典型海洋生态系统中关键种的研究进展

随着人类对生态环境和生物多样性保护意识的增强，基于食物网结构和物种间相互作用的关键种(Keystone species)这一概念一经提出就引起了广泛关注和讨论，相关研究亦成为国际生态学研究的热点。本文从关键种概念起源出发，探讨了关键种定义中丰度与作用的不成比例性、在实际应用中存在的模糊性和无法量化等问题，综述了不同类型海洋生态系统中关键种的特点和共性问题，探讨人类作为超级关键种(Hyperkeystone species)对海洋的影响，并尝试提出人类应当如何理性看待关键种及其在海洋生态系统中的功能和作用。

Research Progress of Keystone Species in Typical Marine Ecosystems

With the enhancement of human awareness of ecological environment and biodiversity protection,the concept of keystone species based on food web structure and species interaction has attracted wide attention and discussion since it was proposed,and the related research has become a hot spot in international ecology research.Starting from the origin of the concept of keystone species,the disproportionality of abundance and function in the definition of keystone species,the ambiguity and inability to quantify in practical applications were discussed in this article.The characteristics and common problems of key species in different types of marine ecosystems are summarized,and the impact of human beings as hyperkeystone species on the ocean is discussed.We try to put forward the problem how human beings should rationally view keystone species and their functions and roles in marine ecosystems.