The Compilation of Ocean Economic Input-Output Tables of China from 2002-2020.

Ocean economic input-output tables serve as a fundamental data source for analyzing internal industrial linkages within the ocean economy and its connections to the land-based economy. However, existing ocean economic input-output studies in China predominantly consist of cross-sectional tables for specific years, lacking consistent long-term time series data. This constraint limits deeper inquiry into temporal structural change in the ocean economy. In response, we assemble a longitudinal set of China's ocean economic input-output tables covering 19 marine sectors and 42 land-based sectors. This was achieved using the stripping coefficient method and an improved generalized RAS approach, based on China's official input-output tables and ocean economy statistics from 2002 to 2020. This dataset demonstrates high reliability and validity based on multidimensional technical validation, which covers internal consistency, time-series smoothness, and external data comparisons. This dataset underpins advanced studies on China's marine economy supply chain resilience, structural dynamics, and land-sea interdependencies, and informs sustainability-oriented ocean development.