Abstract: With investigation and analysis of the geographical elements of Machilus versicolora community in Mangdangshan Nature Reserve of Fujian province, the results show that there are 195 species of seed plants in 134 genera and 74 families belonging to 9 families and 13 genera of areal types.The community is dominated obviously by tropical geographical elements with 86 genera and 45 families, respectively 80.4% and 68.8% out of the family and genera of total seed plants.Among them, pantropical distribution (33 families, 32 genera) dominates in geographical elements with 58.9% of families and 25.6% of genera.Temperate distribution includes 11 families and 37 genera, respectively occupying 19.6 percent and 29.6 percent.The community put up those features that species are rich, geographical elements are complex, tropical elements are obvious, temperate elements are plentiful, the origin of flora is ancient and also existing lots of endemic elements.

Key words: Machilus versicolora, community, geographical elements, seed plants, Mangdangshan

摘要： 对福建茫荡山黄枝润楠群落进行调查分析。结果表明,该群落现有种子植物74科134属195种,隶属9个科分布区类型和13个属分布区类型。该群落区系的热带地理成分占优势,共计45科86属,分别占该群落种子植物科、属数的80.4%和68.8%(不含世界分布,下同),其中,成分最多的是泛热带分布(33科,32属),占该群落种子植物科、属数的58.9%和25.6%。温带分布成分共计11科37属,分别占种子植物科、属数的19.6%和29.6%。体现了该群落植物种类丰富、地理成分复杂、热带成分明显、温带成分较多、起源古老和特有成分较多的特点。

关键词: 黄枝润楠, 群落, 地理成分, 种子植物, 茫荡山