[Objective] The seasonal variation characteristics of soil respiration rates beneath typical slope-stabilizing Cynodon dactylon cover and their response patterns to critical environmental factors were clarified, and the environmental response properties of soil carbon release processes associated with C. dactylon while excluding the influence of complex hydrological processes were revealed, in order to provide a process-based basis for assessing its ecological advantages in slope stabilization and its possible carbon sequestration capabilities. [Methods] Based on an outdoor experimental site, continuous studies of the soil respiration rate of C. dactylon during its growing season（April to November） were undertaken using devices including the 3051T soil respiration system, an automatic weather station, and soil sensors. Environmental factors, including air temperature/humidity, soil temperature/humidity, atmospheric CO₂ concentration, and rainfall, were monitored simultaneously. Multi-temporal scale analysis and Pearson correlation analysis were applied to investigate the regulatory effects of these factors on soil respiration. [Results] ① Under C. dactylon coverage, soil respiration rates exhibited significant seasonal variations during the growing season, generally peaking in summer, followed by spring, and reaching their lowest levels in autumn. The peak value reached 4.16 μmol/（m²·s） in summer, while autumn values fluctuated between 1.08 and 1.82 μmol/（m²·s）. Diurnal variations followed either unimodal or bimodal patterns across different months.② Correlation analysis showed that soil respiration rates were significantly positively correlated with both air and soil temperatures（p<0.01）. Conversely, they showed a significant negative correlation with soil moisture（p<0.01） and atmospheric CO₂ concentration（p<0.05）, while the correlation with air humidity was not significant.③ The response of soil respiration rates to temperature was non-linear, with an inhibitory effect observed under high-temperature conditions.④ Within 72 hours of rainfall, soil respiration rates were generally lower than those of the non-rainfall control group. On the first day after rainfall, soil respiration rates in the experimental group ranged from 0.51 to 1.02 μmol/（m²·s）, significantly lower than the control group's 1.14 to 1.51 μmol/（m²·s）. [Conclusion] Soil respiration in C. dactylon systems is primarily driven by temperature. However, the limitation of carbon source supply caused by pre-observation defoliation treatments offsets the promoting effect of high temperatures. Soil moisture and rainfall restrict carbon release mainly by regulating soil aeration. The observed negative correlation between soil respiration rates and atmospheric CO₂ concentration is an apparent phenomenon rather than a direct causal link. The dense coverage of C. dactylon effectively buffers environmental disturbances, and its carbon release process is the result of the synergistic effects of vegetation physiological characteristics and environmental factors.