Apport De La Teledetection Pour Le Suivi SpatioTemporel De L’occupation Du Sol Dans La Region Montagneuse Du Tonkpi (Cote D’ivoire)

Tiesse, Cyrille Bi; Wandan, Eboua Narcisse; N'da, Hyppolite Dibi

doi:10.19044/esj.2017.v13n15p310

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…Tonkpi region is a mountainous area with an average elevation ranging from 300 m above mean sea level (alms) to slightly above 1000 m amsl [ 7 ]. The climate is subtropical with average temperatures ranging up to 24°C; the rainy season extends from March to October [ 21 ]. According to the Institut National de la Statistique de Côte d'Ivoire, there were 14750 inhabitants [ 22 ], mostly natives belonging to the “Yacouba” ethnic group.…”

Section: Methodsmentioning

confidence: 99%

Risk Factors and Spatial Distribution of Schistosoma mansoni Infection among Preschool-Aged Children in Blapleu, Biankouma District, Western Côte d’Ivoire

N’Zi¹,

Ouattara

Assaré

et al. 2021

Journal of Tropical Medicine

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Schistosoma mansoni infection is common among school-age children (SAC) in western Côte d’Ivoire. Little is known on the infection rate of preschool-aged children (PSAC) due to epidemiological data deficiency and nonappropriate formulation of the drug. Thus, mass drug administration for schistosomiasis control mainly targets SAC. This study aims to identify the risk factors and spatial distribution of S. mansoni infection among PSAC in Blapleu, endemic foci of S. mansoni. We carried out a cross-sectional study in households with PSAC aged 1–6 years. A structured questionnaire was administered to mothers/guardians to obtain data on sociodemographics and water contact behaviour of children. Point-of-care circulating cathodic antigen (POC-CCA) immunodiagnostic test in urine and Kato-Katz (K-K) method with stool were used for S. mansoni infection diagnosis. Multiple logistic regression analysis was performed to determine the relationship between S. mansoni infection and sociodemographic data. Coordinates recorded by a Global Positioning System of households, water source points, and infected PSAC were used to map the spatial distribution of S. mansoni infection cases. This study was conducted with 350 PSAC aged 1–6 years. The overall infection prevalence of S. mansoni varies from 31.43% with the K-K method to 62.86% with the POC-CCA. PSAC aged 2–6 years were highly infected with S. mansoni than those aged 1-2 years (OR = 14.24, 95% CI: 5.85–34.64). PSAC who did not have access and who do not live close to the infected water source were at a significant lower risk of S. mansoni infection (OR = 0.13, 95% CI: 0.057–0.30). The main purpose of water contact of PSAC was to help their mother for laundry that occurs weekly. In Blapleu, a high risk of S. mansoni infection was observed among PSAC. Schistosomiasis control effort in such localities should include information, education, and communication, water, sanitation, and hygiene, and particularly chemotherapy targeting PSAC, reinforcing the need of the paediatric praziquantel formulation.

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Section: Methodsmentioning

confidence: 99%

Risk Factors and Spatial Distribution of Schistosoma mansoni Infection among Preschool-Aged Children in Blapleu, Biankouma District, Western Côte d’Ivoire

N’Zi¹,

Ouattara

Assaré

et al. 2021

Journal of Tropical Medicine

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“…Les sites se situent à proximité immédiate de la frontière du Congo avec le Cameroun entre les latitudes 01°40' et 02°10'Nord et les longitudes 13°50' et 14°20'Est (figure 1). Vingt (20) sites ont fait l'objet de notre étude dont treize (13) à Elogo (Tripolie1, Triplolie2, Guinée, Kampala, Zoane, Maud1, Balola, Seya, Voula, Nasimdib1, Nasimdib2, Modidoum, Maud2), un (1) à Souanké (kolabia) et six (6) à Elen (Momépiab, Moyibwan, Djaboma1, Djaboma2, Yangadou et Ekokola).…”

Section: Zone D'étudeunclassified

Impact de l’Orpaillage sur les Ecosystemes Forestiers du Secreur de Souanke, Republique du Congo

Watha-Ndoudy

Dipakama²,

Nzila

et al. 2022

ESJ

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Ce travail a pour objet de contribuer à la connaissance de l’orpaillage et de ses impacts dans les écosystèmes forestiers du secteur de Souanké au Nord-Ouest de la République du Congo. La méthodologie est basée sur l’inventaire des types et des caractéristiques des exploitations, et sur une évaluation des impacts environnementaux observés à l’aide de la grille de Fecteau et des analyses au spectrophotomètre. La télédétection a servi à l’évaluation de la dégradation forestière. Occupant 18 sites sur les 20 identifiés, l’exploitation artisanale reste dominante (soit 90%) par rapport à celle semi-industrielle. L’exploitation artisanale est pratiquée par des Congolais et certains étrangers (Camerounais, Tchadiens, Congolais de la RDC et des ressortissants des pays Ouest africains,) organisés en équipes légères tandis que l’exploitation semi-industrielle est pratiquée par des sociétés chinoises. Les impacts négatifs relevés sur l’environnement du secteur sont : dégradation du couvert végétal, perturbation du milieu faunique, excavations, stagnation des eaux et asphyxie des plantes, éboulements, modification du paysage, amoncellements de graviers et morts-terrains, augmentation de la turbidité des eaux, perturbation du régime d’écoulement des eaux, risques d’accident. Les impacts identifiés pour l’orpaillage semi-industriel et artisanal sont respectivement : majeurs (50 % vs 31%) ; moyens (29% vs 15%) ; mineurs (21% vs 54%). La turbidité est supérieure à 500 UTN du point de lavage jusqu’à 1000 m en aval dans les sites mécanisés alors qu’elle décroit rapidement en aval des sites traditionnels. La superficie forestière dégradée par les activités d’orpaillage est évaluée à 934 ha sur 13.912 ha, soit un taux de 6.7%. The aim of this work is to contribute to the knowledge of gold artisanal mining and its impacts in the forest ecosystems of Souanké sector in the northwest of the Republic of Congo. The methodology is based on an inventory of the types and characteristics of mining operations, and on an assessment of the environmental impacts observed using the Fecteau grid and spectrophotometer analyses. Remote sensing was used to assess forest degradation. Of the 20 sites identified, 18 are dominated by artisanal mining (90%) compared to semi-industrial mining. Artisanal mining is carried out by Congolese and some foreigners (Cameroonians, Chadians, West Africans, and Congolese from the DRC) and organized in small teams, whereas semi-industrial mining is carried out by Chinese companies. The negative impacts noted on the environment of the sector are degradation of the vegetation cover, environmental disturbance, excavations, stagnation of water and asphyxiation of plants, landslides, modification of the landscape, heaps of gravel and dead land abandoned, increase in water turbidity, disturbance of the flow regime of watercourses, risks of accidents. The impacts identified for semi-industrial and artisanal gold mining are respectively: major (50% vs. 31%), medium (29% vs. 15%), and minor (21% vs. 54%). Turbidity is above 500 NTU from the washing point to 1000m downstream in mechanized sites, whereas it decreases rapidly downstream in artisanal sites. The forest area degraded by gold mining activities is estimated at 934 ha out of 13,912 ha, corresponding to a rate of 6.7%.

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Contribution of Remote Sensing and GIS for Monitoring Land Use Change and Its Impact on Flood Risks in the Wadi Tessa Watershed

Baccari,

Chaar,

Brahim

et al. 2024

Advances in Science, Technology &Amp; Innovation

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Apport De La Teledetection Pour Le Suivi SpatioTemporel De L’occupation Du Sol Dans La Region Montagneuse Du Tonkpi (Cote D’ivoire)

Cited by 4 publications

References 1 publication

Risk Factors and Spatial Distribution of Schistosoma mansoni Infection among Preschool-Aged Children in Blapleu, Biankouma District, Western Côte d’Ivoire

Risk Factors and Spatial Distribution of Schistosoma mansoni Infection among Preschool-Aged Children in Blapleu, Biankouma District, Western Côte d’Ivoire

Impact de l’Orpaillage sur les Ecosystemes Forestiers du Secreur de Souanke, Republique du Congo

Contribution of Remote Sensing and GIS for Monitoring Land Use Change and Its Impact on Flood Risks in the Wadi Tessa Watershed

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