Regarding the policy of innovative develop-ment demonstration cities for marine economy as a quasi-natu-ral experiment,a difference-in-differences model is estab-lished to investigate the impact of innovative development policy on the marine economic resilience of coastal cities using panel data of 38 coastal prefecture level and above cities in China from 2006 to 2022.The empirical analysis shows that the policy of in-novative development demonstration cities for marine economy has significantly improved the marine economic resilience of coastal cities.This conclusion still holds true after conducting a series of robustness tests such as parallel trend test,placebo test,truncated regression,PSM-DID test,and sample change.Heterogeneity analysis shows that the policy effects are more pro-nounced in the northern marine economic circle,large city group,and high human capital group.Mechanism analysis shows that investment in technological innovation and the devel-opment of the digital economy can strengthen the enhancing effect of the policy of innovative development demonstration cit-ies for marine economy on the marine economic resilience of coastal cities.Based on the above conclusions,countermeasures and suggestions are proposed to accelerate the formation of ma-rine new quality productive forces through innovative develop-ment and continuously consolidate the marine economic resili-ence of coastal cities.
NETL
NSTL
万方数据
