中文摘要：

从共享资源自发合作治理（集体供给）中异质性影响机理两种截然“相反”的观点出发，引出对异质性“U型曲线”关系的讨论。依个体决策知识结构的不同，将个体间交往的知识状态划分为形成与未形成新的共同知识两类；并分别构建理论模型分析。结论表明：一般情况下，单维异质性与共享资源产出水平之间（基本）满足单调关系，“U型曲线”只是一种特例；两种“相反”观点的表象背后，是其各自分析目的以及研究对象所处决策场景或状态的差异。

英文摘要：

Arguing from the repugnance of statements about heterogeneity on the collective supply of common resources, the paper deals with the heterogeneous U - shaped relationship. According to the different individual decision knowledge structures, the knowledge state of individual intercourse is divided into two categories ： forming or not forming new common knowledge. Then, a theoretical model is constructed in different decision scenery. The research result shows that： in the base case, the relationship between single dimensional heterogeneity and output level does correspond primarily with monotone, while the U - shaped just a sort of special case ; the repugnance of statements are the multifarious results just for the simple reason that there are different analytical purposes and different subjects investigated.