SOMM is a simulation model of soil organic matter mineralization, humification
and nutrient release.
The model takes into account the rate of the processes depending on litter fall's nitrogen and ash content, temperature and moisture. The functioning of the main groups of soil destructors is reflected in the model.
The model represents a system of linear differential equations with variable coefficients.
The model has been verified on a basis of independent data of short-term laboratory and field experiments. The results of the simulation show the applicability of SOMM for a wide range of environmental conditions from tundra to tropical rain forest. The model can be used for modelling soil system and natural ecosystems' dynamics mostly.
SOMM is used as the soil sub model with the EFIMOD individual-based tree/soil model of North European forest ecosystems.
Chertov O.G., Komarov A.S., G. Crocker, P. Grace, J. Klir, M. Körschens, P.R. Poulton, D. Richter. 1997. Simulating trends of soil organic carbon in seven long-term experiments using the SOMM model of the humus types. Special Issue: evaluation and comparison of soil organic matter models. Geoderma. 1997, 81: 1-2, 121-135; 24 ref..
Smith P.(ed.), Smith J.U.(ed.), Powlson D.S. (ed.), Arah J.R.M., Chertov O.G., Komarov, A.S. et al. 1997. A comparison of the performance of nine soil organic matter models using datasets from seven long-term experiments. Special Issue: evaluation and comparison of soil organic matter models.Geoderma. 1997, 81: 1-2, 153-225; 78 ref..
Chertov O.G., Komarov A.S. 1996. Model of soil organic matter and nitrogen dynamics in natural ecosystems. In: D.S.Powlson, P.Smith & J.U.Smith, Eds. Evaluation of Soil Organic Matter Models Using Existing Long-Term Datasets. NATO ASI Vol. I 38, Springer-Verlag, Heidelberg: 231-236. In English.
Chertov O.G., Komarov A.S. 1996.Model of soil organic matter dynamics. Gerald of St.-Petersburg University. Ser. biol.(3), No 1. In Russian with English summary.
Chertov O.G., Komarov A.S. 1995. On Mathematical Theory of Soil Forming Processes. Pushchino Res. Center of Russian Acad. Sci., Pushchino. Preprint. 43 p. In English.
Chertov O.G. (submitted) Estimation of soil organic matter pool in forests of St.-Petersburg region, Russia. In: Harmon M., Krankina O., Eds. Comperison of Carbon Pools and Sequestration in forests of US Pacific and Russian Northwest. Oxford Acad. Press. 17 p.