地方政府公信力与PPP项目落地规模——基于财政部PPP项目库数据的研究

目的/意义PPP项目的顺利实施，需要政府和社会资本合作共赢，地方政府公信力对于PPP项目顺利实施有显著的促进作用，同时还需充分考虑公众参与的作用。设计/方法在三方主体（地方政府、社会资本、公众）有限理性的条件下，分析三者在不同策略组合下的成本和收益，构建了三方合作演化博弈模型，通过三方演化博弈分析，得到不同状态下各参与主体的稳定性策略。结论/发现上级政府部门对地方政府的惩罚系数存在突变点，在一定范围可对其行为有约束作用，使其更加注重公信力，信守承诺；提升公众参与度在一定条件下对社会资本有正向影响，可以遏制社会资本机会主义行为，并影响地方政府的策略选择；公众得到的奖励收益对三方合作有一定影响。

An empirical examination of public involvement in public-private partnerships: qualifying the benefits of public involvement in PPPs

[Purpose/Significance] The smooth implementation of PPP projects requires a win-win cooperation between the government and social capital. The credibility of local governments plays a significant role in promoting the smooth implementation of PPP projects. At the same time, the role of public participation must be fully considered. [Design/Methodology] In this paper, under the condition of the limited rationality of the three parties (local government, social capital and the public), the costs and benefits of the three parties under different strategic combinations are analyzed, and the tripartite cooperative evolutionary game model is constructed. Through the analysis of the tripartite evolutionary game, the stability strategies of each participant under different states are obtained. [Conclusions/Findings] The analysis results show that the punishment coefficient of the superior government department to the local government has a sudden point, which can restrain its behavior to a certain extent and make it pay more attention to public credibility and keep its promise. The promotion of public participation has a positive impact on social capital under certain conditions, which can curb the opportunistic behavior of social capital and influence the strategic choice of local governments. The reward income obtained by the public has a certain influence on the tripartite cooperation.