中文摘要：

通过研究营养物与污染同时对海洋生态造成的影响。及系统平衡点的存在性、稳定性及分支的产生，分析其动力学行为。发现海洋营养物的输入对海洋生态系统的影响非常大，这对海洋生态研究具有一定意义．

英文摘要：

This paper focuses on joint effects of nutrient and containment on marine ecology system. Its dynamical behaviors are studied, such as the existence, the stability of equilibria and Hopf bifurcation. It is shown that there is a corresponding effect on the marine ecosystem about the value of the external nutrient input. The research of this paper is helpful to marine ecological system.