灾害学Issue(1)：16-20,5.DOI:10.3969/j.issn.1000-811X.2015.01.004
泾河流域1644－2003年洪涝灾害和洪水沉积特征研究
Characteristics of Flood Disaster and Flood Deposition in Jinghe River Basin from the Year of 1644 to 2003
摘要
Abstract
Based on collecting,sorting and analyzing on historical document records in Jinghe River basin from 1 644 to 2003,grades,temporal and spatial variation characteristics and causes of flood disasters during the period are studied.At the same time,the flood characteristics in that period are also analyzed combined with the flood deposition profile in the lower reach of Jinghe River.Results show that the total times of disasters in Jinghe River Basin from 1 644 to 2003 are up to 1 65 ,an average of once every 2.1 8 years.These flood disasters include more moderate and big flood disasters,less mild and catastrophic ones.It is shown that flood disasters in Jinghe River basin had been increasing from 1 644 to 2003,with the highest flood frequency during 1 894-1 953 and the lowest during 1 644-1 723.According to the spatial variation characteristic of Jinghe River basin,flood frequency is the highest in the upper reach and the lowest in the middle reach.Flood disasters happened in the upper,middle and lower reachs at the same time are generally 4-grade catastrophic flood disaster.The cold,warm,dried,moist changes of different climatic stages and destructive vegetations by human activities are main causes for the occur-rence of flood disasters in the basin.Flood disasters in the period of 1 644 -2003 made the floodplain deposition profile of 2.56 m thick in the lower reaches of the Jinghe River.The deposition layers of this profile mainly pro-duced by catastrophic floods,part of big and moderate floods.Flood frequencies recorded by this profile are signifi-cantly less than the historical document records.关键词
洪涝灾害/时空变化特征/灾害成因/洪水沉积/泾河流域Key words
flood disaster/temporal and spatial variation characteristic/causes of flood disaster/flood depo-sition/Jinghe River basin分类
天文与地球科学引用本文复制引用
顾静,黄河清,周杰,赵景波..泾河流域1644－2003年洪涝灾害和洪水沉积特征研究[J].灾害学,2015,(1):16-20,5.基金项目
国家自然科学基金青年科学基金项目（41202134）；国家自然科学基金项目 （）
