1. General Model Information

Name: Frissel and van Veen Model

Acronym: FRISSEL

Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: 1D, compartment model
Main application:
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)
P.O.Box 129
9750AC Haren (Gr.)
Phone: +31.50.5337303
Fax : +31.50.5337291
email: a.p.whitmore@ab.dlo.nl


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.

(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

II.1 Executables:

Operating System(s):

II.2 Source-code:

Programming Language(s):

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

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

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

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