非简化模型的β—持续生存及β—绝灭

β PERSISTENCE OR β EXTINCTION OF THE UNSIMPLIFIED MODEL

给出了具有毒素影响的非简化单种群及两种群模型β—持续生存及β—绝灭的一些充分条件，为实际应用提供了一定的理论依据。

The β persistence orβ extinction of a finite time for the simplifled model has been studied,we will give some sufficient conditions onβ persistence orβ extinction of population for unsimplified single or two species communities in a polluted environment.It may provide theoretical basis for practical applications.