Application of Geostatistical analysis for prediction of Spatial Variations in Soil Texture (Case study: Farahan Plain, Markazi province)

Subject Areas : geo

علی افضلی ¹ , جواد وروانی ² , رضا جعفرنیا ³

1 - دانشگاه آزاد اسلامی/ دانشجو
2 - دانشگاه آزاد اسلامی واحد اراک/ هیت علمی
3 - دانشگاه آزاد اسلامی واحد اراک/ هیت علمی

Received: 2016-05-24 Accepted : 2018-04-28 Published : 2018-08-23

Keywords: Soil Texture, Farahan Plain, spatial variation, geostatistical, evaluation criteria,

Abstract :

In this study, spatial variation of soil texture was assessment in the Farahan plain, Markazi province, using Kriging geostatistical method. First, 52 samples from different points in the plain was prepared. Then descriptive statistics for data were determined using geostatistical analysis in ArcGIS 10.3 software. Then Kriging method was used for determination the spatial variations. Regarding the results of evaluation criteria, Kriging model had an acceptable efficiency in zoning for soil physical properties variations. So that values of evaluation criteria are close to one. On the other hand, spatial correlation was high and in all models it was less than 0.25. According to the results, soil intrinsic properties, climate and land use were effective in soil texture changes in Farahan plain. It is important to pay the attention land use in soil projects.