Evergreen broad-leaved forest is vitally important for the stability of ecosystem and balanced biodiversity because of its complex structure, species abundance and significant effect on improving microclimate. We surveyed the biomass of evergreen broad-leaved ecological public-welfare forests in Zhejiang Province based on five regression models, up to 61.48 t/hm~2 in 10～25a forests and 145.88 t/hm~2 in 26～50a forests, with tendency of linear increase within 50 years. Species-specific aboveground biomass reg...