Multi-scale analysis of plant species diversity of Oak (Quercus liaotungensis) forest at Dongling Mountain, Beijing Spatial distribution and beta diversity of forest communities in mountainous areas of the West Lake in Hangzhou, East China Beta diversity of forest community on Dinghushan Additive partition of species diversity across multiple spatial scales in community culturally protected forests and non-culturally protected forests Beta diversity of wetland vegetation in the middle and upper reaches of the Fenhe River watershed Beta diversity of plant communities in Baishanzu Nature Reserve