Determination of the Spatial Distribution for Erodibility Parameters Using Different Interpolation Methods: Ilgaz National Park Soils, Turkey
Celalledin CELİLOV | Orhan DENGİZ
The aim of this study is to determine some erosion susceptibility parameters such as soil erosion factor (USLE-K), dispersion rate and clay ratio of the soils distributed within the Ilgaz National Park and map their spatial distributions using different interpolation methods with the help of Geographic Information Systems. For this aim, a total of 151 soil samples were collected from 0-20 cm soil depth using random sampling method. According to obtained results, it was determined that most part of the investigated soils has high erodobility value. In addition, according to the correlation analysis between sensitivity parameters and other physical and chemical properties of soils; A negative correlation was detected between USLEK and organic matter, lime, clay, and silt at a significance level of p<0.01, a positive correlation was found between bulk density and sand at a significance level of p<0.01. Similar case was also found for DR except for clay. In terms of clay content, there was no relationship with organic matter, but a negative correlation with p<0.05 significance with sand and silt, and a positive correlation with sand was found. As a result, due to high erosion sensitivity of a large part of the research area soils, it is necessary to take measures to increase the organic matter content and hydraulic permeability and improve its structure, as well as to protect the vegetation on the soil.
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