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- W2565141391 abstract "Soil erosion menace is a major environmental concern in South East Nigeria; that calls for quick measures to minimize the rate of devastation. These measures are sustainable if geospatial information on erosion sensitivity and degree of sensitivity is provided. This study identifies and integrates variables such as land use (derived from IKONOS 2012 Satellite Image), soil erodibity, rainfall erosivity, slope steepness (from Digital Terrain Model), level of imperviousness, drainage and population density to assess the degree of sensitivity in Owerri area of Nigeria to water erosion. The datasets were integrated into the GIS environment with the use of ArcGIS 10.3. The functions of weighted overlay were used to analyze the degrees of sensitivity of the entire study area to erosion hazards. The results showed that 57.56% of the study area mapped ranked medium sensitivity to erosion. With the built-up and forest land use accounting for 29.84% and 12.16%. Impervious surface analysis showed that 53.57% of the sub-watersheds had low level of imperviousness. While 46.43% of the study area had medium level of imperviousness (between 10%-25%). The study also revealed that Ohii with highest percentage sand (87.3%) and lowest percentage organic matter (0.635%) had the highest erodibility status. The study concludes that the degree of erosion sensitivity prevalent (medium) was observed in the low population density areas with substantive vegetative covers. While areas close to the city recorded very high sensitivity to erosion because of the high population density." @default.
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- W2565141391 date "2016-01-01" @default.
- W2565141391 modified "2023-09-27" @default.
- W2565141391 title "Erosion Sensitivity Assessment of Communities in Owerri, Nigeria Using Geographic Information System and Revised Universal Soil Loss Equation- Based Model" @default.
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