Research on Spatiotemporal Pattern and Correlation of the Yangtze River Delta Region Double Opening and Energy Eco-Efficiency
It has become an important proposition for the high-quality and sustainable development of the Yangtze River Delta region to form a higher level of international opening-up pattern and a more effective domestic opening-up pattern and to achieve resource conservation,green low-carbon and win-win economic development.Based on the panel data of 41 cities in the Yangtze River Delta region from 2011 to 2021,the spatial and temporal pattern and correlation between the double opening and energy eco-efficiency were explored.The results show that:First,on the whole,the international openness decreased first and then stabilized,the inter-regional openness showed M-type evolution,and the energy eco-efficiency showed a sequential evolution trend of"rising-stable".Second,energy eco-efficiency presents the pattern distribution characteristics of Shanghai>Jiangsu>Zhejiang>Anhui,which mainly shows the characteristics of step by step change,and has a significant spatial orientation.Third,there is a U-shaped relationship between international opening and energy eco-efficiency.Interregional opening has a significant positive promoting effect on energy eco-efficiency,and the dual opening has complementary and spillover effects.
Double Opening UpEnergy Ecological EfficiencySBM ModelSpatial Econometric Model