CARBON BALANCE OF LARIX GMELINI FOREST AND IMPACTS OF MANAGEMENT PRACTICES
兴安落叶松林碳平衡及管理活动影响研究 （英文）

We applied CENTURY model (version 4.0) to simulate the impacts of forestry management practices on the carbon (C) balance of L. gmelini (Dahurian larch) forest. The model was validated using the observed data of L. gmelini forest ecosystem. The results indicated that L. gmelini forest served as a net C sink of about 2.65 t*hm-2*a-1 at present. Forest felling decreased the gross plant biomass and NPP while increased soil C content. When the harvesting rate was increased, the magnitude of the change (increase or decrease) of the forest gross plant biomass, NPP and soil C content increased and more time was required for its restoration. Annually removal of litter decreased the soil C content and increased the gross plant biomass of L. gmelini forest. NPP increased in the first 10 years and then decreased gradually. After 100 years, it was close to the NPP of the forest without litter removal. There were no significant differences among the impacts of different removal intensities.