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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Site-specific versus pantropical allometric equations: Which option to estimate the biomass of a moist central African forest?
Forest Ecology and Management, Volume 312, Year 2014
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Description
Fewer data on tree biomass and allometric equations are available in African tropical moist forests than in the other tropical continents. When needing a biomass allometric equation, one thus faces the dilemma of using either a pantropical equation with the risk that it is biased for Africa, or a site-specific equation that is imprecise. Using a data set on aboveground biomass for 101 trees destructively measured at Zadié in northeastern Gabon, we fitted site-specific allometric equations and assessed the validity of ten existing equations. The best fitted model without height as a predictor was: B = exp[ - 4.0596 + 4.0624lnD - 0.228(lnD)2 + 1.4307lnρ], whereas the best fitted model with height was: B = exp[ - 2.5680 + 0.9517ln(D2H) + 1.1891lnρ], where B is the aboveground biomass in kg, D the diameter at breast height in cm, H the height in m, and ρ the wood density in gcm-3. Separate allometric equations for the stem, stump, foliage and branches were also fitted. Chave et al. (2005)'s pantropical equations for moist forests, that are currently the most commonly used allometric equations in central Africa, were not valid at Zadié with an overestimation of biomass of about 40%. The allometric equations of the same authors for wet forests were valid at Zadié, even though the climatic zone does not correspond. More data on tree biomass are needed in central Africa to explore the natural range of variability in tree biomass and identify the factors that influence variations among sites. © 2013 Elsevier B.V.
Authors & Co-Authors
Ngomanda, Alfred
Unknown Affiliation
Engone-Obiang, Nestor Laurier
Unknown Affiliation
Lebamba, Judicaël
Gabon, Franceville
Universite Des Sciences et Techniques de Masuku
Moundounga Mavouroulou, Quentin
Gabon, Franceville
Universite Des Sciences et Techniques de Masuku
Gomat, Hugues Yvan
Unknown Affiliation
Mankou, Géraud
Congo, Brazzaville
Faculte Des Sciences Universite Marien Ngouabi
Loumeto, Joël Joël
Congo, Brazzaville
Faculte Des Sciences Universite Marien Ngouabi
Iponga, Donald Midoko
Unknown Affiliation
Kossi Ditsouga, Franck
Gabon, Franceville
Universite Des Sciences et Techniques de Masuku
Zinga Koumba, Roland C.
Unknown Affiliation
Botsika Bobé, Karl Henga
Unknown Affiliation
Mikala Okouyi, Clency Sylde
Unknown Affiliation
Nyangadouma, Raoul
Unknown Affiliation
Lépengué, Alexis Nicaise
Gabon, Franceville
Universite Des Sciences et Techniques de Masuku
M’Batchi, Bertrand
Gabon, Franceville
Universite Des Sciences et Techniques de Masuku
Picard, Nicolas
France, Paris
Cirad
Statistics
Citations: 143
Authors: 16
Affiliations: 3
Identifiers
Doi:
10.1016/j.foreco.2013.10.029
ISSN:
03781127
Research Areas
Environmental
Study Locations
Gabon