Land suitability assessment of soils using geographic information system in the semi-arid area of Tunisia

Land suitability maps are useful tools for protecting soil resources. The main objective of this study was to elaborate and assess different rainfed irrigated crops. This conducted in the North-East area Tunisia, three speculations were adopted (Cereals, arboriculture vegetable crops) both conditions. Arithmetic multiplication methods used based on Food Agriculture Organization (FAO) classification Free Open Source Geographic Information System (QGIS) pedological properties, slope, elevation climatic data. Overall, regardless or conditions, results showed that studied soils particularly suitable (S1) cereals crops marginal (S3) with 20.44 23.71%, respectively. More particular, we registered an improvement land under conditions 28.63%. findings indicated using GIS system, is more then which requires some use strategies good management In our area, where agricultural productivity environmental impact climate change a struggle, classifying basis capacity could help define best practices apply order preserve functions be applied functions.