黄土高原典型流域河川径流水文情势变化及其归因分析

张舒羽; 赵广举; 穆兴民; 田鹏; 高鹏; 孙文义

doi:10.13961/j.cnki.stbctb.2021.04.001

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黄土高原典型流域河川径流水文情势变化及其归因分析

试验研究

- 黄土高原典型流域河川径流水文情势变化及其归因分析
- Hydrologic Regime Change and Its Attribution Analysis of River Runoff in Typical Watershed on Loess Plateau
- 水土保持通报 2021年41卷第4期页码：1-8
- 作者机构：
  
  1. 西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  2. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
  3. 西北农林科技大学资源与环境学院, 陕西杨凌,712100
- 作者简介：
- 基金信息：
  
  国家重点研发计划项目“黄河水沙变化机理与趋势预测”（2016YFC0402401）;国家自然科学基金项目（4207707,2077075）;中国科学院“西部之光”项目（XAB2017A03）
- DOI：10.13961/j.cnki.stbctb.2021.04.001
  中图分类号： TV121.4;P333
- 纸质出版：2021
- 稿件说明：
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张舒羽, 赵广举, 穆兴民, 等. 黄土高原典型流域河川径流水文情势变化及其归因分析[J]. 水土保持通报, 2021,41(4):1-8.

Zhang Shuyu, Zhao Guangju, Mu Xingmin, et al. Hydrologic Regime Change and Its Attribution Analysis of River Runoff in Typical Watershed on Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2021, 41(4): 1-8.
张舒羽, 赵广举, 穆兴民, 等. 黄土高原典型流域河川径流水文情势变化及其归因分析[J]. 水土保持通报, 2021,41(4):1-8. DOI： 10.13961/j.cnki.stbctb.2021.04.001.

Zhang Shuyu, Zhao Guangju, Mu Xingmin, et al. Hydrologic Regime Change and Its Attribution Analysis of River Runoff in Typical Watershed on Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2021, 41(4): 1-8. DOI： 10.13961/j.cnki.stbctb.2021.04.001.

摘要

[目的] 分析黄土高原典型流域河川径流水文情势变化及其原因，为该区域水土保持与水资源高效利用提供科学支撑。[方法] 选取渭河支流散渡河与无定河支流大理河为研究区，利用甘谷站和绥德站1965—2018年的气象水文资料，采用线性回归、Mann-Kendall检验、累积距平和双累积曲线法分析散渡河和大理河的径流变化特征及其驱动因素，采用改进的RVA法分析梯田和淤地坝为主的水土保持措施对不同河流水文情势变化的影响。[结果] 两条河流的年径流量呈显著减少趋势（p<0.01），并在20世纪90年代前后发生突变。采用改进的变异性范围（RVA）法计算散渡河和大理河的径流综合改变度分别属高度改变（90.12%）和中度改变（60.66%），32个水文变化指标中，流量变化改变率指标受到的影响最为显著。[结论] 以梯田措施为主的散渡河月中值流量和年最小流量均大幅减小，年最小流量发生时间明显延迟且低流量脉冲历时增加。以坝库工程为主的大理河月中值流量受季节变化影响，年最小1 d和3 d流量增加且低流量脉冲次数减小。

Abstract

[Objective] The hydrologic regime change in typical watershed on Loess Plateau was studied

and its attribution analysis was carried out

in order to provide scientific support for soil and water conservation and efficient utilization of water resources in different regions of the Loess Plateau. [Methods] Sandu River (a tributary of Weihe River) and Dali River (a tributary of Wuding River) were selected as the study areas

and the traits in variations of streamflow and their driving factors from 1965 to 2018 were analyzed based on meteorological and hydrological data at Gangu and Suide hydrological stations by using the linear regression

Mann-Kendall test

accumulated anomaly

and double mass curve methods. The improved range of variability approach was employed to analyze the impact of the hydrological alterations in different river by soil and water conservation dominated by terracing and damming. [Results] The annual runoff showed significant decreasing trends(p<0.01) and the abrupt changes occurred in around 1990s in Sandu River and Dali River. The alteration degree of runoff in Sandu River was high (90.12%) and in Dali River was moderate (60.66%) calculated by the improved range of variability approach (RVA) method. Among 32 indicators of hydrologic alteration (IHA)

the rise and fall rate of flow were affected most significantly. [Conclusion] In the Sandu River (dominated by terracing)

both the magnitude of monthly median flow and the annual minimum flow decreased dramatically

timing of annual minimum flow delayed and duration of low pulses increased. In the Dali River (dominated by damming)

the magnitude of monthly median flow depended on the seasonal alteration. The annual 1-day and 3-day minimum flow increased and frequency of low pulses declined.

关键词

Keywords

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