中文摘要：

分析了声誉效应在PPP项目中的作用机理,并把声誉效应引入到PPP项目的激励体系之中,构建了显性激励与隐性激励相结合的最优动态激励契约模型。研究认为,声誉效应能够通过外部性效应和内部性效应对项目投资方产生影响,相比于纯粹的显性激励机制,引入声誉效应的隐性激励机制能够增加政府部门在PPP项目中的收益分享比例并且能够加强投资方的努力行为。

英文摘要：

Based on the reputation mechanism,this paper constructs the optimal dynamic incentive models by taking the explicit incentive and implicit incentive into consideration in PPP projects. Result shows that reputation mechanism has affects on privates through externality effect and internal effect. Compared to the explicit incentive,the reputation mechanism of implicit incentive increases the government＇s benefits and enhances private＇s behavior in PPP project.