Wood density, phytomass variations within and among trees, and allometric equations in a tropical rainforest of Africa

Autor: Martial Bernoux, J. Eshun, Aurélien Besnard, Winston Asante, Stephen Adu-Bredu, Matieu Henry, Laurent Saint-André, Riccardo Valentini
Přispěvatelé: Ecologie Fonctionnelle et Biogéochimie des Sols (Eco&Sols), Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Ecole Nationale Supérieure Agronomique de Montpellier (ENSA M), AgroParisTech, Tuscia University, Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD [France-Sud]), Kwame Nkrumah University of Science and Technology [GHANA] (KNUST), Samartex Timber & Plywood Company Limited, Partenaires INRAE, Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Unité de recherche Biogéochimie des Ecosystèmes Forestiers (BEF), Institut National de la Recherche Agronomique (INRA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)
Jazyk: angličtina
Rok vydání: 2010
Předmět:
0106 biological sciences
010504 meteorology & atmospheric sciences
WOOD DENSITY
F62 - Physiologie végétale - Croissance et développement
F50 - Anatomie et morphologie des plantes
01 natural sciences
Guild status
BIOMASS
Allométrie
MIXED PROCEDURE
Tropical forest
[SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture
forestry
K01 - Foresterie - Considérations générales
Biomasse
Carbon assessment
Densité
MATHEMATICAL MODELS
Forêt tropicale humide
SUB-SAHARAN AFRICA
EQUATIONS
Mathematics
ALLOMETRY
density
WEST AFRICA
U10 - Informatique
mathématiques et statistiques
Ecology
VARIATION INTRA-ARBRES
Forestry
GUILD STATUS
Wood
séquestration du carbone
réduction des émissions
P01 - Conservation de la nature et ressources foncières
Modèle mathématique
Woody plant
TROPICAL FOREST
Mixed procedure
Carbone
REDD
Tree allometry
Rainforest
Management
Monitoring
Policy and Law
Bois
West Africa
Forest ecology
Bois tropical
0105 earth and related environmental sciences
Nature and Landscape Conservation
VARIATION INTER-ARBRES
biomass
FOREST TREES
DIAMETER
Diameter at breast height
FOREST RESERVE
Modèle de simulation
TROPICAL RAIN FORESTS
CARBON ASSESSMENT
15. Life on land
BIOMASS PRODUCTION
Guild
Allometry
METHODOLOGIE
010606 plant biology & botany
Tropical rainforest
Zdroj: Forest Ecology and Management
Forest Ecology and Management, Elsevier, 2010, 260 (8), pp.1375-1388. ⟨10.1016/j.foreco.2010.07.040⟩
ISSN: 0378-1127
DOI: 10.1016/j.foreco.2010.07.040⟩
Popis: International audience; The development of tree allometric equations is crucial to accurate forest carbon assessment. However, very few allometric equations exist for sub-Saharan Africa and as a result generalized allometric equations, often established for forests in other continents, are used by default. The objectives of this study were (1) to propose a sampling methodology and calculation procedures to assess biomass for tropical tree species of contrasted tree shapes in Africa, (2) to identify factors affecting within and between trees wood density, (3) to propose an allometric model that integrates these factors and (4) to evaluate the reliability of using generalized allometric equations in this type of forests. Models were developed to predict wood density and phytomass of the trees based on the harvesting of 42 trees from 16 species, representing three guild status in the wet evergreen forest of Boi Tano in Ghana. Results indicated that the wood density was highly influenced by the tree species, guild status, size of the tree and pith to bark distance. Dry mass of a tree was influenced by diameter at breast height, crown diameter and wood density. The wood density depends on the position of the wood within the tree and the guild status considered. The use of generalized allometric models in literature is limited by the specific climate zone, the consideration of tree height and species specific wood density. In considering those factors, using generalized allometric equations could result in an error of 3%. Further research should better consider the bigger trees and the influence of the topography and ecosystem history.
Databáze: OpenAIRE
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