摘要
在总结对比已有气象干旱指数的基础上,结合帕默尔干旱指数(PDSI)和标准化降水指数(SPI)的优点,提出综合气象干旱指数DI,并对综合气象干旱指数与区域干旱受旱/成灾面积和径流丰枯的相互关系进行分析,结果表明:综合气象干旱指数能够较好地反映区域干旱受旱/成灾范围,以及河道径流的丰枯状况。并且综合气象干旱指数还同时考虑了月季降水量的异常和一段时间的水分亏缺,比单个气象干旱指数更能反映农业干旱和水文干旱。
Based on the summary and comparison made on the existed meteorological drought indices and combined with the merit of the Palmer drought severity index(PDSI) and the standard precipitation index(SPI),an integrated meteorological drought index(DI) is put forward herein,and then the correlation between the drought index and the drought/disastered areas and the runoff distribution is analyzed.The result shows that the regional drought/disastered area and the runoff distribution of the river channel concerned c...
出处
《水利水电技术》
CSCD
北大核心
2009年第4期10-13,共4页
Water Resources and Hydropower Engineering
基金
国家科技支撑计划课题(2006BAC05B02和2007BAC03A060301)
水利部“948”计划项目(200758)
水利部公益性行业科研专项经费项目(200701039)
关键词
气象干旱
帕默尔干旱指数
标准化降水指数
综合气象干旱指数
meteorological drought
Palmer drought severity index
standard precipitation index
integrated drought index
