考虑一类随机三种群捕食模型的持续性与灭绝性,该系统两个具有互惠关系的食饵种群被一个捕食者种群捕食.在一些假设条件下,利用伊藤公式,建立种群持续生存与灭绝的充分性条件.数值模拟验证和补充了理论结果.%The persistence and extinction for a stochastic three species predation model is considered.In this system,two preys cooperated with each other are caught by the third species.Under some assumptions,by using Its formula,a sufficient condition of the persistence and extinction for the species is established.Some numerical simulations are carried out to support and supply the theoretical results.
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