Analysis of Green Total Factor Productivity Measurement of China’s Marine Carbon Sink Fisheries Based on EBM-GML Model

Abstract

As a green, low-carbon and sustainable ecological fishery, marine carbon sink fisheries can significantly increase the total amount of carbon sequestered by marine carbon sinks while saving the social cost of fishery production and improving the quality and production efficiency of fishery products, which is of great significance in promoting high-quality economic development and achieving the goal of "dual carbon". Based on panel data of nine key coastal provinces in China, this paper constructs an input-output analysis framework, measures the green total factor productivity of China's marine carbon sink fisheries using the super-efficient EBM model and GML index, and explores its regional differences and convergence characteristics using the Theil index and convergence model. The results show that: 1) Green total factor productivity in marine carbon sink fisheries is growing at the national, regional and provincial levels, with growth mainly due to green technological progress, but there are differences in the level of growth. 2) There are large regional differences in the development of marine carbon sink fisheries in various regions, and intra-regional differences are the main source of the overall differences in the development of marine carbon sink fisheries. 3) There is absolute β-convergence and conditional β-convergence in China and the Bohai Rim, Yangtze River Delta and Pearl River Delta regions.