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一类具有时滞和基于比率的捕食扩散系统.

A Predator-Prey Ratio-Dependent System with Time Delays in Two-patch Environments
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摘要 研究了一类具有时滞和基于比率的非自治捕食-食饵扩散模型,通过利用微分不等式、比较原理和构造适当的Lyapunov泛函,得到了该系统持续生存和存在全局稳定的正周期解的充分条件. A nonautonomous ratio-dependent predator-prey diffusion model with time de- lay is investigated.It is shown that the system is uniformly persistent under some appropriate conditions,and sufficient conditions are obtained for the global stability of the positive periodic solution of the system.
机构地区 吕梁学院数学系
出处 《数学的实践与认识》 CSCD 北大核心 2013年第21期272-277,共6页 Mathematics in Practice and Theory
基金 山西省教育厅教学改革项目(J2011101,2009370,J2012111) 吕梁学院校内基金项目(ZRXN201205) 吕梁学院青年基金项目(ZRQN201204)
关键词 时滞 扩散 比率依赖 持续生存 周期解 time delay diffusion ratio-dependent uniform persistence periodic solution
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