Land Capability Irrigation Potential And Crop Suitability Analysis Using Gis And Remote Sensing In Upper Kesem (awash Basin)

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Land Capability, Irrigation potential and Land suitability analysis is a prerequisite forrnsustainable agricultural production. Land Capability (Classification) evaluates parametersrnlike slope, soil depth, past erosion, waterlogging, infiltration, soil texture and stoniness ofrnthe study area. GIS and remote sensing are a tool to evaluate the above parameters andrnleads to a conclusion that 60 % of the study area well matched to annual crop production.rnMulticriteria decision-making techniques like ranking, rating etc. are employed for thernanalysis that includes pairwise combination and weighted linear combination.rnThe parameters used for suitability analysis for surface irrigation are slope, soil drainage,rnsoil depth, texture, waterlogging, land use and soil type. After evaluating the physicalrnland capability for surface irrigation, irrigation suitability map was developed. This maprnwas classified in to five suitability classes based on FAO guideline. The result shows thatrn93.87 sq km (18%) very suitable, 85.63 sq km (17 %) suitable, 176.93(34 %) marginallyrnsuitable, 126.13sq km (25 %) marginally not suitable and 33.20 sq km (6 %) permanentlyrnnot suitable.rnLand suitability analysis for specific crops especially Teff and Wheat was also donernusing Temperature and Rain fall amount of the study area in addition to the factorsrnmentioned above that are used for surface irrigation evaluation. Suitability maps for bothrnTeff and Wheat were also developed. The suitability map for each crop was classified inrnto five suitability classes. Regarding Teff 84.32 sq km (16 %) very suitable, 86.50(17%)rnsuitable, 168.95 sq km (33%) marginally suitable, 107.34 sq km (21 %) marginally notrnsuitable and 68.65 sq km (13 %) permanently not suitable for the study area. Suitabilityrnclasses for Wheat were 73.50 sq km (14%) very suitable, 96.71 sq km (19 %) suitable,rn118.93 sq km (23%) marginally suitable, 106.60 sq km (21%) marginally not suitable andrn120.02 (23%) permanently not suitable.rnKeywords: Land Capability; MCDM; Land suitability; surface irrigation; annual crop

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Land Capability Irrigation Potential And Crop Suitability Analysis Using Gis And Remote Sensing In Upper Kesem (awash Basin)

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