作者机构：
[Bing Kuang; Bohan Yang] Faculty of Political Science, College of Public Administration, Central China Normal University, Wuhan 430079, China;Author to whom correspondence should be addressed.;[Lu Zhang] Faculty of Political Science, College of Public Administration, Central China Normal University, Wuhan 430079, China<&wdkj&>Author to whom correspondence should be addressed.
通讯机构：
[Lu Zhang] F;Faculty of Political Science, College of Public Administration, Central China Normal University, Wuhan 430079, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
With the rapid development of urbanization and social economy, the utilization and protection of land have become one of the great social problems globally [...]
期刊：
International Journal of Environmental Research and Public Health,2023年20(3):2704- ISSN：1661-7827
通讯作者：
Chongming Li
作者机构：
[Tiantian Yang; Xiang Luo; Guodong Lin; Shuchen Niu] College of Public Administration, Central China Normal University, Wuhan 430079, China;Author to whom correspondence should be addressed.;[Chongming Li] College of Public Administration, Central China Normal University, Wuhan 430079, China<&wdkj&>Author to whom correspondence should be addressed.
通讯机构：
[Chongming Li] C;College of Public Administration, Central China Normal University, Wuhan 430079, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
low-carbon pilot policy;ULGUE;SFA;multi-period difference-in-differences model;SDM-DID
摘要：
Improving urban land green use efficiency (ULGUE) is an effective way to increase social, economic, and ecological benefits and achieve regional sustainable development goals. This study takes three batches of low-carbon pilot cities construction as a quasi-natural experiment and investigates the impact of low-carbon pilot construction on ULGUE through the multi-period difference-in-differences method and spatial Dubin difference model (SDM-DID). The results show that (1) from 2006 to 2019, ULGUE in China increased. From the aspect of space, ULGUE in China gradually decreased from west to east, showing an obviously high agglomeration phenomenon in Beijing–Tianjin–Hebei and the Pearl River Delta; (2) after the robustness test, parallel trend test, and endogenous test, it is found that the conclusion that the low-carbon pilot construction can effectively improve ULGUE is still relevant and can indirectly improve ULGUE in the local region through fund allocation, talent gathering, and industrialization; and (3) the national ULGUE has significant positive spatial correlation. The results of the SDM-DID model confirm that the low-carbon pilot policy can produce the significant spatial spillover and drive the common advance of ULGUE in neighboring regions. Therefore, the resources and environmental conditions in each city are supposed to be taken into full consideration theoretically. Furthermore, it is necessary to effectively promote the development of ULGUE by strengthening the linkage of green production factors between different cities, so as to make meaningful contributions to promoting China’s overall green development.
关键词：
City size;Regional economic integration;Spatial econometric analysis;Inverted U-shaped effect;Growth potential
摘要：
The continuous expansion of cities has led to prominent threats of urban housing shortage, inefficient land use, and environmental degradation. Determining an appropriate city size to promote REI is a fundamental problem in China's new-type urbanization period. This study investigated the impact of city size on REI from the spatio-temporal perspective, and performed an empirical investigation of such effects through spatial models, using panel data for 2004-2019 for 108 cities in the Yangtze River Economic Belt (YREB). The results demonstrate that city size has an inverted U-shaped effect on REI, and the effects vary across urban agglomerations in the YREB. Moreover, we calculated their growth potential from the REI perspective based on 2019 data. This study examined 108 cities and found that 30 of them had exceeded their optimal size for efficiency during the REI process, highlighting the need for spatial territorial governance, management, and planning. Of the remaining cities, 68 were near their REI efficiency-maximizing size, with no more than 20% growth potential. Only 6 cities had the potential to expand between 20% and 50%, while 4 cities had the capacity to grow by more than 50%. Therefore, governments must develop tailored land use and urban management policies for each city to enhance their REI.
