污染环境中单种群生存分析

The Survival Analysis of Single Population in a Polluted Environment

本文研究了污染环境中种群的动力学模型,基于已有结果,考虑了内禀增长率为非线性函数的情形.利用微分方程定性理论中的比较定理,对于种群的持续生存与绝灭给出了判别条件.

In this paper,we research a model about population in polluted environment, based on the known results,we consider the case that the growth rate is a non-linear function on the concentration of the toxicant in the population.By Compassion Theorem,we give the conditions about the survival and extinction of the population.