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Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (3): 57-68.DOI: 10.7522/j.issn.1000-694X.2022.00142

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Characteristics of runoff change in the Shiyang River Basin

Ran Duan1(), Zongjie Li1(), Yu Wang1, Xiaoying Liu1, Juan Gui2, Pengfei Liang2, Yuchen Li2, Jian Xue2, Mengqing Liu1, Bin Xu1   

  1. 1.School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China
    2.Key Laboratory of Ecohydrology of Inland River Basin / Gansu Qilian Mountains Ecology Research Center,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
  • Received:2022-08-31 Revised:2022-10-14 Online:2023-05-20 Published:2023-05-31
  • Contact: Zongjie Li

Abstract:

Based on the month-by-month precipitation and runoff data from 12 hydrological stations and 35 rainfall stations in the main stream and eight tributaries of the Shiyang River Basin, wavelet analysis and double accumulation curve were used to study the change characteristics of runoff in the Shiyang River Basin. The results showed that: (1) The overall trend of runoff in the Shiyang River Basin was decreasing, with an average decrease of 0.37 billion m3 per 10 a.The runoff in the main stream of Shiyang River, Jinta River, Zamu River, Huangyang River and Gulang River decreased, and the runoff in the Xida River, Dongda River, Xiying River and Dajing River increased. (2) Nine hydrological stations in the Shiyang River Basin have periodic variations on time scales of 2-10 a and 10-30 a, among which the Zamusi station and the Huangyanghe reservoir station also have long periodic variations of 30-60 a, and the nine hydrological stations have the most obvious changes in abundance and depletion on time scales of 24, 21, 21, 21, 43, 45, 22, 17, 21 a, respectively. (3) The abrupt changes in the Shiyang River main stream and eight major tributaries occurred in 1971, 2014, 2000, 2018, 1960, 1959, 1962, 1994 and 1965, respectively, in which the runoff decreased after abrupt changes in the Shiyang River main stream, Jinta River, Zamu River, Huangyang River and Gulang River, increased after abrupt changes in the Xida River, Xiyang River and Dajing River, and did not have abrupt changes in the Dongda River. The results of the study can provide reference for the scientific management and optimal allocation of water resources in the Shiyang River basin and the implementation of subsequent ecological projects.

Key words: Shiyang River Basin, climate change, runoff change

CLC Number: