基于可变模糊集的区域节水灌溉发展水平评价研究

A Study on Regional Water Saving Irrigation Development Level Evaluation Based on Variable Fuzzy Sets

有效评价区域节水灌溉发展水平是制定区域节水灌溉规划的重要前提。针对现有区域节水灌溉发展水平评价方法不具有交互验证结果准确性的功能,结合熵权法和二元对比法进行主客观组合赋权,利用可变模糊集理论的矛盾性原理相互验证评价结果,用模糊数描述不确定信息,建立基于可变模糊集的区域节水灌溉发展水平评价模型。最后,结合陕西省节水灌溉水平进行算例分析,评价陕西省及各市、区节水灌溉发展水平并进行排序。评价结果表明该方法具有客观合理性和有效性,据此提出提升陕西省高效节水灌溉水平的政策建议。

The effective evaluation of the regional water saving irrigation development level is an important precondition for making the regional water-saving irrigation program. Aiming at the problem that the existing evaluation methods has not the function of interactively verifying the accuracy of the results,this paper uses the entropy weight method and the binary correlation method to conduct the subjective-objective-combined empowerment,applies the theory of contradiction principle of variable fuzzy sets（ VFS） to prove evaluation results,and used the fuzzy number to describe uncertain information. Then the evaluation model based on VFS is established. Finally,the water saving irrigation development level in Shaanxi Province is taken as an analysis example. The water saving irrigation development level of all the cities and districts is evaluated and sorted. The evaluation results show that the method is rational and effective. Then the policy suggestions are proposed to improve the efficiency of water saving irrigation in Shaanxi province.