1. Developing an erodibility triangle for soil textures in semi-arid regions, NW Iran.
- Author
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Vaezi, Ali Reza, Hasanzadeh, Heidar, and Cerdà, Artemi
- Subjects
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SOIL texture , *SOIL erosion , *ARID regions , *RAINFALL , *REGRESSION analysis , *KRIGING - Abstract
There is a strong need to develop a simple method for rapid estimation of erodibility using readily available data. In this study, soil erodibility was measured using eleven soil textures at the plot scale (60 cm × 80 cm) on a slope of 9% in a semi-arid region. A total of 110 soil erosion experiments were conducted using ten simulated rainfalls (50 mm h − 1 for 30 min). A regression model was developed based on silt and clay content (R 2 = 0.82, p < 0.001) and was applied to estimate erodibility for 231 soils in the textural triangle. Kriging was used to spatial interpolate erodibility using these data to unknown soils on the textural triangle. A soil erodibility triangle was developed using kriging technique and its accuracy was evaluated using seven other soils. The technique showed a 5.4% error and allowed the prediction of soil erodibility in semi-arid areas by using the soil erodibility triangle. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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