Publications des scientifiques de l'IRD

Razakamanarivo Ramarson Herintsitohaina, Razafindrakoto M. A., Albrecht Alain. (2010). Fonction puits de carbone des taillis d'eucalyptus à Madagascar. Bois et Forêts des Tropiques, (305), p. 5-19. ISSN 0006-579X.

Titre du document
Fonction puits de carbone des taillis d'eucalyptus à Madagascar
Année de publication
2010
Type de document
Article référencé dans le Web of Science WOS:000286957100002
Auteurs
Razakamanarivo Ramarson Herintsitohaina, Razafindrakoto M. A., Albrecht Alain
Source
Bois et Forêts des Tropiques, 2010, (305), p. 5-19 ISSN 0006-579X
Forest ecosystems have an important role in helping to fight climate change because of their large potential for storing organic carbon (C) in their different compartments (aerial parts, roots, litter and soil). Concerning land use change and forestry, the recommendation is to make exact measurements of carbon stocks in these compartments. A study was made for this purpose, to determine the carbon-fixing capacities of eucalyptus coppice plantations (20 to 111 years old) in the Central Uplands of Madagascar, in comparison with other types of land use (pseudo-steppe, crop/fallow rotation). Following destructive biomass measurements and soil sampling, allometric equations were developed and laboratory analyses performed (determination of carbon content, isotopic analyses). Taking all tree ages together, eucalyptus coppices contain the largest stocks of carbon (150.8 +/-25.3 MgC/ha as against 112 +/- 15 and 72.3 +/-9.9 MgC/ha for pseudo-steppe and crop/fallow rotation respectively). Among all use types, the soil compartment is the largest carbon reservoir, with 56 % in eucalyptus stands and over 96 % in the other cases. These eucalyptus plantations store carbon more efficiently than other land uses (44 MgC/ha for eucalyptus as against 2 MgC/ha) mainly thanks to the stump and lignified roots of the trees. However, according to the isotopic analysis, soil carbon derived from eucalyptus is only dominant on the surface, probably because of the coppice management method. Other factors besides plantation age, such as altitude and soil morphology, also need to be considered to understand the dynamics of the carbon stocks measured.
Plan de classement
Pédologie [068]
Localisation
Fonds IRD [F B010053409]
Identifiant IRD
fdi:010053409.
Contact