Analysis and Mapping of Water Erosion Vulnerability Using GIS for the Mghila Watershed, Northwest of Algeria

Q4 Environmental Science

Archives of Hydroengineering and Environmental Mechanics Pub Date : 2023-01-01 DOI:10.2478/heem-2023-0005

A. Ratiat, Al Haddad, Ilham Bouaichi, Chahrazed Naziha Matene

{"title":"Analysis and Mapping of Water Erosion Vulnerability Using GIS for the Mghila Watershed, Northwest of Algeria","authors":"A. Ratiat, Al Haddad, Ilham Bouaichi, Chahrazed Naziha Matene","doi":"10.2478/heem-2023-0005","DOIUrl":null,"url":null,"abstract":"Abstract Intensification of extreme rainfall-runo events in arid and semi-arid regions because of climate change induce the water erosion that contributes considerably to the loss of vegetal layers of soils and reduce the storage capacity of dams by silting of transported sediments from the watershed to the impoundment. This paper aims at proposing means for protecting the Mghila dam against silting by identification and delimitation of vulnerable areas to water erosion. This dam, built in the North-West of Algeria, ensures irrigated cultivation. Topographical, geological, and land use characteristics of the watershed were analyzed using the geographic information system (GIS). Analysis of results has allowed the identification by area percentage four-vulnerability classes with sensitivity to the water erosion: low(18.89%), medium (13.08%), high (65.05%) and very high (8.38%). The spatial distribution of the lithological substratum friability, the vegetation cover and slope degrees have led to the development of an e cient strategy for the watershed management in order to reduce the e ect of water erosion on soil degradation and silting of the Mghila dam.","PeriodicalId":53658,"journal":{"name":"Archives of Hydroengineering and Environmental Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archives of Hydroengineering and Environmental Mechanics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2478/heem-2023-0005","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Environmental Science","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract Intensification of extreme rainfall-runo events in arid and semi-arid regions because of climate change induce the water erosion that contributes considerably to the loss of vegetal layers of soils and reduce the storage capacity of dams by silting of transported sediments from the watershed to the impoundment. This paper aims at proposing means for protecting the Mghila dam against silting by identification and delimitation of vulnerable areas to water erosion. This dam, built in the North-West of Algeria, ensures irrigated cultivation. Topographical, geological, and land use characteristics of the watershed were analyzed using the geographic information system (GIS). Analysis of results has allowed the identification by area percentage four-vulnerability classes with sensitivity to the water erosion: low(18.89%), medium (13.08%), high (65.05%) and very high (8.38%). The spatial distribution of the lithological substratum friability, the vegetation cover and slope degrees have led to the development of an e cient strategy for the watershed management in order to reduce the e ect of water erosion on soil degradation and silting of the Mghila dam.

查看原文本刊更多论文

阿尔及利亚西北部Mghila流域水土流失脆弱性GIS分析与制图

气候变化导致干旱半干旱区极端降雨径流事件的加剧，导致水土流失，导致土壤植被层的损失，并通过从流域向水库输送的泥沙淤积而降低水坝的蓄水能力。本文旨在通过确定和划定易受水土侵蚀的区域，提出保护姆吉拉大坝不淤积的方法。这座大坝建在阿尔及利亚西北部，保证了灌溉种植。利用地理信息系统(GIS)分析了该流域的地形、地质和土地利用特征。通过面积百分数分析，确定了低(18.89%)、中(13.08%)、高(65.05%)、高(8.38%)4个脆弱性等级。岩石基质脆弱度、植被覆盖度和坡度的空间分布为减少水土流失对姆吉拉大坝土壤退化和淤积的影响提供了有效的流域管理策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Archives of Hydroengineering and Environmental Mechanics Environmental Science-Water Science and Technology

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： Archives of Hydro-Engineering and Environmental Mechanics cover the broad area of disciplines related to hydro-engineering, including: hydrodynamics and hydraulics of inlands and sea waters, hydrology, hydroelasticity, ground-water hydraulics, water contamination, coastal engineering, geotechnical engineering, geomechanics, structural mechanics, etc. The main objective of Archives of Hydro-Engineering and Environmental Mechanics is to provide an up-to-date reference to the engineers and scientists engaged in the applications of mechanics to the analysis of various phenomena appearing in the natural environment.