外来种入侵与物种多样性

Exotic invasion and species diversity

在入侵生态学研究方面 ,物种多样性与生物入侵之间的关系已成为当前研究和争论的焦点。自Elton的经典假说提出以来 ,物种丰富度高的群落比物种贫乏的群落更能抵抗外来种入侵的观点得到广泛接受。一些理论模型和多样性处理实验支持了该假说。但现在越来越多的野外观测和实验研究开始对这一经典假说提出异议 ,甚至反对。同时 ,在入侵生态学广泛受到关注的今天 ,大量的实验研究也提出了一些新的观点。本文对Elton经典假说提出以来全球有关物种多样性与生物入侵关系的主要研究及其观点进行了评述 ,以期为我国有关研究工作的开展提供参考。

The relationship between species diversity and biological invasion has become a debate in invasion ecology in recent years. It was widely accepted that richer community was less invasible than poor ones since Elton's classic hypothesis was proposed in 1958. There were some theoretical models and experimental manipulations of diversity to support this view as well. However, more and more field investigations and experiments began to question this classic view,with some new viewpoints introduced . Some important research on the relationship between species diversity and biological invasion after Elton's hypothesis has been reviewed in this paper.