杭州西湖山区次生植被性质研究(一)

杭州西湖山区的现状次生植被是在亚热带北部季风气候与人类干扰的综合作用下孕育的较为特殊的植被类型。在群落的种类组成上具有较强的过渡性质,反映了南北植物区系交汇的基本特点;植物区系的现状地理分布组合特征,在显示现状植被由亚热带向暖温带过渡性质的同时,体现了更为强烈的北亚热带植物区系的特点。

Characteristics of Vegetation on Hills and Lower Mountains in Vicinity of West Lake in Hangzhou(I)

This paper describes the environmental conditions under which the vegetation is located and proposes that the present evergreen, summergreen and coniferous mixed forest is a characteristic vegetation type which has developed under the northern subtropical climatic and soil conditions. According to the notes taken from 132 plots, the floristic composition of the vegetation consists of 465 species, which belong to 109 families and 315 genera. The dominants of community are not obvious concentrated on a few genera and families, most genera only containing one species. It indicates that this place is an overlapping region of the southen and northern flora. In addition, the present geographical elements of flora in the vegetation are analysed. It shows that they have transitional properties between subtropical and warm-temperate flora. It also reflects that there are more characters of northern subtropical flora in the vegetation.