黔东南州珍稀濒危植物区系特征研究

摘要

cording to Red Book of Plants in China(Vol.1) and National Important Wild Conservative Plants List(List 1),which were issued by the State Council in 1999,there are 32 families,51 genera,and 58 species of rare and endangered plants in Qiandongnan prefecture.In this paper,growth-type and floristic characteristics of these seed plants were reinvestigated and analyzed.The results showed that: 1)18 genera are of tropical and 18 genera are temperate,each accounting for 37.5% of the total generic number,showing obvious temperate floristic characteristics;2) 11 genera are endemic to China,accounting for 23.0% of the total,characterized by ancient origin and obvious endemism.%根据《中国植物红皮书》（第一册）和1999年国务院批准公布的《国家重点保护野生植物名录（第一批）》统计,黔东南州有国家保护珍稀濒危植物共计32科51属58种,文章对上述珍稀濒危植物的生活型及种子植物的区系成分特征进行了调查和分析,结果表明：该区分布的48属珍稀濒危种子植物中,热带分布型和温带分布型各有18属,分别占总属数的37.5%,其植物区系具有明显的温带性质;中国特有分布型11属,占总属数的23.0%,具有特有性强、起源古老的特征。