摘要
研究了一类食饵种群与捕食者种群同时具有收获率的Holling-Ⅲ类功能性反应捕食系统.讨论了系统的平衡点,分析了中心焦点及稳定性,给出了极限环不存在的条件.
A prey-predator model with harvesting rates for preys and predators underHolling-Ⅲ functional response was studied.Discussed the model’s equilibrium points,analyzed the order and stability of the center focus,and then obtained the conditions for the nonexistence of limit cycle.
出处
《高师理科学刊》
2010年第5期12-15,共4页
Journal of Science of Teachers＇College and University
基金
黑龙江省教育厅科学技术研究资助项目(11531426)
关键词
收获率
平衡点
细焦点
极限环
harvesting rate
equilibrium point
weak focus
limit cycle
