Impact of anthropogenic and climatic changes on biomass and diversity of the Central African forests, from local to global scale: original methods for new results

Mortier Frédéric, Gourlet-Fleury Sylvie, Ouédraogo Dakis-Yaoba, Picard Nicolas, Rossi Vivien. 2014. Impact of anthropogenic and climatic changes on biomass and diversity of the Central African forests, from local to global scale: original methods for new results. Geophysical Research Abstracts, 16, Résumé, 1 p. European Geosciences Union General Assembly, Vienne, Autriche, 27 Avril 2014/2 Mai 2014.

http://meetingorganizer.copernicus.org/EGU2014/EGU2014-16554.pdf

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Résumé : Forests of the Congo Basin, the second most important remaining block of tropical moist forest in the world, are facing increasing anthropogenic pressure and climate change. Understanding the biomass and diversity dynamics under these pressures is one major challenge for African nations and international communities. This talk aims to present original methods to model, infer, and predict growth, biomass and diversity of Central African forests, as well as new results on the impacts of global change on those forests, at various scales. With respect to methods, we will present theoretical frameworks allowing (i) to model growth processes in species-rich ecosystems like tropical rain forests, (ii) to take into account uncertainties in biomass estimation. In terms of results, we will highlight at a local scale, how human activities as well as climatic variations would impact (i) the composition and diversity of forests, (ii) the dynamics of biomass and growth processes. At a global scale, we will demonstrate how environmental filtering controls the above ground biomass. The number of studies are currently increasing over the Congo Basin through several research projects led by our team (CoForTips, DynAfFor) and contributing to various international organization's programs (Cifor, FAO, Comifac, Ofac). (Texte intégral)

Mots-clés Agrovoc : forêt tropicale humide, changement climatique, impact sur l'environnement, biodiversité, biomasse, croissance, modèle de simulation, modèle mathématique, dendrométrie

Mots-clés géographiques Agrovoc : Afrique centrale

Classification Agris : P40 - Météorologie et climatologie
K01 - Foresterie - Considérations générales
P01 - Conservation de la nature et ressources foncières
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : Axe 6 (2014-2018) - Sociétés, natures et territoires

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