Pedogenesis of soils formed on jurassic calcareous sedimentary rock formations: A transect study in northern semi-arid highlands of Ethiopia

With the objective of examining soil characteristics, pedogenic processes and classification in association to local environmental and landscape attributes, a transect study was carried out in Hnitalo Wajerat district of Northern Ethiopia. Six pedons beded on shale and dolerite parent rocks were inv...

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Published inGeoderma Regional Vol. 35; p. e00719
Main Authors Kahsay, Araya, Haile, Mitiku, Gebresamuel, Girmay, Mohammed, Muktar
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2023
Subjects
Aridisols
calcification
Calcisols
Cambisols
clay
Entisols
Ethiopia
Inceptisols
land use
landscapes
Leptosols
lithology
melanization
Pedological processes
Pedon
sandy loam soils
shale
soil formation
Soil taxonomy
texture
Vertisols
World Reference Base
Ethiopia
Leptosols
Soil taxonomy
Vertisols
Cambisols
World Reference Base
Aridisols
Pedological processes
Pedon
Inceptisols
Calcisols
Entisols
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Summary:With the objective of examining soil characteristics, pedogenic processes and classification in association to local environmental and landscape attributes, a transect study was carried out in Hnitalo Wajerat district of Northern Ethiopia. Six pedons beded on shale and dolerite parent rocks were investigated. The soils were sandy loam to clay in texture, moderately porous, neutral to strongly alkaline, nonsaline, base-rich and calcareous. The dominant pedogenic processes prominent in soils of the area were calcification, vertization, argilluviation, melanization and colloidal eluviations. Mollic and ochric horizons were noticed on surface horizons, while cambic, calcic and vertic horizons were found to be the dominant subsurface horizons. Steep upslope areas were characterized by shallow gravelly soils with continuous hard rock. Shrink-swell cracks, colluvic materials and deep soils were prominent on flat areas. The soils of the area were classified as Leptosols/Entisols, Cambisols/Inceptisols, Calcisols/Aridisols and Vertisols. The study evidenced that the pedogenic processes and soil development were largely patterned by terrain positions, lithology and land use type.
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ISSN:2352-0094
2352-0094
DOI:10.1016/j.geodrs.2023.e00719