陕西水利Issue(8)：1-4,4.
1981年～2021年拱坝河径流量时序变化特征及演变趋势研究
Study on the Temporal Variation Characteristics and Evolution Trend of Runoff in the Gongba River from 1981 to 2021
摘要
Abstract
By collecting measured runoff data from the downstream Huangluba Hydrological Station in the basin,this study analyzes the intra-annual distribution,interannual variation,evolution trend,and mutation years of runoff using methods such as mathematical statistics,moving average,linear regression,moving T-test,and SNHT test.The results show that:precipitation and runoff exhibit extremely uneven intra-annual distribution,with relatively stable patterns over time,but the extremes of precipitation and runoff do not always correspond;the intra-annual variation coefficient of runoff(Cv)shows a general decreasing trend over time,indicating that the intra-annual distribution of runoff is becoming increasingly stable and uniform;the interannual variation coefficient of runoff is Cv=0.24,reflecting relatively stable interannual variation;overall,runoff shows a slight but statistically insignificant decreasing trend;the mutation year for runoff is identified as 1993,though the change is not significant.This research provides valuable data support for watershed water resource management,rational water use,and river-lake governance,and lays the foundation for further studies on the impact of climate change and human activities on runoff.关键词
径流量/时序变化/趋势Key words
Runoff/temporal variation/trend分类
建筑与水利引用本文复制引用
胡亮..1981年～2021年拱坝河径流量时序变化特征及演变趋势研究[J].陕西水利,2025,(8):1-4,4.基金项目
2021年甘肃省水利科学试验研究及技术推广项目第53号 （）
