摘要
研究了一类具有多时滞及HollingⅡ类功能反应函数的三种群食物链系统,证明了系统正解的存在性,利用比较原理给出了系统为永久持续生存的充分条件。
A food chain model with time delays and HollingⅡ functional response is studied in this paper.The existence of the positive solutions of this system is established,and sufficient conditions about the permanent persistent survival of the system are derived by using comparison principle.
出处
《黑龙江八一农垦大学学报》
2011年第6期75-77,共3页
journal of heilongjiang bayi agricultural university
关键词
食物链系统
永久持续
时滞
功能反应
food chain system
permanent persistent survival
time delay
functional response