Carbon emission reduction is a crucial link of the low-carbon transformation of fishery, and clarifying the marginal carbon emission cost of fishery is the most important part. Based on this view, the paper estimates the marginal carbon emission cost of fishery in 28 provinces of China from 2003 to 2019 using the fishery carbon shadow price model, and further explores their evolution trend and influencing factors. The results show as follows. On the whole, the marginal emission cost of fishery fluctuates and rises, with most provinces continuously increasing and a few provinces no significant changing or slight declining. There are significant differences in marginal costs between regions, and the coastal is much higher than the inland. In terms of dynamic evolution, the kernel density curve shows a downward trend and a rightward shift, with the carbon emission reduction cost evolving to the high value area and the emission reduction space gradually shrinking, the regional difference characteristics are enhanced, and the distortion of resource allocation is aggravated. From the influencing factors, the impacts of industrial structure, energy intensity, fishery development level, fishery scale and specialization degree on the marginal carbon abatement cost are significantly negative, while the impacts of factor endowment and science and technology promotion are significantly positive. Accordingly, each province should clarify its regional advantages and characteristics, formulate differentiated emission reduction policies to reduce the marginal carbon emission cost of fishery, and make efforts from multiple levels such as technical support and industrial structure to promote the overall emission reduction and efficiency improvement of China 's fishery.
Key words
marginal cost /
fishery carbon emission reduction /
directional distance function /
Spatial Durbin Model
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