摘要
采用查阅资料和样线与样方调查相结合的方法,对保靖县白云山蕨类植物区系的地理成分进行了研究。结果表明:白云山蕨类植物有45科106属396种。其中大部分科属于泛热带分布,约占总科数的55.56%,大部分属为热带分布约占总属数的49.06%。在所有科内,以鳞毛蕨科、蹄盖蕨科和水龙骨科为优势科;在所有属内,以鳞毛蕨属、耳蕨属和铁角蕨属为常见属,共87种,占总种数的21.96%。基于属的组成,本区系可归属于"耳蕨-鳞毛蕨植物区系"。
The geographic components of fern flora in Baiyun Mountain of Baojing County were studied through data access combining with the line transect and quadrat surveys. The results showed that, there were 396 species of ferns belonging to 45 families, 106 gene- ra. In these ferns, the majority of families were pantropic distribution which accounted for 55.56% of the total family number, and the majority of genera were tropic distribution which accounted for 49.06% of the total genus number. Among the families, Dryopteridace- ae, Athyriaceae and Polypodiaceae were the dominant family. Among the genera, Dryopteris, Polystichum and Asplenium were the com- mon genus, which included 87 species accounting for 21.96% of the total number of species in the region. Based on the composition of genus, the fern flora in the region could be attributed to the Polys^ichum-Dryopteris flora.
出处
《湖南林业科技》
2013年第1期53-56,103,共5页
Hunan Forestry Science & Technology
