基于信息熵大型灌区农业旱情的TOPSIS综合评价  

Application of TOPSIS Method Based on Coefficient of Entropy to Comprehensive Evaluation of Agricultural Drought in Irrigation Areas

作　　者：方崇[1] 苏超[1] 黄伟军[1] 

机构地区：[1]广西水利电力职业技术学院,南宁530023

出　　处：《中国农村水利水电》2011年第5期74-76,79,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(50679047);广西水利水电科技计划项目(桂水科200502);广西教育科研项目(200911MS319)

摘　　要：在分析国内外农业干旱评价研究现状的基础上,提出了农业旱情综合评价的TOPSIS评价方法。选择降雨、径流、水库蓄水和地下水等影响干旱的主要因素作为评价分析的特征指标,引入信息熵来计算各评价指标的权重,建立了基于熵权的TOPSIS综合评价模型,根据理想解的欧氏距离判别旱情等级。将该模型对关中地区旱情状况进行综合评价,评价结果与实际情况相符,为干旱地区灌区水资源开发利用以及制定抗旱预案、减少旱灾损失提供科学依据。On the basis of analyzing agricultural drought evaluation studies at home and abroad,a comprehensive evaluation of agricultural drought TOPSIS evaluation method is put forward.The main factors affecting droughts,such as rainfall,runoff,reservoir storage and groundwater are chosen as the characteristic index of evaluation and analysis.The information entropy to calculate the weight of evaluation index is introduced.TOPSIS comprehensive evaluation model is established based on entropy weight.Drought rating is distinguished according to the Euclidean distance of ideal solution.Applying the model to a comprehensive evaluation of the drought situation in the region,the results match the actual situation.It provides a scientific basis for the development and utilization of water resources in arid regions＇ irrigation areas,the development of drought contingency plans and the reduction of drought losses.

关 键 词：信息熵 灌区 农业旱情 TOPSIS模型 综合评价 

分 类 号：S162[农业科学—农业气象学] P133.1[农业科学—农业基础科学]