CAJ | 학술논문

城市蔓延的经济与社会影响是城市经济学的前沿研究主题之一。其中，关于城市蔓延对生产率作用的研究，学术界存在较大分歧，且相关研究多见于理论分析，基于大量城市样本特别是中国数据的实证研究很少。本文使用2000—2012年中国地级城市层面的面板数据，借助全球夜间灯光数据构造了专门的城市蔓延指数，并运用混合截面回归、面板随机效应回归和工具变量法进行了多角度的稳健性检验，最终证实：来自中国的证据明确地支持了城市蔓延不利于生产率提高的结论，其深层含义是当前我国城市内部还普遍存在空间集聚经济效应。此外，研究还发现了一个有趣的现象：随着城市化的推进，城市蔓延对生产率的负面影响似乎在逐渐减弱。
성시만연적경제여사회영향시성시경제학적전연연구주제지일。기중，관우성시만연대생산솔작용적연구，학술계존재교대분기，차상관연구다견우이론분석，기우대량성시양본특별시중국수거적실증연구흔소。본문사용2000—2012년중국지급성시층면적면판수거，차조전구야간등광수거구조료전문적성시만연지수，병운용혼합절면회귀、면판수궤효응회귀화공구변량법진행료다각도적은건성검험，최종증실：래자중국적증거명학지지지료성시만연불리우생산솔제고적결론，기심층함의시당전아국성시내부환보편존재공간집취경제효응。차외，연구환발현료일개유취적현상：수착성시화적추진，성시만연대생산솔적부면영향사호재축점감약。
The economic and social effects of urban sprawl are a frontier topic in urban economics. There is considerable divergence in academia as for the research of the role of urban sprawl in productivity; and most of relative research focuses on theoretical analysis and empirical study based on large numbers of cities, especially the data from China, is rare. This paper employs the panel data of prefecture-level cities in China from 9,000 to 2012, and constructs special urban sprawl index by global nighttime light data to make a multi-perspective robustness test by pooled cross-sectional regression, panel data RE re- gression and instrumental variables （IV）. Finally it confirms the conclusion that urban sprawl is not conducive to productivity growth through evidence from China. It provides the deep implication that there generally exists economic effect of spatial agglomeration inside urban cities. In addition, it also finds an interesting phenomenon that with the advancement of urbanization, the negative effect of urban sprawl on productivity seems to weaken constantly.