Minimum sampling area and species richness of riparian community in Erdaobaihe forested watershed Comparative Study of Monitoring Methods about Plant Diversity and Aboveground Biomass of Alpine Grasslands in the Tibetan Plateau Determination of the minimum sampling area for Pinus massoniana quercus community and comparion of sampling methods Determination of the Minimum Sampling Area for Mid-subtropical Evergreen Broad-leaf Forest (Castanopsis carlesii Forest) in Fujian Province,China Woody plants species-area relationships in a broad-leaved Korean pine forest in the Xiaoxing‘an Mountains Determination of species-area relationships and minimum sampling area for the shrub communities in arid valley in the upper reach of the Minjiang River