1. General Model Information

Name: Fire Succession Model

Acronym: FIRESUM

Main medium: terrestrial
Main subject: biogeochemistry, forestry
Organization level:
Type of model: not specified
Main application: research
Keywords: forest, long-term stand dynamics, tree growth, fire


Bob Keane
USDA Forest Service
Intermountain Research Station
PO Box 8089
MT 59807
Fax : 406-329-4877



Fire Succession Model (FIRESUM) is a deterministic ecosystem process model that simulates long-term stand dynamics of forests in the Northern Rocky Mountains. The model simulates tree regeneration, growth and mortality given stochastic fire events. In the model, individual trees are grown deterministically using an annual time step. Tree growth is affected by light, water and nutrients. Fuel loadings are calculated annually and fire is simulated by reducing litter, duff, and down woody fuels. The model simulates forest stand dynamics.

The model requires species parameters as input as well as site parameters, such as weather, elevation, and soil characteristics. Output includes the average basal area for each tree species simulated, fuel values of forest components and fire behavior statistics.

Author of the abstract:


A Model Data Needs Assessment Report CIESIN

II. Technical Information

II.1 Executables:

Operating System(s):

II.2 Source-code:

Programming Language(s): FORTRAN (C++ version may be available in the future)

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

By Keane, R.E., Arno, S.F., Brown, J.K., 1989. USDA ForestService Intermountain Research Station General Technical Report INT-266FIRESUM - An ecological Process Model for Fire Succession in Western Conifer Forests, September.

V. Further information in the World-Wide-Web

VI. Additional remarks

In a climate scenario involving dryer climates in the Rocky Mountains, this model could be useful in examining the effects of increased fire due tothe drier climate.
Last review of this document by: R. Patzak : 16. September 1997 -
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:42 CEST 2002

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