天台山七子花群落特征的初步研究

Preliminary studies On the Phytocoenosis Features of the Heptacodium Miconioides Forests in Tiantal Mountain of Zhejiang Province

天台山的七子花林中,常见的种子植物有125种,隶属51科、102属。本文以七子花林为对象,分析了群落的区系组成,建群种的优势度,群落的外貌和结构等。 按Raunkiaer的生活型谱统计,高位芽植物占70.8％,地面芽植物占22.3％,地下芽植物占4.6％,一年生植物占2.3％。与本省常绿、落叶阔叶混交林生活型谱有些相似,都是高位芽植物占优势。叶的性质以小型叶为主,占53.1％。叶型以单叶比例最高,占78.5％。群落在结构上可分为乔木层、灌木层和草本层,亦有数量不多的层间植物。

There are 125 species (51 families, 102 genera) of seed plants in the Heptacodium micomioides forests inTiantai Mountain. In this paper, the Heptacodium miconioides forests are analyzed on the basis of the floristiccomposition, the dominat species and the physiognomy and structure of the community. The life forms are in accordance with Raunkiaer's classification: phaenerophytes(70.8%), hemicrypto-phytes (22. 3%), geophytes(4. 6%) and therophytes(2. 3%). The high percentage of phaenerophyta is simi-lar to the life form spectrum of the evergreen broad-leaf and deciduous broad-leaf mixed forest of ZhejiangProvince. The leaf size of the vegetation is mainly microphylla (53. 1%). 75. 8% of the leaf pattern is simpleleaf. The recovery vegetation stratification is divided into: arborous layer, shrub layer and herbaceou.