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<p>This study empirically tested the promoting effect of the three major ocean innovation policies from 2006 to 2020 on the high-quality development of 51 coastal cities in China. The results indicated that all three marine innovation policies could significantly promote the high-quality development of coastal cities, with a particularly pronounced effect on non-key environmental protection cities. Over time, the environmental impacts of the policies had shown divergent trends: specifically, the base pilot policy exhibited an inverted U-shaped pattern of first rising and then declining, while the negative environmental effects of the other two policies had gradually diminished. Mechanism analysis revealed that talent agglomeration and R&amp;D innovation served as the common supporting pillars for the effectiveness of these policies, and clean energy utilization and industrial structure optimization also played a universally reinforcing role. In addition, there were significant synergistic effects among the policies, along with positive spatial spillover effects–they not only drove local development but also radiated outward to boost the development of surrounding cities. In summary, marine innovation policies effectively empower the high-quality development of coastal areas through multiple pathways and interactive effects, and their formulation should focus on precise matching, dynamic assessment, and regional coordination.</p>

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Research on the promoting effect of marine innovation policies on the high quality development of coastal cities

  • 期刊论文

  • 发表日期：

    2026年5月9日

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  • Sheng Gao,
  • Xingyi Xing,
  • Xiaoyu Tang

摘要

This study empirically tested the promoting effect of the three major ocean innovation policies from 2006 to 2020 on the high-quality development of 51 coastal cities in China. The results indicated that all three marine innovation policies could significantly promote the high-quality development of coastal cities, with a particularly pronounced effect on non-key environmental protection cities. Over time, the environmental impacts of the policies had shown divergent trends: specifically, the base pilot policy exhibited an inverted U-shaped pattern of first rising and then declining, while the negative environmental effects of the other two policies had gradually diminished. Mechanism analysis revealed that talent agglomeration and R&D innovation served as the common supporting pillars for the effectiveness of these policies, and clean energy utilization and industrial structure optimization also played a universally reinforcing role. In addition, there were significant synergistic effects among the policies, along with positive spatial spillover effects–they not only drove local development but also radiated outward to boost the development of surrounding cities. In summary, marine innovation policies effectively empower the high-quality development of coastal areas through multiple pathways and interactive effects, and their formulation should focus on precise matching, dynamic assessment, and regional coordination.