赣江源自然保护区蕨类植物区系研究

Pteridophyte flora of Ganjiangyuan Nature Reserve

在野外调查与分类研究的基础上,对江西赣江源自然保护区蕨类植物资源进行了区系分析。结果表明:该区有蕨类植物216种隶属于35科75属,科、属、种各占江西省蕨类植物科总数的71.4%、属的65.8%、种的49.9%。含7个种以上的科有9个;科的分布区类型中热带和亚热带分布的科占74.3%。属的分布区类型有10个,其中热带分布类型有51属,占总属数的68%;温带分布类型的属有4属,占总属数的5.3%。种的地理分布可划分为4个类型,其中热带成分35.6%、亚热带成分49.1%、中国特有成分达13.4%。种的相似性分析表明,本区系与齐云山关系密切,相似性系数达75.1%。

Based on the investigation and data access,the floristic analysis of pteridophyte in Ganjiangyuan Nature Reserve was studied. The results indicated that in this area there were 216 species of ferns belonging to 75 genera in 35families,and the ratio of these families,genera and species accounting for the total number of ferns in Jiangxi Province was 71. 4%,65. 8% and 49. 9%,respectively. The number of families containing more than seven species was 9,and the families in tropical and subtropical distribution accounted for 74. 3% in the family areal types. The number of the genus areal types was 10. The tropical distribution type had 51 genera,which accounted for 68% of the total genera,while the temperate distribution type had 4 genera,which accounted for 5% of the total genera. The geographic distribution of species can be divided into four types,including 35. 6% ingredients,49. 1% subtropical elements and about 13. 4% unique components of China. The species similarity analysis showed that this flora and Qiyunshan were closely related,and the similarity coefficient was 75. 1%.