This study investigated the increasing seasonal soil respiration (R_s) in the Dahurian Larch (Larix gmelinii) forests after fire disturbance in the Tahe area, and identified the main environmental factors influencing soil respiration changes after fires. Plots that had been under fire disturbance over four years in the Tahe forestry bureau were selected for this investigation, and the nearby unburnt area was selected for the control plots. The R_s was measured by using an Li-8100, and the trench method was used to measure the soil heterotrophic respiration (R_h). The mean R_s of post-fire plots and unburnt control plots was (3.67±1.03)μmol CO₂ m^-2 s^-1 and (4.21±1.25)μmol CO₂ m^-2 s^-1, respectively. The R_s in the post-fire plots was significantly lower than that in the unburnt control plots (P < 0.05). We quantified the R_s component changes after fire disturbance. The decrease in R_s was mainly due to a significantly decreased autotrophic respiration (R_a) rate (P < 0.05). Soil temperature was the dominant environmental factor influencing soil respiration variability in this area. Compared with the unburnt control plots, the R_s in the post-fire plots had a much stronger correlation with soil temperature. The temperature sensitivity index (Q₁₀) of R_s in the post-fire plots and unburnt control plots was 5.85±1.06 and 4.25±1.19, respectively. The Q₁₀ value significantly increased after fire disturbance (P < 0.05). In view of the global climate change, the results of this study demonstrate that the Dahurian Larch (L. gmelinii) forest ecosystem in the Tahe area of China is sensitive to temperature change. Our findings provide scientific basis for research on carbon cycling after fire disturbance in the Tahe area of China.