Biomass Allocation Patterns and Allometric Models of Two Dominant Tree Species in Broad-leaved and Korean Pine Mixed Forest

Abstract

To better understand biomass and carbon storage of the broadleaf and Korean pine mixed forest,this paper analyzed the above-and belowground biomass of two dominant tree species Korean pine(Pinus koraiensis) and linden(Tilia amurensis) with harvest method along different diameter order.Biomass allometric models for each organ of the two species were established with diameter at breast height(DBH),tree height(H) and diameter-height(D2H).The results showed the whole plant biomass variation range of 11 Korean pine trees was 6.99-1165.30 kg for each tree,the biomass relative percentage of leaf,branch,stem and root as 6.54%,18.33%,53.14% and 21.99%,respectively.The total biomass variation range of 10 linden trees was 10.83-1004.31 kg for each tree,the relative ratio of leaf,branch,stem,and root biomass being 1.80%,16.21%,56.39% and 25.60%,respectively.There was a significant and linear relationship between the aboveground biomass and underground biomass for both species(P 0.001).The model coefficient of Korean pine and linden was 0.30 and 0.27,respectively.The models based on DBH for each organ biomass of Korean pine and linden could explain more than 96% and 90% in data respectively.On the other hand,the interpretation of models with H as a variable was low.The prediction accuracy of biomass models with D2H as a variable was not significantly higher than that of others.Considering the interpretation and significance of regression coefficient models,DBH is a reliable variable to establish biomass model for each organ of the two species.