In this study，biomass，photosynthetic rate，soil respiration and carbon storage of different successional stages of dark coniferous forest in Gongga Mountain were measured。Then we calculated net primary productivity (NPP) and net ecosystem productivity (NEP)，and analyzed the carbon pool of different forest ecosystems。The results indicated that Abies fabri mature forest showed obvious carbon sink function，followed by mixed forest，and cutover land showed obvious carbon source function。Climate warming will exacerbate soil respiration in cutover land，thus may influence the carbon sink function of dark coniferous forest in Gongga Mountain。
NETL
