Geospatial information system land evaluation analysis for rainfed farming using multi-criteria decision analysis approach

Bolo, Basuti and Mpoeleng, Dimane and Zlotnikova, Irina (2018) Geospatial information system land evaluation analysis for rainfed farming using multi-criteria decision analysis approach. AGRÁRINFORMATIKA / JOURNAL OF AGRICULTURAL INFORMATICS, 9 (3). pp. 36-44. ISSN 2061-862X

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Abstract

This paper aimsto develop a geospatial information system based land evaluationmethodfor rainfed farming.To produce geospatialinformationofpotential areasfor sorghumusing Multi-Criteria Decision Analysis (MCDA) approach.The land suitability is basedon the biophysicaland soil factors.Theanalysis aimed at the productionofgeospatialinformation displayed in mapsand a graphshowing potentialareas that are suitable for rainfed farming. Afuzzy modelingdecision analysis tool integrated with map algebra expression ADD (+) Geographical Information System (GIS) analysis operationwasused to combine the information from several criteria to form a single suitability map. The results showed the land parcels that aresuitable, marginal suitable and non-suitable for sorghum.The suitability map was overlaid with the existing land use to identify areas that are plowedfor sorghum that are on suitable areas.

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