Abstarct: For optimal utilization of lands, reasonable protection of natural resources and allocating lands to their most suitable use, land capability and suitability evaluation is necessary. In this research, which was performed in Bastam region at northern Shahrood between geographical coordinates of 54° 39′ to 55° 20′ of east longitude and 36° 26′ to 36° 45′ of north latitude, after performing general capability evaluation, different methods of land suitability evaluation including Storie, square root, maximum limitation and fuzzy set methodology were tested. The obtained land indices were compared with real crop yields in every land unit. The fuzzy set methodology found the best method with highest correlation coefficient with regard to real yield. Then, land vulnerability to chemical degradation was assessed using a model within MicroLEIS Decision Support System software, called Arenal model. Results of this model showed that perennial crops leave higher impairment than annual crops. The relative economic profitability of the selected crops were compared with together. Results of economic evaluation showed that tomato cultivation is the most beneficial crop. At last, results of those three assessments were integrated using the Analytical Hierarchy Process (AHP) technique, to determine the most suitable crop for cultivation in one of land units in terms of physical suitability towards the land, least environmental impact and most economic profit. The result revealed that wheat is the best crop for cultivation in the specified land unit.