通过引入集体物品的初始存量和衰竭速率两个参数,建立跨期均衡模型,考察个体主观贴现率差异程度对集体行动合作产出的影响,讨论参数条件发生变化时的贴现率异质性效应.结论表明:个体对未来收益(损失)越重视(即主观贴现率越大),集体物品的合作生产越容易维系;且初始存量和衰竭速率构成了集体物品自发供给的必要条件. By introducing two parameters of the initial inventory and the failure rate of collective goods, this paper establishes an intertemporal equilibrium model, examines the impact of the degree of individual subjective discount rate on the cooperative output of collective action and discusses the discount rate heterogeneity effect when the parameter conditions change. The conclusion shows that the more individuals value the future loss (loss), the co-production of collective goods is more likely to be maintained. The initial stocks and the rate of failure constitute the necessary conditions for the voluntary supply of collective goods.