n种群Lotka-Volterra离散捕食链型系统的持久性

Permanence for n-species Predator-prey Discrete Chain Systems of Lotka-Volteera Type

研究了n种群Lotka Volterra离散捕食链型系统的持久性 ,当系统所有含零坐标的平衡点都在 R+n 上时 ,在R+n 上持久的充要条件为系统存在正平衡点 .

In this paper, we study the permanence for n species predator prey discrete chain systems. When all the equilibrium points some of whose coordinates are zeroes are on R + n, the necessary and sufficiet condition for the permanence is that the system has positive equilibrium points.