In the Ethiopian Highlands,soil and water conservation practices are of utmost importance to conserve eroded soil and combat soil loss.This study provides detailed results on on-site sediment deposition and net soil l...In the Ethiopian Highlands,soil and water conservation practices are of utmost importance to conserve eroded soil and combat soil loss.This study provides detailed results on on-site sediment deposition and net soil loss in terraced croplands in a catchment in the sub-humid Ethiopian Highlands.Sediment deposition was measured on horse bean and maize fields during the crop growing seasons of 2014 and 2015.Measurements took place on observation plots on terraced cropland with varying spacing between terraces and varying slope gradients.Net soil loss,in this case the amount leaving the terraced cropland,was calculated by modelling the Universal Soil Loss Equation(USLE)for the whole observation field and subtracting the measured sediment deposition.The study result showed about 8–11 t ha^(−1) sediment was deposited in the deposition zone of the terraced cropland,with greater sediment deposition on terraces with narrow spacing and steeper slope gradients.Sediment deposition was highest in July and August,and relatively low in September.Annual soil loss ranged from 32 to 37 t ha^(−1) in the terraced cropland of the study area.From the total soil loss in the crop growing season,about 54–74%sediment was deposited on the deposition zone of terraced crop fields.Implementation of soil and water conservation with narrow spacing,especially on the steep slopes of the sub-humid Ethiopian Highlands or other similar area,are thus highly recommended as they enable conservation of the eroded soil in the cropland.展开更多
Editorial notes This discussion is edited from a dialogue session of‘3rd Global Soil Week 2015'(globalsoilweek.org).The‘Global Soil Week'(GSW)is a multi-stakeholder platform of high-level policy-makers,scien...Editorial notes This discussion is edited from a dialogue session of‘3rd Global Soil Week 2015'(globalsoilweek.org).The‘Global Soil Week'(GSW)is a multi-stakeholder platform of high-level policy-makers,scientists,NGOs,CSOs,farmers,artists,international organizations,and the private sector.One of the main purposes of the GSW is to raise public awareness of the issues of soil and land.The‘Global Soil Week'advocates soil management in the context of sustainable development and promote equitable access to land.The‘3rd Global Soil Week 2015'was held from 19 to 23 April 2014 in Berlin.The session,on April 202015,2015,discussed the topic of‘Food Security and Sustainable Food System:the Role of Soil'.展开更多
基金supported by the Centre for Development and Environment,and the Institute of Geography,both at the University of Bernthe Water and Land Resource Centre,Ethiopiathe International Foundation for Science(research grant agreement number NO.C/5838-1).
文摘In the Ethiopian Highlands,soil and water conservation practices are of utmost importance to conserve eroded soil and combat soil loss.This study provides detailed results on on-site sediment deposition and net soil loss in terraced croplands in a catchment in the sub-humid Ethiopian Highlands.Sediment deposition was measured on horse bean and maize fields during the crop growing seasons of 2014 and 2015.Measurements took place on observation plots on terraced cropland with varying spacing between terraces and varying slope gradients.Net soil loss,in this case the amount leaving the terraced cropland,was calculated by modelling the Universal Soil Loss Equation(USLE)for the whole observation field and subtracting the measured sediment deposition.The study result showed about 8–11 t ha^(−1) sediment was deposited in the deposition zone of the terraced cropland,with greater sediment deposition on terraces with narrow spacing and steeper slope gradients.Sediment deposition was highest in July and August,and relatively low in September.Annual soil loss ranged from 32 to 37 t ha^(−1) in the terraced cropland of the study area.From the total soil loss in the crop growing season,about 54–74%sediment was deposited on the deposition zone of terraced crop fields.Implementation of soil and water conservation with narrow spacing,especially on the steep slopes of the sub-humid Ethiopian Highlands or other similar area,are thus highly recommended as they enable conservation of the eroded soil in the cropland.
文摘Editorial notes This discussion is edited from a dialogue session of‘3rd Global Soil Week 2015'(globalsoilweek.org).The‘Global Soil Week'(GSW)is a multi-stakeholder platform of high-level policy-makers,scientists,NGOs,CSOs,farmers,artists,international organizations,and the private sector.One of the main purposes of the GSW is to raise public awareness of the issues of soil and land.The‘Global Soil Week'advocates soil management in the context of sustainable development and promote equitable access to land.The‘3rd Global Soil Week 2015'was held from 19 to 23 April 2014 in Berlin.The session,on April 202015,2015,discussed the topic of‘Food Security and Sustainable Food System:the Role of Soil'.
