广东郁南同乐大山自然保护区种子植物区系研究

Floristic Analysis of Seed Plants in Tongledashan Nature Reserve in Yunan，Guangdong Province

摘要:

通过野外调查与查阅资料，广东郁南同乐大山自然保护区共有野生种子植物149科542属1 002种。种子植物区系组成丰富，区系地理成分复杂，以南亚热带和热带北缘植物区系地理成分为主。区内珍稀濒危植物多，特有现象较明显，植物区系起源古老。与其它邻近地区植物区系相比较，同乐大山自然保护区种子植物区系与广西龙虎山自然保护区、广东黑石顶自然保护区的相似性较高，与湖南武陵源的相似性较低。

Abstract:

A floristic study of the Tongledashan Nature Reserve in Yunan County, Guangdong Province, China was carried out. The seed plants are found to be abundant in this area, represented by 1 002 species belonging to 542 genera in 149 families. This flora, composed mainly of phytogeographical elements from the northern border of the Chinese southern subtropical and tropical regions, is characterized by rich floristic components and complex phytogeographical elements. In addition, there are a plenty of rare, endangered, and endemic species in this area, indicating the ancient origin of this flora. Compared with its neighbouring floras, the flora of the Tongledashan Nature Reserve is closely related to those of Longhushan Nature Reserve in Guangxi, and Heishiding Nature Reserve in Guangdong，but only distantly related to that of the Wulingyuan Nature Reserve in Hunan.