evaluation de stocks de carbone de l’ecosysteme mangrove, cas des baies d’ambaro et d’ambanja, region diana

Abstract

Mangroves provide a variety of ecosystem services, including high rate of carbon sequestration
and storage. The result has shown that the total carbon stock varies by forest canopy cover, the
dominant species and the intensity of human disturbance. Mixed population station, the closed
canopy station and low human disturbance station contains respectively a total carbon stocks
619.6 ± 111.5MgC.ha-1; 549.5±46.1MgC.ha-1 and 469±215.8MgC.ha-1. Deforestation of these
ecosystems continues to be high and can result in significant carbon emissions into the
atmosphere. The cumulative deforestation in the bay could lead a total loss 5,195 ha of mangrove
which correspondent to 257,016MgC carbon of vegetation within a ten years period if no
management strategy is taken. Given the exceptional capacity of the mangrove ecosystem in
carbon sequestration, their important role in climate change mitigation is demonstrated.
Reducing Emissions from Deforestation and Degradation (REDD+) is a proposed mechanism of
climate change mitigation that would reduce greenhouse gases emissions.
Keywords: Ambaro and Ambanja bays, mangrove, carbon stock, REDD +