研究了一类具有反馈控制和Hlling-Ⅱ类功能反应的基于比率的非自治捕食一竞争模型的渐进性。利用比较原理给出了模型持久生存的条件,通过构造Lyapunov函数方法,得到了相应的周期系统正解的存在唯一且全局渐进稳定性的充分条件,并举例说明结论的可实现性。
A nonautonomous predator-prey and competition system of ratio-dependent and functional response Ⅱ' system with feedback controls is investigated, sufficient conditions are obtained for the persistence of this system by using comparison theorem. Especially, when the system is a periodic system, suffcient conditions are derived to guarantee the existence ,uniqueness and global asymptotic stability of the positive periodic solution by using the method of constructing Lyapunov-type functions.