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对新疆准噶尔盆地沙漠南缘土壤生物结皮中地衣种类及分布特征进行了初步研究。结果表明,该地区参与土壤生物结皮的有藓生双缘衣〔D iploschistes muscorum(Schreb.)Norm.〕、拟橙衣〔Fulgensia bracteata(Hoffm.)Raws.〕、丽石黄衣〔Xanthoria elegans(L ink)Th.Fr〕、准噶尔橙衣(Caloplaca songoricumA.Abbas)和磷网衣〔Psoradecipiens(Ehrh.)Hoffm.〕等13种地衣,分别属于5目10科。对其分布特征进行了分析,发现地衣的分布与苔藓有相关性;地衣的分布受到环境温度、太阳辐射强度和降水量等因素的影响。聚类分析结果表明,24个样方可分为3组,分别分布于沙丘底部、顶部和中部,其中分布于沙丘底部的样方地衣种类的多样性最高。
The species and distribution of lichen in the soil biological crusts in the southern desert of Junggar Basin in Xinjiang were studied. The results showed that there were two species of soil crusts (D iploschistes muscorum (Schreb.) Norm.), Fulgensia bracteata (Hoffm.) Raws., Xanthoria elegans 13 species of lichen such as L ink Th.Fr, Caloplaca songoricumA.Abbas and Psoradecipiens (Ehrh.) Hoffm., Belonging to 5 orders and 10 families, respectively. The distribution characteristics of lichens were analyzed. The distribution of lichens was found to be related to moss. The distribution of lichens was affected by environmental temperature, solar radiation intensity and precipitation. Cluster analysis showed that the 24 quadrats could be divided into three groups, which distributed in the bottom, top and middle of the dune, respectively. Among them, the diversity of the quadrats distributed in the bottom of the dunes was the highest.