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<p>The carbon emission trading policy (<i>CETP</i>) effectively addresses the negative externalities associated with industrial enterprises. However, its spatial spillover effects and mediation paths affecting green innovation efficiency (<i>GIE</i>) of these enterprises have not been explored. Utilizing data from above-scale industrial enterprises across Chinese provinces from 2009 to 2022, we measure their <i>GIE</i> using the Slack-based Measure (<i>SBM</i>) model and investigate the impact of <i>CETP</i> on <i>GIE</i> through difference-in-differences (<i>DID</i>), spatial <i>DID</i>, and mediation effect models. Our findings indicate that <i>CETP</i> enhances <i>GIE</i> of industrial enterprises, exhibiting a direct effect of 0.049% and a spatial spillover effect of 0.069%. Its spatial spillover effect significantly surpasses the direct effect. Our study further reveals that research and development (<i>R&amp;D</i>) investment and high energy consumption structures serve as mediation paths through which <i>CETP</i> influences <i>GIE</i> of industrial enterprises. This research underscores the importance of strengthening policy demonstration and regional diffusion, enabling more regions to benefit from <i>CETP</i>, thereby providing a clear direction for policy implementation.</p>

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Spatial spillover effect and mediation paths of carbon emission trading policy on green innovation efficiency of industrial enterprises

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • Lixin Qiu,
  • Yanan Zhao,
  • Beibei Yuan,
  • Yinuo Wang,
  • Lingjie Meng

摘要

The carbon emission trading policy (CETP) effectively addresses the negative externalities associated with industrial enterprises. However, its spatial spillover effects and mediation paths affecting green innovation efficiency (GIE) of these enterprises have not been explored. Utilizing data from above-scale industrial enterprises across Chinese provinces from 2009 to 2022, we measure their GIE using the Slack-based Measure (SBM) model and investigate the impact of CETP on GIE through difference-in-differences (DID), spatial DID, and mediation effect models. Our findings indicate that CETP enhances GIE of industrial enterprises, exhibiting a direct effect of 0.049% and a spatial spillover effect of 0.069%. Its spatial spillover effect significantly surpasses the direct effect. Our study further reveals that research and development (R&D) investment and high energy consumption structures serve as mediation paths through which CETP influences GIE of industrial enterprises. This research underscores the importance of strengthening policy demonstration and regional diffusion, enabling more regions to benefit from CETP, thereby providing a clear direction for policy implementation.