【摘要】 由于任何公共物品都具有供应的相联性和排他的不可能性两个特征,导致集团成员在公共物品的消费和供给上存在搭便车的动机,公共物品的供给是一个典型的集体行动困境问题。作为整个社会制度变迁的一部分,城市社会管理体制经历了从“单位制、街居制到社区制”的变革,不同历史时段的社区公共物品供给机制具有不同的特征。单位体制所形成的“政府—单位”公共物品供给体系,已经不能满足转型时期社区日益增长的多元需求。在单位制解体和单位功能弱化的背景下,城市基层社区将替代传统单位,成为城市社会整合的又一种制度性选择,构成公共物品供给与消费的基本单元。更多还原

【Abstract】 Due to the two characteristic of public goods, including both the jointness of supply and the impossibility of exclusion, the all members of group have intention to supply and demand public goods through free_riding.So the public goods’ supply is the typical tragedy of collective action. As a part of the whole social institution transformation, the urban administrative system has been changing from “ work unit system ", “ neighborhood system " to “ community system ", and in addition, its supplying system of community public goods has different characteristic in each historical period. The system of “ Government_work unit " to supply community public goods can’t meet the diversifiable and increasing needs of people. Under the background of work unit system to collapse, the urban community, as a institutional choice to governance, is becoming the elementary unit of supply and demand of social public goods.更多还原