摘要
在野外调查及查阅资料的基础上,对宜黄华南虎自然保护区的蕨类植物区系进行了分析。结果表明:自然保护区内共有蕨类植物170种,隶属于30科70属,优势科有7科,分别为鳞毛蕨科、水龙骨科、金星蕨科、蹄盖蕨科、铁角蕨科、卷柏科和凤尾蕨科。根据植物的现代地理分布,在本植物区系的13个分布类型(剔除世界分布)中,热带性属共40属,占总属数57.14%。热带性属以泛热带分布和热带亚洲分布型属为主,分别占热带性总属数的40.00%和27.50%,表明其属的地理成分复杂,具有明显的热带性质和丰富的温带成分。自然保护区内保存有许多珍稀濒危蕨类植物,如鳞毛蕨科的鞭叶蕨和紫萁科的华南紫萁等,这些物种均具有较高的科研价值和经济利用价值,应采取措施加强保护。
Based on the field investigation and reference collection,the floristic analysis of Pteridophytes in South China tigers in nature reserve was conducted. The fern flora was composed of 170 species from 70 genera and 30 families. The species- rich families were Dryopteridaceae,Polypodiaceae,Thelypteridaceae,Selaginellaceae,Athyriaceae,Aspleniaceae and Pteridaceae. According to the modern distribution in plants,there were 40 tropical genera in the 13 flora distribution types that excluding the world distribution,accounted for 57. 14% of the total number of genera. The dominant species of tropical genera were the Pantropical distribution type and the tropical Asian distribution type,which was 40% and 27. 5% of the total number of genera. The results showed that the geography of genus composition is complicated,had obvious tropical nature and abundant temperate components. There were many rare and endangered fern in the nature reserve,for example,Cyrtomidictyum lepidocaulon and Osmunda vachellii Etc,which should be taken to strengthen the protection because these plant had high research value and economic value.
出处
《江西化工》
2015年第6期81-83,共3页
Jiangxi Chemical Industry
关键词
蕨类
区系分析
保护区
宜黄
Pteridophytes Floristic analysis Naturereserve Yihuang
