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With the development of productivity and promotion of industrialization, China’s environmental problem has become increasingly severe. In the city, urbanization, population growth and concentration, introduction and expansion of industrial all give pressure to the lake environment. Currently, water pollution of urban lakes has been very serious, which causes concerns of the community; the Government has made great effort to find a solution, but the effect is unsatisfactory.The study focuses on water pollution of urban lakes, analyzes the case of Wuhan city on economic perspective. This paper discusses the properties of public goods and external effects in urban lakes, compared forces and interactions of interrelated economic entities. It also analyzes the pollution of Wuhan lakes and classic cases of water pollution on urban lakes. Finally, it gives the city lake pollution countermeasures from an economic point of view. The main contents are as follows: Introduction, explains the background and significance of topics, presents the main ideas, the content, the research scope and perspective of the definition and description.Chapter1 Literature review, summarize theories of public goods, external pollution and the research on water pollution control, reviews environmental protection experts and scholars’research on the inadequate supply of public goods, the externalities of market failure, public goods supply mechanism and solution of pollution problems.Chapter 2 Analysis in case of Wuhan lakes, Contamination of lakes in Wuhan and governance issues to the city of Wuhan as an example of the source of lake pollution and the relevant economic decision-making body separate the "prisoner’s dilemma", and concluded the existing government-led pollution problems, the Government explore the constraints and incentives for improvement.Chapter3 The root causes of pollution in urban lakes and the law, from the urban lake properties and the behavior of the two aspects of the external effects of pollution in lakes and economic reasons, and lakes, the relationship between pollution and economic development, and pollution and control of costs and benefits were discussed.Chapter4 Experience in domestic and international lakes,lake pollution analysis and control of the classic cases, compare the lake pollution control strategy and governance of the institutional environment can be summarized as pollution of lakes in Wuhan learn from experience.Chapter5 Suggestions on urban lake pollution, in the main lake properties and behavior patterns related to the economic analysis, the classic case of experience from home and abroad, and in the light pollution of lakes in Wuhan problems, try to give the city of lakes pollution control countermeasures.Through research, the main conclusions of the paper are: the quasi-public goods Lake City properties and the behavior of the external effects of contamination determines the trend of the lake; pollution will worsen to a certain extent, economic agents due to spontaneous changes in behavior patterns The improved; but the spontaneous realization of this transformation follow the "pollution first, treatment later " path, which in terms of cost is not the economy; sensible strategy is to in pollution in the early stages of behavior of economic agents to intervene Effective intervention requires comprehensive use of legal, tax, administrative, and other traditional means of property rights, and actively try to public participation and other innovative means of resource securities.In this study, from an economic perspective, the problem of pollution in urban lakes were deep-level thinking, analysis of the existing system environment, the people of the profit motive and behavior patterns of a fundamental shift from the trend of pollution in the policy space. The implementation of pollution control measures also depends on the environment, health, legal and other professional research and technical support.
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