模糊综合法在区域干旱评价中的应用  

Application of Fuzzy Comprehensive Method in Regional Drought Assessment

作　　者：易知之[1] 梁忠民[1] 赵卫民[2] 刘晓伟[2] 刘代勇[1] 

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]黄河水利委员会水文局,河南郑州450004

出　　处：《人民黄河》2012年第6期68-70,共3页Yellow River

基　　金：水利部公益性行业科研专项(200901022)

摘　　要：以西安市为典型研究区域,选择连续无降水天数、降水量距平百分比、相对湿润度指数、标准化降水指数、作物缺水率为干旱指标,对研究区域进行单指标、多指标综合和区域综合干旱评价。评价结果表明:模糊综合法较好地解决了各单指标评价结果差异较大的问题;区域综合干旱评价结果与实际干旱状况基本吻合,模糊综合法在区域干旱评价中具有一定的可信度。Choosing Xi＇ an as the typical research area, this paper selected continuous no precipitation days, precipitation anomaly percentage, rel- ative moisture index, the standardized precipitation index and crop water stress rate to evaluate the drought with single index, then with multi indi- ces, and finally got integrated regional drought evaluation. The evaluation results show that the fuzzy comprehensive method can solve the problem that there is much difference between regional drought evaluations of the single index. The evaluation conclusion matches with the actual drought situation, which implies that the fuzzy comprehensive method is applicable to multi index comprehensive drought assessment.

关 键 词：模糊综合法 综合评价 干旱 西安市 

分 类 号：S423[农业科学—植物保护]