摘要
讨论了两种群均具有常收获率或常投放率的Ｌｏｔｋａ－Ｖｏｌｔｅｒｒａ系统极限环的个数问题．实例分析表明：此类系统可以存在两个极限环，且有可能存在两个以上的极限环，从而回答了文献［２］中的一个问题．
In this paper, we study the number of limit cycles in Lotka-Volterra systems with two species which both possess the constant harvest rate or investment rate. The result shows that there will exist at least two limit cycles for some such systems. Thus it solves a problem in the article [2].
出处
《华中师范大学学报（自然科学版）》
CSCD
1995年第3期281-284,共4页
Journal of Central China Normal University：Natural Sciences
关键词
常收获率
极限环
L-V系统
种群
捕食系统
Lotka-Volterra systems
the constant harvest rate
the constant investment rate
limit cycle
