1. General Model Information
Name: Frissel and van Veen Model
Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: 1D, compartment model
Keywords: nitrogen, carbon, organic matter, transformation, mineralization, immobilization, multi-layer soil model
This model is not maintained as a computer program anymore. For information about a modern descendant, MOSOM, please contact:
Dr. A.P. Whitmore
Research Institute for Agrobiology and Soil Fertility (AB-DLO)
9750AC Haren (Gr.)
Fax : +31.50.5337291
Frissel, M.J.; van Veen, J.A.
Frissel and van Veen (1981) developed an N transformation model based on four stages of
organic matter transformation. The stages used in the model are :
The model was based on the assumption that SOM can be represented by several carbon and
nitrogen pools. The biomass growth rate was controlled by the carbon availability
from the added soil pool, and it was assumed that there was no change in the microbial population if no
carbon was added to the soil. Nitrogen immobilization was proportional to biomass growth and it was assumed
that mineralization occured simultaneously and independently of immobilization.
The authors used the C/N ratio to characterize mineralization and immobilization.
They assumed that if the C/N ratio was less than 20 to 30, then net mineralization occurs;
otherwise, net immobilization occurs.
- (1) C/N ratio controls mineralization and immobilization.
- (2) Consideration was made for differences in decomposition rates of organic
compounds in plant residues for amino acids, cellulose, lignin fractions and microbial mass
(in this stage the authors assumed that the organic matter decomposition is controlled by C uptake by the
biomass rather than the C/N ratio).
- (3) N transformations were incorporated into a multi-layer soil model.
- (4) Soil organic matter (SOM) fractions were incorporated into the C and N pool.
(from: Donigan, A.S. et al. 1994 : Assessment of alternative management practices and policies affecting soil carbon
in agroecosystems of the Central United States. P.33.)
II. Technical Information
III. Mathematical Information
Donigan, A.S. et al. 1994 : Assessment of alternative management practices and policies affectingsoil carbon in agroecosystems of the Central United States. Frissel, M.J.; van Veen, J.A.; 1981 : Simulation model for nitrogen immobilization andmineralization. In : Modelling Wastewater Renovation by Land Disposal. I.K. Iskandar(ed.) John Wiley et al., New York, P. 359-381. Van Veen, J.A.; Paul, E.A.; 1981 : Organic carbon dynamics in grassland soils.1. Background information and computer simulation. Ca. J. Soil Science (61), P. 185-201.
V. Further information in the World-Wide-Web
- - not available - - for a modern descendant of this model, see:
- MOSOM by VAN VEEN and others 1990
VI. Additional remarks
Last review of this document by: Tobias Gabele: 10. 6. 1997 -
Status of the document:
last modified by
Tobias Gabele Wed Aug 21 21:44:43 CEST 2002