摘要
子午岭林区计有种子植物94科361属689种.其中裸子植物3科8属10种1变种;被子植物91科353属678种.中国特有属8个,特有种271个,子午岭特有种1个.其种子植物区系的基本特征是:植物种类相对丰富;区系成分复杂,多种成分交汇;区系组成以华北成分为主体,以温带成分占优势;南北区系成分存在差异,垂直分布带谱不明显;在中国植物区系上隶属于泛北极植物区中国-日本森林植物亚区的华北地区黄土高原植物亚地区.
Ziwuling forest region ,is situated in 107°30′～109°40′E and 33°50′～36°50′N in the east Gansu. There are 689 species of seed plants in the Ziwuling Forest Region, belonging to 361 genera and 94 families. Among them, 11 species, belonging to 8 genera and 3 families,are of gymnosperm and 678 species, belonging to 353 genera and 91 families, are of angiosperm. In addition, there are 8 Chinese endemic genera,271 endemic species and 1 endemic species of the Ziwuling. The characteristics of the seed plants flora are as follows: It is comparatively rich in species, complex in floristic components, with diversified components mingled together. The flora is mainly made up of the North China components, dominant in the temperate. The northern flora is different from the southern one, but there is no evident distinction in the dangling flora. The flora of the Ziwuling belongs to a Subregion in the North China Region in the Japan-China Forest plant Subkingdom in the Holarctic Kingdom in Chinese Flora.
出处
《西北植物学报》
CAS
CSCD
2004年第2期267-274,共8页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家973项目 2002CB111502
陇东学院重点资助项目 Sznk0222
关键词
种子植物
区系特征
子午岭
seed plants flora
characteristics of the flora
Ziwuling
