集聚与创新——来自摩天大楼建设的证据

Agglomeration and Innovation——Evidence from Skyscraper Construction of China

本文评估了中国摩天大楼的建造对周围企业创新的影响。研究发现,摩天大楼的建设显著地增加了其周围1千米范围内企业的创新,但是这一效应只在大城市以及比较高的摩天大楼周围存在。这意味着小城市中摩天大楼的建设往往与城市自身的经济基础不匹配,从而可能会削弱摩天大楼所产生的正外部性。本文的机制分析则表明,摩天大楼建造所造成的周围人口密度的增加以及周围企业与所在城市内部企业之间的知识共享是摩天大楼建设影响企业创新的重要途径。

The impact of skyscraper construction in China on the innovation of surrounding firms is assessed and empirical results show that skyscrapers significantly promote the innovation of firms within 1 km of skyscrapers.This effect only exists among the skyscrapers in large cities and the relatively tall skyscrapers.This means that the construction of skyscrapers in small cities often does not match the economic base of the city itself,which may weaken the positive externalities generated by skyscrapers.The mechanism analysis of this paper shows that the increase in the surrounding population density caused by the construction of skyscrapers and the knowledge sharing between surrounding firms and the firms within the same city are the main channels through which skyscrapers influence innovation.