CONTRIBUTION OF MULTICRITERIA ANALYSIS AND GIS FOR THE SPECIFIC VULNERABILITY MAPPING TO AGRICULTURAL INPUTS OF GROUNDWATERS IN BONOUA AREA (SOUTHEAST OF CÔTE D'IVOIRE)

  • ANANI TAWA ABENAN
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • KOUAME KAN JEAN
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • SALEY MAHAMAN BACHIR
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • ANOH KOUAO ARMAND
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • DEH KOUAKOU SERGE
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • KOUA JEAN JACQUES TANOH
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • EFFINI THERESE ADIOW
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • SIGNO HUBERT KOUASSI
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • JOURDA JEAN-PATRICE
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire
  • BIEMI JEAN
    University of Cocody-Abidjan, Laboratory for Remote Sensing and Spatial Analysis Applied to Hydrogeology, Côte d’Ivoire

Abstract

This study focuses on the mapping of vulnerable areas to agricultural pollution of Bonoua area where groundwater are envisaged to support the District of Abidjan. Thus to achieve this, the methodological approach adopted involve the use of GIS functionality combined with multi-criteria analysis method. The analysis of groundwater vulnerability map to nitrate in the region of Bonoua highlights five vulnerability classes ranging from very low to very high. The class of "medium vulnerability" is the most dominant and represents 44.21% of the mapped areas. This vulnerability map was validated using the measured nitrate levels in groundwater.

Cuvinte cheie

pollution specific vulnerability GIS multi-criteria analysis Bonoua Côte d’Ivoire