山西接骨木群落分布及其与环境因子的关系

Relationship between Sambucus williamsii Community Distribution and the Environmental Factors in Shanxi

2012年7—10月对山西接骨木分布区进行植物群落学调查,研究山西接骨木群落分布及其与环境因子之间的关系。结果表明:TWINSPAN分析将80个样方分为13个群落类型;CCA第1排序轴主要反映海拔和全钾含量的变化,第2排序轴主要反映坡度和pH值的变化;结合环境因子间的相关关系和CCA排序结果,发现海拔、全钾含量和pH值是影响接骨木群落分布的主要环境因子;实际调查发现,接骨木主要分布在中高海拔地区的阳坡和半阳坡上。

In order to study the relationship between the community distribution of Shanxi Sambucus williamsii and the environmental factors, we collected randomly samples of S. wiUiamsii 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.