preparing the spatial distribution of soil factors by interpolation methods in east rangeland of semnan

the aim of this study preparation of the predicted soil maps by using kriging and inverse distance weighting methods in east rangeland of semnan. sampling was done within each unit of sampling parallel transects and 1 vertical transect with 750m length. soil samples were taken from 0-20 cm in starting and ending points of each transect. there were used kriging and inverse distance weighting methods by gs+ and gis software to predict clay, sand, lime, ec and available moisture factors. for comparing these methods, cross validation were used by statistical parameters of mae and mbe. results showed that kriging method is better than inverse distance weighting method in all factors except clay factor.