中国省域农业环境效率测算及收敛性分析--基于非期望产出的超效率EBM模型

Estimation and Convergence Analysis of China’s Provincial Agricultural Environment Efficiency--Super-efficiency EBM model based on undesired output

运用带有非期望产出的超效率EBM模型,基于1998-2016年31个省农业投入产出数据,并将利用单元调查评估方法核算的各省份农业面源污染结果作为非期望产出指标,测算了1998-2016年31个省农业环境效率,且对其收敛性进行检验.研究表明:农业环境效率平均值在不同时间段和不同地区间具有一定的差异;农业环境效率存在绝对β收敛,并且α收敛迹象明显,只是在某些年间出现轻微发散的现象.各级政府还应继续加大力度推进美丽乡村建设.

Using the super-efficiency EBM model with undesired outputs,based on the agricultural input and output data of 31 provinces from 1998 to 2016,and the agricultural non-point source pollution results of the provinces calculated by the unit survey evaluation method as undesired output indicators to measure the agricultural environmental efficiency of 31 provinces from 1998 to 2016 and test their convergence.The research shows that the average value of agricultural environmental efficiency has certain differences between different time periods and different regions;the agricultural environmental efficiency has absoluteβconvergence,and the signs ofαconvergence are also obvious,but there is a slight divergence in some years.Governments at all levels should continue to intensify efforts to promote the construction of beautiful villages.