Spatial distribution of the biomass of Vaccinium uliginosum community under Larix olgensis forests in Changbai Mountains,Northeast China

An investigation was conducted on the below-and above-ground biomass and its spatial distribution of Vaccinium uliginosum community under Larix olgensis forests in Changbai Mountains.The above-ground biomass of the V.uliginosum community was mainly distributed below the height of 50 cm,and the biomass of the branches with a diameter of 3-5 mm occupied the largest portion.The below-ground biomass accounted for 75.2%-92.6% of the total,and was mainly(66.3%-85.0%) distributed in dead moss layer where the biomass of fine roots(1 mm) accounted for 42.6%-82.7% of the total.In peat layer,the root biomass accounted for 12.3%-29.7% of the total.The root biomass of V.uliginosum accounted for 8.8%-60.7% of the total root biomass of all plant species,and the fine root biomass of V.uliginosum occupied a great portion.This study provided basis for the rational protection and utilization of V.uliginosum resources and the evaluation of the carbon sequestration of the ecosystem.