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Periodical article | Leiden University catalogue | WorldCat |
Title: | Agricultural drought assessment using remote sensing and GIS techniques: a case study of East Shewa zone, Ethiopia |
Author: | Legesse, Gizachew |
Year: | 2012 |
Periodical: | Ethiopian Journal of Development Research (ISSN 0378-0813) |
Volume: | 34 |
Issue: | 1 |
Pages: | 95-128 |
Language: | English |
Geographic term: | Ethiopia |
Subjects: | rain droughts remote sensing crop yields |
Abstract: | In dry land semi-arid areas of Ethiopia, including large parts of East Shewa Zone, agricultural drought is common, and farmers inhabiting the area experience extreme temporal and spatial variability of rainfall with longer dry spells in cropping seasons. This makes them vulnerable to the risk of agricultural drought. Thus, in order to adapt to the impact of agricultural drought, spatiotemporal variation of agricultural drought patterns and severity was assessed using different drought indices with the objective of assessing agricultural drought risk and preparing agricultural drought risk zone map. Indices-based results indicate that 2000-2005 cropping seasons experience enhanced agricultural drought and yield reduction with observed spatial difference in severity level. The year 2002 was the most severe of all followed by 2000. The risk map indicates that East Shewa zone is classified into slight, moderate and severe agricultural drought risk zones covering 17.18 per cent, 41.32 per cent and 41.50 per cent of the total area, respectively. App., bibliogr., sum. [ASC Leiden abstract] |