Abstract: The dynamic changes of soil organic carbon components and its influential factors were investigated through setting fertilizer plots in typical bamboo (Phylostachys pubescens) forests in Yuhang, Hangzhou. There were three treatments including Control (CK), site-specific nutrient management (SSNM), and farmers’ fertilizer practice (FFP). During one year study period, the content of soil dissolved organic carbon (DOC) ranged from 102.5 mg/kg to 200.2 mg/kg, and the content of microbial biomass carbon ranged from 150.8 mg/kg to 431.3 mg/kg. Soil DOC was significantly higher in autumn and winter than in spring and summer （p=0.0203）, while microbial biomass carbon (MBC) in winter was significantly lower than that in Autumn. Compared with CK, content of DOC and MBC in FFP were reduced by 13.3% and 14%. The results also showed that the release quantity of soil respiration was slight higher in FFP than in CK. SSNM treatment reduced the soil CO2 annual emission amount.