Comprehensive Benefit Analysis Of Granary Project Based On Data Envelopment Analysis And Fuzzy Comprehensive Evaluation

China is a populous country and grain in China has always been regarded as war reserve.In order to ensure grain security,the production and storage must be taken seriously.In recent years,China's grain production continued to increase,and the billion pounds of grain storage facilities construction plan is in progress correspondingly.In the design,construction and operation of the granary,in addition to pay attention to the granary process,warehouse type,structure calculation and supporting facilities,the social and environmental benefits following by grain storage benefits cannot be ignored.The important task in the whole life cycle management of granary project is to improve the utilization efficiency of the input cost of the granary building operation.That is to say,the target is making full use of the resources and getting the best output of economic benefit,social benefit and environmental benefit.Based on the study about Data Envelopment Analysis(DEA),fuzzy comprehensive evaluation(FCE)and the theory of granary projects evaluation,this paper mainly completes the following works.(1)The comprehensive benefit evaluation index system is established,which is divided into economic benefit index and non-economic benefit index.And the comprehensive benefit evaluation model of granary project is established.(2)The paper analyzes the economic benefits of the horizontal warehouse,the squat silo and the underground granary.On one hand,the overall efficiency,scale efficiency and technical efficiency are calculated by the C2 R model and C2GS2 model of DEA in order to evaluate economic benefits of the three granaries.On the other hand,the paper carries on the quantitative analysis on the input and output index of the granary through the projection analysis of the C2 R model.Therefore,the following conclusions are drawn: For the non-effective granary(the horizontal warehouse and squat silo),in terms of investment,their utilization efficiency of the grain storage cost are lowest.In the aspect of output,the control of grain temperature needs to be improved.(3)This paper analyzes the non-economic benefits of the horizontal warehouse,squat silo and the underground granary by means of FCE and analytic hierarchy process(AHP).Based on this,the following conclusions are drawn.The weights order of each index to its non-economic benefit can be obtained.And,the reason why the non-economic benefits of the horizontal warehouse did not reach the evaluation grade "excellent" is that its capacity of land use and food security ability is poor.While,due to poor energy saving capacity and food security protection ability,the non-economic benefit of the squat silo is not the best in the evaluation level.(4)The results that the comprehensive benefit of the horizontal warehouse,squat silo and the underground granary reach the "good","good" and " excellent " respectively in the evaluation level are obtained through FCE on economic and non-economic benefits of granary project.All of the above points out the direction to improve the comprehensive benefit and provides scientific basis for the construction and management of the granary project.