中文摘要：

针对物流企业进行合作的外部正效应问题,本文通过建立关键节点与非关键节点物流企业合作演化博弈模型进行分析求解,结果表明关键节点与非关键节点物流企业的合作策略与双方合作收益密切相关,当双方合作收益不断变化时就会出现多种演化稳定均衡;如果＂搭便车＂行为从对方采取合作策略中获得的收益很大,则物流企业进行合作的积极性会降低。因此,物流行业协会应进行调控,对＂搭便车＂行为进行惩罚,促使物流企业进行合作;对于合作收益增长比较小的物流企业给予奖励,以激励他们进行合作,提高物流企业整体的信誉。

英文摘要：

As for positive external effect of cooperation in logistics enterprises, the paper carries out analysis of it by building evolutionary game model of cooperation between key nodes logistics enterprises and non key nodes logistics enter- prises. Research results show that the cooperation strategies of both key nodes logistics enterprises and non key nodes lo- gistics enterprise are related to the increased benefits of cooperation between the two parties, when the increased benefits of the cooperation between the two parties change, some evolutionarily stable equilibrium is found; if ＂free rider＂ can gain a lot from the other side when they take cooperation strategy, logistics enterprises will reduce cooperation initiative. Therefore, logistics industry association should use macro-control to improve the overall credibility of logistics enterprises and punish the ＂free rider＂ behavior to promote the logistics enterprises to cooperate; reward logistics enterprises whose cooperation revenue growth is relatively small to motivate them to cooperate, and improve the overall credibility of logis- tics enterprises.