PROGRESS IN GEOGRAPHY ›› 2023, Vol. 42 ›› Issue (2): 237-248.doi: 10.18306/dlkxjz.2023.02.003

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Spillover effects of urban industries on haze pollution among cities of the Beijing-Tianjin-Hebei region:From the perspective of inter-city manufacturing investment network

SUN Tieshan1,2(), LIU Yuqi1   

  1. 1. School of Government, Peking University, Beijing 100871, China
    2. Institute of Public Governance, Peking University, Beijing 100871, China
  • Received:2022-06-17 Revised:2022-11-01 Online:2023-02-28 Published:2023-02-24
  • Supported by:
    National Natural Science Foundation of China(41971156);Key Academic Team Building Support Project of the Institute of Public Governance of Peking University(TDXM202104)

Abstract:

In urban agglomerations, the environmental impact of urban industries may spillover between cities not only through the pollution diffusion, but also through the inter-city linkages of industrial investment and transfer. The spillover effect of urban industries on air quality through the urban industrial investment network has been largely ignored in the literature. Due to the urban network externality, the air quality in a city is not only influenced by its own industrial activities, but also closely related to the industrial development of other cities connected through the industrial investment in the urban network. By applying the investment data of manufacturing enterprises among cities in the Beijing-Tianjin-Hebei region from 2004 to 2018, this study investigated the characteristics of the inter-city manufacturing investment network in the region. This study created inter-city manufacturing investment network matrices under a spatial econometric model to empirically test the spillover effect of urban industries on haze pollution via the inter-city manufacturing investment network in the Beijing-Tianjin-Hebei region. The findings suggest that the investment in polluting manufacturing has increased significantly under the mutual investment in manufacturing between cities in the region. Furthermore, compared with other types of manufacturing investment, the polluting manufacturing investment network among cities in the Beijing-Tianjin-Hebei region is more dispersed. Those extensive investment linkages in polluting manufacturing industries between cities in the region are important channels for the spillover effect of urban industries on haze pollution. From the perspective of spatiotemporal evolution, our results indicate that the gradual expansion of the network of polluting manufacturing investment between cities in the Beijing-Tianjin-Hebei region is more likely to generate extensive cross-city environmental impacts. Our empirical results confirm the spillover effect of urban industries on haze pollution via the inter-city manufacturing investment network. The transmission mechanism of this spillover effect is based on the investment linkages between cities and depends on the types of invested industries. Specifically, the polluting manufacturing investment linkages result in more significant and stronger spillover effects of urban industries on haze pollution through the urban network. Therefore, the coordinated development of urban industries among cities in the urban agglomeration is necessary for meeting the regional environmental and sustainability challenges.

Key words: urban network, haze pollution, spillover effects, investment linkages, Beijing-Tianjin-Hebei region