环境的外在性和保护策略

一个简单的环境污染模型发展后,环境污染具有外部性,在这个内生增长模型中,考虑了通过税收提供的资本来保护环境的两条途径。在政府不参与环境控制时,经济增长率最高,但污染也最严重,社会福利要比政府采取补贴情形时底。当环境外部性较少时,环境保护采取政府补贴社会福利要比完全由政府控制时的福利要大,而当外部性较大时,则环境保护应当采取完全由政府控制为妙。

The External Environment and Protection Strategies

After a simple model of development pollution,environmental pollution is externality.In the endogenous growth model,we consider two ways in which the provision of capital through taxation to protect the environment.When the government does not participate in environmental control,the rate of economic growth is highest,the pollution is worst and social welfare is worse than the time taken by the government to subsidize.When environmental externalities less,the environmental protection to government subsidies of social welfare is bigger than fully controlled by the government＇s welfare,and when it is larger,it is wonderful that the environmental protection should be fully controlled by the government.