【摘要】 通过介绍植物群落的可入侵性的的相关概念和理论,阐述了影响群落可入侵性的各种因素。重点评介了Davis等(2000)提出的“可用资源波动说”的内容及其依据。该理论的要点是植物群落中可用(或未曾利用)资源的增加将使该群落的可入侵性(或对于入侵的易感性)增加。将这一理论用于分析实际植物入侵事例,可以得到较合理的解释。更多还原

【Abstract】 Invasion of the non endemic plant species has become as a global important problem of biological safety, and the serious ecological, economic and social problems resulted in by the invasion of the non endemic plant species have been paid great attention to in the world. The mechanism of biological invasion has become as a hot domain in life sciences including ecology and biodiversity. In this paper, the related concepts and theories about invasibility of plant communities are introduced, and the factors affecting invasibility of plant communities are analyzed. These factors can be simulated with an equation:E=IS,(I=Ia+Ii,S=SvShScSm). The theory about invasibility of plant communities, developed by Davis in 2000, is distinctly introduced and analyzed. The key standpoint of the theory is that “if the available resources in a plant community are increased or become more susceptible to invasion, the invasibility of the plant community is increased”. Thus, the rational explanation can be achieved if the theory is used in analyzing plant invasion.更多还原