人民黄河2024，Vol.46Issue(5)：40-45,49,7.DOI:10.3969/j.issn.1000-1379.2024.05.006
1960-2019年永定河流域降水演化特征
Precipitation Evolution Characteristics of Yongding River Basin in 1960-2019
摘要
Abstract
Based on the daily rainfall data and interpolation data of 53 meteorological stations in and around the Yongding River Basin in the past 60 years,the evolution characteristics of precipitation in the Yongding River Basin from 1960 to 2019 were analyzed by various variation diagnosis methods.The results show that a)the annual rainfall in the Yongding River Basin has a downward trend.On the seasonal scale,the summer rainfall has a significant downward trend,and the spring,autumn and winter rainfalls have an upward trend.b)In terms of spatial distribution,the annual precipitation shows an insignificant downward trend in most areas,a significant downward trend in a small area below the Guanting Reservoir,and an insignificant upward trend in spring,autumn and winter,only an insignificant downward trend in some areas.On the contrary,the summer precipitation shows a downward trend in most areas of the basin.c)After the abrupt change of precipitation,the distribution function of annual precipitation increases at the minimum value and decreases at the maximum value,and the distribution func-tion of precipitation in July and August decreases as a whole.关键词
降水特征/趋势检验/突变检验/概率分布/永定河流域Key words
precipitation characteristics/trend analysis/abruption tests/probability distribution/Yongding River Basin分类
建筑与水利引用本文复制引用
朱伟,王银堂,胡庆芳,张野,云兆得..1960-2019年永定河流域降水演化特征[J].人民黄河,2024,46(5):40-45,49,7.基金项目
国家自然科学基金资助项目(52279019) （52279019）
北京市科技计划课题(Z191100006919002) （Z191100006919002）
