区域一体化与城市群绿色发展——基于长三角扩容的准自然实验

摘要基于1997—2018年中国212个地级市数据,将长三角城市群扩容作为区域一体化的自然实验,通过双重差分法(DID)实证检验区域一体化对绿色发展的影响。结果表明:(1)长三角城市群扩容通过与周边新城市的融合,显著提高了整体城市群的绿色发展水平,一系列稳健性检验证实了该结论的可靠性。(2)机制分析表明,长三角城市群扩容将原本相互独立的城市整合为一个城市群经济体,通过加强城市之间的经济联系、促进产业结构升级、提升技术创新水平三条渠道共同促进城市群绿色发展。(3)在经济发展水平更高、技术创新水平更高、第二产业比重更高的城市,区域一体化对绿色发展的促进作用更大。因此,中国在推进区域一体化的过程中,要加强区域间生态环境治理领域的协同与合作,共同实现绿色发展。

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	李格
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关键词：区域一体化长三角扩容绿色发展准自然实验

Abstract： Based on the data of 212 prefecture-level cities in China from 1997 to 2018, this paper takes the expansion of urban agglomeration in the Yangtze River Delta as a natural experiment of regional integration, and empirically tests the impact of regional integration on green development by difference in difference model (DID).The empirical results are as follows: (1) The expansion of urban agglomeration in the Yangtze River Delta has significantly improved the green development level of the overall urban agglomeration, and a series of robustness tests have confirmed the reliability of this conclusion; (2) Mechanism analysis shows that the expansion of the Yangtze River Delta urban agglomeration integrates the previously independent cities into an urban agglomeration economy, and promotes the green development of urban agglomeration by strengthening the economic ties between cities, promoting the upgrading of industrial structure and upgrading the level of technological innovation; (3) In addition, In cities with higher level of economic development, higher level of technological innovation and higher proportion of secondary industry, regional integration plays a greater role in promoting green development.Therefore, in the process of promoting regional integration, China should strengthen inter-regional coordination and cooperation in the field of ecological and environmental governance to jointly achieve green development.

Keywords： Regional Integration Expansion of the Yangtze River Delta Green Development Quasi-natural Experiment

收稿日期 2021-05-12; 接受日期 ;

基金资助:国家社会科学基金项目(20BJY012);国家自然科学基金青年项目(71703044)

作者简介: 李格(1995— ),女,河南驻马店人,博士,讲师,主要从事区域经济学、环境经济学研究;高达(1993— ),男,湖北武汉人,博士,副教授,主要从事环境经济学研究;吕世公(1988— ),男,湖北武汉人,博士研究生,主要从事数量经济学研究。高达为本文通信作者。

引用本文:

李格, 高达, 吕世公.区域一体化与城市群绿色发展——基于长三角扩容的准自然实验[J]. 经济经纬, 2022,4: 22-31

LI Ge, GAO Da, LYU Shigong.Regional Integration and Green Development of Urban Agglomerations: Quasi-natural Experiment Based on Yangtze River Delta Expansion[J] Economic Survey, 2022,V39(4): 22-31

链接本文:

http://www.jjjw.org.cn/CN/ 或 http://www.jjjw.org.cn/CN/Y2022/V39/I4/22

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