ارزيابي توزيع مكاني شاخص فرسايش پذيري خاك در منطقه اروميه

Evaluation of Spatial Variability of Soil Erodibility in Uromieh Region

Recognition of spatial variability of soil characteristics is necessary for optimization of soil management. This may carry through geostatistical methods of parametric and/or non-parametric predictors. This research work was done in Southern part of Uromieh plain in order to study of the spatial variability of soil erodibility, estimation and prediction of it in non-sampled points. The Kriging, Co- kriging and Weighted Moving Average were used in Geographic Information System environment for selecting the suitable interpolation method. Cross validation and MAE and MBE parameters were used for mapping of soil erodibility. The Sturges rule was used for defining map classification. Results showed that the kriging method has the highest accuracy with correlation coefficient of 0.826 and error of 3.99 percent for prediction of soil erodibility in non-sampled points