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Synergistic effects of manufacturing spatial agglomeration and carbon emission efficiency in urban hierarchies: Evidence from the Yangtze River Delta, China

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  • Liu, Chonggang
  • Sun, Wei
  • Wu, Jiawei

Abstract

Manufacturing is a significant source of global carbon emissions, and changes in its spatial location lead to the redistribution and spillover effects of carbon emissions across various geographical regions. In this study, the Yangtze River Delta (YRD) in China is used as a case study, and a super-stochastic block model (super-SBM), deviation share analysis, and spatial Durbin model are integrated to examine the spatial heterogeneity of the impact of manufacturing spatial agglomeration on carbon emission efficiency (CEE). The results show that manufacturing exhibits a systematic diffusion path from the core to the periphery, which is significantly spatially coupled with the ‘high core, low periphery’ spatial pattern of CEE. An analysis of the impact mechanism reveals that the effect of manufacturing relocation on CEE has distinct phased and spatially heterogeneous characteristics. Before 2019, industrial relocation promoted efficiency improvement in core cities and inhibited efficiency improvement in peripheral cities; however, after 2019, with the continued diffusion of industries in core cities and the enhanced technological absorptive capacity of peripheral regions, this relationship shifted. Technological innovation and environmental regulation can effectively moderate this process to help alleviate the ‘high-carbon lock-in’ risk faced by peripheral regions during industrial relocation. The innovation of this study lies in its construction of a theoretical analysis framework that reveals the differentiated impact of manufacturing relocation on the CEE of cities at different levels. This can provide a foundation for the formulation of coordinated policies on industrial transfer and carbon emission reduction between regions.

Suggested Citation

  • Liu, Chonggang & Sun, Wei & Wu, Jiawei, 2026. "Synergistic effects of manufacturing spatial agglomeration and carbon emission efficiency in urban hierarchies: Evidence from the Yangtze River Delta, China," Energy, Elsevier, vol. 359(C).
    • Handle: RePEc:eee:energy:v:359:y:2026:i:c:s0360544226012351
    DOI: 10.1016/j.energy.2026.141130
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