Research on the Impact of Factor Mobility in China’s Coastal Regions on the Economic Efficiency of Marine Fisheries

Investigating the impact of factor mobility (FM) on the economic efficiency of marine fisheries (EEMF) holds scientific reference value for promoting high-quality development of the marine fisheries economy in China's coastal regions. This study is based on panel data from 11 coastal provinces and municipalities in China covering the period from 2008 to 2023. Utilizing Tobit models and mediation effect models, it empirically analyzes the direct and indirect impacts of FM on the EEMF, as well as regional heterogeneity in these effects. Research findings indicate that: (1) The level of FM and the EEMF in coastal regions both exhibit fluctuating upward trends, though regional variations exist across different provinces. (2) The FM in coastal regions enhances the EEMF. For every additional unit of FM, the EEMF increases by 0.0825 units. (3) Technological innovation levels and industrial structure upgrading serve as key pathways through which FM influences the EEMF, acting as mediating variables. (4) This impact exhibits regional heterogeneity, with the Eastern Marine Economic Circle being most significantly affected. The research findings expand the scope of studies on FM and the EEMF, providing practical advice for promoting the optimal allocation of factors in coastal regions and enhancing the EEMF development.