新疆和田昆仑山区苔藓植物的初步研究

APreliminary Investigation of the Bryoflora of the Kunlun Mountain Area,Hotan,Xinjiang

报道了新疆和田南部山区昆仑山中段的苔藓植物共计４０种１变种１变型，它们隶属于１５属６科．其中的缺齿藓属Ｍｉｅｌｉｃｈｈｏｆｅｒｉａ为新疆新记录属，狭叶墙藓Ｔｏｒｔｕｌａｃｅｒｎｕａ等２０种为新疆新记录种．该地区苔藓植被的主要特点是：１．从区系组成来看，全部由藓类组成，其中以真藓科、丛藓科和柳叶藓科的植物占优势；尚未有苔类及角苔类植物的发现．２．从群落分布来看，主要是水边土生、干旱土生及水中岩面生的群落为主，尚未发现腐木生及干旱岩面生的群落，类型较单调．３．从生活型来看，以直立垫状丛生的种类为主（约占总种数的８０％），而匍匐的种类仅占２０％．

The mountain area of Hotan Prefecture is situated in the middle section of the Kunlun Mountains,which are generally about 6000 metres above sea level.Located in a warm temperature zone and the hinterland of Eurasia,the Prefecture is dominated by a dry continental climate. In the present study,the authors have identified more than 300 specimens of bryophytes,all of which were collected by the first two authors from the Mountain area during the past three investigations from 1991 to 1996.According to this preliminary research,42 species including one variety and one form of Musci belonging to 6 families and 15 genera are reported from the Kunlun mountain area,Hotan,Xinjiang.Among them,one genus,Mielichhoferia Nees et Hornsch.and 20 species are new records in Xinjiang.The superior families are Bryaceae,Pottiaceae and Amblystegiaceae in the species number.Based on the research above,the communities of bryophytes on the area are also discussed in brief.In addition,a list of mosses on the area is presented in this paper.