物种多样性和群落稳定性的关系一直是生态学研究的一个重要内容。尽管不少研究表明，生物多样性可以促进群落时间稳定性，然而关注生物多样性与稳定性其它度量指标之间关系的研究较少且结果各异，影响了有关多样性-稳定性关系及稳定机制的研究进展。本项目通过对滇西北典型高原湿地纳帕海、碧塔海和属都湖草甸样地施加不同强度的践踏干扰，系统研究干扰对稳定性的三种主要度量指标，时间稳定性、抵抗力稳定性和恢复力稳定性的影响作用，并以干扰作用下草甸植被的功能性状特征为切入点，阐明不同干扰强度下群落功能性状的表达特点与分布格局，分析以功能性状为基础的功能丰富度和以物种形态分类为基础的物种丰富度之间的关系，以及它们对稳定性不同度量指标的影响和作用机制，为深入探讨多样性-稳定性关系和多样性稳定机制提供新的研究思路和方法，并为滇西北高原湿地草甸的保护与管理提供科学依据和参考价值。

The relationship between biodiversity and stability remains one of central topics in ecological field. Although many studies have shown that biodiversity can increase temporal stability, one aspect of stability, other important aspects of stability, such as resistance and resilience, have been less well studied despite the relevance of these aspects of stability for understanding anthropogenic disturbance on ecosystems. Also, the limited number of studies that test the relationship between biodiversity, resistance and resilience have yielded mixing results, all of which severely impede the process of understanding biodiversity-stability relation and associated stabilizing mechanisms. This study will apply trampling experiments onto plateau wetland meadows in Napahai, Bitahai and Shuduhu of southwestern Yunnan province, with the intensity of trampling disturbance manipulated in order to mimic the scenario of ecotourism-related trampling disturbance on such meadows, and to systematically study the impacts of such trampling disturbance on temporal stability, resistance and resilience that represent the major aspects of stability. Meanwhile, a functional-based approach will be applied to help understand characteristics and proportions of different functional traits under the influence of trampling disturbance. Furthermore, functional richness based on functional trait metrics, as well as species richness based on taxonomic classifications, will be used to test their relationship with different stability aspects and to test underlying stabilizing mechanisms. Therefore, this functional-trait approach could help link plant community ecology and functional ecology well, shed light on new methods and approaches that can be used to better understand biodiversity-stability relation and associated stabilizing mechanisms, and provide theoretical basis and scientific evidence for the protection and management of alpine meadow components of plateau wetlands.