影响外来植物入侵的几个主要叶功能特性

Several leaf functional traits which affect the invasion of exotic plants

就影响外来植物入侵的几种较重要的叶功能特性进行介绍,包括构建成本、叶N含量以及它们在光合各组分的分配模式、叶的比叶面、叶寿命等,说明它们在外来植物入侵中的作用以及它们之间的相关关系。外来入侵种具有相对较低的CC,SLA则较高。入侵植物具有较强的形态和生理可塑性以及适应性的叶氮分配模型。叶寿命随叶子构建成本的增加而变长。除常绿植物外,一般LLS长的植物比LLS短的成本回收期长。

Several leaf functional traits which affect the invasion of the exotic plants were reviewed,including the leaf nitrogen content and nitrogen partition models,construction cost（CC）,specific leaf area（SLA）,leaf longevity life span（LLS） and payback time（PT） et al.Their impacts during the invasion of the exotic plant were described respectively,and their interactions among them also explained.Compared with native plants,exotic plants have lower CC,and higher SLA.Invasive plants have good physiological and phenotypic plasticity and strategy of optimization of nitrogen partitioning model adapt to the changing environments.LLS increased with the CC,and decreased with the payback time（PT）,except evergreen plants.