taptap下载安装安卓学报 ›› 2020, Vol. 38 ›› taptap点点手机网页 : 61-64.

• 基础科学 • 上一篇    

带脉冲毒素的随机三种群模型的动力学分析

高永馨,王娜娜   

  1. (taptap下载安装安卓理学院,天津300300)
  • 出版日期:2020-06-26 发布日期:2020-06-23
  • 作者简介:高永馨(1966—),女,吉林辽源人,教授,硕士,研究方向为常微分方程理论及其应用.
  • 基金资助:
    国家自然科学基金项目(11472298,11401574);中央高校基本科研业务费专项(ZXH2012K004);天津市自然科学基金项目(13JCQNJC04400)

Dynamical analysis on stochastic three-specy model with impusive toxicant

GAO Yongxin, WANG Nana   

  1. (College of Science, CAUC, Tianjin 300300, China)
  • Online:2020-06-26 Published:2020-06-23

摘要:

研究一类有脉冲毒素输入的Beddington-DeAngelis 功能性反应的三种群随机捕食者-食饵模型,来探究白噪声与环境毒素对模型动力学的影响。通过分析模型的极限系统,给出了种群灭绝、平均意义下强持久时间及平均意义下有上界的充分条件。

关键词: 三种群模型, 脉冲, 灭绝, 平均意义下强持久, 白噪声

Abstract: A stochastic three-specy prey-predator model with Beddington-DeAngelis functional response and impusive toxicant input is studied in order to find out how white noise and impusive toxicant input influence the dynamics of the model. By analyzing the limit system of the proposed model, the sufficient conditions for extinction, mean strong persistence and superior bound with average time are supplied.

Key words: three-specy model, impluse, extinction, mean strong persistence, white noise

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