MIOR : an individual-based model for simulating the spatial patterns of soil organic matter microbial decomposition

Dominique Masse; Christophe Cambier; Alain Brauman; Saïdou Sall; Komi Assigbetse; Jean-Luc Chotte

MIOR : an individual-based model for simulating the spatial patterns of soil organic matter microbial decomposition

Dominique Masse ^{1, *} Christophe Cambier ^{2, 3} Alain Brauman ¹ Saïdou Sall ¹ Komi Assigbetse ¹ Jean-Luc Chotte ¹

* Corresponding author

1 SEQBIO - Séquestration du carbone et bio- fonctionnement des sols : effets des modes de gestion des agro-écosystèmes tropicaux

2 GEODES - Modélisation mathématique et informatique de systèmes complexes naturels, biologiques ou sociaux

3 OASIS - Objets et Agents pour Systèmes d'Information et Simulation

LIP6 - Laboratoire d'Informatique de Paris 6

Abstract : An individual-based model, called MIOR, was designed to assess hypotheses on the effect of the spatial distribution of organic matter and microbial decomposers on soil carbon and nitrogen dynamics. Two main types of object were defined to represent the decomposers and the soil organic substrates. All these objects were positioned in a 3D space. The exchange of carbon and nitrogen between these various entities was simulated. Two scenarios were tested according to the degrees of clustering of organic matter and of microorganisms. The results of simulations highlighted the effect of the ratio of accessible organic carbon to microbial carbon on the dynamics of microbial biomass and CO2 release. This ratio was determined by the number of contacts between one object representing the microbial decomposers and the surrounding objects representing the organic substrates.

Document type :

Journal articles

Domain :

Life Sciences [q-bio] / Agricultural sciences

Complete list of metadatas

https://hal.ird.fr/ird-00190929
Contributor : Dominique Masse <>
Submitted on : Friday, November 23, 2007 - 11:39:51 AM
Last modification on : Monday, July 1, 2019 - 2:58:06 PM
Long-term archiving on : Monday, April 12, 2010 - 4:47:56 AM

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