水土保持研究2024，Vol.31Issue(2)：18-26,9.DOI:10.13869/j.cnki.rswc.2024.02.023
大沽河流域水文情势变化研究
Study on Hydrological Regime Alteration of Dagu River Basin
摘要
Abstract
[Objective]The purposes of this study are to elucidate the long-term trends and periodic character-istics of runoff in the Dagu River Basin,and to offer the theoretical insights to guide water resource manage-ment and promote sustainable development in the Dagu River Basin.[Methods]The measured runoff data from the Nancun Hydrological Station(1956-2020)and the Zhazi Hydrological Station(1956-2016)were used to analyze the trend of annual runoff changes and abrupt change times using the Mann-Kendall test and sliding t-test.The Morlet continuous complex wavelet method was used to analyze the periodic characteristics of multi-year runoff in the basin.[Results]The annual runoff in the Dagu River Basin was generally decli-ning,and there was a characteristic of more flow during the flood season(June—September)and less flow during the non-flood season.The peak flow usually occurred in August.The runoff of Nancun Station was abrupt in 1976,and the runoff of Zhazi station was abrupt in 1979.The runoff of the Dagu River Basin exhib-ited significant periodic variations at multiple time scales,with a dominant period of around 20 years,and significant oscillations before the 1980s.[Conclusion]The long-term series runoff of Dagu River Basin showed a trend of significant decline,and the basin runoff suddenly changed in the 1970s,and there were periodic changes in different time scales.In the future,the research on the mechanism of runoff change should be strengthened.关键词
水文情势/大沽河流域/Mann-Kendall检验法/滑动t检验法/Morlet小波分析Key words
hydrological regime/Dagu River Basin/Mann-Kendall test/sliding t-test method/Morlet wavelet analysis分类
建筑与水利引用本文复制引用
杨富香,拾兵,王成见..大沽河流域水文情势变化研究[J].水土保持研究,2024,31(2):18-26,9.基金项目
国家自然科学基金(NSFC-山东联合基金)"海洋动力对黄河三角洲地貌演变调控机制与岸滩稳定"(U2006227) （NSFC-山东联合基金）
