。[结论] 从水流变异、泥沙变异模拟精度和各因素变异贡献比例3个层面检验了模型，初步证明了模型结构的合理性和模拟实际泥沙变异具有的高有效性。

Abstract

[Objective] The relationship model of variation of water and sediment in the Yellow River basin was studied

in order to provide theoretical support for the study on the variation of water and sediment in the basin.[Methods] The driving factors of the variation of water and sediment in watersheds of middle and upper reseaches of the Yellow River were analyzed

and the relationship model of the variation of water and sediment was deduced based on differentiation.[Results] According to the simulation test of the variation of sediment transport rate and flow at seven stations in the Loess Plateau and the middle and upper reaches of the Yellow River

the average validity coefficient of the model was 0.860 and 0.887

and the average relative error was 14.8% and 6.7%

respectively.[Conclusion] The model have been tested from three aspects:the simulation accuracy of flow variation

sediment variation and the contribution ratio of variation of each factor

which preliminarily proves the rationality of the model structure and the high effectiveness of the simulated sediment variation.

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