关键种,关键在哪里?  

KEYSTONE SPECIES: WHAT IS KEYSTONENESS?

作　　者：黄建辉[1] 韩兴国[1] 

机构地区：[1]中国科学院植物研究所植被数量生态学开放研究实验室,北京100093

出　　处：《植物生态学报》2001年第4期505-509,共5页Chinese Journal of Plant Ecology

基　　金：国家重点基础研究发展规划项目 (G2 0 0 0 46 80 2 -0 4)

摘　　要：物种在生态系统功能过程中并不是同等重要的 ,这已经是一个普遍接受的事实 ,而关键种和冗余种被认为是生态系统功能过程中两类极端的生物类群。由于关键种通常被认为在生态系统功能方面中有重要作用 ,因此有人认为 ,假如我们能够甄别生态系统中的关键种及其多方面影响的作用机制 ,我们就有可能得到整个或大部分生态系统功能过程的信息。因此 ,在考虑生物多样性保护 ,尤其是为了有效保护它们所产生的生态系统功能过程时 ,生态学家和保护生物学家们引入了关键种的概念。通过对关键种的保护 ,更有效地保护其所在生态系统的功能过程。通过对有关关键种研究的回顾 ,阐述了关键种的定量测度方法 ,关键种在保护生物学中的意义、应用及其局限。The fact that species are not equally important for the functioning of ecosystems is now widely recognised. With the presumed significance of keystone species in ecosystems, it is assumed that if we can distinguish the keystone species of an ecosystem and the mechanism through which they affect ecosystem processes, we will have obtained the most useful information on the functioning of the ecosystem. This information would be of great benefit to managers, especially when the keystone species itself is a target for management. Thus when considering biodiversity conservation, the term “keystone species” has been introduced by conservationists and ecologists to protect ecosystem functioning more efficiently with the protection of keystone species. In this paper, we reviewed the advances in researches on keystone species, and concluded the possible approach to determine quantitatively the keystone species in an ecosystem, and the significant, but limited, application of keystone species in biodiversity conservation.

关 键 词：关键种 测度 生物多样性保护 

分 类 号：Q948[生物学—植物学]