An evaluation of marine economy sustainable development and the ramifications of digital technologies in China coastal regions

As a new engine of economic growth, marine economy has gradually attracted the high attention of countries around the world. At the same time, digital technology is becoming a crucial propeller to empower almost all perspectives of economic sustainable development. This research delineates the exploration of the distinctive regional attributes pertinent to the sustainable development of the marine economy and its interrelation with digital technology in China. Utilizing data spanning from 2013 to 2021 across China's eleven coastal areas, this paper adopts the entropy method to develop comprehensive index systems of both marine economy sustainable development and digital technology to evaluate regional their spatiotemporal characteristics, interrelations, and potential mechanisms based on the panel fixed effects model and Dagum Gini coefficient. The results show that both the level of digital technology and green development in marine economy exhibit a steady upward trend with significant regional differences and hierarchical phenomenon. Notably, regional development disparities within the tripartite major marine economic zones are discernible, with intra- and inter-regional variances being markedly pronounced. Further analysis affirm a substantial linkage between digital technology and the sustainable development of the marine economy, positing technological innovation as a plausible conduit. Our findings advocate for the augmentation of digital technology application through technological innovation, as a strategy to foster the sustainable development of the marine economy while ensuring regional equilibrium.