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Modeling carbon stocks dynamics under fallow and cocoa agroforest systems in the shifting agricultural landscape of central Cameroon

dc.contributor.authorSilatsa, F.B.
dc.contributor.authorYemefack, M.
dc.contributor.authorEwane-Nonga, N.
dc.contributor.authorKemga, A.
dc.contributor.authorHanna, R.
dc.date.accessioned2019-12-04T11:04:07Z
dc.date.available2019-12-04T11:04:07Z
dc.date.issued2017
dc.identifier.citationSilatsa, F.B., Yemefack, M., Ewane-Nonga, N., Kemga, A. & Hanna, R. (2017). Modeling carbon stock dynamics under fallow and cocoa agroforest systems in the shifting agricultural landscape of central Cameroon. Agroforestry Systems, 1-14.
dc.identifier.issn0167-4366
dc.identifier.urihttps://hdl.handle.net/20.500.12478/1342
dc.descriptionPublished online: 03 June 2016
dc.description.abstractWith increasing concerns raised by climate change, understanding biological processes within cocoa (Theobroma cacao L.) agroforest (CAF) and fallow systems is a prerequisite for developing actions related to emission reduction in the shifting agricultural landscape of Cameroon. Carbon (C) stocks and accretion were assessed and modeled in various C components (large trees, small trees, dead wood, litter, roots, soil, and total C) of fallow and CAF systems along a 50-year chronosequence. Several functions were empirically fitted to a time series of C stocks. Large tree, soil, and total C stocks were best described by a logistic growth function while that for small trees by a rational quadratic function. The best-fitted functions explained 72–96 % of C stock accumulation over time. Two metrics describing C stock accretion were derived from these functions: the point of maximum C growth and the C growth coefficient (GC). The rate of maximum growth of total C stock was reached after 12–13 years in both fallow and CAF, with maximum GCs of 6.9 and 6.3 Mg C ha−1 year−1, respectively. Over the 50-year period, the GCs of total C stocks varied between 0.2 and 6.9 Mg C ha−1 year−1, with quick accumulation within the first decade that then slowed until it levelled off after 45 years. Over a period of about 30 years, both systems sequestered a total of ~200 Mg C ha−1. This indicates that cocoa agroforests, a main source of income for local populations, can also provide significant climate change mitigation services.
dc.description.sponsorshipNorwegian Agency for Development Cooperation
dc.format.extent1-14
dc.language.isoen
dc.subjectCarbon Stock
dc.subjectFallow System
dc.subjectClimate Change
dc.subjectShifting Agriculture
dc.subjectCarbon Component
dc.subjectCocoa Agroforest
dc.subjectCarbon Growth Coefficient
dc.titleModeling carbon stocks dynamics under fallow and cocoa agroforest systems in the shifting agricultural landscape of central Cameroon
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpIntegrated Systems for the Humid Tropics
cg.contributor.crpForests, Trees and Agroforestry
cg.contributor.affiliationUniversité de Dschang
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationInstitute of Agricultural Research for Development, Cameroon
cg.coverage.regionAfrica
cg.coverage.regionCentral Africa
cg.coverage.countryCameroon
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectClimate Change
cg.iitasubjectCocoa
cg.iitasubjectForestry
cg.journalAgroforestry Systems
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid79294
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1007/s10457-016-9973-4


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