基于改进的层次分析法和模糊综合评价法的灌区农业水权分配

Water Right Allocation in Irrigation District Based on Improved Analytic Hierarchy Process Method and Fuzzy Comprehensive Evaluation Method

为了提高灌区经济效益和进一步完善农业水权制度进行灌区农业水权分配。针对灌区内不同支渠基础条件和种植结构的差异,结合灌区工程条件、社会、经济及生态等方面的实际情况,提出一种在灌区现状约束条件下使经济效益达到最优的灌区各支渠间农业水权分配方法。采用改进的层次分析法和模糊综合评价法对和平灌区支渠间农业水权进行分配。在该方法中将层次划分为4类二级指标、12类三级指标和17类四级指标,用MATLAB进行数据处理。研究结果显示,1支渠、3支渠、5支渠、6支渠、7支渠、8支渠、9支渠、12支渠、15支渠、16支渠模型分配水量均大于按面积分配水量,变幅范围在-0.09%~-9.90%,2支渠、4支渠、10支渠、11支渠、13支渠、14支渠模型分配水量均小于按面积分配水量,变幅范围在0.97%~8.62%。灌区农业水权模型分配结果与现有按面积分配方式得到的水量结果有一定的偏差,范围在-9.90%~8.62%,模型分配的结果在经济效益上具有显著优势。提出的利用改进的层次分析法和模糊综合评价法分配灌区农业水权具有操作性强、合理性好和充分遵循研究灌区现状的特性。

In order to improve the economic benefits of irrigation district and further improve the agricultural water rights system,the study on the agricultural water rights allocation of the irrigation district was conducted.In view of the differences of foundation condition and planting structure of different branch canals in irrigation district,combined with the actual situation of engineering condition,society,economy and ecology in irrigation district,a method of agricultural water rights allocation among branch canals in the irrigation district was proposed to optimize economic benefits under the constraints of the current situation of the irrigation district.The improved analytic hierarchy process and fuzzy comprehensive evaluation methods were adopted to allocate agricultural water rights among branch canals in Heping irrigation district.In this study,the hierarchy was classifified according to 4 categories of second-grade indices,12 third-grade indices and17 fourth-grade indices,and the Matlab software was used for data processing.The results showed that the water rights allocation amounts of1,3,5,6,7,8,9,12,15 and 16 branch canals by the model were larger than the water rights allocation amounts by area,with a variation range of-0.09%to-9.90%.The water rights allocation amount of 2,4,10,11,13 and 14 branch canals by model were less than the water rights allocation amount by area,with a variation range of 0.97%to 8.62%.There was a certain deviation between the allocation results of agricultural water rights model in irrigated district and the existing water allocation results by area,ranging from-9.90%to 8.62%.The results of the model allocation had significant advantages in economic benefits.The improved analytic hierarchy process and fuzzy comprehensive evaluation method proposed in this paper has strong operability,good rationality and fully follows the characteristics of studying the current situation of irrigation districts.