Spatio-temporal patterns of Q(10) values for improved modelling of heterotrophic soil respiration (B03)

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The Community Land Model (CLM) as part of TerrSysMP assumes a fixed temperature dependency of heterotrophic soil respiration. Our findings indicate, however, a variable temperature dependency as a function of texture, porosity, moisture, and nutrient status of the soil. We plan to scale the influence of these factors in relation to land-use and soil unit. We will test the found relations for selected parts of the Rur catchment using proximal and remote soil sensing, backed up by lab-based mid-infrared spectroscopy and soil incubations with our RESPICOND system. Potential improvements will be implemented in CLM.