Geographic Information System (GIS) assisted mapping and classification of the soils of Akoko Edo Local Government Area, Edo StatePantnagar Journal of Research, Volume - 20, Issue - 3 ( September-December 2022)
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This study was carried out in Akoko Edo Local Government of Edo State to identify some of the major soils of the project area, through a geographic information system (GIS) and soil survey. Considering the active soil forming factors in the Local Government, five mapping units were delineated and representative pedons were studied, described and sampled. Soil samples were analyzed using standard methods. Soils were classified according to both USDA soil taxonomy and WRB Systems of Soil Classification. The results showed that Pedon 1 was classified according to USDA soil taxonomy as Loamy Kaolinitic Isohyperthemic Fluventic Humic Dystrudept while according to WRB, it was classified as Haplic Fluvic Cambisol (Dystric, Humic) with an aerial coverage of 560.6 ha (0.4%). Pedon 2 occupied an area of 52,715.3 ha (40.7%) and was classified according to USDA soil taxonomy as Loamy Kaolinitic Isohyperthemic Fluvaquentic Dystrudept and Haplic Fluvic Cambisol (Siltic, Greyic) according to WRB system of soil classification. Pedon 3 occupied an area of 67,189.4 ha (51.8%) was classified as Loamy kaolinitic Isohyperthemic Fluventic Dystrudept according to USDA while WRB classified it as Haplic Fluvic Cambisol (Dystric). Pedon 4 was classified according to USDA soil taxonomy as Loamy Kaolinitic Isohyperthemic Oxyaquic Eutrudept while WRB classified it as Haplic Endogleyic Cambisol (Gleyic Oxyaquic). It occupies an aerial of 8,447.3 ha (6.5%). Pedon 5 on the other hand, occupying an area of 734.2 ha (0.6 %) was classified according to USDA soil taxonomy as Loamy kaolinitic Isohyperthemic Humic dystrudept and Haplic, Fluvic Cambisols (Dystric, Humic) according to WRB system of classification. This research will therefore unveil the different types of soils in the area as well as the aerial extent of each soil type.
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