1. General Model Information

Name: Fallow Production Model

Acronym: FAPROM

Main medium: terrestrial
Main subject: biogeochemistry, population dynamics, agriculture
Organization level: Organ, Organism
Type of model: individual based, static-algebraic equations, ordinary differential equations
Main application: research, simulation/optimisation tool, decision support/expert system
Keywords: carbon, light, nitrogen, plant competition, old-field succession


Laboratoire d'Ecologie, Systématique, Evolution Université Paris-Sud, Orsay,

email: yann.martineau@m4x.org




FAPROM is a mechanistic model of plant succession that simulates the growth of natural vegetation during long fallow periods in traditional cropping systems of the high tropical Andes. The vegetation is described as a multilayer mixture of species in competition for light and soil nitrogen. In each layer leaves are randomly distributed. The model predicts growth and biomass production of each species, and takes into account carbon and nitrogen cycling through plants and soil. It uses a daily time-step with meteorological data as forcing variables. It considers six species with four organs: leaves, stems, seeds and roots. It simulates photosynthesis; growth and maintenance respiration; assimilates allocation; nitrogen uptake, fixation and remobilisation; tissues mortality; and, seed dispersion and germination.

II. Technical Information

II.1 Executables:

Operating System(s): WINDOWS

II.2 Source-code:

Programming Language(s): VENSIM

II.3 Manuals:

II.4 Data:

Ecophysiological parameters such as leaf mass per area, nitrogen concentrations, turn-over rates, photosynthetic light response curves, specific root lenght ...

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

V. Further information in the World-Wide-Web

VI. Additional remarks

Last review of this document by: : Mon May 10 18:06:04 2004
Status of the document: Contributed by Yann MARTINEAU
last modified by Joachim Benz Tue May 11 18:13:29 CEST 2004

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