摘要
在实地考察和标本采集鉴定的基础上,对平天山种子植物区系进行统计分析。结果表明,(1)平天山维管植物种类丰富,有野生维管植物181科583属981种(含变种及亚种)。其中蕨类植物34科59属103种;种子植物147科524属878种,含裸子植物6科6属8种,被子植物141科518属870种。(2)植被区系地理成分复杂,以热带-亚热带成分占优势,热带性质与温带性质属数之比(即R/T)为2.90。(3)以菊科、禾本科、蝶形花科、大戟科、樟科、茜草科占优势;有4种国家重点保护植物,列入CSRL的植物有5种,列入CITES保护植物有7种。(4)起源古老,孑遗植物丰富。与大明山、岑王老山、大瑶山和十万大山4个区系的相似系数均高于50%。
Based on field survey and specimen identification, the flora of seed plants in Pingtian Mountain in Guangxi was analyzed. The results indicated that ： 1 ） The flora of Pingtian Mountain was rich. There were 181 fam- ilies, 583 genera, 981 species （including varieties and subspecies）. Of all the plants, there were 878 seed plant species, belonging to 524 genera and 147 families; 103 fern species, belonging to 59 genera and 34 families; 8 gymnosperm species, belonging to 6 genera and 6 families; 870 angiosperm species, belonging to 518 genera and 141 families. 2） The geographical composition was complicated, the components of tropical and subtropical were dominant, the R/T value of tropical to temperate was 2. 90. 3 ） There were some key protected plants in Pingtian mountain, including 4 national key protected wild species, 5 CSRL species and 7 CITES species. 4） The origin of the flora was ancient, with rich relic plant species, the similarity coefficients between Pingtian Mountain with Da- ming Mountain, Chenwanglao Mountain, Dayao Mountain and Shiwandashan Mountain were all higher than 50%.
出处
《西部林业科学》
CAS
北大核心
2012年第3期24-30,共7页
Journal of West China Forestry Science
基金
国家林业局基金项目(LY-09-03)
广西林业科学研究院基金项目(林科201206)
