Spatial—temproal Differentiation And Influencing Factors Of Ecological Efficiency Of China’s Marine Fisheries

Marine fishery is an important part of Marine economy and plays an important role in promoting the development of China’s national economy and ensuring global nutrition and food security.However,with the continuous expansion of China’s Marine fishery economy and the deepening of the Marine fishery development and utilization degree,the Marine fishery overfishing,severe water pollution,Marine fishery ecosystem deterioration of contradictions,Marine fishery environment carrying capacity,resources recycling capacity significantly reduced,transformation and upgrading of Marine fishery is imminent.At present,the contradiction between economic development and resources and environment is increasingly prominent,and how to coordinate the relationship between them has always been the focus of attention of all countries.The United Nations Environment Program points out that 80% of the world’s waste water is still discharged into the sea without treatment every year,and the current environmental problems are mainly reflected in the sea.Therefore,how to break through the traditional Marine fisheries development mode,explore the suitable Marine fisheries development speed and development model,implementing the green development of Marine fisheries,coastal provinces to improve ecological efficiency is particularly important,it is not only an important link to realize the sustainable development of Marine fishery,also helps for the development of Chinese Marine fishery transition strategy to provide important reference and basis.In this paper,by sorting out the existing research results of domestic and foreign scholars,guided by the four theories of sustainable development,ecological efficiency,ecological economy and circular economy,and based on the connotation of Marine fishery ecological efficiency,the superefficiency SBM model,standard deviation ellipse and generalized moment estimation model considering non-expected output are used.The spatio-temporal variation trend of Marine fishery ecological efficiency and its influencing factors in China’s coastal provinces from 2007 to 2016 were comprehensively discussed,and the corresponding countermeasures and suggestions were put forward.The main conclusions of this paper are as follows :(1)The ecological efficiency of Marine fisheries in China’s coastal provinces is fluctuating,but it is still at a low level,and there is still a large room for improvement.The provinces with higher Marine fishery ecological efficiency were Jiangsu,Guangdong and Shandong,with average ecological efficiency of 1.337,1.318 and 1.098,respectively.Zhejiang province had medium ecological efficiency,with an average value of 0.901.Liaoning and Fujian had low eco—efficiency,with average eco—efficiency of 0.661 and 0.650.Hebei,Guangxi Zhuang Autonomous Region and Hainan were found to be ineffective,with the mean eco—efficiency of 0.332,0.434 and 0.283,respectively.(2)From 2007 to 2016,the spatial distribution center of Marine fishery ecological efficiency in coastal provinces shifted to the southeast,and the migration path was "moving to the northwest from 2006 to 2010" and "moving to the southeast from2010 to 2016".The standard deviation of the long axis of the standard deviation ellipse is always greater than that of the short axis.The ecological efficiency of Marine fishery is expanding in the south—north direction and contracting in the east—west direction.(3)Based on the GMM model,the analysis results of influencing factors of Marine fishery ecological efficiency in coastal provinces show that the industrial structure,environmental regulation and scientific and technological support of Marine fishery have a positive effect on the improvement of Marine fishery ecological efficiency,and all of them have passed the significance test of 1%;The degree of opening to the outside world has a negative effect on the improvement of Marine fishery ecological efficiency,which has passed the significance test of 5%.Therefore,when making Marine fishery development policy,it is necessary to consider various ways and seek reasonable development path according to the characteristics of resources and economic development stage of each province.