In recent years, much attention has been paid to soil respiration due to its important role in the carbon cycle of terrestrial ecosystems. Five treatments involving a) both litter and root exclusion, b) only litter exclusion, c) a control, d) only root exclusion and e) litter addition were applied to analyze the relationship between changes of carbon input and soil respiration. In addition, soil temperature and moisture effects were studied in a Pinus tabulaeformis plantation. The results showed that there were similar respiration curve with seasons in different treatments. The average soil respiration rates for the treatments a) to e) were 1.54, 1.71, 2.71, 2.47 and 3.39 μmol m^-2 s^-1, respectively. On average, the soil respiration was significantly decreased by both litter and root exclusion, about (44.27±2.31)% lower than the control. The soil respiration rate with only litter exclusion was (36.03±2.64)% and with only root exclusion was (10.76±3.26)% lower than the control. However, the soil respiration rates with only root exclusion were higher than those of the control for 1—2 months after trenching. The soil respiration rates in late June and mid-July were 25.91% and 0.29% higher than those of the control. When the data of June and July were removed, only root exclusion decreased soil respiration by about 21.90%. Soil respiration was significantly increased by litter addition, about (21.01 ± 3.21)% higher than the control. The Q₁₀ values were increased in the treatments of only root exclusion (2.32) and litter addition (3.10) relative to the control (2.23), whereas, these values were decreased in the treatments of both litter and root exclusion (1.75) and only litter exclusion (1.65). The relationships between soil respiration and soil temperature at 5 cm depth could be described by an exponential equation, with a determination coefficient (R²) of 0.41, 0.45, 0.57, 0.64 and 0.73, respectively for the treatments a) to e), respectively. There was no significant correlation between soil respiration and soil moisture at 5 cm depth. In order to predict both the soil moisture and soil temperature dependency four two-variable linear/non-linear models were developed and evaluated. By use of those models it was possible to predict the soil respiration as a function of both temperature and moisture, with R² values ranging from 0.49 to 0.83.