A Study on Biomass of New Aigeiros Clones in the Short-rotation Management

The biomass of five-year-old 84 individuals from a short-rotation experimental plantation of new aigeiros clones was studied. It's shown that the biomass of an individual tree decreased with the increase in density of the plantation, while the biomass of the plantation increased with the increase in the density. Plantation density was still a major factor influencing biomass of the five-year-old plantation. Another important factor that had an effect on biomass was clones. There was a significant difference among clones. Clones 366 and 351 were apparently superior to clone 69 that had been used as a control, with clone 366 performing best. Management also had a significant influence on biomass of both individual trees and the plantation. Intensive management was necessary for short-rotation cultivation. A regression model has been established on the basis of tree height and DBH for biomass estimation of both branches and stems.