Different Dynamics of Biomass of Artificial Mixed Coniferous & Broadleaved Trees with Mixed Proportion

Investigations on biomass of mixed coniferous broadleaved trees cultivated in Eighties in the 20th century shows that : biomass of Pinus koraiensis broadleaved mixed forest is 4.9%-21% higher than that of Pinus koraiensis pure forest;biomass of broadleaved mixed forest of larch is 7.6%-21.3% higher than that of pure forest of larch;per plant biomass of Pinus koraiensis broadleaved mixed forest is 120%-148% higher than that of pure forest of Pinus koraiensis;biomass of broadleaved mixed pure forest of larch per plant is 108%-151% higher than that of pure forest of larch;among different mixed-types,species of plant is rich and quantity of plant is large in shrub herb layer,so their biomass are greater than that of pure forest.