子午岭自然保护区藓类植物区系分析

Floristic analysis of mosses in Ziwuling Nature Reserve

分析陕西子午岭自然保护区藓类植物区系组成及分布类型。采用野外采集和室内鉴定的方法。发现子午岭自然保护区共有藓类植物15科41属92种(包括1变种、1变型),其中青藓科、丛藓科、真藓科、羽藓科以及绢藓科5个科为优势科;青藓属、扭口藓属、绢藓属、羽藓属、牛舌藓属、真藓属6个属为优势属,同时具有较多的科中仅1属和属中仅1种的类群。该保护区区系的地理成分中,北温带成分占绝对优势,东亚成分第二,中国特有分布位于第三。区系成分较为丰富,具备华北区藓类植物的典型特征,具有强烈的北温带性质,兼有多种成分。也体现出该区藓类植物区系南北过渡和东西交汇的特征。是陕西省境内一个区系地理成分较为复杂的地区。

To study the composition and distribution types of mosses in Ziwuling Nature Reserve of Shaanxi. Based on the field acquisition and laboratory identification, the distribution types of Moss in Ziwuling Nature Reserve are analyzed. 92 species, 41 genera,15 families of mosses are discovered （including 1 varieties, 1 form） in the Reserve. Brachytheciaceae, Pottiaceae, Bryaceae, Thuidiaceae, Entodontaceae are the represent- ative families. Brachythecium, Barbula, Entodon, Thuidium, Anomodon, Bryum are the dominant genera. Single species in one genus and single genus in one family are rich. North temperate element is absolute ad- vantage in the geographical elements of moss flora, the second one is East Asia element, and the third one is Endemic to China element in the total area. The floristic elements are not only more abundant, but also have the typital characteristics of the Northern Region mosses and a strong nature of the North temperate zone in Zi- wuling Nature Reserve. The multi-component also reflects the transition characteristics from north to south and from east to west. It is a more complex area of geographical element in Shaanxi Province.