人民长江2026，Vol.57Issue(2)：24-36,13.DOI:10.16232/j.cnki.1001-4179.2026.02.004
基于SPEI指数的淮河流域涝灾时空演变规律研究
Study on spatial and temporal variation characteristic of waterlogging in Huaihe River Basin based on SPEI
摘要
Abstract
Waterlogging significantly impacts agricultural production in the Huaihe River Basin.Revealing the spatial and tem-poral variation characteristics of waterlogging in Huaihe River Basin is crucial for disaster prevention and mitigation,as well as en-suring the safety of agricultural production.Meteorological data,including the daily precipitation,daily temperature,sunshine hours from 30 meteorological stations were selected to calculate the standardized precipitation evapotranspiration index(SPEI)from 1965 to 2016.The SPEI was employed to identify the intensity,frequency and areas of waterlogging.Based on this,the temporal and spatial variation characteristics of waterlogging were analyzed.The results indicated that:① During the study period,the an-nual SPEI in the Huaihe River Basin showed an increasing trend.Seasonally,SPEI increased in spring,summer,and autumn,but decreased in winter.② The annual waterlogging intensity reached a maximum of 21.32,primarily consisting of mild and moderate waterlogging.The affected area for each severity level showed a nonsignificant increasing trend.③ Seasonally,the highest water-logging intensities were 17.64 in spring,51.72 in summer,24.53 in autumn and 7.14 in winter.In spring,autumn and winter,mild waterlogging events were predominant,with frequencies reaching 30.76%,21.15%and 19.22%,respectively.The frequen-cy of severe and above waterlogging was highest in summer,reaching 40.37%.The areas that were affected by waterlogging showed an increasing trend in all seasons except winter.These findings provide a certain scientific basis for disaster resistance and mitigation,as well as waterlogging risk prevention and control in the Huaihe River Basin.关键词
涝灾/标准化降水蒸散指数/时空演变/淮河流域Key words
waterlogging/standardized precipitation evapotranspiration index/temporal and spatial evolution/Huaihe River Basin分类
天文与地球科学引用本文复制引用
马颢宇,吴灏,韩旭东,王盼盼,闵诗文,汤怡..基于SPEI指数的淮河流域涝灾时空演变规律研究[J].人民长江,2026,57(2):24-36,13.基金项目
江苏省研究生科研与实践创新计划项目(SJCX24_2248) （SJCX24_2248）
国家自然科学基金项目(52009118) （52009118）
