贵州六冲河下游苔藓植物的鉴定及分类

Identification and taxonomy of the Bryophytes at the lower reaches of the Liuchong river

对贵州六冲河下游苔藓植物标本430余号进行鉴定、分析,其共有38科,78属,132种和2变种。结合该地区地貌特点和植被类型,将六冲河下游苔藓植物划分为喀斯特灌木林苔藓植物、喀斯特森林苔藓植物、喀斯特草丛裸岩苔藓植物、喀斯特洞穴苔藓植物和喀斯特湿生苔藓植物5种主要生态分布类型。与本地区有联系的地理成分划分为五大类:泛北极成分、古热带成分、世界广布成分、中国特有成分和其他成分,其中泛北极成分占主导地位。

From about 430 bryophyte specimens collected from lower reaches of Liuchong river Guizhou province, Southwest China,38 families,78 genera, 132 species and 2 varieties of bryophates had been found,of which ecological types and floristic elements were analyzed. The Karst shrub bryophates, Karst forest bryophytes, Karst meadow and rocky bryo-phytes,Karst cave bryophytes and moist Karst bryophytes are recognized by the authors. The floristic elements of the bryophytes in lower reaches of Liuchong river are north temperate elements, paleotropical elements, Chinese endemic elements, world widely distributed elements and the other elements of the bryophytes in this region. The main one is the north temperate element, which contains about half of the total bryophytes there.