研究了一类具有阶段结构与延迟自反馈的生态经济模型,利用重合度理论的Mawhin延拓定理,给出了使得生态经济模型正周期解存在的充分性条件,推广了已有的相关结果.
Periodic bioeconomics model with stage structure and delayed self-feedback effect is studied. With coincidence degree and related continuation theorem, sufficient criteria for the existence of positive periodic solutions of the model are established. Some existing results are generalized.