关键词: 蕨类植物, 优势, 区系成分, 分布区类型, 井冈山自然保护区

Abstract: On the basic of field investigations and referring to related data, the flora of pteridophytes in Jinggangshan Nature Reserve was studied in this paper.The results indicate:1)The pteridophytes species is rich in this Nature Reserve, with 304 species of pteridophytes of 101 genera in 44 families;2)Results of statistic analysis reveals that, in this flora, the dominant families are these:Dryopteridaceae, Polypodiaceae, Athyriaceae and Thelypteridaceae;The dominant genera are these:Dryopteris, Asplenium, Arachniodes, Peris and Phanerophlebiopsis;3)The areal-types of family are 7, which are all tropic elements.Among these elements, the pan-tropical ones, tropic-Asia & tropical-African and tropical-Asia ones are the main ones, they each occupy 66. 67%、12.12%and 12.12%of the total families;4)The flora of genera with compound floristic elements.There are 14 areal-types, among these elements, the tropical ones among which the pan-tropic and tropical-Asia ones are the main ones, occupy 68.54%of the total and the temperate ones whose key elements are the North Temperate and Eastern-Asia ones occupy 25.84%.In terms of the floristic zone, the flora in Jinggangshan is a transitional type between the East-China and South-China areas;5)The results got through the methods of clustering and PCA between this flora and that in some others indicate:The flora here shows a close relation with those of Lushan, Wuyishan and Tianmushan;6)The pteridophytes resources in Jinggangshan have upper exploitation and using value.They can be divided to 5 types, including directions plants, medicine plants, edible plants, view and admire plants, and industry plants.

Key words: pteridophytes, superiority, flora elements, distribution-type, Jinggangshan Nature Reserve