Interrelation between Plant Species Diversity and Soil Factors in the Middle and Lower Reaches of Fenhe River Classification, species diversity, and species distribution gradient of permafrost wetland plant communities in Great Xing’an Mountains valleys of Northeast China. Quantitative Classification and Ordination of Plant Vegetation in the Bosten Lake Wetlands Spatial pattern of forest communities and environmental interpretation in Mulun National Nature Reserve, karst cluster-peak depression region