干旱区研究2012，Vol.29Issue(3)：541-546,6.
历史时期以来渭河下游洪水灾害与环境演变关系
Study on Relationship between Flood Disasters and Ecoentironment in the Lower Reaches of the Weihe River since Historical Periods
摘要
Abstract
Flood disasters have occurred for several times in the lower reaches of the Weihe River since recent 30 years and resulted in enormous destruction. It is more and more necessary to deeply research the occurring laws of flood disasters in the study area. In this paper, the change in flood disasters during the period from 170 BC to 1992 AD was analyzed based on the historical flood disaster records in the lower reaches of the Weihe River. The results show that 243 flood disasters were recorded in the lower reaches of the Weihe River, in which they occurred less frequently before 630 AD but more frequently after that. From 1920, flood disasters occurred more and more frequently, but they reduced to some extent after 1960. According to the historical data, fluctuation of the occurring frequency of flood disasters could be divided into 7 periods, the relationship between flood disasters and entironment evolution was analyzed, and the results show that the occurrence of flood disasters during the historical periods was directly related to the entironment evolution in the drainage basin. Therefore, it is very important for reducing flood disasters to intensify the entironment construction in the drainage basin.关键词
历史时期/洪水灾害/发生频率/环境演变/渭河流域Key words
historical period/flood disaster/frequency/entironment/Weihe River分类
资源环境引用本文复制引用
刘建芳,查小春..历史时期以来渭河下游洪水灾害与环境演变关系[J].干旱区研究,2012,29(3):541-546,6.基金项目
陕西省社会科学基金项目（10J024）和陕西省中央高校基本科研业务费专项基金项目（GK200901007）资助 （）
