数学物理学报 ›› 2010, Vol. 30 ›› Issue (2): 417-424.

• 论文 • 上一篇    下一篇

大小结构种群模型的平衡解的稳定性

 刘克英1, 刘伟安2   

  1. 1.华北水利水电学院 数学与信息科学学院|郑州 450011;
    2.武汉大学 数学与统计学院|武汉 430072
  • 收稿日期:2007-12-19 修回日期:2009-01-19 出版日期:2010-04-25 发布日期:2010-04-25
  • 基金资助:

    国家自然科学基金 (10471108) 和华北水利水电学院高层次人才科研启动项目 (200825) 资助.

Stability of Equilibrium Solutions to Size-structured Population Models

LIU Ke-Ying1, LIU Wei-An2   

  1. 1.Department of Mathematics and Information Sciences, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011;
    2.School of Mathematics and Statistics, Wuhan University, Wuhan 430072
  • Received:2007-12-19 Revised:2009-01-19 Online:2010-04-25 Published:2010-04-25
  • Supported by:

    国家自然科学基金 (10471108) 和华北水利水电学院高层次人才科研启动项目 (200825) 资助.

摘要:

考虑了一个大小结构的非线性种群模型, 其各变化率不但依赖于个体的大小, 而且依赖于总群口. 利用扰动方法, 得到了特征方程并分析了平衡解的稳定性, 对于特殊的变化率, 给出了平衡解稳定的充分条件.

关键词: 稳定性, 平衡解, 大小结构的种群模型

Abstract:

In this paper, the authors are concerned with a nonlinear size-structured population model with the vital rates depending both on the individuals' size and on the total population. They arrive at a characteristic equation by the
perturbation method and analyze the stability of equilibrium solutions. For some special cases, sufficient conditions for the stability of equilibrium solutions are obtained.

Key words: Stability, Equilibrium solution, Size-structured population model

中图分类号: 

  • 92D25