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ECOSIMP2 model: Prediction of CO2 concentration changes and carbon status in closed ecosystems

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Nov 1994Publisher:Elsevier BVJournal:Advances in Space Research, volume 14, pages 323-326 (issn: 0273-1177,

Authors: J. Thiéry; Marcel Andre; L. Cournac;

doi: 10.1016/0273-1177(94)90316-6

pmid: 11540200

ECOSIMP2 model: Prediction of CO2 concentration changes and carbon status in closed ecosystems

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Abstract

The ECOSIMP2 model, simulating the Plant-Soil-Atmosphere interactions, was developed as a tool for the management of an experimental artificial ecosystem. It consists in three main carbon compartments for production, consumption and decomposition of the biomass. The main biological parameters concern photosynthesis (apparent Km, CO2 compensation point), the harvest index, the rate of consumption, and the kinetics of litter decomposition. From realistic assumptions of kinetics of soil compartments, a steady-state case was obtained, simulating a terrestrial ecosystem. The stability of the atmospheric CO2 concentration was studied after a virtual enclosure of the system in a 20-m high greenhouse. In natural lighting the conditions of stability are severe because of the small size of the atmospheric compartment which amplifies any imbalance between carbon fluxes. The positive consequence of that amplification for research on artificial ecosystems was emphasized.

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Keywords

Atmosphere, Plant Development, Carbon Dioxide, Plants, Environment, Controlled, Models, Biological, Soil, Computer Simulation, Biomass, Photosynthesis, Ecological Systems, Closed, Software

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