Journal of Range and Watershed Managment

Preparing the spatial distribution of soil factors by interpolation methods in east rangeland of Semnan

Document Type : Research Paper

Authors

Mohammad Ali Zare Chahouki 1
Lyla Khalsi Ahvazi 2
Hossein Azarnivand 1
Asghar Zare Chahouki 3

1 Associate Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran

2 PhD Student, Faculty of Natural Resources, University of Gorgan, Karaj, Iran

3 PhD Student, Faculty of Natural Resources, University of Yazd, Karaj, Iran

https://doi.org/10.22059/jrwm.2013.36515
Abstract
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. 

Keywords

distance weighting method
east rangeland of Semnan
field control showed
Gs+
Kriging
Journal of Range and Watershed Managment
Volume 66, Issue 3 - Serial Number 3
Autumn 2013
Pages 387-399

  • Receive Date 13 July 2010
  • Revise Date 11 November 2013
  • Accept Date 22 May 2011
  • Publish Date 23 October 2013

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