Pedotransfer Functions for the Estimation of Saturated Hydraulic Conductivity for Some Indian Sandy Soils
- 作者: Shwetha P.1, Prasanna K.2
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隶属关系:
- Department of Civil Engineering
- Department of Mathematics, Birla Institute of Technology and Science
- 期: 卷 51, 编号 9 (2018)
- 页面: 1042-1049
- 栏目: Soil Physics
- URL: https://journals.rcsi.science/1064-2293/article/view/224701
- DOI: https://doi.org/10.1134/S1064229318090119
- ID: 224701
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详细
Determination of the saturated hydraulic conductivity (ks) is needed in many studies and applications related to irrigation, drainage, water movement and solute transport in the soil. Although many advances are made for direct measurements of ks, they are usually time consuming and costly. Some attempts have been made to indirectly predict the saturated hydraulic conductivity from the more easily or readily available basic soil properties. The objective of this study was to develop and validate Pedotransfer Functions (PTFs) for estimation of saturated hydraulic conductivity using multiple non-linear regression technique. One hundred and one soil samples were collected from agricultural and forest soils at different depths, at different locations in the Pavanje River basin that lies in the southern coastal region of Karnataka, India. Saturated hydraulic conductivity was measured, by variable falling head method through Permeameter in the laboratory. Prediction accuracies were evaluated using coefficient of determination, root mean square error, mean error, geometric mean error ratio and geometric standard deviation of the error ratio between measured and predicted values. The results show that, the PTFs for the estimation of saturated hydraulic conductivity could be used appropriately for the soils with loamy sand and sandy loam textures falling in this area of the coastal region of southern India.
作者简介
P. Shwetha
Department of Civil Engineering
编辑信件的主要联系方式.
Email: shwethaprasanna@gmail.com
印度, Goa
K. Prasanna
Department of Mathematics, Birla Institute of Technology and Science
Email: shwethaprasanna@gmail.com
印度, Goa