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| dc.contributor.author | Lemlem Sema | |
| dc.date.accessioned | 2022-01-24T10:54:11Z | |
| dc.date.available | 2022-01-24T10:54:11Z | |
| dc.date.issued | 2022-01-24 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/12961 | |
| dc.description.abstract | Understanding the impact of land use/land cover (LULC) change on soil erosion and sedimentation is highly important for land resource management. This study was intended to investigate the impact of LULC changes on soil erosion and sediment yield in the Angereb watershed. The supervised land use classification technique was used to classify Landsat 4-5 Thematic Mapper of 1991, 2001, 2011, and Landsat 8 Operational Landsat Imagery of 2021. The GIS-based Revised Universal Soil Loss Equation (RUSLE) model was employed to estimate the rate of soil erosion. As the LULC classification result of the four years indicated that cultivated land increased from 29.6 to 42.6% between 1991 and 2021. On the other hand, bush and shrub land had decreased from 46.2 to 32.4% between 1991 and 2021. Forestland also shrinks from 16.7 to 8.8% in the same period. Such type of LULC changes increased the mean annual soil erosion rate from 39.6 in 1991 to 43.2, 53.6, and 62 t ha-1yr-1 in 2001, 2011, and 2021 respectively. Similarly, sediment yield increased from 3.6 t ha-1yr-1 in 1991 to 4.5 t ha-1yr-1 in 2001 and 4.9 t ha-1yr-1 in 2011 to 5 t ha-1yr-1 in 2021. Especially, the upstream mountainous and steeper parts of the study watershed were the erosion hotspot areas in the watershed. The increase in soil erosion from the four periods was a direct reflection of the change of bush and shrublands, forestlands, and grasslands to cultivated land. As a short-term plan, the watershed areas that have a high erosion rate should be prioritized during Soil and Water Conservation (SWC) practices. To minimize soil erosion sustainably for the future, land use plans are advised to be implemented to conserve hill slopes from cultivation. | en_US |
| dc.language.iso | en | en_US |
| dc.subject | ENVIRONMENT & CLIMATE CHANGE | en_US |
| dc.title | Estimating Soil Erosion Responses to Land Use/ Land Cover Changes using RUSLE Model in Angereb Watershed, Lake Tana Basin, Ethiopia | en_US |
| dc.type | Thesis | en_US |
