Evaluation of the Accuracy of Regression Kriging and Cokriging Models to Determine Soil Salinity

摘要

Desertification phenomenon and loss of land potential are caused by one or a combination of desertification processes such as, salinization of land, destruction of plant resources, waterlogging, water erosion, wind erosion and etc that intensify by natural and human factors. The purpose of this study is to evaluate changes in soil salinity using geostatistical methods. The research was carried out in Ardakan region to assess soil salinity (electrical conductivity) using geostatistical techniques (Regression Kriging model and Cokriging model). 150 points were taken to determine the amount of electrical conductivity by electromagnetic inductor device. The results showed that the northern parts have less salinity and the southern parts have more salinity. According to the results, the Regression Kriging method is more accurate than the Cokriging model.