Quantification de la Biomasse et stockage du carbone du massif forestier de l’Ecole Nationale des Eaux et Forêts de Dindéresso province du Houet au Burkina Faso

Abstract

La dégradation forestière provoque la perte de carbone et contribue indirectement au changement climatique. Afin d’évaluer la contribution du massif forestier de l’Ecole Nationale des Eaux et Forêts (ENEF) à l’atténuation du changement climatique, une étude d’estimation du stock de carbone a été menée. Dans cette étude, la quantité de carbone ligneux a été estimée dans des placettes carrées de 900 m2 pour la savane, 400 m2 pour la plantation de Tectona (P Teck) et 2500 m2 en zone agroforestière (Z Agf). L’équation de type polynomial et le modèle allométrique ont été utilisés pour l’évaluation du stock de carbone. Dans la savane, le carbone stocké dans la biomasse épigée s’élève à 17,66 ± 22,05 tC/ha et celui de la biomasse hypogée ainsi que de la végétation herbacée ont été respectivement de 2,28 ± 2,41 tC/ha et de 1,39 ± 0,61 tC/ha. Au niveau de la plantation de teck et de la zone agroforestière, les quantités de carbone contenues dans la biomasse aérienne ligneuse ont été respectivement de 54,38 ± 12,04 tC/ha et 2,50 ± 3,28 tC/ha contre 7,09 ± 1,40 tC/ha et 0,35 ± 0,42 tC/ha dans les racines. Cette étude contribue à la compréhension de l’apport de la savane, de la plantation et du système agroforestier ; à la séquestration du carbone. Des actions de renforcement du potentiel ligneux de cet écosystème s’imposent pour minimiser la dégradation de ce site à long terme et afin qu’il soit une source durable de séquestration du carbone. .Mots clés : Biomasse, stock de carbone, changement climatique, savane, zone soudanienne, Burkina Faso. Forests degradation causes carbon loss and contributes indirectly to climate change. In order to estimate the contribution of the forest of ENEF (called Ecole Nationale des Eaux et Forêts) forest in the mitigation of climate change, a work based on carbon stock in the forest was implemented. In this study, the quantity of ligneous carbon was estimated in some squares of 900 m 2 for the savannah, 400 m2 for the Tectona plantation (P Teck) and 2500 m2 for the agroforestry area (Z Agf). The equation polynomial and the allometric standard were used to evaluate carbon storage. In savannah, the carbon stocked in above ground biomass was 17.66 ± 22.05 tC/ha. The contribution roots and herbaceous is respectively 2.28 ± 2.41 tC/ha and 1.39 ± 0.61 tC/ha. In teak plantation and agroforestery land, the carbon stocked in AGB was respectively 54.38 ± 12.04 tC/ha and 2.50 ± 3.28 tC/ha. Concerning the roots, it is respectively 7.09 ± 1.40 tC/ha and 0.35 ± 0.42 tC/ha. The actions to strengthen the wood potential of this ecosystem are needed to minimize the degradation of this site in the long term and to be a source of carbon sequestration.Keywords : Biomass, carbon storage, climate change, savannah, soudanian zone, Burkina Faso.

Phytodiversity, structure and carbon sequestered by avenue trees in the Municipality of Sèmè-Podji, Southern Benin

“…This difference in values is certainly linked to anthropogenic pressures that do not favor the normal growth of trees. It would therefore be important to increase reforestation and improve the management methods of urban trees in order to increase the potential for carbon sequestration in the city (Gomgnimbou et al, 2019). Thus, urban managers in Sèmè-Podji can claim to a lesser extent to mitigate air pollution and access carbon credit for the city (McHale et al, 2007).…”

“…Despite these assets, which promote human settlement, tourism, and transit, less attention is paid to the landscaping of the urban agglomeration of this city and particularly to the enhancement of its public spaces by both the urban managers and the people. This observation is illustrated by the scarcity of public green spaces, and more specifically roadway avenue trees, the abundance of which could help to mitigate the effects of climate change (Gomgnimbou et al, 2019) and to identify other contemporary challenges such as landscape attractiveness, ecological connectivity, as well as the conservation of biodiversity in the city. Globally, terrestrial ecosystems help reduce the effects of climate change because they absorb nearly 50% of carbon dioxide emissions emitted into the atmosphere (Folega et al) Quoted by Adjonou et al, 2010.…”

Explanatory factors of Zea mays var FBC6 yields in the Anacardium occidentale L. Parklands at Logofourousso in Western Burkina Faso

“…The soils in this area are ferrallitic, modally reworked soils with low desaturation. They are characterized by a sandy-loam texture on the surface (first 30 cm), and silty-clayey-sandy deeper down, with low organic carbon and total nitrogen content [11,12].…”

Supply and Regulation Services Provided by Re-greened Landscapes in the Sahel: Case of Two Villages’ Clusters Dan Saga and Tabofatt in Niger Republic

“…At Dan Saga, 5.760.06 and 1.240.004 tone of C.ha -1 respectively were recorded for above-ground and below-ground biomass. Using the integral cut method, [29] had obtained on an agroforestry site in Burkina Faso a slightly lower quantity of carbon of 2.53.28 and 0.350.42 tone of C.ha -1 respectively on the aboveground biomass and the hypogeal biomass. According to the amount of CO2, the results of this study are close to those obtained by [10] who estimated the carbon stock of an agroforestry park in Senegal at 8.81 tone CO2 ha -1 .…”