ABSTRACT

Knowledge of the drivers of liana community structure is fundamental to understand the processes driving community assembly. We investigated variation in liana community structure (diversity, composition, abundance, basal area, distribution) among different elevations, and assessed the environmental factors structuring composition and distribution. We randomly established thirty 20 × 20 m plots across three elevations (lower = 200 m a.s.l.; middle = 500 m a.s.l.; upper = 850 m a.s.l.) in the Mount Jerai Forest Reserve, Malaysia. We used Canonical Correspondence Analysis to assess the relationships between liana species distribution and composition, and environmental factors. Liana diversity differed significantly among elevations, being highest and lowest in the middle and upper elevations, respectively. Liana abundance and basal area were higher at lower elevations. Species abundance varied significantly across elevations. The environmental factors showed significant variation among the elevations. Liana species composition and distribution patterns were explained by elevation, soil moisture, Ca, P, pH and N. The different environmental factors affected species composition and distribution in different ways. These findings increase our understanding of the drivers of liana community structure and may be useful in liana management and conservation.

摘要

了解藤本植物社区结构的驱动因素对于理解推动社区组装的过程至关重要。我们调查了不同海拔高度之间藤本植物群落结构（多样性、组成、丰度、基底面积、分布）的变化，并评估了构成组成和分布的环境因素。我们在马来西亚 Jerai 森林保护区的三个海拔高度（下 = 200 m asl；中 = 500 m asl；上 = 850 m asl）随机建立了 30 个 20 × 20 m 的地块。我们使用典型对应分析来评估藤本植物物种分布和组成与环境因素之间的关系。藤本植物多样性在海拔之间存在显着差异，分别在中部和上部海拔最高和最低。藤本植物丰度和基面积在低海拔较高。不同海拔高度的物种丰度差异很大。环境因素在海拔之间表现出显着差异。藤本植物的物种组成和分布格局通过海拔、土壤水分、Ca、P、pH和N来解释。不同的环境因素以不同的方式影响物种组成和分布。这些发现增加了我们对藤本植物群落结构驱动因素的理解，可能对藤本植物的管理和保护有用。不同的环境因素以不同方式影响物种组成和分布。这些发现增加了我们对藤本植物群落结构驱动因素的理解，可能对藤本植物的管理和保护有用。不同的环境因素以不同方式影响物种组成和分布。这些发现增加了我们对藤本植物群落结构驱动因素的理解，可能对藤本植物的管理和保护有用。