关键词: 生态补偿, 矿山环境恢复治理, 保证金制度, 混合策略纳什均衡, 公众参与, 合谋行为

Abstract: Mineral explorations can cause the deterioration of ecological environment. At home and abroad, the mine rehabilitation deposit system has been set up to compel the mining enterprises to take charge of a series of restoration tasks for mining area ecological environment. However, during the implementing process of this system, it is prone to moral hazard without public supervision, which is the conspiracy behavior between the mining enterprises and local government supervisors. At present, the mine rehabilitation deposit system in China does not include the content of public participation, whose defection needs to be supplemented and revised. This paper has established a tripartite game model of public, mining enterprises and the local government supervisor based on the game theory. According to the equilibrium results of the game model, this research results are that the conspiracy can be prevented and controlled by improving the probability of public supervision and the probability of effective public supervision, and reducing the cost of public supervision. Finally, it has put forward several corresponding policy recommendations.

Key words: ecological compensation, mine environment restoration and control, deposit system, mixed-strategy Nash equilibrium, public participation, conspiracy