[ Impacts de l’orpaillage sur la morphologie et la qualité des eaux du fleuve Cavally (Zouan-hounien, Côte d’Ivoire) ]
Volume 28, Issue 2, January 2020, Pages 515–524
Konan Kouakou Seraphin1, Kouakou Lazare Kouassi2, Konan Koffi Félix3, Yapo Assémian Sylvestre4, and Brou Loukou Alexis5
1 Departement des Sciences de la Terre, Université Jean Lorougnon Guedé, Daloa, Côte d'Ivoire
2 Laboratoire des Sciences et Technologies de l’Environnement, UFR Environnement, Université Jean Lorougnon Guedé, Daloa, Côte d’Ivoire
3 Laboratory of Aquatic Environment and Biology, UFR of Sciences and Environment Management, University Nangui ABROGOUA, Abidjan, Côte d'Ivoire
4 Laboratoire des Sciences et technologies de l’Environnement, Université Jean Lorougnon Guédé, Côte d’Ivoire
5 Laboratoire des Sciences et technologies de l’Environnement, Université Jean Lorougnon Guédé, Côte d’Ivoire
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Since the crisis that happened in 2002, artisanal gold panning activity is practised on the minor and major bed of Cavally river in Zouan-hounien (Côte d'ivoire). This generating activity of income to the populations is done without respecting the environmental and social measures. However the water of the river is used by this population for food, bodily, agricultural needs. This study aims at evaluating the impacts of artisanal gold panning on the morphology and the quality of water of the Çavally river. Thus, the treatement of satellite images by teledetection software ang geographics informations systems, the analyze and the treatement, with SEQ-Water tool, for samples taken are used. It comes out from this study that surfaces of the sections of the river evolved/moved from 5,68%, in 1986, to 16,31%, in 2011. Between 2011 and 2018, surfaces of the sections increased by 16,39% to 55,93%. This study raises too that water of the Çavally river is of average quality. It thus allowed to propose an action plan to fight against the impacts of the artisanal gold panning on the quality of water while being based on the classification carried out according to the uses.
Author Keywords: gold panning , water quality , morphology , Zouan-hounien.
Volume 28, Issue 2, January 2020, Pages 515–524
Konan Kouakou Seraphin1, Kouakou Lazare Kouassi2, Konan Koffi Félix3, Yapo Assémian Sylvestre4, and Brou Loukou Alexis5
1 Departement des Sciences de la Terre, Université Jean Lorougnon Guedé, Daloa, Côte d'Ivoire
2 Laboratoire des Sciences et Technologies de l’Environnement, UFR Environnement, Université Jean Lorougnon Guedé, Daloa, Côte d’Ivoire
3 Laboratory of Aquatic Environment and Biology, UFR of Sciences and Environment Management, University Nangui ABROGOUA, Abidjan, Côte d'Ivoire
4 Laboratoire des Sciences et technologies de l’Environnement, Université Jean Lorougnon Guédé, Côte d’Ivoire
5 Laboratoire des Sciences et technologies de l’Environnement, Université Jean Lorougnon Guédé, Côte d’Ivoire
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Since the crisis that happened in 2002, artisanal gold panning activity is practised on the minor and major bed of Cavally river in Zouan-hounien (Côte d'ivoire). This generating activity of income to the populations is done without respecting the environmental and social measures. However the water of the river is used by this population for food, bodily, agricultural needs. This study aims at evaluating the impacts of artisanal gold panning on the morphology and the quality of water of the Çavally river. Thus, the treatement of satellite images by teledetection software ang geographics informations systems, the analyze and the treatement, with SEQ-Water tool, for samples taken are used. It comes out from this study that surfaces of the sections of the river evolved/moved from 5,68%, in 1986, to 16,31%, in 2011. Between 2011 and 2018, surfaces of the sections increased by 16,39% to 55,93%. This study raises too that water of the Çavally river is of average quality. It thus allowed to propose an action plan to fight against the impacts of the artisanal gold panning on the quality of water while being based on the classification carried out according to the uses.
Author Keywords: gold panning , water quality , morphology , Zouan-hounien.
Abstract: (french)
Depuis la crise de 2002, l’orpaillage artisanal se développe sur le lit mineur et majeur du fleuve Cavally à Zouan-hounien (Côte d’Ivoire). Cette activité génératrice de revenu pour les populations se déroule sans respecter les mesures environnementales et sociales. Or l’eau du fleuve est utilisée par cette population pour des besoins alimentaires, corporels et agricoles. Cette étude vise à évaluer les impacts de l’orpaillage artisanal sur la morphologie et la qualité des eaux du fleuve Cavally. Ainsi, le traitement des images satellitaires par des logiciels de télédétection et des systèmes d’informations géographiques (SIG), de l’analyse et du traitement, à l’aide de l’outil SEQ-Eau, des échantillons prélevés ont été utilisés. Il ressort de cette étude que les surfaces des sections du fleuve ont évolué de 5,68%, en 2011, à 16,31%, en 2011. Entre 2011 et 2018, les surfaces des sections ont augmenté de 16,39% à 55,93%. Cette étude révèle aussi que l’eau du fleuve Cavally est de qualité moyenne. Elle a donc permis de proposer un plan d’action pour lutter contre les impacts de l’orpaillage artisanal sur la qualité des eaux en s’appuyant sur la classification réalisée en fonction des usages.
Author Keywords: Orpaillage , qualité de l’eau , morphologie , Zouan-hounien.
How to Cite this Article
Konan Kouakou Seraphin, Kouakou Lazare Kouassi, Konan Koffi Félix, Yapo Assémian Sylvestre, and Brou Loukou Alexis, “Artisanal gold panning impacts on morphology and water quality of Cavally river (Zouan-hounien, Côte d’Ivoire),” International Journal of Innovation and Applied Studies, vol. 28, no. 2, pp. 515–524, January 2020.
