Abstract
This paper theoretically constructs the logical framework of urban agglomeration affecting urban land green use efficiency (ULGUE) and employs the super efficiency SBM model with undesired outputs to measure ULGUE based on the research object from 107 prefecture-level cities and above in the Yangtze River Economic Zone. Then, this paper uses the difference-in-differences method to test the impact of urban agglomeration on the ULGUE. The results show that: (1) urban agglomeration has a positive regulatory effect on the ULGUE, and this research conclusion is robust; (2) the promotion effect of urban agglomeration on the ULGUE has regional differences, showing the basic pattern of ordinary prefecture-level cities > regional central cities > provincial capital cities and medium cities > big cities > super large and megacities; (3) small and medium-sized cities should be encouraged to further agglomerate while moderately controlling the excessive agglomeration of super-large cities and megacities. Moreover, it is suggested to improve the level of regional agglomeration from the aspects of flexible use of market mechanisms and policy tools, innovative technology applications to achieve the effective integration of urban agglomeration, and ULGUE promotion.
Highlights
In recent years, China has successively proposed major strategies, such as new-type urbanization and regional coordinated development, aiming to promote high-quality urban development
Under the existing administrative division management system and fiscal decentralization system, whether it is based on the protection of local industries or the consideration of self-interest maximization in political contests [2], compared with the new-type development model of promoting regional agglomeration to achieve rapid economic development and efficient land use, local governments are more enthusiastic about the “traditional segmentation” development model centered on the jurisdiction [3]
slack-based model (SBM) model based on undesired outputs to measure the urban land green use efficiency (ULGUE) level of cities in the Yangtze River Economic Zone
Summary
China has successively proposed major strategies, such as new-type urbanization and regional coordinated development, aiming to promote high-quality urban development. Under the existing administrative division management system and fiscal decentralization system, whether it is based on the protection of local industries or the consideration of self-interest maximization in political contests [2], compared with the new-type development model of promoting regional agglomeration to achieve rapid economic development and efficient land use, local governments are more enthusiastic about the “traditional segmentation” development model centered on the jurisdiction [3]. Under this macro background, the impact of urban agglomeration on the efficiency and Sustainability 2021, 13, 10527. This paper further examines the moderating effect of different levels and scales of cities on the promotion of ULGUE under the background of urban agglomeration development, to provide theoretical and empirical support for exploring the differentiated promotion path of regional ULGUE (Figure 1)
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