An agro-climatic zoning of wheat cultivation in the Kermanshah province

Since the most cultivated areas allocated to dry land wheat in Kermanshah province, therefore the climatic zoning wheat cultivation seemed necessary for this province. To reach the research objectives was used the climatic data 6 synoptic stations (1989-2012) and climate data 8 climatological stations (2008-2013). Initially for analyzing and performance steps, used software SMADA for different distribution possibilities, selected planting date and the best statistical distribution Then extracted map precipitation, temperature and thermal stresses and applied contribution of each layer in the layer zoning, So that the highest percentage of participation is related to precipitation The germination period With 31.5% and the lowest percentage of participation is related to heat stress (30) degrees Step reaching With 8.1%. The results showed that Between Elements of climate, precipitation and temperature There are important factors of wheat cultivation in the end By combining layers To the Method Weighted overlap in ArcGIS environment, were extracted wheat climatic zoning map. The results showed that the very appropriate areas with an area of 16.7% in parts of the northwest, west and southwest, appropriate areas with an area of 14.36% in the northwest, west and southwest, the average areas with 15.27% in the southwest, west, central, north, northeast and southeast and poor areas with 53.64%, is located more in central and northeast. This research can be used in order to the more prominently capability of geographical information systems in the composition and production of spatial and attribute data, and help managers and decision makers to access information and provide appropriate model according to the type of crop planning.