阿尔金山国家级自然保护区的对齿藓属(Didymodon Hedw.)植物调查

在野外调查和采集标本的基础上,对阿尔金山国家级自然保护区对齿藓属植物的分类、区系地理成分和垂直分布进行研究。结果表明:该保护区的对齿藓属植物共计19种,共发现新疆新记录种7种。从种的区系地理成分水平上将其可划分为世界广布成分、北温带成分(占比38%)、旧世界温带成分(占比11%)、东亚-北美间断分布成分(占比27%)、中国特有成分(占比22%),表现出明显的北温带和东亚-北美间断分布成分,并且中国特有成分占有重要地位;垂直分布可划分为高山荒漠带(10种)、山地荒漠带(11种)、高寒草原带(12种)、高山草甸带(4种)、高山稀疏植被带(1种)。文中对该保护区对齿藓属植物的形态特征及其在该保护区的分布进行了描述,并编制了该保护区对齿藓属植物的分种检索表。

Didymodon Hedw. in Altun Mountain National Nature Reserve in Xinjiang,China

With Didymodon in Altun Mountain National Nature Reserve, the experiment was conducted to study the classification and floristic composition. There are 19 species of Didymodon in the reserve including 7 species are new records to Xinjiang. According to Floristic and geographical composition, They can be divided into Cosmopolitans, North temperate elements(proportion 38%), Old World temperate elements(proportion 11%), East Asia-North American temperate elements(proportion 27%), Endemic to China(proportion 22%);Chinese endemic components are prominent in this discontinuous distribution pattern of North Temperate Zone and East Asia-North America. By vertical distribution they can be divided into alpine desert zone(10 species), mountain desert zone(11 species), alpine grassland zone(12 species), alpine meadow zone(4 species), alpine sparse zone(1 species). The morphological characteristics were outlined, presenting the distribution in the reserve.