Species Diversity of Ground-Dwelling Macrolichens and Their Ecological Indicator Values in the Baluruk Moun-tain National Nature Reserve
In the Baluruk Mountain National Nature Reserve,47 plots of 20 m×20 m were established across different elevation gradients(deciduous forest zone,coniferous forest zone,grassland zone,and subalpine zone).Specimen samples were collected from 24 plots where ground-dwelling macrolichens were present.For each collection point,geographic coordi-nates,elevation,and other relevant information were recorded,and the lichen species were identified.Based on existing research,ecological indicator values for ground-dwelling macrolichens were designed,including elevation gradient value,light indicator value,humidity indicator value,substrate pH indicator value,soil nutrient indicator value,eutrophication indicator value,growth form indicator value,photobiont type indicator value,reproductive strategy indicator value,air pol-lution tolerance indicator value,distribution frequency indicator value,and endangered species indicator value.The α-di-versity index was used to analyze the diversity of ground-dwelling macrolichens in the study area,while the β-diversity in-dex was applied to compare the differences in macrolichen species among different sampling sites,analyzing the turnover rates of macrolichens across different vegetation zones(patterns of macrolichen variation along the elevation gradient).The results showed that a total of 41 species of ground-dwelling macrolichens were identified in the Baluruk Mountain Nature Reserve,belonging to 3 orders,5 families,and 11 genera,with species from the genera Peltigera and Cladonia being dominant,accounting for 65.9%of the total macrolichen species in the region.The α-diversity index ranked from highest to lowest was as follows:deciduous forest zone,coniferous forest zone,and subalpine meadow zone.The β-diversity index indicated a high turnover rate of macrolichen species between the deciduous forest zone and the grassland zone,with lower species similarity,whereas the species turnover rate between the coniferous forest zone and the subalpine meadow was rela-tively low,indicating greater species similarity.An analysis of the habitat indicator values,life history strategy indicator values,tolerance,and distribution indicator values for the 41 macrolichen species revealed that ground-dwelling macroli-chens predominantly occur in moderately elevated,relatively moist,and acidic habitats,with sexual reproduction being the primary mode of reproduction.
万方数据
维普
