讨论了一类具有时滞和避难所的比率型非自治三种群捕食者-食饵模型,运用Liapunov函数方法得到了该模型一致持久和全局渐近稳定的充分条件;并讨论了其周期系统正周期解的存在唯一性和全局吸引性.
In this paper,we employ Liapunov method to study the persistence and global asymptotic stable of positive solutions for the ecologic system of the nonaugonomous ratio-dependent predator-prey system with delays and refuges.Then we discuss the existence,uniqueness and stability of a positive periodic solution for corresponding periodic system.