Analysis of green development efficiency and its influence factors of marine fish culture industry in China

marine fish culture industry%green development efficiency%efficiency evaluation%influence factors%undesirable outputs

Marine fish culture industry in China,as the pillar industry of aquaculture,has contributed to the optimization of China's aquaculture.However,the development of this industry is limited by a wide range of environmental concerns,resulting from the ecological impacts of aquaculture inputs and resources.In order to achieve sustainable social-economic-environmental development under the Greater Food Approach,marine fish culture industry is promoting green development and industrial transformation and upgrading.Green development efficiency(GDE)is an important criterion for measuring the level of green development.It considers not only economic development efficiency but also environmental costs.Therefore,this study focused on the key scientific issue of the key factors affecting the GDE of marine fish culture industry.This paper established an evaluation index system and used the super-slack-based measure model(Super-SBM)to evaluate the GDE of marine fish culture industry.Tobit model was constructed to analyze the factors affecting the GDE of marine fish culture industry.The results showed that the GDE of marine fish culture industry was in an inefficient state with the GDE of 0.8868,0.9687,0.7344 from 2017 to 2019.Trachinotus ovatus and Rachycentron canadum were the two culture species in an efficient state from 2017 to 2019,Larimichthys crocea was in an efficient state in 2018,and Scophthalmus maximus was in an efficient state in 2019.Other marine fish culture species were in an inefficient state from 2017 to 2019.With the Tobit model,the influence factors of the green technology level,the scale proportions of green modes and the market price had significant positive effects on the GDE,while the influence factor of the policy support had insignificant positive effects on the GDE.The results of this paper present suggestions to improve the GDE of marine fish culture industry in China and provide valuable insights for improving the GDE of marine fish culture industry.