摘要
基于2006—2019年中国70个大中城市的面板数据,利用渐进双重差分方法估计了国家级新区的碳减排效应,并检验了其碳减排的作用机制及异质性。研究发现:1)国家级新区设立能降低所在城市碳排放量,并且在设立3年后会对所在城市的碳排放量产生显著的长期抑制作用;2)国家级新区政策主要通过技术效应和节能效应降低所在城市的碳排放;3)国家级新区设立对周边城市碳排放的影响呈现先增加、后降低、再增加的“∽”型变化趋势,其中,对周边200~250 km范围内的城市产生显著的降碳作用;4)国家级新区对北方城市的碳减排效应高于南方城市,单城布局模式具有明显的减排效应,而双城布局模式并未显著降低所在城市的碳排放量。
In response to global climate change,China has incorporated carbon peaking and carbon neutrality into its overall economic and social development.National-level new areas are critical strategic carriers for high-quality regional economic development in China,playing an essential role in promoting carbon reduction.Objectively evaluating the carbon-emission-reduction effect of national-level new areas can help accumulate and promote China's low-carbon construction experience,and thus,comprehensively facilitate greening and ecological civilization construction.In this study,the impact of the establishment of national-level new areas on carbon emissions in their respective cities were investigated using the difference-in-difference method.The findings show that:1)the establishment of a national-level new area can significantly minimize the carbon emissions in the city in which it is located,and after three years of establishment,it will have a significant long-term inhibitory effect on the carbon emissions of the city.This conclusion is still valid after a series of robustness tests,such as propensity score matching+difference-in-difference;2)The national-level new area policy mainly reduces carbon emissions in a city through technological and energy-saving effects but cannot yet reduce them by adjusting the industrial structure.3)The impact of the establishment of national-level new areas on the carbon emissions of surrounding cities shows an"∽"trend of increasing first,then decreasing,and subsequently increasing.It has a significant carbon-reduction effect on cities within the range of 200-250 km,indicating that national-level new areas can help promote carbon-emission reduction in surrounding cities.4)The national-level new area policy has a higher carbon-emission-reduction effect on northern cities than on southern cities.The single-city layout model of the national-level new area has a significant carbon-emission-reduction effect on the host city,whereas the dual-city layout model does not significantly reduce the carbon emissions in the host city.This study investigated the carbon-emission-reduction effect of national-level new area policies and examined carbon-emission reduction in the national-level new areas of pilot cities through technological and energy-saving effects.This study helps to improve the theoretical understanding of national-level new area policies and carbon-emission impact mechanisms and provides a policy reference for China's promotion of the"dual-carbon"strategy.
作者
刘成昆
彭庭莹
曾冰
曾钰
Liu Chengkun;Peng Tingying;Zeng Bing;Zeng Yu(The Institute of Sustainable Development,Macao University of Science and Technology,Macao 999078,China;School of Economics,Anhui University of Finance and Economics,Bengbu 233030,China;School of Economics,Guizhou University of Finance and Economics,Guiyang 550025,China)
出处
《热带地理》
CSCD
北大核心
2023年第11期2049-2059,共11页
Tropical Geography
基金
国家自然科学基金项目“复杂网络结构下城市群经济合作研究”(72163010)
澳门科技大学研究基金项目“城市演化和可持续发展决策模拟研究”(FRG-22-094-INT)。
关键词
国家级新区
政策评估
准自然实验
碳排放
双重差分
national-level new area
policy assessment
quasi-natural experiment
carbon emission
difference-in-difference
