Saxicolous macrolichen communities characteristics in the Barluk Mountain National Nature Reserve Xinjiang, China

Subjects: Biology >> Botany >> Applied botany submitted time 2024-12-15 Cooperative journals: 《广西植物》

TOKSUN Dolathan MAMATALI Rehanguli YONG Haiying TUMUR Anwar

Abstract： In this paper in order to investigate the characteristics of saxicolous macrolichen communities and the relation between species distribution and environmental factors in Barluk Mountain National Nature Reserve, the two way indicator species analysis (TWINSPAN) was used to numerical classification of community and canonical correspondence analysis(CCA) was used to analysis the relations between the species distribution and environmental factors. The results were as follows：（1）There are 30 saxicolous macrolichen (including 2 varieties) belong to 6 families and 14 genera were distributed in this nature reserve, among them Parmeliaceae, Physciaceae and Verrucariaceae were dominant families have 25 species, accounting 83.3% of total macrolichen species.（2）The saxicolous macrolichen communities were classified into 5 association according to TWINSPAN analysis result. Association 1: Dermatocarpon moulinsii + Dermatocarpon miniatum var. Imbricatum + Dermatocarpon arnoldianum; Association 2: Umbilicaria virginis + Physcia caesia; Association 3: Xanthoparmelia somloensis + Xanthoparmelia wyomingica; Association 4: Umbilicaria aprina + Phaeophyscia ciliata; Association 5: Physcia phaea + Melanelia stygia. （3） The α diversity index shows that association 3 has the highest diversity, while association 5 has the lowest diversity; the β diversity index between association is relatively low.（4）The CCA ordination result shows that, environmental factors such as altitude, slope, human disturbance, and rock size have a significant impact on the distribution of saxicolous macrolichen species, while air relative humidity and the acidity and pH of rocks have no significant impact on lichens; the aspect and light intensity are negatively correlated with the distribution of saxicolous macrolichens. Comprehensive analysis shows that the structure of the saxicolous macrolichen community in the protected area is complex, and the distribution of lichen species is influenced by both natural and human factors. There is no significant difference in lichen species between different altitudes.

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