Combine Empirical Equation with Experiment for Prediction of Soil Saturated Hydraulic Conductivity

Abstract:

In order to improve simulation precision of saturated hydraulic conductivity, use RETC and PTFs function to simulate saturated hydraulic conductivity by measured research area surface soil (0-20cm) physicochemical property and soil texture data. The simulation results were assessed by the approach of consisting in presenting a graphical representation of model simulated compared with observed values and by mean square error. The main results indicate that the RETC-PTFs and local PTFs mean square errors are 1.19 and 0.40 respectively. The precision of RETC-PTFs is lower than local PTFs function obviously using soil physicochemical property and soil texture data. The RETC-PTFs is inappropriate to this area. Accuracy of each input data precision of RETC-PTFs play a big part in because of less data needed. More complete data not always get better simulating results.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 4815-4818
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.4815
• Online since: May 2012
• Authors: Yan Wei Liu, Zhong Yuan Zhu
• Keywords: Pedo-Transfer Functions, RETC, Saturated Hydraulic Conductivity, Soil Physicochemical Property, Soil Texture

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