关键词: 接骨木, 环境因子, 双向指示种分析, 典范对应分析, 植物群落

Abstract:

In order to study the relationship between the community distribution of Shanxi Sambucus williamsii and the environmental factors, we collected randomly samples of S. williamsii in the distribution area of Shanxi from July to October in 2012. The two-way indicator species analysis (TWINSPAN) of the samples showed that the 80 quadrats were divided into 13 community types. The first sequence axis of CCA mainly reflected the variation in elevation, total potassium, and the second sequence axis reflected the variation in slope, pH value. Combining the correlation between the environmental factors with the CCA sequencing results, we found that elevation, total potassium,and pH value were the main environmental factors that affected the distribution of S. williamsii community. At the same time, an actual survey showed that S. williamsii was mainly distributed in the sunny, semi-sunny slope of middle and high elevation area.

Key words: Sambucus williamsii, environmental factors, two-way indicator species analysis, canonical correspondence analysis, plant community