摘要
讨论一个捕食者和食饵均具有阶段结构的捕食模型的稳定性.通过分析特征方程,运用Hurwitz判定定理,讨论了该模型非负平衡点的局部稳定性;通过构造适当的Lyapunov泛函,运用LaSall不变集原理,讨论了该模型的非负平衡点的全局稳定性,从而得到了该生态系统永久持续生存与灭绝的充分条件.
The stability of a predator-prey model with stage structure for both the predator and the prey is investigated. By analyzing the corresponding characteristic equations, the local stability of each of feasible equilibria of the system is discussed. By using Lyapunov functions and the LaSalle invariant principle, the global stability of each of feasible equilibria of the model is discussed.
出处
《北华大学学报(自然科学版)》
CAS
2013年第6期621-625,共5页
Journal of Beihua University(Natural Science)
基金
国家自然科学基金项目(11101117)
关键词
捕食模型
阶段结构
稳定性
predator-prey model
stage-structure
stability