Assessment of Soil Erosion by Rusle Model Using Remote Sensing and Gis Techniques: A Case Study of Huluka Watershed, Central Ethiopia
| dc.contributor.author | Atoma, Habtamu | |
| dc.date.accessioned | 2019-04-05T05:48:41Z | |
| dc.date.accessioned | 2023-11-09T14:10:13Z | |
| dc.date.available | 2019-04-05T05:48:41Z | |
| dc.date.available | 2023-11-09T14:10:13Z | |
| dc.date.issued | 2018-05-02 | |
| dc.description.abstract | Assessment of Soil Erosion by RUSLE Model Using Remote sensing and GIS Techniques: A Case Study of Huluka Watershed, Central Ethiopia Habtamu Atoma Feda, Msc. Thesis Addis Ababa University, May 2018 Soil erosion is the deterioration of soil by the physical movement of soil particles from a given site and a cause for land degradation. The present study was carried out in Huluka watershed, Oromia Region, Central Ethiopia, with the main objective to assess soil erosion risk by RUSLE using remote sensing and GIS techniques and to investigate land-use/land-cover changes of 20 years using satellite image of Landsat 5 TM 1998, Landsat 7 ETM+ 2008 and Landsat 8 OIL 2018. To assess and map the soil erosion extent and to determine the potential annual soil loss, RUSLE model was used on the basis of the adapted methodology and parameter for Ethiopian highland conditions. To generate the parameter for the model and compute the rate of annual soil loss different spatial data were collected. To achieve this, Digital Elevation Model (DEM), Sentinel2A (2018), Rainfall data and Digital soil map were used. The generated factors were combined to compute potential soil loss in the study area. The output of the study shows an expansion of agriculture/settlement and reduction of shrub/bushland, woodland and grass land over 20 years between 1998 and 2018. Agriculture/settlement replaced about 3096 ha of the land, that used to be covered by other land-use/land-cover types. The result of the study revealed that the total amount of potential soil loss was from 0.00 to 400 tons/ha/yr. Moreover, the total soil loss in Huluka watershed was 495,715 metric tons/year from 18,571 hectares of land. Based on the level of soil erosion rates, the watershed divided into five priority categories for soil conservation. Areas which are classified as severe erosion class covered an area of 1,115 ha, (6%) of the total watershed, while high to very high erosion risk class covered an area of 4032 ha (21%) and low to moderate erosion risk class covered an area of 13,424 ha (73%), respectively. Critical sub-watersheds were identified and prioritized based on their average annual soil loss for future intervention and soil and water conservation measures. Finally, five sub-watersheds were delineated and identified. The average annual soil loss from these sub-watersheds were ranged from 14.4 ton/ha/yr to 27 ton/ha/yr. Based on the results, it is recommended that the study area having large rate of erosion (27 tons/ha/yr) should be given first priority during the introduction of intensive and well-designed integrated management interventions for soil conservation. | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/17595 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Land-Use and Land-Cover | en_US |
| dc.subject | Remote Sensing | en_US |
| dc.subject | Gis | en_US |
| dc.subject | RUSLE | en_US |
| dc.subject | Soil erosion | en_US |
| dc.subject | Watershed | en_US |
| dc.title | Assessment of Soil Erosion by Rusle Model Using Remote Sensing and Gis Techniques: A Case Study of Huluka Watershed, Central Ethiopia | en_US |
| dc.type | Thesis | en_US |