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A soil–plant–air continuum multilayer model was developed to simulate soil respiration. The model can be used to investigate the effects of three canopy characteristics on soil thermal and hydrological properties and soil respiration: leaf area index, the maximum rate of carboxylation, and the vertical profile of leaf area density. The model did not consider physiological effects of canopy characteristics, such as the effect of photosynthesis on root respiration. Rather, it examined how changes in temperature and moisture in the soil layers, caused by changes in the plant canopy, affect soil respiration. Model validation and numerical experiments were performed using above-canopy hydrometeorological variables, including seasonal changes related to a dry season with strong evaporative demand (high solar radiation and high temperature) and a rainy season with weaker evaporative demand. The results suggest that …