Evaluating the Role of Runoff and Soil Erosion on Nutrient Loss in the Chenetale Watershed, Upper Blue Nile Basin, Ethiopia

2019 ◽  
pp. 274-287
Author(s):  
Alemsha G. Bogale ◽  
Dessalew W. Aynalem ◽  
Anwar A. Adem ◽  
Wolde Mekuria ◽  
Seifu A. Tilahun
Keyword(s):  
Soil Erosion ◽  
Nutrient Loss ◽  
Nile Basin ◽  
Blue Nile ◽  
Blue Nile Basin ◽  
Upper Blue Nile Basin

scholarly journals Corrigendum to “[Watershed-based soil erosion and sediment yield modeling in the Rib watershed of the Upper Blue Nile Basin, Ethiopia]” [Energy Nexus, Volume 3 (2021) 100023]

Energy Nexus ◽  
2022 ◽  
Vol 5 ◽  
pp. 100038
Author(s):  
Berhanu G. Sinshaw ◽  
Abreham M. Belete ◽  
Belachew M. Mekonen ◽  
Tesgaye G. Wubetu ◽  
Tegenu L. Anley ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Sediment Yield ◽  
Nile Basin ◽  
Blue Nile ◽  
Yield Modeling ◽  
Blue Nile Basin ◽  
Upper Blue Nile Basin

scholarly journals Prioritization of potential soil erosion susceptibility region Using fuzzy Logic and Analytical Hierarchy process, Upper Blue Nile Basin, Ethiopia

2021 ◽  
Vol 4 ◽  
pp. 10-24
Author(s):  
Berhanu G. Sinshaw ◽  
Abreham M. Belete ◽  
Agumase K. Tefera ◽  
Abebe Birara Dessie ◽  
Belay B. Bizuneh ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Soil Erosion ◽  
Analytical Hierarchy Process ◽  
Nile Basin ◽  
Blue Nile ◽  
Blue Nile Basin ◽  
Hierarchy Process ◽  
Susceptibility Region ◽  
Upper Blue Nile Basin

scholarly journals Evaluating potential impacts of land management practices on soil erosion in the Gilgel Abay watershed, upper Blue Nile basin

Heliyon ◽  
2020 ◽  
Vol 6 (8) ◽  
pp. e04777
Author(s):  
Temesgen Gashaw ◽  
Abeyou W. Worqlul ◽  
Yihun T. Dile ◽  
Solomon Addisu ◽  
Amare Bantider ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Land Management ◽  
Management Practices ◽  
Nile Basin ◽  
Blue Nile ◽  
Blue Nile Basin ◽  
Upper Blue Nile Basin

scholarly journals The status of soil erosion in the Upper Blue Nile Basin: Identification of hot spot Areas and Evaluation of Best Management Practices in the Toba Watershed

2021 ◽  
Author(s):  
Wakjira Takala Dibaba ◽  
Dessalegn Geleta Ebsa
Keyword(s):  
Soil Erosion ◽  
Watershed Management ◽  
Best Management Practices ◽  
Soil Loss ◽  
Management Practices ◽  
Nile Basin ◽  
Blue Nile ◽  
Best Management ◽  
Blue Nile Basin ◽  
Upper Blue Nile Basin

Abstract Land degradation caused by soil erosion has become the most serious problem in the Ethiopian highlands. Quantifying the spatial variations of soil loss with a strong evidence helps to prioritize the watersheds for the implementation of different management practices. The study was carried out in the Toba Watershed of the Upper Blue Nile Basin in Ethiopia. Its objective was to evaluate the rate of soil erosion and identify the hotspots with high risk of soil erosion for watershed management planning. Then, Soil and Water Assessment Tool (SWAT) was used to evaluate the effectiveness of best management practices (BMP) in reducing soil loss. The performance of SWAT in simulating streamflow and sediment yield was evaluated through sensitivity analysis, uncertainty, calibration and validation process. Statistically, the calibrated and validated sediment yields (SY) against the observed sediment data were reasonably accurate (R2 = 0.67, 0.65, NSE = 0.66, 0.64, PBIAS=-8.4%, 9.8% respectively). The annual SY in Toba watershed varies from 0.09 t ha− 1 yr− 1 to 44.8 t ha− 1 yr− 1 with an average SY of 22.7 t ha− 1 yr− 1. To prioritize the SY of the watershed, the annual severity of SY was divided into six classes: very low, low, moderate, high, very high and severe. The study also showed that SY in most watersheds (about 53.8%) were higher than the average. Cultivation on steep slopes leads to the highest SY, while forested areas have lower SY contribution. five management scenarios were evaluated using the Calibrated model. Seventeen sub-basins with SY exceeding the tolerable erosion of Ethiopia (t ha− 1 yr− 1) were considered for the analysis of the BMP scenario. The results show that reforestation combined with vegetative strips was the most effective for soil erosion control (87.8% reduction) followed by the combination of soil/stone bund and vegetative strips (83.7% reduction). Overall, the results of this study provided important data for watershed management and are very useful to ensure the sustainable management of land and natural resources at watershed level.

scholarly journals Seasonal Variation of Upper Blue Nile Basin Moisture Budget and the Global Moisture Dynamics in the Role of Spatiotemporal Precipitation Variability

2019 ◽  
Author(s):  
Megbar Wondie ◽  
U.Jaya Raju ◽  
Samuel Kenea
Keyword(s):  
Seasonal Variation ◽  
Winter Season ◽  
Precipitation Variability ◽  
Moisture Budget ◽  
Nile Basin ◽  
Medium Range Weather Forecast ◽  
Blue Nile ◽  
Blue Nile Basin ◽  
Upper Blue Nile Basin

Upper Blue Nile basin (UBNB) is the water tower of Ethiopia and downstream countries. It contributes significant moistures to the surrounding atmosphere. However, the contribution of the moisture from the basin to the precipitation in the area is not well documented. Therefore, this paper is aimed at seasonal variation of upper Blue Nile basin moisture budget and the global moistures in the role of temporal and spatial precipitation variability. To this end, we used European Centre for Medium-range Weather Forecast (ECMWF) data from 1979-2017. The UBNB moisture contributed precipitation in the central parts of the study area during the summer season, while in spring; it contributed in southern part of the study area. Northwest part of the study area got precipitation from the basin moistures during autumn season. The recycling ratios for four seasons (summer, autumn, spring and winter) were 9.70%, 16.33%, 19.01%, and 35.30% respectively. The maximum amount of precipitation is extracted from the local moistures during winter season. The annual average value of recycling ratio was found 20.11%. Hence, we concluded that UBNB moisture budget had lesser contribution of precipitation over the study area. It rather contributed a significant precipitation to the neighboring countries such as Egypt and Sudan. Further studies on moisture budget are required to explain this phenomenon in the context of Ethiopia.

scholarly journals Seasonal Variation of Upper Blue Nile Basin Moisture Budget and the Global Moisture Dynamics in the Role of Spatiotemporal Precipitation Variability

2019 ◽  
Author(s):  
Megbar Wondie ◽  
U.Jaya Raju ◽  
Samuel Kenea
Keyword(s):  
Seasonal Variation ◽  
Winter Season ◽  
Precipitation Variability ◽  
Moisture Budget ◽  
Nile Basin ◽  
Medium Range Weather Forecast ◽  
Blue Nile ◽  
Blue Nile Basin ◽  
Upper Blue Nile Basin

Upper Blue Nile basin (UBNB) is the water tower of Ethiopia and downstream countries. It contributes significant moistures to the surrounding atmosphere. However, the contribution of the moisture from the basin to the precipitation in the area is not well documented. Therefore, this paper is aimed at seasonal variation of upper Blue Nile basin moisture budget and the global moistures in the role of temporal and spatial precipitation variability. To this end, we used European Centre for Medium-range Weather Forecast (ECMWF) data from 1979-2017. The UBNB moisture contributed precipitation in the central parts of the study area during the summer season, while in spring; it contributed in southern part of the study area. Northwest part of the study area got precipitation from the basin moistures during autumn season. The recycling ratios for four seasons (summer, autumn, spring and winter) were 9.70%, 16.33%, 19.01%, and 35.30% respectively. The maximum amount of precipitation is extracted from the local moistures during winter season. The annual average value of recycling ratio was found 20.11%. Hence, we concluded that UBNB moisture budget had lesser contribution of precipitation over the study area. It rather contributed a significant precipitation to the neighboring countries such as Egypt and Sudan. Further studies on moisture budget are required to explain this phenomenon in the context of Ethiopia.

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