APPORT DE LA TELEDETECTION ÃƑ€ LANALYSE DES MUTATIONS DU PAYSAGE AGRAIRE DE LA SOUS-PREFECTURE DE SINEMATIALI ENTRE 1988, 1998 ET 2021 (NORD DE LA COTE DIVOIRE)
Journal: International Journal of Advanced Research (Vol.11, No. 09)Publication Date: 2023-09-19
Authors : COULIBALY Tiecoura Hamed KONE Mamadou; KOUAME Koffi Jean Marius Boris;
Page : 208-219
Keywords : Sinematiali Land Cover Agrarian Landscape Remote Sensing;
Abstract
In Sinematiali, we observe the growth of fruit growing in this area which is traditionally marked by the production of cotton and cereals. This expansion induces a progressive transformation of land use patterns in the agrarian landscape and impacts agricultural practices. The present study is carried out to analyze agrarian changes in the sub-prefecture of Sinematiali between 1988, 1998 and 2021 using remote sensing techniques. From the processing of Landsat 5 TM (1988, 1998) and Landsat 8 OLI-TIRS (2021) satellite images, six (06) land use modes in the agrarian landscape were identified: dense dry forest, Savanna, Culture – Perennial, Bare soil – Place of habitation and Water. Survey data carried out with operators made it possible to analyze the determinants of the evolution of land use patterns in the eponymous sub-prefecture. Thus, from 1988 to 2021, we observe a reduction in the areas of annual cultivation – fallow zones (-43%), dense dry forest (-58.6%) and savannah (-12.6%). On the other hand, the areas occupied by mango and cashew orchards increase from 478.85 ha in 1988 to 5,867.23 ha in 2021, i.e. an annual rate of change of 7.6% and an overall growth rate of 1,125.3%. This dynamic in fruit growing is partly due to the depreciation of profits from the marketing of seed cotton, the improvement in profit margins from the sale of mangoes, cashew nuts and the flexibility of maintenance orchards.
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