收获策略

本文主要研究具有扩散和年龄结构的三种群竞争系统的最优收获策略问题。

This paper is mainly concerned with optimal harvesting policy for three competing species with age-dependent and diffusion .

作为实例，本文讨论了关于凤眼莲的多目标最佳可持续利用和满意可持续收获策略。

As a case study , the multiobjective optimal sustainable use and the strategy of satisfactory sustainable yield of Waterhyacinth are discussed .

目前，单种群生物资源的最优收获策略，大都是通过微分方程的稳定性理论来讨论的。

At present , the optimal harvesting strategy for biological resources of single population is usually discussed by the stability of Differential Equation theory .

根据引入约束条件前后最优收获策略的差距，测算了由于为社会提供了生态产品而对森林资源经营者造成的直接经济损失。

By comparing the difference of maximum harvest yield between the conditions of whether the restriction condition is introduced or not , the direct economic loss of the forest resource operators for the reason of providing ecology production to the society is calculated .

可再生资源非线性收获的策略研究

The Research on The Nonlinear Harvest Strategy of Renewable Resources

建立并分析了一类非线性生育率阶段结构的单种群的收获模型，得到了正平衡点全局稳定的条件，给出了最优收获策略。

A harvesting model of single population with stage structure and nonlinear birth rate is studied . And the existence of positive equilibrium point and the globally asymptotic stability are determined .