DYNAMIQUE SPATIO-TEMPORELLE DE L'OCCUPATION DU SOL EN ZONE D'AGRICULTURE EXTENSIVE : CAS DU SECTEUR NATITINGOU-BOUKOUMBE AU NORD-OUEST DU BENIN

Abstract : Intense agricultural activity is degrading spontaneous vegetation in northwestern Benin. The objective of this study is to map the dynamics of land use in this sector of Benin, an area whose climate and soils are favorable to the development of agricultural activities. The data used in this study are essentially Landsat satellite images (2000 and 2016) and agricultural data (2005-2016). Vegetation mapping based on remote sensing data and diachronic analysis were the main methods used. The analysis of the results shows that while agricultural production, particularly food production, is increasing, the area of natural plant formations is decreasing. The latter increased from 148544.19 ha in 2000 to 115992 ha in 2016, representing a 22% regression rate for fields, fallow land and agglomerations. 30000 ha of land are sown on average per year for the cultivation of cereals against areas under 10000 ha for other crops. The value of the Allan coefficient equal to 1.28 (˂ 5) reflects the pressure on cultivable land and natural vegetation in this environment. The latter is overexploited, hence their rapid exhaustion. It is now essential to define management plans and sustainable management of natural resources in this area.
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Bidossessi Thierry Agbanou, Orekan Vincent, Abdoulaye Djafarou, Martin Paegelow, Brice Tente. DYNAMIQUE SPATIO-TEMPORELLE DE L'OCCUPATION DU SOL EN ZONE D'AGRICULTURE EXTENSIVE : CAS DU SECTEUR NATITINGOU-BOUKOUMBE AU NORD-OUEST DU BENIN. Mélanges en hommage aux professeurs Thomas Omer, Houssou Sègè Christophe et Houndaga Cossi Jean. La géographie au service du développement durable, Sep 2018, Abomey-Calavi, Bénin. pp.22-34. ⟨hal-02092545⟩

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