摘要
对一类食饵种群具有常数收获率的简化Holling Ⅳ型功能性反应捕食-食饵模型进行了研究.通过对模型等倾线性态的讨论,给出了系统平衡点存在的条件,并分析了平衡点的稳定性.最后用Dulac函数法并借助于盛金定理得到了极限环不存在的充分条件.
A predator-prey system with constant rate harvesting for prey and simplified Holling IV functional response is studied.The conditions of the existence for the equilibrium point are discussed by using isoclines shape,and the stability of the equilibrium point are analysed.Finally,the nonexistence of the closed orbit is proven by the Dulac function and Shengjin's theorems.
出处
《延边大学学报(自然科学版)》
CAS
2013年第2期93-96,共4页
Journal of Yanbian University(Natural Science Edition)
基金
黑龙江省教育厅科学技术研究项目(12531763)
齐齐哈尔大学青年教师科研启动支持计划(2012k-M31)