云南石林地区石灰岩山地种子植物区系成分的研究

云南石林是我国为数不多的世界地质公园。分析了云南石林地区石灰岩山地植物区系从科到种的 组成特征。调查统计分析的植物共有维管植物147科533属889种,其中种子植物占133科508属846种。 种子植物科级区系成分中,以亚热带科为主,暖温带科次之。属级区系成分中,热带分布属占优势,占总属数 的56．2％,温带分布属也占近三分之一,这表明该植物区系的过渡性即亚热带性质。在其种级区系组成中,中 国特有种有328种,占总种数的40％,其次是东亚分布种和热带亚洲分布种。石林石灰岩山地种子植物区系, 从科到种的组成都充分说明了该植物区系的亚热带性质及组成上的独特性。

The floristic elements of seed plants in stone forest limestone region, Yunnan Province

The stone-forest limestone region in Yunnan Province is one of the eight UNESCO Geoparks in China. The floristic elements of send plants based on families to species in the stone-forest region were analyzed in this paper. In the region there were 889 plant species,belonging to 533 genera and 147 families,of which 846 species of 508 genera were seed plants in 133 families. On the family level of the flora, the subtropical elements occupied the superlority,and the temperate families took second place. In the genus level of floristic elements, the tropical genera were the most and the temperate ones accounted for about one third of all genera. This in- dicated the distinct subtropical character of this flora. In the species level of this flora, there were 328 endemic species of China,occupying 40M, then, East Asia and Tropical Asia species were the most. From family to species,the seed plant flora of the stone-forest region had the natures of subtropical and typical elements.