中文摘要：

以牡鹿捕捉博弈描述现实社会中自利个体的两难选择，研究空间结构对合作行为的影响．首先用平均场理论分析群体在随机作用条件下产生的演化均衡，然后用基于agent的仿真实验研究群体在4种不同纬度空间规则格子上的行为演化．理论分析及实验结果表明，空间结构对合作行为的影响依赖于博弈中的背叛诱惑程度．当背叛诱惑较小时，空间结构对合作行为表现出促进作用．但随着背叛诱惑程度的增大，空间结构对合作行为的作用逐渐由促进转变为抑制．

英文摘要：

Describing the social dilemma of selfish individuals by stag-hunt game, this paper examines the effect of spatial structure on cooperative behavior. Mean-field theory is used to analyze the evolutionary equilibrium for those individuals who interact randomly, and agent-based simulation experiment is implemented to explore the evolution of behaviors for individuals locating on spatial regular lattices with four different neigh-borhood sizes. The theoretical and numerical results show that the effect of spatial structure on cooperative behavior depends on the defect temptation in the game. When ＇the defect temptation is small, spatial structure has positive effect on the evolution of cooperative behavior. However, with the increase of defect temptation the positive effect of spatial structure on cooperative behavior changes gradually to the negative one.