北京东灵山主要森林植被中苔藓植物的物种多样性

通过对北京东灵山地区32个样地植被及苔藓植物的调查,对主要森林植被中苔藓植物物种多样性进行分析。结果表明:东灵山主要森林植被中共有苔藓植物16科33属79种,优势科为青藓科(Brachytheciaceae)和绢藓科(Entodontaceae)等。密叶绢藓(Entodoncompressus)、小牛舌藓(Anomodon minor)等为优势种。地面生苔藓植物物种丰富度以落叶阔叶混交林中最大,白桦林中最小,苔藓植物群落相似性以辽东栎林与落叶阔叶林之间最高,以山杨林与油松林之间最低。树附生苔藓植物物种丰富度以落叶阔叶混交林中最大,油松林中最小;苔藓植物群落相似性以油松林和山杨林之间最高,华北落叶松林与白桦林之间最低。地面生和树附生苔藓植物多样性与林型、树种及其所形成的林内微环境相关。

Bryophyte species diversity in main forest vegetations in Dongling Mountain of Beijing

An investigation was made on the vegetations and bryophytes in 32 sampling plots to study the species diversity of bryophytes in main forest vegetations in Dongling Mountain of Beijing.There were 79 species of bryophytes belonging to 33 genera and 16 families.Brachytheciaceae and Entodontaceae were the dominant families,and Entodon compressus and Anomodon minor were the dominant species.The species richness of the floor bryophytes was the highest under deciduous broadleaved mixed forest,and the lowest under birch forest.The community similarity of the floor bryophytes was the highest between Quercus liaotungensis forest and deciduous broadleaved mixed forest,and the lowest between Populus davidiana forest and Pinus tabulaeformis forest.The species richness of the epiphytic bryophytes was the highest under deciduous broadleaved mixed forest,and the lowest under P.tabulaeformis forest.The community similarity of epiphytic bryophytes was the highest between P.tabulaeformis forest and P.davidiana forest,and the lowest between Larix principis forest and birch forest.The biodiversity of bryophytes was correlated with forest vegetation,tree component,and microenvironment in the forests.