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Assessing the impacts of different land uses and soil and water conservation interventions on runoff and sediment yield at different scales in the central highlands of Ethiopia

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Relation http://oar.icrisat.org/12125/
https://www.cambridge.org/core/journals/renewable-agriculture-and-food-systems/article/assessing-the-impacts-of-different-land-uses-and-soil-and-water-conservation-interventions-on-runoff-and-sediment-yield-at-different-scales-in-the-central-highlands-of-ethiopia/4F63E376EE1DAEB257043E7197E5B060
https://doi.org/10.1017/S1742170520000010
 
Title Assessing the impacts of different land uses and soil and water conservation interventions on runoff and sediment yield at different scales in the central highlands of Ethiopia
 
Creator Yaekob, T
Tamene, L
Gebrehiwot, S G
Demissie, S S
Adimassu, Z
Woldearegay, K
Mekonnen, K
Amede, T
Abera, W
Recha, J W
Solomon, D
Thorne, P
 
Subject Soil
Ethiopia
Water Conservation
 
Description To tackle the problem of soil erosion and moisture stress, the government of Ethiopia introduced a yearly mass campaign where communities get together and implement various soil
and water conservation (SWC) and water harvesting (WH) practices. Although the interventions are believed to have reduced soil erosion/sediment yield and enhanced surface and
ground water, quantitative information on the impacts of various options at different scales is scarce. The objective of this study was to assess the impacts different land uses, SWC and WH interventions on water and suspended sediment yield (SSY) at plot and watershed scales in the central highlands of Ethiopia. Standard erosion plot experiments and hydrological stations were used to monitor the daily water and SSY during 2014 to 2017. The results show differences between treatments both at plot and watershed scales. Runoff and soil loss were reduced by an average 27 and 37%, respectively due to SWC practices at the plot level. Overall, SWC practices implemented at the watershed level reduced sediment yield by about 74% (in the year 2014), although the magnitude of sediment reduction due to the
SWC interventions reduced over time. At both scales it was observed that as the number of years since SWC measures have been in place increased, their effectiveness declined due to
the lack of maintenance. This study also revealed that extrapolating of plot data to watershed scale causes over or under estimation of net erosion.
 
Publisher Cambridge University Press
 
Date 2020-02-07
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12125/1/Renewable%20Agriculture%20and%20Food%20systems_37_S73_S87_2020.pdf
Yaekob, T and Tamene, L and Gebrehiwot, S G and Demissie, S S and Adimassu, Z and Woldearegay, K and Mekonnen, K and Amede, T and Abera, W and Recha, J W and Solomon, D and Thorne, P (2020) Assessing the impacts of different land uses and soil and water conservation interventions on runoff and sediment yield at different scales in the central highlands of Ethiopia. Renewable Agriculture and Food Systems, 37. S73-S87. ISSN 1742-1713