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Analysis of the Spatial-temporal Pattern of Eco-efficiency Based on SE DEA-ESDA in China

The eco-efficiency for different regions and periods in China was calculated based on Super Efficiency DEA,and using the global and local spatial autocorrelation(ESDA),the spatial autocorrelation and spatial heterogeneity of eco-efficiency was analyzed.The results are as followed:the eco-efficiency has a significant difference in eastern,central and western areas,with showing the highest eco-efficiency over eastern developed regions,and the lowest one over central and western less-developed regions;spatial autocorrelation analysis shows that Global Moran's I were positive spatial correlations among provincial regions in China,indicating that there were regions of similar eco-efficiency agglomerated in space,and the degrees of spatial agglomeration first decreased and then increased.For the urban competitiveness of spatial heterogeneity it can be found that the"hot spot"areas of eco-efficiency were relatively stable,in the eastern and west regions,while the "cold spot"areas were in the Yellow River regions and northeast regions;spatial disparity of eco-efficiency is closely related to factors such as economic development,industrial structure and energy utilization intensity.Based on the global and local spatial autocorrelation,the study of spatial heterogeneity of eco-efficiency in China provides references for the development of differential regional objectives of eco-efficiency increase and related regulation policies.