浙江大山峰蕨类植物区系的研究

Fern Flora in Dashanfeng Mountain of Zhejiang Province

在野外调查和整理资料的基础上,大山峰共有蕨类植物33科58属98种和2变种.优势科为鳞毛蕨科、水龙骨科、蹄盖蕨科,优势属为鳞毛蕨属、卷柏属和复叶耳蕨属.通过对区系组成、性质和特征的分析,表明该区地理成分复杂多样,分布区类型以泛热带分布属、东亚分布种为主,表现出亚热带向暖温带过渡的特点;区系综合系数为-0.290,在相比较的8个山地区系中位居第6;在区系关系上,该区系与天目山、三清山、武夷山区系关系密切,可以归入同一自然区,而与帽儿山区系关系疏远.

It is shown by field survey and data analysis that Dashanfeng Mountain has 98 species and 2 variants, 58 genera and 33 families of ferns. Its dominant families are Dryopteridaceae, Polypodiaceae and Athyriaceae, and its dominant genera are Dryopteris, Selaginella and Arachniodes. The analysis of its flora composition, nature and characteristics indicates that it is complex and diverse in its geographical elements and its areal types are mainly pantropic and East Asia ones, and present the transitional characteristics from subtropical areal to warm temperate areal; the composite index of its florae is -0. 290 and ranks the sixth among those of the eight mountainous florae under comparison; its florae are closely associated with those in Tianmushan Mountian; Sanqingshan Mountain and Wuyishan Mountain , and thus can be classified into the same natural flora category as them ; but they are distant from those in Maoershan Mountain.