水土保持研究2013，Vol.20Issue(1)：102-106,5.
阴阳坡植物功能性状与环境因子的变化特征
Feature Variations of Plant Functional Traits and Environmental Factor in South-and North-Facing Slope
摘要
Abstract
Plant traits link environmental factors, individuals and ecosystem structure and functions as plants respond and adapt to the environment. The characteristics of plant functional traits and variation law by environmental changes are important to understand plant community composition and adaptation mechanism in different environmental gradients. Plant functional traits and soil element contents were studied along north-facing slope to south-facing slope in the alpine meadow. The results showed that the variation of the soil water content, the total phosphorus and soil organic carbon in different habitats from south-facing slope to north-facing slope were in the sequence of south-facing slope<north-facing slope, whereas soil total nitrogen content did not change significantly in the south-facing and north-facing slope, soil N : P ratio and pH changes followed the order of south-facing slope>north-facing slope. The plant functional traits of leaf phosphorus content (LPC) and specific leaf area (SLA) of the habitat from south-facing slope to north-facing slope were in the order of north-facing slope>south-facing slope, except that leaf nitrogen content, but leaf N : P ratio of north-facing slope were significantly less than the south-facing slope. Plant functional traits with the aspect of regular changes reflected the environmental filtering effects in the process of vegetation community forming in an alpine meadow. Correlation analysis showed that soil water content and soil nutrients were the important factors affecting plant functional traits in south-facing slope to north-facing slope, and soil water content was the dominant factor.关键词
植物功能性状/阳坡/阴坡/环境筛选/高寒草甸Key words
plant functional traits/ south-facing/ north-facing/ environmental filtering/ alpine meadow分类
农业科技引用本文复制引用
刘旻霞,马建祖..阴阳坡植物功能性状与环境因子的变化特征[J].水土保持研究,2013,20(1):102-106,5.基金项目
国家自然科学基金(30970465) （30970465）
甘肃省教育厅研究生导师项目(0901-07) （0901-07）
甘肃省自然科学基金项目(1107RJZA174) （1107RJZA174）
