台湾亚高山寒温性针叶群系植被地理

Geographic Phytocommunity of Subalpine Firgid- Temperate Coniferous Formation on Taiwan

台湾山地针叶木本群落中,亚高山寒温性针叶群系是台湾亚高山山地重要的群落类型,分布在中央山脉玉山为代表的中北部、中南部,海拔2 500 m山地上部。主要为台湾冷杉、台湾云杉以及混有台湾铁杉的群系,下层灌木有杜鹃、小蘖、柃木、荚蒾、冬青,草本层主要是玉山竹形成的丛生型占优势以及台湾瘤足蕨,喜冬草构成。根据亚高山寒温性针叶群落的种类组成、结构、外貌和生态特征可划分为5个群系:1.台湾冷杉群系;2.台湾云杉群系;3.台湾冷杉、台湾云杉群系;4.台湾冷杉、台湾铁杉群系;5.台湾云杉、台湾铁杉群系。由于本群系是自然历史形成的特有种残留,在人为的影响下遭受不断破坏,对于此类群落必需要严加保护扩大分布。

This paper deals with the distribution phytosociological character of the Taiwan subalpine paucedrymion coniferous formation,remaining in the centeral southern mountatin range of Taiwan,which is distributed mainly over mountains at 2 500-3 500 m in altitude.It is the only subalpine frigid - temperate coniferous type and is considered as an important component of the vertical vegetation spectrum in the region. The natural community is a dominant formation.The Abies-Tsuga and Picea-Tsuga formations occur with...