Evaluation of the Aerial Biomass of Three Sahelian Species in the Ferlo (North Senegal): <i>Acacia tortilis</i> (Forsk.) Hayn essp. Raddiana (Savi) Brenan, <i>Acacia senegal</i> (L.) Willd and <i>Balanites aegyptiaca</i> (L.) Del — Oak Academic Publishing
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Evaluation of the Aerial Biomass of Three Sahelian Species in the Ferlo (North Senegal): <i>Acacia tortilis</i> (Forsk.) Hayn essp. Raddiana (Savi) Brenan, <i>Acacia senegal</i> (L.) Willd and <i>Balanites aegyptiaca</i> (L.) Del
Department of Plant Biology, Cheikh Anta Diop University, Dakar, Senegal
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Observatoire Homme-Milieux international de Tessekere, CNRS/Universite Cheikh Anta Diop, Dakar, Senegal
In a context of climate change characterized by rising temperatures, increased greenhouse gases and frequent droughts, the Sahel is presented as one of the most vulnerable areas to the adverse effects of climate change. The Sahel is presented as one of the most vulnerable areas to the adverse effects of climate change. The objective of this study is to assess the above-ground biomass and carbon stock of three Sahelian species: Acacia raddiana tortilis (Forsk.) hayne ssp. raddiana (savi) Brenan, Acacia senegal (L.) Willd and Balanites aegyptiaca (L.). The study was carried out in northern Senegal commonly known as Ferlo. Biomasses of the populations of the three target species were first assessed by harvesting the entire epigenetic part of the species and then modelled by correlation using dendrometric parameters measured on each individual of the sample. Two models, mono-specific and multi-species, were used. The results obtained showed that the diameter at breast height ( x ) and the parameter best correlated to the epigeal biomass ( y ). The dry biomass of woody plants was 31.4 ± 15.2 kg/tree for B. aegyptiaca , 30.6 ± 13.2 kg/tree for A. senegal and 26.2 ± 11.1 kg/tree for A. raddiana ; i.e . carbon equivalents of 14.75 - 14.38 - 12.31 kg/tree respectively. The amount of carbon contained in the above-ground woody biomass is estimated at 4.48 t/ha. The carbon equivalent, atmospheric CO 2 is estimated at 16.44 tons of CO 2 /ha and based on the actual density of Ferlo (108.08 ± 49.79 ind/ha) the sequestered carbon of the area is estimated at 1777.008 tons of CO 2 . The comparison between the models developed in this study and the multispecific or mono-specific models from the literature showed substantial differences. This study contributes to a better understanding of the contribution of Sahelian woody species to carbon sequestration and the results could be used in the framework of adaptation to climate change.
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