水土保持研究2025，Vol.32Issue(1)：141-147,159,8.DOI:10.13869/j.cnki.rswc.2025.01.021
河龙区间典型流域径流年内分配对水土保持生态建设的响应
Responses of intra-annual runoff to remarkable soil and water conservation projects in the Hekouzhen-Longmen region
摘要
Abstract
[Objective]The aim of this study is to reveal the characteristics of multi-year runoff variation in different geomorphic areas in the Hekouzhen-longmen region,and to investigate responses of intra-annual runoff to soil and water conservation measures in these watersheds.[Methods]Three watersheds in different landform regions(Tuwei River,Sanchuan River,and Yan River)were selected,representing the sandy region,rocky mountain region,and loess cover region,respectively.The Gini coefficient and Lorentz asymmetry coefficient were constructed to quantify the evenness of intra-annual runoff using runoff observations during 1960 to 2019.[Results](1)Runoff of Tuwei River,Sanchuan River,and Yan River decreased significantly during 1960 to 2019,with the decrease rate of-0.05 million m3/a,-0.03 million m3/a,and-0.02 million m3/a,respectively.(2)The Intra-annual runoff in different landform regions were different.The Gini coefficients of Tuwei River,Sanchuan River and Yan River were 0.2,0.35 and 0.6,respectively.The intra-annual runoff in the aeolian sandy area showed the highest eveness,followed by the rocky mountain area,while the loess covered area displayed the most uneven distribution.(3)The Gini coefficient of runoff in the three landform regions showed the decreasing trend,and the concentration rate of intra-annual runoff also decreased during 1960 to 2019.(4)NDVI,terraced fields and silting dam construction had significant negative correlation with Gini coefficient of runoff in the three landform regions.[Conclusion]Soil and water conservation projects in the Hekouzhen-Longmen region played a positive role in regulating the intra-annual runoff.关键词
水土保持与荒漠化治理/径流年内分配/基尼系数/河龙区间Key words
soil and water conservation/intra-annual runoff/Gini coefficient/Hekouzhen-Longmen region分类
水利科学引用本文复制引用
陈玮,孙彭成,肖培青,李琼芳,焦鹏..河龙区间典型流域径流年内分配对水土保持生态建设的响应[J].水土保持研究,2025,32(1):141-147,159,8.基金项目
国家自然科学基金黄河水科学联合基金重点项目(U2243210) （U2243210）
中央科研院所基本科研业务费项目(HKY-JBYW-2022-09) （HKY-JBYW-2022-09）
