The trend of new urbanization efficiency and eco-efficiency in each city of Fujian Province.

The trend of new urbanization efficiency and eco-efficiency in each city of Fujian Province.</p

Input-output index system of new urbanization efficiency and eco-efficiency.

Input-output index system of new urbanization efficiency and eco-efficiency.</p

Model estimation results.

(1) BackgroundThis study explores the coupling and coordinated development of new urbanization and eco-efficiency and their interaction mechanisms from the perspective of efficiency, and it has significant implications for promoting high-quality development and surpassing in China’s regional development.(2) ObjectiveThe study aims to investigate the spatiotemporal distribution pattern of new urbanization efficiency and eco-efficiency and its coupling and coordinated development relationship.(3) MethodsUsing panel data from 2010 to 2020 for nine cities in Fujian Province, this study employs the undesired super-efficiency SBM model to measure the efficiency of new urbanization and eco-efficiency. Additionally, a spatial panel Durbin model is constructed to analyze the interaction effect between the two efficiencies.(4) ResultsDuring the study period, both new urbanization efficiency and eco-efficiency in Fujian Province showed a fluctuating upward trend, with higher efficiency in the southeast than the northwest, exhibiting significant spatial agglomeration effects. Despite high double efficiency coupling, coordinated development was low, evolving from near-disorder to barely coordinated. The high coupling and coordination areas were mainly concentrated in the southeast, with gaps between different regions gradually narrowing. There was positive interaction between dual efficiency in the same region, with new urbanization efficiency showing a positive spatial spillover effect on eco-efficiency. Conversely, the spatial spillover effect of eco-efficiency on new urbanization efficiency was not significant.</div

Eco-efficiency value of each city in Fujian Province from 2010 to 2020.

Eco-efficiency value of each city in Fujian Province from 2010 to 2020.</p

Overall trend of new urbanization efficiency and eco-efficiency in Fujian Province.

Note: σ-U: Convergence coefficient of new urbanization efficiency; σ-E: Convergence coefficient of eco-efficiency; UE: New urbanization efficiency; EE: Eco-efficiency. Same as below.</p

Coupling coordinated development of new urbanization efficiency and eco-efficiency in Fujian Province from 2010 to 2020.

Coupling coordinated development of new urbanization efficiency and eco-efficiency in Fujian Province from 2010 to 2020.</p

The global Moran’s I index of new urbanization efficiency and eco-efficiency in Fujian Province.

The global Moran’s I index of new urbanization efficiency and eco-efficiency in Fujian Province.</p

Coupling coordination condition of new urbanization efficiency and eco-efficiency in Fujian Province from 2010 to 2020.

Coupling coordination condition of new urbanization efficiency and eco-efficiency in Fujian Province from 2010 to 2020.</p

S1 Data -

(1) BackgroundThis study explores the coupling and coordinated development of new urbanization and eco-efficiency and their interaction mechanisms from the perspective of efficiency, and it has significant implications for promoting high-quality development and surpassing in China’s regional development.(2) ObjectiveThe study aims to investigate the spatiotemporal distribution pattern of new urbanization efficiency and eco-efficiency and its coupling and coordinated development relationship.(3) MethodsUsing panel data from 2010 to 2020 for nine cities in Fujian Province, this study employs the undesired super-efficiency SBM model to measure the efficiency of new urbanization and eco-efficiency. Additionally, a spatial panel Durbin model is constructed to analyze the interaction effect between the two efficiencies.(4) ResultsDuring the study period, both new urbanization efficiency and eco-efficiency in Fujian Province showed a fluctuating upward trend, with higher efficiency in the southeast than the northwest, exhibiting significant spatial agglomeration effects. Despite high double efficiency coupling, coordinated development was low, evolving from near-disorder to barely coordinated. The high coupling and coordination areas were mainly concentrated in the southeast, with gaps between different regions gradually narrowing. There was positive interaction between dual efficiency in the same region, with new urbanization efficiency showing a positive spatial spillover effect on eco-efficiency. Conversely, the spatial spillover effect of eco-efficiency on new urbanization efficiency was not significant.</div

New urbanization efficiency value of each city in Fujian Province from 2010 to 2020.

New urbanization efficiency value of each city in Fujian Province from 2010 to 2020.</p