Study on Ecological Economy Efficiency of Oasis Agriculture in Arid Region Based on LCA and DEA Method: Taking Seed Maize Production in Zhangye City as an Example
Oasis agriculture is the essence of arid agriculture in northwest China,facing the limitation of fragile key factors and fragile ecological environment.The high production efficiency of low input and high output is undoubtedly an important way to break the double restrictions.Therefore,it is necessary to evaluate the ecological economy efficiency,analysis of influencing factors.Based on the input and output survey of Zhangye Municipal Bureau of Statistics,this paper will supplement the special investigation to prepare the seed maize farmers as the research object.Firstly,the life cycle assessment method is used to quantitatively analyze the relevant environmental impacts in the seed maize production boundary.The main agricultural production constraint elements that water resources into which the yield of seed maize in Zhangye City,the results of the normalization of the results of the weighted average of 1.28E-07,then the value as the expected output into the second step of the efficiency evaluation system of SBM super-efficiency model,the average eco-efficiency is 0.871 2.Finally,OLS and Tobit were used to analyze the influencing factors,and some suggestions were put forward for the factors affecting the ecological efficiency.
arid area agricultureecological economy efficiencyseed maizeLCA methodDEA model
NETL
NSTL
万方数据
维普
