The Community Structure and Carbon Density of Abies Plantation in Qiaoqi Town of Baoxing County

After investigating Abies fabri plantations in Baoxing, analysis was made of their community structure, biomass,productivity and carbon density. The result showed that 1) The Abies fabri plantation accounted for 51.7% of the tolal forest, the Picea asperata plantation accounted for 31.1%, therefore, belonging mixed the Abies fabri and Picea asperata forest; 2) the arerage height of tree layer was 16.6 metres. 3) the important value of Abies fabri was 47.92, which was the largest of the entire tree layer.; 4) Abies forest's NPP was 14.02 t·hm^-2·a^-1, higher than other Abies forests in Sichuan; 5) the Abies fabri plantation's carbon density (437.7373 t·hm^-2) was little different compared to the average nationwide carbon density (463.59 t·hm^-2), but the proportion of soil carbon density was small.