摘要
采用积分均值和微分不等式方法,研究了二维时变Volterra互惠系统的生存状况.在种群体内毒素浓度不同且污染环境容量较大的情况下,给出种群弱平均持续生存、一致持续生存和绝灭的充分条件.
In this paper we study the existence of two-dimensional time-varying Volterra cooperative system by using the methods of integral in mean and differential inequality principle. The sufficient conditions for weak persistence in mean, uniformly persistence and extinction have been obtained under the conditions of unequal concentration of toxicant in two species and a large capacity polluted environment.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第5期552-554,共3页
Journal of Sichuan Normal University（Natural Science）
基金
黑龙江省教育厅基金资助项目
