摘要
在调查天华山自然保护区植物组成的基础上,对该区的蕨类植物区系进行了分析。天华山自然保护区共有蕨类植物24科48属111种(包括种下类群),其区系的基本特征是:①种类丰富,种系密度大;②优势科明显,大部分科内属、种贫乏;③地理成分多样,区系联系广泛;④温带性质显著,与热带蕨类植物区系有一定的亲缘关系;⑤南北过渡性明显;⑥区系具有一定古老性;⑦特有化程度高,有51个中国特有种,以西南、华中和华北成分为主,并有1个中国特有属。另外,在中国特有种中有9个陕西(秦岭)特有种。
Pteridophyte floras in Tianhuashan Natural Reserve were studied according by investigating its plant composition of the reserve. Tianhuashan Natural Reserve totally has 111 species （including infraspecific taxa）,48 genera and 24 families and the characteristics of its flora are that ①they have rich species and high species densities,② they have obvious dominant families and most of their families lack genera and species,③ they have diverse geographical components and were widely related,④ they show significant typical tropical features and have something to do with tropical peridophytes in genetic blood,⑤ they present transitional characteristics from south to north,⑥ they are of antiquity to some extent and ⑦ they are highly endemic ,containing 51 Chinese endemic species mainly composed of the components from southwest China, central China and North China, and one Chinese endemic genus, and the Chinese endemic species include nine species endemic in Shaanxi province.
出处
《西北植物学报》
CAS
CSCD
北大核心
2006年第3期592-598,共7页
Acta Botanica Boreali-Occidentalia Sinica
基金
大熊猫国际合作项目
国家林业局专项基金项目
关键词
蕨类植物
区系组成
区系特征
天华山自然保护区
pteridophyte
flora composition
flora characteristic
Tianhuashan Natural Reserve
