Mapping of the Biophysical Impacts of the Opening Works of a New Pass on the Sandy Coast Of Grand-Lahou (Ivory Coast)

Abstract

The problem of the dynamics of the Grand-Lahou sandy coast has led to the design of an investment and management project for coastal areas in C te d Ivoire West Africa Costal Areas project with the main objective of carrying out work to stabilize the sandy coast The objective of this study is to map the biophysical environmental impacts of these protection works To do this the Land Cover and Land Use LCLU was possible thanks to the processing of data from the USGS Earth Explorer https earthexplorer usgs gov and Earthdata what are Landsat 8 OLI TIRS Landsat 7 ETM and ASTER DEM images An interpolation of the NDVI NDBI and MNDWI indexes was necessary for the realization of of the environment baseline Google Pro images from the CNES Airbus sensor were used to map the biophysical impacts of the work These are a total of 98 potentially destroyed trees a building with an area of 97 14 m2 surfaces of aquatic plants of 678 82 m2 and 113 54 m2 a surface of shrubs and grasses of 327 37 m2 and a lake ecosystem of 1646 83 m2 Measures to reduce these impacts should be considered in particular the planting of plant species to fixing the soil to effectively against coastal erosion and which plays an important role in carbon sequestration An adaptation plan for this coastal zone could be developed and used to draw up the Integrated Coastal Development and Management Plan currently being implemented to sustainably protect the Ivorian coastal zone