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Urban Agglomeration Technology Innovation Networks, Spatial Spillover, and Agricultural Ecological Efficiency: Evidence from the Urban Agglomeration in the Middle Reaches of the Yangtze River in China

Author

Listed:
  • Weihui Peng

    (School of Economics, Guizhou University of Finance and Economics, Guiyang 550025, China)

  • Zehuan Hu

    (School of Economics, Guizhou University of Finance and Economics, Guiyang 550025, China)

  • Jie Li

    (School of Economics, Guizhou University of Finance and Economics, Guiyang 550025, China)

  • Chenggang Li

    (School of Applied Economics, Guizhou University of Finance and Economics, Guiyang 550025, China)

Abstract

Urban agglomerations serve as essential platforms for regional innovation, while agricultural technology innovation and diffusion play pivotal roles in enhancing agricultural eco-efficiency (AEE). Based on panel data from the Urban Agglomeration in the Middle Reaches of the Yangtze River (UAMRYR) (2001–2023), this study employs a super-efficiency slacks-based measure model incorporating undesirable outputs to evaluate agricultural eco-efficiency. A modified gravity model is utilized to construct agricultural technology innovation networks (ATINs) in urban agglomerations, and a spatial Durbin model is applied to examine the spillover effects of network structure on eco-efficiency. The results indicate that: (1) Higher-degree centrality within the innovation network significantly improves local agricultural eco-efficiency and produces positive spillover effects on neighboring cities; (2) both direct and spillover effects are significant in central cities, whereas sub-central cities exhibit only a significant direct effect, and peripheral cities display an insignificant direct effect but a significant spillover effect; and (3) enhanced urban informatization, agricultural financial development, and industrial scale substantially strengthen the spatial spillover effects of the innovation network, thereby further advancing agricultural eco-efficiency within the agglomeration. These findings offer theoretical and empirical support for optimizing agricultural technology pathways and enhancing eco-efficiency in urban agglomerations.

Suggested Citation

  • Weihui Peng & Zehuan Hu & Jie Li & Chenggang Li, 2025. "Urban Agglomeration Technology Innovation Networks, Spatial Spillover, and Agricultural Ecological Efficiency: Evidence from the Urban Agglomeration in the Middle Reaches of the Yangtze River in China," Sustainability, MDPI, vol. 17(11), pages 1-27, June.
  • Handle: RePEc:gam:jsusta:v:17:y:2025:i:11:p:5109-:d:1670490
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