西藏珍稀濒危植物区系特征及其保护

西藏是我国乃至世界上生物多样性最丰富和最典型的地区之一,拥有较多的珍稀濒危植物。综合《中国植物红皮书》(第一册)和《国家重点保护野生植物名录》(第一批),西藏有珍稀濒危植物33科48属54种,在对其区系成分进行统计分析的基础上,探讨了其区系成分特点及地理分布特征,结果表明,西藏珍稀濒危植物具有区系地理成分复杂多样,温带性质较热带性质明显,特有属少而特有种类较多,水平和垂直分布不均匀等特征。提出了进一步加强珍稀濒危植物保护的意见。

The Floristic Features and Conservation of the Rare and Endangered Plants in Tibet

Tibet is considered as one of the most abundant and typical regions an bio-diversity both in China and in the world. There are richer rare and endangered plants in Tibet. According to the red book of Chinese plants (Vol. 1) and the national important wild conservative plants list (List 1) which was issued by the State Council in August of 1999, there are 33 families, 48 genera, 54 species of rare and endangered plants in Tibet. Based on detailed floristic statistics, the floristic elements and the geographical distribution are analyzed in this paper. The results have shown that the floristic elements have such features as complicated geographical elements, obvious temperate nature, rich endemic species but poor genera, and uneven geographical distribution. In addition, some proposals for protecting the resources are put forward on basis of the present situation.