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How does population agglomeration influence China's energy eco-efficiency? Evidence from spatial econometric analysis
1School of Statistics and Mathematics, Zhejiang Gongshang University, Hangzhou, 310018, China. 18668061851@163.com.
Population agglomeration boosts urban energy eco-efficiency in China, benefiting surrounding regions. This finding aids sustainable urban development strategies by highlighting the positive impact of concentrated populations on energy efficiency.
Area of Science:
- Environmental Science
- Urban Planning
- Energy Economics
Background:
- Rapid urbanization in China creates an energy supply-demand imbalance, hindering green urban development.
- The precise effect of population agglomeration on urban energy eco-efficiency remains insufficiently understood.
- Existing research often overlooks the spatial dynamics and interactions inherent in urban population concentration.
Purpose of the Study:
- To quantitatively assess the impact of population agglomeration on urban energy eco-efficiency in China.
- To investigate the spatial spillover effects of population agglomeration on energy eco-efficiency.
- To explore the mediating role of technological innovation and heterogeneity in this relationship.
Main Methods:
- Utilized DMSP/OLS and NPP/VIIRS night lighting data alongside LandScan population data to define 'real urbanized areas' and 'real urbanized populations'.
- Constructed a dynamic spatial Durbin model using panel data from 260 Chinese cities (2006-2020) to analyze population agglomeration's effects.
- Incorporated spatial interaction effects of economic behavior and performed endogeneity and robustness tests.
Main Results:
- Population agglomeration positively influences regional energy eco-efficiency.
- Significant positive spillover effects of population agglomeration on energy eco-efficiency were observed in surrounding areas.
- Technological innovation was identified as a key positive mediator in the agglomeration-eco-efficiency relationship.
Conclusions:
- Population agglomeration is a significant driver for enhancing urban energy eco-efficiency in China.
- The positive effects of population agglomeration extend beyond city borders, influencing neighboring regions.
- Policy interventions should consider population dynamics and technological advancement to promote sustainable urban energy management.
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