具有收获与投放的二维Lotka-Volterra模型的永久持续生存

Permanence for Two species Lotka Volterra Models with Harvest or Throw in

研究了具有收获与投放的二维Lotka Volterra模型的永久持续生存问题 。

The permanent problem for Two species Lotka Volterra models with harvest or throw in is investigated,some sufficient condition for a model to be permanent are obtained.\;