Abstract:Exotic invasiveness and community invisibility are two key factors to study the mechanism of biotic invasion. Referring to related researches, we consider that the colonization (migration or propagation), mortality and competition are the inherent essence determining successful exotic invasion. In the paper, from a new angle of considering alien species invasion as a disturbance to native community, we propose a disturbance model on biology invasion, which is based on Tilman‘s multispecies coexistence model...