机构地区: 东北师范大学生命科学学院植被生态科学教育部重点实验室
出 处: 《应用数学》 2004年第2期172-178,共7页
摘 要: 本文研究比率型非自治的捕食者 -食饵模型 .该系统是两个具有竞争关系的食饵种群被一个捕食种群捕食 .我们研究其动力学行为 ,包括持久性 ,全局渐近稳定性 ,周期解 。 In this paper,we study a nonaugonomous ratio-dependent predator-prey system with two competing prey predated by one predator.We show that this system is permanent and globally asymptotically stable under some appropriate conditions;for the periodic case and almost periodic case,we obtain conditions for existence,uniqueness and stability of a positive periodic and almost periodic solution respectively.