喀喇昆仑山-西昆仑山苔藓植物区系及物种多样性

Bryoflora and Species Diversity of Bryophytes from Karakorum-West Korum Area in Xinjiang

对喀喇昆仑山—西昆仑山苔藓植物区系成分进行了划分,并对该区系与邻近9个地区的地理成分进行了聚类分析。经查阅有关资料和标本鉴定,确定新疆喀喇昆仑山共有苔藓植物32科、76属、178种(含5变种),其中苔类为7科、8属、11种,藓类25科、68属、167种。喀喇昆仑山—西昆仑山苔藓植物区系成分可划分为10种类型,其中北温带成分居主导地位,占该地区苔藓植物总种数的71.81%,东亚成分次之,占8.85%,热带成分甚微。地理成分区系谱及聚类分析结果表明,新疆喀喇昆仑山—西昆仑山与东部天山苔藓植物区系关系最为接近,与贺兰山密切相关。对喀喇昆仑山—西昆仑山10个样点中苔藓植物多样性指数的分析结果表明,西合休和果萨斯苔藓植物分布较丰富。

We determined bryophytes areas in Karakorum-West Korum area,and analyzed the geographical elements by cluster analysis. After detailed examination,we determined 32 families,76 genera and 178 species（ including 5 varieties） of bryophytes. Among them,7 families,8 genera and 11 species are liverworts,and 25 families,68 genera and 167 species are mosses. The moss floristic element of Karakorum-West Korum area was divided into 10. Among them,the flora was dominated by North Temperate Zone types corresponding to 71.81% of the total,followed by East-Asian elements accounting for8.85%,and the tropical element was little. By cluster analysis of ten regions,Karakorum-Westkorum area had the closest relatives of flora with Eastern Tianshan Mountain,and bryophytes flora of Karakorum-Westkorum area was closely associated with Helan Mountain. Ten samples in Karakorum-Westkorum of bryophyte species diversity index analysis showed that in Shihshu and Gosas the distribution of bryophytes are most abundant.