浙江天台山七子花群落研究

七子花为优良的观花树种，此种珍贵、罕见，已临近濒危境地。本文以分布在浙江天台山的七子花林为对象，分析了群落的特征和性质。七子花群落垂直结构较复杂，可分为乔木层、灌木层、草本层，亦有数量较多的层间植物。群落的优势种显著，乔木层的中多样性指数较高，各样地间的植物种类具有一定的相似性。七子花种群年龄处于衰退型阶段，天然更新不佳。种群的分布格局集群分布。

A STUDY ON Heptacodium Miconioides COMMUNITY IN THE TIANTAI MOUNTAINS OF ZHEJIANG PROVINCE

Heptacodium miconioides, fine trees for flowers tending,are precious and rare ones,and are on the verge of extinction.This paper analyzes the community characteristics and quality of the Heptacodium miconioides forest distributed in the Tiantai Mountains of Zhejiang Province. The vertical structure of Heptacodium miconioides is rather complicated.It can be divided into arborous layer,shrub layer,herbaceous layer and interstratum plants which are numerous in quantity.The community has an outstanding dominant species and the arborous layer possesses a comparatively high diversity index.The similarity is rather striking among different quadrats species. The Heptacodium miconioides community is at a declining stage,and the distribution pattern of the community shows a clump.