Abstract: In this paper, the biomass and net production of Picea koraiensis artificial forestsof Suiting, Heilonajiang Province are measured and studied According to the "averagestandard tree", the biomass, net production and its distribution of the trunk, bark, branch, leaf e and root of the Picea koraiensis artifical forests of 6-31 years old areanalysed. The regression equation for the estimation of the dry weight of each organis founded by the dimension analysis. The relative coefficient of equation and themeasurement precision are high. The results shows: with the increase in age. thebiomass of Picea koraiensis artificial forests increase. At the age of 31 years old.the average biomass of forest is 151. 13t. hm^-2, The net production doesn't relatewith the age. Usually, at the age of 30 years old, the net production is 11-14t. hm^-2. a^-1 Thus, the community of Picea koraiensis artificial forests possesseshigh biological production.

Key words: Picea koraiensis, Artificial forests, Tree layer, Biomass, Net production