Abstract: On the basis of field vegetation survey, the species composition, floristic characteristics, endangered protection and economic value of lycophytes and ferns in Dawangling Nature Reserve, Guangxi were sorted out and analyzed according to PPG I classification system. The results showed that there were 28 families, 66 genera and 148 species of lycophytes and ferns in the reserve, the dominant families and genera were obvious and it was dominated by single species families and genera, with relatively ancient origin and relatively coherent evolutionary system; the analysis of floristic geographical components showed that the tropics and subtropics were dominant at the level of families, genus and species, and the R/T value of the genus was 8.8, showing the tropical element, and there was a significant difference with the adjacent areas. There were 8 species of lycophytes and ferns under second-class national protection and 4 species of vulnerable species under IUCN list. There were many species with high utilization value, which was mainly medicinal value.

Key words: Dawangling Nature Reserve, lycophyte and fern, flora analysis, distribution type

摘要： 在野外植被调查的基础上，基于PPG I分类系统对广西大王岭自然保护区石松类和蕨类植物的物种组成、区系特点、濒危保护和经济价值等进行分析。结果表明，大王岭自然保护区内石松类和蕨类植物共28科66属148种，优势科属明显且以单种科、属为主，起源较为古老，在进化上比较连贯；植物区系地理在科、属、种水平均以热带和亚热带成分占绝对优势，属的R/T值为8.8，主要为热带成分，且与邻近地区存在较大差异。保护区内石松类和蕨类植物中，有国家二级保护物种8种和IUCN名录易危物种4种，高利用价值种类较多，以药用为主。

关键词: 大王岭保护区, 石松类和蕨类植物, 区系分析, 分布区类型