毕节阳山森林公园蕨类植物区系研究

Studies on Flora Pteridophyta in Yangshan Mountains National Forest Park of Bijie

通过野外考察,标本采集、整理、鉴定,得出毕节阳山森林公园共有蕨类植物27科50属107种,其中优势科为鳞毛蕨科、蹄盖蕨科、水龙骨科和金星蕨科,优势属为鳞毛蕨属、蹄盖蕨属、凤尾蕨属、铁角蕨属。从该区蕨类植物科、属分布类型的所占比例可知,热带成分在该地区占优势,热带分布科有14科,占总科数的87.50%(世界分布除外,下同);热带分布属有30属,占总属数的81.08%;从种分布区类型的所占比例来看,则温带成分在该地区占优势,温带性分布有85种,占总种数的85%,特别是中国特有分布、东亚分布和中国-日本分布类型的种较多,温带性质明显。

Through fieldwork, specimen collection, sorting, identification, access to literature obtained the fern list at Yangshan forest park in Bijie, which is helpful to future analysis of composition of ferns and flora characteristics. The results show that there are 27 families, 50 genera and 107 species at Yangshan forest park in Bijie. The dominant families are Dryopteridaceae, Athyriaceae, Polypodiaceae, Thelypteridaceae and the prominent genera are Dryopteris, Athyrium, Pteris and Asplenium. We can know that tropical elements have advantages in this region from the proportion of the distribution of types of ferns in the area families and genera. There are 14 families tropical sub-buko, which is accounted for 87.50percent of the number of total subjects. （Except for world distribution, the same below） . Tropical distribution is 30 genera, which is accounted for 81.80percent. From the proportion of the species distribution type, temperate elements have advantages in this region. Temperate distribution is 85percent, which accounted for 85 percent of the total species Especially unique to China, the East Asia and China- Japan distribution type more, subtropical to warm temperate obviously.