建立污染喀斯特环境下具瞬时与非瞬时脉冲效应的单种群动力学模型.利用 脉冲微分方程理论,得到系统种群持续生存的控制阈值.研究结果表明瞬时脉冲收获量 与非瞬时脉冲收获区间长度对于系统种群持久起着重要作用,结论为现实的生物资源管理提供了可靠的策略支持.

In this paper, we construct a single population model with transient/non-transient impulsive effects in karst environments. By the theories of impulsive differential equations, we obtain the controlling thresholds of the permanence of the investigated system. The results indicate that the amount of transient impulsive harvesting and the non-transient impulsive harvesting interval play important roles in the permanence of population. Our results also provide reliable tactic basis for the practical biological resource management.