高阶作用对集团内捕食系统物种共存的影响

Effect of Higher-Order Interactions on Species Coexistence in Intra-Guild Predation System

建立了常微分方程组模型,在集团内捕食系统中,分别考察种内高阶相互作用、种间高阶相互作用、密度调节及三者融合作用对种群密度产生的影响.MATLAB数值模拟结果表明,种内高阶相互作用、种间高阶相互作用均能够促进食饵和捕食者之间的共存,影响强度与密度调节相似,但是作用机制不同.

An ordinary differential equation system model is established to study the effects of intra-specific high-order interaction, inter-specific high-order interaction and density-mediated effect, as well as the integration of the three on population density.MATLAB numerical simulation shows that intra-specific high-order interaction and inter-specific high-order interaction can promote the coexistence between prey and predator, and the influence intensity and density-mediated effect are similar, but the action mechanism is different.