海南岛五指山的森林植被　Ⅲ．五指山森林植被的分布与数值分类

The Forest Vegetation of Mt.Wu-zhi Shan in Hainan Island Ⅲ. The distribution and data classification of forest vegetation in Mt.Wu-zhi Shan

本部分定量地分析了五指山森林植被的垂直分布规律并对该森林植被进行了数值分类．在森林植被的数值分类过程中，本文尝试性地提出了新的改进方法，在数值分类时，充分地考虑了群落的组成戍分和结构特征，先把各群系中的物种，按重要值大小排列，然后按公式进行群落相似系数计算，最后用组平均法进行聚类分析，取得较为理想的效果．

The vertical distribution of forest vegetation in Mt. Wu-zhi Shan is studied in this paper. A renewing classification method of cluster analysis (group-average) about tropical forest vegetation is put forward by considering habitat condition, composition and structure of plant communities.