摘要
本文对一类食饵种群具有常数收获率的Ｋｏｌｍｏｇｏｌｏｖ系统进行了非线性分析，研究了 系统平衡点的性态，在较宽的条件下证明了系统不存在闭轨线；并获得了系统存在两个极限环的条件。
The paper is devoted to the nonlinear analysis of a Kolmogorov system with constant harvesting rate for the preys group. The nature of equilibrium points is studied. The nonexistence of closed orbit is proven in a large range of parameters. The conditions of the existence of (at least) two limit cycles are obtained.
出处
《生物数学学报》
CSCD
1999年第2期136-140,共5页
Journal of Biomathematics
