贵州独山县琴阳自然保护区苔藓植物资源的调查

Investigation on Bryophyte Resource in Qinyang Nature Reserve in Dushan County of Guizhou Province

为丰富贵州苔藓植物资料,并为该地区的苔藓植物生物多样性保护提供理论依据,对贵州琴阳自然保护区407份苔藓植物标本进行了整理和鉴定。结果表明:该地区苔藓植物共有38科81属204种(包括亚种和变种),其中,有5个贵州新纪录种;优势科10个,分别为光萼苔科、耳叶苔科、细鳞苔科、地钱科、丛藓科、羽藓科、灰藓科、蔓藓科、平藓科和青藓科;优势属9个,分别为光萼苔属、耳叶苔属、细鳞苔属、地钱属、羽藓属、匐灯藓属、青藓属、凤尾藓属和绢藓属。根据各科、属的地理分布状况可知,琴阳自然保护区苔藓植物既有温带成分,又有热带和亚热带成分,在优势科、属、种水平上,该地区苔藓植物都处于由温带向热带过渡的中心带上。

To enrich the bryophyte resource in Guizhou Province and provide the theoretical basis for this region to protect the bryophyte biodiversity, 407 bryophyte specimens from Qinyang Nature Reserve were collected and carefully identified. It was found that there were 204 species （including subspecies and variation） which belonged to 81 genera in 38 families. And five of them were newly recorded in Guizhou. According to the checklist, There were ten dominant families（Porellaceae, Frullaniaceae, Lejeuneaceae, Marchantiaceae, Pottiaceae, Thuidiaceae, Hypnaceae, Meteoriaceae, Neckeraceae and Brachytheciaceae） and nine dominant genera （ Porella, Frullania, Lejeunea, Marchantia, Thuidium, Plagiomnium, Brachythecium, Fissidens and Fissidens）. The geographical distribution of various families and genera showed that the bryophytes in Qinyang Nature Reserve not only had temperate components, but also tropic and subtropical components. The bryophyte were all distributed on the centre transition zone from temperate zone to tropic zone no matter at which level of dominant families, genera or species.