Abstract:The plant communities in Daqinggou Nature Reserve were divided into 6 types according to their sere by the sampling method. They are Carex spp. (Community Ⅰ), Salix spp. (Community Ⅱ), Betula ovalifolia + Salix integra + Acer ginnala (Community Ⅲ), Fraxinus mandshurica (Community Ⅳ), Quercus mongolica (Community Ⅴ) and Ulmus macrocarpa (Community Ⅵ). In every plant community, the synthetic indices including relative density, relative abundance and relative biomass of macrofun...