Study On Coastal Marine Debris Treatment In The Yangtze River Delta From The Perspective Of Polycentric Governance Theory

For a long time,the ocean has been regarded as an "infinite" trash can,to which a large amount of debris has been discharged.Nowadays,marine debris pollution has been recognized as one of the top ten environmental pollution problems threatening human security in the 21 st century.The coastal waters of the Yangtze River Delta are rich in natural and cultural resources,which is an important growth pole for the economic growth of the Yangtze River Delta.However,due to the long-term disorderly development and poor governance,the amount of coastal marine debris in the Yangtze River Delta is increasing day by day,and the pollution is becoming more and more serious,posing a huge threat to the healthy development of marine economy,marine ecological security and human security,and seriously restricts the sustainable economic and social development of coastal provinces and cities in the Yangtze River Delta.Therefore,it is urgent to manage the coastal marine debris in the Yangtze River Delta.Taking the multi center governance theory as the core,through the combination of qualitative and quantitative methods,this paper expounds the current pollution status,treatment status,existing problems and main causes of the coastal marine debris in the Yangtze River Delta,analyzes and summarizes the successful treatment experience of he coastal marine refuse at home and abroad,and finally puts forward the countermeasures and suggestions for the treatment of the coastal marine refuse in the Yangtze River Delta.This paper is mainly divided into the following seven parts:The first part is the introduction,which first explains the research background,purpose and significance of this paper,and then points out the deficiency,importance and necessity of the research by combing the research status at home and abroad.Finally,the purpose,methods and analytical framework of the study are described.The second part is the definition of related concepts and theoretical basis.In the concept definition part,the basic concepts of marine debris,coastal marine refuse in the Yangtze River Delta,marine debris management and citizen science are expounded.The theoretical basis part focuses on the connotation,characteristics,advantages,relationship and role orientation of the polycentric governance theory,and the guiding value of which to the coastal marine debris governance in the Yangtze River Delta is summarized finally.The third part mainly elaborated the pollution status and treatment status of coastal marine debris pollution in the Yangtze River Delta.Based on the national public monitoring data and monitoring data of non-governmental environmental protection NGO,this paper makes a statistical analysis on the stock,accumulation rate,types and beach cleanliness of coastal marine debris in the Yangtze River Delta region.It is found that the coastal marine debris in the Yangtze River Delta region is seriously polluted,the future situation is not optimistic,and plastic is the main pollutant.In terms of governance,it is mainly dominated by the government,with low participation of the market and social subjects.The fourth part analyzes the main problems and reasons existing in the process of coastal marine debris treatment in the Yangtze River Delta,mainly based on the current situation of coastal marine debris pollution and treatment in the Yangtze River Delta.It is found that the main problems existing in the current management of coastal marine debris in the Yangtze River Delta region are unclear treatment functions,poor management system and relatively lagging legislation.The main problems of the market are the single treatment means and the lack of self-discipline of enterprises.The main problems of social subjects are low public participation,the shortage of scientific research achievements and insufficient development of NGOs.The reasons for the above problems include unclear positioning of government role,fragmented institutional setting,strong color of legal administration,imperfect market mechanism,weak awareness of enterprise responsibility,insufficient public participation ability,lack of motivation for scientific research cooperation and poor living environment of NGOs.The fifth part is the experience at home and abroad.This part mainly summarizes the treatment experience of marine debris management in the Great Bay area of San Francisco in the United States,Seto Inland Sea in Japan,Xiamen Bay and Bohai Bay in China.It provides a reference for the future management of the coastal marine derbris in the Yangtze River Delta.The sixth part is the countermeasures and suggestions for the treatment of coastal marine debris in the Yangtze River Delta.Firstly,based on the basic framework of polycentric governance theory and the actual situation of coastal marine debris governance in the Yangtze River Delta,this paper constructs the regional polycentric governance operation mechanism of coastal marine debris governance in the Yangtze River Delta.Secondly,in the process of governance,the government should timely change its role in marine debris governance,clarify the governance functions,strengthen legal construction,monitoring and early warning,and broaden the channels of participation.Then,we should give full play to the role of the market in the treatment of coastal marine debris in the Yangtze River Delta,not only continuously enhance the sense of social responsibility of enterprises,but also continuously promote the marketization of marine debris treatment,and broaden the channels for the market to participate in the treatment.Finally,we should encourage and support the development of marine environmental protection NGOs in the Yangtze River Delta,and constantly improve the public’s awareness of environmental protection and enthusiasm to participate in governance as well as strengthen the think tank role of scientific research institutions in the governance of coastal marine debris in the Yangtze River Delta.The seventh part is the summary and prospect.This paper mainly summarizes the content of this study,and puts forward the shortcomings in the research and the direction of future research.