Institution: | 1.Department of Geography and Environmental Studies, Addis Ababa University, P.O. Box 150375, Addis Ababa, Ethiopia ;2.Soil Study and Agricultural Planning Sub-Process, Irrigation, Drainage, Flood Control and Protection Process, Ethiopian Construction Design and Supervision Works Corporation (ECDSWCo), Addis Ababa, Ethiopia ;3.Alliance for Bioversity International and Center for Tropical Agriculture (CIAT), Addis Ababa, Ethiopia ;4.Institute of Biological & Environmental Science, University of Aberdeen, 23 St Machar Drive, Aberdeen, AB24 3UU, UK ; |