摘要
近年来我国旱涝事件呈现出广发和频发趋势,严重破坏了水资源供需平衡,极大地制约着国民经济的快速发展。依据汾渭平原水文、气象和历史旱灾资料,划分了干旱事件等级,绘制了干旱事件图谱,分析发现汾渭平原近年来发生干旱事件的频次越来越密集。利用汾河平原和渭河平原长序列年降水资料(1951年-2012年),基于SPI法计算结果,分析了两平原降水的丰枯异步性和旱涝事件的重现期,印证了汾渭平原可以进行旱涝"空间集合应对"的条件,为进一步优化晋陕两省水资源配置提供了有力的技术支撑。
The drought and waterlogging in China have been showing a wider and more frequent trend in recent years,which can destroy the supply and demand balance of water resources seriously,and restrict the development of the national economy greatly.Firstly,based on the hydrological,meteorological and drought disaster data in Fen-wei plain,drought events grades were designed and the related mappings were drawn;The results show that the drought events was frequently observed in recent years.Secondly,the drought-waterlogging asynchronism and the hydrologic return period in Fen-wei plain was analyzed using the precipitation data（1951-2012）based on SPI,which reflects the condition space set comprehensive responses at the same time in Fenwei plain.The results of this study could supply the reference to water resources optimization in Shanxi and Shaanxi province.
出处
《南水北调与水利科技》
CAS
CSCD
北大核心
2016年第1期90-95,共6页
South-to-North Water Transfers and Water Science & Technology
基金
中国工程院重大咨询项目(2012-ZD-13)
国家自然科学基金(面上项目
51279207)~~
关键词
干旱事件
干旱灾害等级图谱
丰枯异步性
SPI
共轭年
汾渭平原
南水北调西线工程
drought events
drought disaster grades mapping
drought-waterlogging asynchronism
SPI
conjugate years
Fen-wei plain
the west route of South to North Water Diversion Project
