Bioeconomic Viability and Resilience of Agroforestry Systems

Alex Darius Mba, Ivric Valaire Yatat-Djeumen, Luc Doyen () and Marius Ekue
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Alex Darius Mba: University of Yaoundé 1 = Université de Yaoundé I
Ivric Valaire Yatat-Djeumen: University of Yaoundé 1 = Université de Yaoundé I, UMR AMAP - Botanique et Modélisation de l'Architecture des Plantes et des Végétations - Cirad - Centre de Coopération Internationale en Recherche Agronomique pour le Développement - CNRS - Centre National de la Recherche Scientifique - IRD [Occitanie] - Institut de Recherche pour le Développement - délégation Occitanie - IRD - Institut de Recherche pour le Développement - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - UM - Université de Montpellier, UMMISCO - Unité de modélisation mathématique et informatique des systèmes complexes [Bondy] - UGB - Université Gaston Berger de Saint-Louis Sénégal - UY1 - Université de Yaoundé I - Institut de la francophonie pour l'informatique - UCA - Université Cadi Ayyad = Cadi Ayyad University [Marrakech] - SU - Sorbonne Université - IRD [Ile-de-France] - Institut de Recherche pour le Développement - UCAD - Université Cheikh Anta Diop de Dakar [Sénégal]
Luc Doyen: CEE-M - Centre d'Economie de l'Environnement - Montpellier - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - Institut Agro Montpellier - Institut Agro - Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement - UM - Université de Montpellier
Marius Ekue: The Alliance of Bioversity International and International Center for Tropical Agriculture (CIAT) [France] - Alliance - Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT) [Rome] - CGIAR - Consultative Group on International Agricultural Research [CGIAR]

CEE-M Working Papers from CEE-M, Universtiy of Montpellier, CNRS, INRA, Montpellier SupAgro

Abstract: Agroforestry systems consist in the combination of farming and forestry landuse. This study deals with the sustainable and resilient management of agroforestry systems. We consider a stylized dynamic model capturing non-linear tree-crop interactions and controlled by tree and crop harvesting. We assess the sustainability of the system through bioeconomic viability constraints of food security, economic profitability, and biodiversity. A first analytical result relating to coupled MSY-MEY (Maximum Sustainable Yield-Maximum Economic Yield) reference points and strategies provides sufficient conditions for the non-emptiness of the viability kernel. A second result highlights a viable window, not limited to the steady states, and stressing multiple sustainable balances between tree and crop land-use for agrosystems. Viable harvesting management are deduced, in particular to maintain the tree density between specific safe boundaries. A third result informs on the resilience of the agroforestry system through both stability and recovery analysis with respect to the viable window. Numerical simulations based on Cameroonian cocoa agroforestry illustrate these theoretical insights in a tropical context.

Keywords: Viability; Cameroon; Cocoa; Resilience; Sustainability; Ecosystem Service; Agroforestry; Dynamic systems; Bioeconomics (search for similar items in EconPapers)
Date: 2026
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