环保公共开支、资本化程度与经济增长

Environmental Public Expenditure,Capitalization and Economic Growth

本文主要从环境保护公共开支之资本化程度的角度,探讨环境保护与经济增长间的关系。在环境保护方面的公共开支欲对经济增长发挥积极作用并形成诸如环境库兹涅茨曲线的后半段曲线,其决定性条件便是环保公共开支在资本化上的程度如何。通过构建基于经济增长模型的理论框架,可以发现,当环保公共开支资本化程度高于其他部门(譬如私人投资部门)水平时,环保公共开支便会有利于经济的增长,从而验证了环境库兹涅茨曲线的有关结论,即在经过顶部后,经济与环境出现同步改善的情况。反之,当环保公共开支资本化程度低于其他部门的水平时,前者会对经济增长造成不利影响,出现挤出效应,拖累经济增长。此外,本文还进一步剖析了在预算约束条件下,环保公共开支有利于经济增长的资本化条件。

Previous research has proved that the public expenditure for the purpose of protecting environment would damage economic growth. This paper recognizes that it is environmental public expenditure which brings the Environmental Kuznets Curve （EKC）. Although the consumptive sector of the environmental public expenditure creates negative impact on economic growth, the productive sector of which could support the economy and improve efficiency positively. The economy could obtain its sustainahility if such productive sector is encouraged. Additionally this analysis proved the public environmental expenditure would benefit the economic development only of the ratio of public environmental expenditure of GDP is greater than its counterpart, which comes mainly from private sector. Finally this research also takes into account the factor of budget constrain, which would change the relationship between public environmental expenditure and economic growth.