The Food and Agriculture Organization of the United Nations (FAO) developed a methodological framework to assess
food production, which widely known as the Agro-ecological zoning (AEZ) methodology ( FAO, 1978-80 ). This
methodology is an approach to determine the ecological potential of land resources for crop production and to estimates
land suitability. It was first applied to land suitability estimates for 11 crops at three levels of inputs in five regions of
the developing world. Due to AEZ methodology involves many spatial analysis, the application of Geographical
Information System (GIS) in AEZ can provides a comprehensive framework for the appraisal and planning of land
resources