贵州龙头大山自然保护区苔藓植物研究

Bryoflora Germplasm in Mountain Longtou Natural Reserve of Guizhou Province

通过对贵州省龙头大山苔藓植物物种组成及区系进行研究,结果表明:该区苔藓植物资源非常丰富,共有45科93属181种(包括亚种、变种及贵州省1个新纪录种),而且单种科、单种属在植物组成中占比例较大,分别占总科数的57.78%、总属数的58.06%;区系成分复杂,分布交错,可划为13种类型。其中,以温带成分和东亚成分为主,分别占26%和23.2%,热带成分和中国特有也占一定的比例,分别为18.23%和10.5%。

The species and flora of bryophyte in Mountain Longtou Natural Reserve of Guizhou Province was investigated in the present work.The results showed that a total of 181 species,which belongs to 93 genera and 45 families（including subspecies,variation and one newly recorded species in Guizhou）,were obtained.Interestingly,oligotypic families and oligotypic genera consisted of larger proportion in the families and genera,which accounted for about 57.78%of the whole families and 58.06%of the whole genera.Based on the analysis of geographic elements of species,the geographical elements are complex,13 type of the bryoflora in this region were recognized.Geophytia and Petrophytia are dominant,accounting for about 26% and 23.2%,respectively.The proportion of the tropical elements and that endemic to China were 18.23% and 10.5%,respectively.