岑王老山自然保护区药用种子植物区系分析

Floristic analysis on medicinal seed plants in Cenwanglaoshan Natural Reserve

岑王老山自然保护区共分布有野生药用种子植物147科561属1003种（包括种以下分类单位）,是保护区种子植物区系的重要组成部分。分析表明：保护区药用种子植物区系的优势科明显,15种以上的科有15科,共含209属423种,虽然只占总科数的10.20%,但占总属数的37.25%和总种数的42.17%。属的组成复杂,含1-5种的属共542属,占总属数的96.61%。分布区类型多样,与世界各地联系广泛,科的分布区类型可划分为11类,其中热带分布85科,占总科数的70.83%,温带分布34科,占28.33%,中国特有分布1科,占0.83%;属的分布区类型可划分为15类,其中热带分布362属,占总属数的69.34%,温带分布153属,占29.31%,中国特有分布7属,占1.34%。同保护区种子植物区系的地理成分非常相似,以热带成分为主。

There are 147 families, 561 genera and 1 003 species （including subspecies） of wild medicinal seed plants in Cenwanglaoshan Natural Reserve, which acts an important component of the seed plant flora of the Reserve. Based on the analysis of the basic composition and geographical dements of the medicinal seed plant flora, there are some conclusions as follows： The dominant families are distinct and there are 15 families with more than 15 species, including 209 genera and 423 species. Although they account for only 10.20 % in total families, they account for 37.25 % and 42.17 % in total genera and total species, respectively. The genus composition is complex. The genera with 1- 5 species are 542 genera and account for 96.61% in total genera. The flora has wide relationship with the other regions in the word and the areal types of the flora are various. At the family level, the areal types can be divided into 11 kinds, in which the tropic one has 85 families accounting for 70.83 % in total families; the temperate one accounts for 28.33% of the total families with 34 families; the element of endemic to China has 1 family, accounting for 0.83 % in total families. The genera can be divided into 15 areal types, in which the tropic one with 362 genera accounting for 69.34 % in total genera; the temperate one have 153 genera, accounting for 29.31% in total genera; the China-endemic accounts 1.34% in total genera with 7 genera. The geographical dements of the flora and the seed plant flora of the Reserve are very similar, in which the tropic one is dominant.