海河水利Issue(4)：4-11,8.DOI:10.3969/j.issn.1004-7328.2024.04.002
京津冀地区近50a降水时空变化分析
Spatiotemporal Changes of Precipitation Across the Beijing-Tianjin-Hebei Region from 1973 to 2022
摘要
Abstract
In order to clarify the spatiotemporal variation characteristics of precipitation across Beijing-Tianjin-Hebei region in recent years,the daily and monthly precipitation data in recent 50 years are processed and analyzed by using mathematical statistics,spatial interpolation and M-K significance analysis,combined with regional DEM data.The results show that the annual precipitation shows no significant increase trend,and there is a periodic change with an average period of about 20 years in the Beijing-Tianjin-Hebei region;The instability of annual precipitation is increasing,and the instability of precipitation in other seasons is increasing except in spring.Summer precipitation has the strongest correlation with annual precipitation.The annual precipitation is decreasing from the southeast coast to the northwest inland.The precipitation in spring,autumn and winter is characterized by more on both sides and lower in the middle,and the distribution characteristics of summer precipitation are consistent with those of annual precipitation.The annual precipitation in most areas shows an increasing trend,and the spatial distribution of the increase is opposite to that of the annual precipitation,and there is still the highest consistency between summer precipitation and annual precipitation.关键词
降水时空变化/空间插值/M-K显著性检验/小波分析/京津冀地区Key words
spatiotemporal variation of precipitation/spatial interpolation/M-K significance test/wavelet analysis/Beijing-Tianjin-Hebei Region分类
建筑与水利引用本文复制引用
纪贺,殷睿,尹海姣,张振卿..京津冀地区近50a降水时空变化分析[J].海河水利,2024,(4):4-11,8.基金项目
第三次新疆综合科学考察子课题"气候变化情境下干旱对伊犁河流域典型作物的影响评估(2022XJKK0603-03)" （2022XJKK0603-03）
