Method for estimating biomass and net production of forest vegetation from stem volume of stand was proposed in this paper, and biological production all over China was estimated by using this methed. As a result, average biomass was smaller, and mean net preduction was higher in China than mean values of the world. Total biomass in Chinese forest vegetation was 9102. 9 × 106 t, of which 8592. 1 × 106 t for stands, 325. 7 × 106 t for economic forest, 185. 0 × 106 t for bamboo forests and 790. 5 × 10' t for ...