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脉冲干扰对具有分布时滞的食物链模型的影响
发表时间:2009-10-15 浏览量:1692 下载量:825
全部作者: | 郭中凯,李自珍,马智慧,王文婷 |
作者单位: | 兰州大学数学与统计学院;兰州大学干旱与草地农业生态教育部重点实验室 |
摘 要: | 研究了具有脉冲干扰和分布时滞的三物种食物链系统。首先,利用脉冲微分方程的Floquet理论和比较原则得到了捕食者灭绝的周期解的全局稳定的充分条件。同时,给出了三物种持续生存的充分条件。最后,分析了顶级捕食者投放量对三物种食物链系统的影响。 |
关 键 词: | 数学生态学;脉冲干扰;分布时滞;比较原则;Floquet理论 |
Title: | Effects of impulsive perturbations on a food chain model with distributed time delay |
Author: | GUO Zhongkai, LI Zizhen,, MA Zhihui, WANG Wenting |
Organization: | School of Mathematics and Statistics, Lanzhou University;Key Laboratory of Arid and Grassland Agroecology of the Ministry of Education, Lanzhou University |
Abstract: | In this paper, a three-species food chain system with impulsive perturbations and distributed time delay is investigated. Firstly, by using Floquet theory of impulsive differential equation and comparison theorem, the global stability of periodic predator eradication solution was considered. Secondly, the conditions which guarantee the three species’ permanences were obtained. Finally, the effects of top predator release quantity on the three-species food chain system were analyzed. |
Key words: | mathematical ecology; impulsive perturbation; distributed time delay; comparison theorem; Floquet theory |
发表期数: | 2009年10月第19期 |
引用格式: | 郭中凯,李自珍,马智慧,等. 脉冲干扰对具有分布时滞的食物链模型的影响[J]. 中国科技论文在线精品论文,2009,2(19):2051-2057. |

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