Estimating input parameters for four infiltration models from basic soil, vegetation, and rainfall properties

Abstract

Quantifying infiltration is a challenging and time-consuming process because the parameters are very difficult to measure directly. Estimating them from dependent and readily measurable parameters is a more efficient alternative. Many existing studies have focused on deriving the parameters in the Green-Ampt model from basic soil properties, with few related to other infiltration models or factors. In this study, infiltration experiments were conducted on 28 small plots using a field rainfall simulator, with the purposes to: (i) investigate the effect of various factors on the parameters in four popular infiltration models; and (ii) develop predictive equations for each parameter from its id..