Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/13613
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dc.contributor.authorAnsari, Ahmad-
dc.contributor.authorTayfur, Gökmen-
dc.date.accessioned2023-07-27T19:50:00Z-
dc.date.available2023-07-27T19:50:00Z-
dc.date.issued2023-
dc.identifier.issn1947-5705-
dc.identifier.issn1947-5713-
dc.identifier.urihttps://doi.org/10.1080/19475705.2023.2200890-
dc.identifier.urihttps://hdl.handle.net/11147/13613-
dc.description.abstractSlope length gradient (LS) is one of the crucial factors in the Universal Soil Loss Equations (USLE, RUSLE). This study aimed at estimating the slope-length and slope-steepness (LS) factor for the entire watersheds of Afghanistan by using three different methods, namely; (1) LS-TOOLMFD (Method 1); (2) The Method of Equations (Method 2); and (3) The approach of Moore and Burch (Method 3). The first method uses the digital elevation model (DEM) in the ASCII format, and the other two methods use the DEM in the spatial domain. The results show that the LS-factor of the study area ranges from 0.01 to 44.31, with a mean of 5.24 and standard deviation of 6.95, according to Method 1; 0.03 to 163.49, with a mean of 9.6 and standard deviation of 13.58, according to Method 2; and 0 to 3985, with a mean of 7.16 and standard deviation of 29.7, according to Method 3. The study reveals that Methods 1 and 2 are more appropriate than Method 3 because Method 3 yields high LS-factor values close to or at streamlines located near mountainous regions. The highest LS values are found to be in the northeast, north, and central regions of Afghanistan, which is consistent with the high mountains and deep valley geomorphology, indicating that these regions are particularly vulnerable to soil erosion by rainfall-runoff processes. The sediment delivery ratio (SDR) for the Upper-Helmand River Basin (Upper-HRB) is also estimated by the RUSLE, employing the LS factors produced by the three methods. The results revealed that the average annual soil loss is found to be, respectively, 9.3, 18.2, and 11.1 (ton/ha/year) by using the three methods, corresponding to SDR of 23.5%, 12.1%, and 19.9%.en_US
dc.language.isoenen_US
dc.publisherTaylor & Francisen_US
dc.relation.ispartofGeomatics Natural Hazards & Risken_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSoil erosionen_US
dc.subjectSlope lengthen_US
dc.subjectLS factoren_US
dc.subjectDEMen_US
dc.subjectGISen_US
dc.subjectAfghanistanen_US
dc.subjectErosionen_US
dc.titleComparative analysis of estimation of slope-length gradient (LS) factor for entire Afghanistanen_US
dc.typeArticleen_US
dc.authorid0000-0001-9712-4031-
dc.authorid0000-0003-1988-1015-
dc.institutionauthorTayfur, Gökmen-
dc.departmentİzmir Institute of Technology. Civil Engineeringen_US
dc.identifier.volume14en_US
dc.identifier.issue1en_US
dc.identifier.wosWOS:000970019500001en_US
dc.identifier.scopus2-s2.0-85153046069en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1080/19475705.2023.2200890-
dc.authorscopusid58190963100-
dc.authorscopusid6701638605-
dc.identifier.scopusqualityQ1-
item.languageiso639-1en-
item.fulltextWith Fulltext-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.openairetypeArticle-
crisitem.author.dept03.03. Department of Civil Engineering-
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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