Effect of impulsive controls in a model system for age-structured population over a patchy environment

Effect of impulsive controls in a model system for age-structured population over a patchy environment
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斑块环境中年龄结构人口模型系统中脉冲控制的影响

DOI:
10.1007/s00285-017-1172-z
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发表时间:
2017-09
期刊:
Mathematical Biology
影响因子:
--
通讯作者:
Xingfu Zou
Xingfu Zou
中科院分区:
其他
文献类型:
--
作者:
Zhichun Yang;Chuangxia Huang;Xingfu Zou

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本文严格地导出了一个非常一般的n-斑块上的脉冲时滞微分方程模型,用以描述n-斑块上单种群的脉冲控制。该模型允许由未成熟和成熟组成的年龄结构,并考虑了成熟和未成熟的流动性和淘汰。在三种特殊情形下,分别得到了该模型系统的灭绝和持续生存的条件:(1)无脉冲控制;(2)仅对未成熟系统进行脉冲剔除;(3)仅对成熟系统进行脉冲剔除.在持久性的情况下,持久性水平也估计系统的情况下,相同的n块,有关的问题的动态的多维地图。最后给出了两个算例及其数值模拟结果,以说明所得结果的有效性.在理论分析的基础上,提出了脉冲淘汰的策略,以消除害虫种群。
In this paper, a very general model of impulsive delay differential equations in n-patches is rigorously derived to describe the impulsive control of population of a single species over n-patches. The model allows an age structure consisting of immatures and matures, and also considers mobility and culling of both matures and immatures. Conditions are obtained for extinction and persistence of the model system under three special scenarios: (1) without impulsive control; (2) with impulsive culling of the immatures only; and (3) with impulsive culling of the matures only, respectively. In the case of persistence, the persistence level is also estimated for the systems in the case of identical n patches, by relating the issue to the dynamics of multi-dimensional maps. Two illustrative examples and their numerical simulations are given to show the effectiveness of the results. Based on the theoretical results, some strategies of impulsive culling are provided to eradicate the population of a pest species.
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发表时间: 2006-08
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