基于信息扩散理论的河南省区域干旱等级模糊综合评价  

Assessment of Regional Drought Level Based on Information Diffusion and the Fuzzy Comprehensive Evaluation in Henan Province

作　　者：张成才[1] 陈继祖[1] 叶伟[1] 周勇[1] 

机构地区：[1]郑州大学水利与环境学院,河南郑州450001

出　　处：《郑州大学学报（工学版）》2010年第4期56-60,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省教育厅自然科学研究计划资助项目(2009A610014)

摘　　要：在综合分析河南干旱发生的多种影响因素的基础上,选择降雨量、产流模数、受旱面积比以及综合缺水指数4个要素作为干旱评价指标,并应用信息扩散方法建立了各单个评价指标旱情等级划分标准.通过将模糊识别理论模型引入区域干旱等级评价中,建立综合的干旱评价指标体系,并对干旱等级进行定量评价,该模型应用于河南省的干旱评价中,所得结果能较好的反应各市的综合干旱情况,对指导抗旱工作具有重要意义.In terms of a variety of impact factors for the drought in Henan province,We select four elements as drought evaluation index,including rainfall,runoff modulus,drought area ratio as well as integrated water storage index.The drought level standard for each single evaluation index is established through the application of Information Diffusion Method.The Fuzzy Pattern Recognition Model is introduced into the regional drought level evaluation for the integrated system of arid index evaluation,which carries out quantitative evaluation of drought levels.Meanwhile,the model is applied to drought level evaluation in Henan province,which can reflect the comprehensive drought conditions better in the ench city,playing a significant role in guiding the work of drought control.

关 键 词：区域干旱 模糊综合评价 信息扩散 

分 类 号：P426.616[天文地球—大气科学及气象学]