Cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)

Soil erosion is among the natural hazards that are exacerbated by human activities in the Democratic Republic of Congo (DRC). However, there is little information on the spatialization of this phenomenon at the territorial level in the DRC. This study assesses the potential use of Geographic Informa...

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Main Author:	Jean Nacishali Nteranya
Format:	article
Language:	FR
Published:	Éditions en environnement VertigO 2021
Subjects:	erosion open GIS spatial planning soil conservation Democratic Republic of Congo Environmental sciences GE1-350
Online Access:	https://doaj.org/article/b1fb7f64b59a44e2a876c8383d745f9a
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spelling	oai:doaj.org-article:b1fb7f64b59a44e2a876c8383d745f9a2021-12-02T10:01:41ZCartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)1492-844210.4000/vertigo.28888https://doaj.org/article/b1fb7f64b59a44e2a876c8383d745f9a2021-02-01T00:00:00Zhttp://journals.openedition.org/vertigo/28888https://doaj.org/toc/1492-8442Soil erosion is among the natural hazards that are exacerbated by human activities in the Democratic Republic of Congo (DRC). However, there is little information on the spatialization of this phenomenon at the territorial level in the DRC. This study assesses the potential use of Geographic Information System (GIS) techniques and open access data to map areas at risk of erosion and prioritize areas for soil conservation in Uvira’s territory. In terms of results, 52.79% of this territory is characterized by a low risk of erosion with an average soil loss of 6.08 t ha-1 year-1 while 47.21% faces a risk of soil loss which excess the tolerable limit of 11 t ha-1 year-1 for highlands of tropical areas. This risk is accentuated by the loss of vegetation cover in profit of agricultural activities and urbanization. The low level of sensibility to erosion is found in the Ruzizi plain while the areas in the plateaus are highly susceptible due to their rugged terrain and high rainfall intensity. The statistical analysis of the frequency ratios of landslide shows the existence of a relationship between their occurrence and erosion intensity zones defined on the basis of the Universal Soil Loss Equation (USLE model). Soil loss modeling for different soil protection methods shows that the grassland banding and terracing approach are most appropriate to reduce the risk of erosion in this area. These methods can be combined with afforestation efforts for effective soil protection in Uvira.Jean Nacishali NteranyaÉditions en environnement VertigOarticleerosionopen GISspatial planningsoil conservationDemocratic Republic of CongoEnvironmental sciencesGE1-350FRVertigO, Vol 20, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	FR
topic	erosion open GIS spatial planning soil conservation Democratic Republic of Congo Environmental sciences GE1-350
spellingShingle	erosion open GIS spatial planning soil conservation Democratic Republic of Congo Environmental sciences GE1-350 Jean Nacishali Nteranya Cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)
description	Soil erosion is among the natural hazards that are exacerbated by human activities in the Democratic Republic of Congo (DRC). However, there is little information on the spatialization of this phenomenon at the territorial level in the DRC. This study assesses the potential use of Geographic Information System (GIS) techniques and open access data to map areas at risk of erosion and prioritize areas for soil conservation in Uvira’s territory. In terms of results, 52.79% of this territory is characterized by a low risk of erosion with an average soil loss of 6.08 t ha-1 year-1 while 47.21% faces a risk of soil loss which excess the tolerable limit of 11 t ha-1 year-1 for highlands of tropical areas. This risk is accentuated by the loss of vegetation cover in profit of agricultural activities and urbanization. The low level of sensibility to erosion is found in the Ruzizi plain while the areas in the plateaus are highly susceptible due to their rugged terrain and high rainfall intensity. The statistical analysis of the frequency ratios of landslide shows the existence of a relationship between their occurrence and erosion intensity zones defined on the basis of the Universal Soil Loss Equation (USLE model). Soil loss modeling for different soil protection methods shows that the grassland banding and terracing approach are most appropriate to reduce the risk of erosion in this area. These methods can be combined with afforestation efforts for effective soil protection in Uvira.
format	article
author	Jean Nacishali Nteranya
author_facet	Jean Nacishali Nteranya
author_sort	Jean Nacishali Nteranya
title	Cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)
title_short	Cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)
title_full	Cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)
title_fullStr	Cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)
title_full_unstemmed	Cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)
title_sort	cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’uvira (république démocratique du congo)
publisher	Éditions en environnement VertigO
publishDate	2021
url	https://doaj.org/article/b1fb7f64b59a44e2a876c8383d745f9a
work_keys_str_mv	AT jeannacishalinteranya cartographiedelerosionhydriquedessolsetpriorisationdesmesuresdeconservationdansleterritoireduvirarepubliquedemocratiqueducongo
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Cartographie de l’érosion hydrique des sols et priorisation des mesures de conservation dans le territoire d’Uvira (République démocratique du Congo)

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