摘要
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: <em>Acacia raddiana</em> tortilis (Forsk.) hayne ssp. raddiana (savi) Brenan, <em>Acacia senegal</em> (L.) Willd and <em>Balanites aegyptiaca</em> (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 (<em>x</em>) and the parameter best correlated to the epigeal biomass (<em>y</em>). The dry biomass of woody plants was 31.4 ± 15.2 kg/tree for <em>B. aegyptiaca</em>, 30.6 ± 13.2 kg/tree for <em>A. senegal</em> and 26.2 ± 11.1 kg/tree for <em>A. raddiana</em>;<em>i.e</em>. 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<sub>2</sub> is estimated at 16.44 tons of CO<sub>2</sub>/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<sub>2</sub>. 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.
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: <em>Acacia raddiana</em> tortilis (Forsk.) hayne ssp. raddiana (savi) Brenan, <em>Acacia senegal</em> (L.) Willd and <em>Balanites aegyptiaca</em> (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 (<em>x</em>) and the parameter best correlated to the epigeal biomass (<em>y</em>). The dry biomass of woody plants was 31.4 ± 15.2 kg/tree for <em>B. aegyptiaca</em>, 30.6 ± 13.2 kg/tree for <em>A. senegal</em> and 26.2 ± 11.1 kg/tree for <em>A. raddiana</em>;<em>i.e</em>. 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<sub>2</sub> is estimated at 16.44 tons of CO<sub>2</sub>/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<sub>2</sub>. 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.
作者
Daouda Ndiaye
Moustapha Bassimbé Sagna
Ramata Talla
Aly Diallo
Jean Luc Peiry
Aliou Guisse
Daouda Ndiaye;Moustapha Bassimbé Sagna;Ramata Talla;Aly Diallo;Jean Luc Peiry;Aliou Guisse(Department of Plant Biology, Cheikh Anta Diop University, Dakar, Senegal;Observatoire Homme-Milieux international de Tessekere, CNRS/Universite Cheikh Anta Diop, Dakar, Senegal;UMI 3189 “Environnement, Sante, Societes” UGB, UCAD, CNRS, CNRST, USTTB, Dakar, Senegal;Assane Seck University, Department of Agroforestry, Nema, Ziguinchor, Senegal;Department of Geography, Clermont Auvergne University, GEOLAB UMR 6042 CNRS, Clermont-Ferrand, France)
