水利学报Issue(5)：574-584,11.DOI:10.13243/j.cnki.slxb.2014.05.009
基于可变模糊评价法的渭河流域综合干旱分区研究
Variable fuzzy evaluation on comprehensive divisions of drought in the Wei River basin
摘要
Abstract
For the meteorological and hydrological droughts in the Wei River basin, a drought index sys-tem has been established using the data at 21 meteorological and 8 hydrological stations from 1960 to 2010, and the drought is graded into 5-level from normal to extreme drought. Then the drought condition is evaluated by the variable fuzzy evaluation method based on the theory of the unity of opposites and the mutual change law of quality and quantity. Moreover the spatiotemporal variation in the divisions near 51years is analyzed with accumulated departure and wavelet analysis method. The results are as follows:the drought showed an increasing trend in recent years and the trend will continue;the qualitative change points of drought degree occurred around 1973 and 1997 in most of the divisions;there is a drought peri-od of 8 years and 27 years. Therefore, the research results can evaluate the drought condition quantitative-ly and make up for the deficiency of only using meteorological or hydrological drought index.关键词
渭河流域/干旱/评价指标体系/可变模糊评价Key words
Wei River basin/drought/index system/variable fuzzy evaluation分类
天文与地球科学引用本文复制引用
雷江群,黄强,王义民,刘登峰..基于可变模糊评价法的渭河流域综合干旱分区研究[J].水利学报,2014,(5):574-584,11.基金项目
国家自然科学基金资助项目（51190093，51179148，51179149）；陕西省重点科技创新团队基金项目（2012KCT10）；教育部新世纪优秀人才支持计划项目（NCET-10-0933）；教育部博导基金项目 （）
