摘要
研究了具有Holling Ⅳ型功能反应的N种群食物链离散系统,并且运用差分方程的比较原理和数学归纳方法,得到了该系统一致持久的充分条件.
This paper discussed the discrete N-species food-chain system with the Holling IV functional responses.By applying the comparison theorem of difference equation and the mathematical induction method,sufficient conditions are established for the permanence of the obtained results.
作者
张玲
曲文娟
ZHANG Ling;QU Wen-juan(Department of Science Teaching,Dingxi Campus of Gansu University of Chinese Medicine,Dingxi Gansu 743000;Second Middle School of Longxi County,Longxi Gansu 748100)
出处
《甘肃高师学报》
2018年第2期44-47,共4页
Journal of Gansu Normal Colleges
基金
定西师范高等专科学校一般项目“基于最优化理论的甘肃省基层中医药的需求,发展现状及对策研究”(TD2016YB10)
关键词
离散系统
食物链
N种群
持久性
discrete system
food-chain
N-species
permanence
