Parklands and carbon sequestration in tropical sudanese area of Togo
The research aims at estimating the total carbon stock of agroforestry system in the Sudanese tropical area of Togo. Physical measurements (height, diameter, and tree density) of trees in major agroforestry parklands were achieved by random quadrat (900 m2) sampling. The total biomass carbon stock was computed following the tropical dry area allometric equation as suggested Brown. The research revealed that the total carbon stock in agroforestry systems species recorded in the study zone was 81.23 t·ha?1 whereas Adansonia digitata, Parkia biglobosa, Sterculia setigera and Vitelaria paradoxa trees' species accumulate 34.72 tha-1, 20.13 tha-1, 8.40 tha-1, and 3.89 tha-1 respectively. The A. digitata parkland (mature one) has shown the highest total carbon stock (16.93±12.9 tha-1), whereas the low values occurred in young parkland (0.23±0.06 tha-1). Among the five parklands of the study zone, high carbon stock is accumulated in dbh class ranging from [0-10] to [30-40]. The agroforestry system in the study zone could contribute to improving the functionality of the whole ecosystem by it substantial capacity to sequester carbon. In the context of global warming change implemented with the objective to improve country income through the green and clean mechanism of ecosystems; agroforestry systems could be efficiently promoted by adhering to REDD+ and clean development mechanism requirements.
Keywords: Agroforestry, above-below ground biomass, carbon stock, Togo