【摘要】 系统的讨论了具有比率依赖和密度制约的周期捕食-被捕食系统的持久性问题,不仅得到了系统一致持久的充分条件,还得到了必要条件,并且持久性条件在模型中得到验证.更多还原

【Abstract】 In this paper,we systematically discussed uniform permanence of a nonautonomous density dependent and ratio-dependent predator-prey system.The sufficient and necessary conditions of the uniform persistence of the system were obtained.更多还原