74 Soil Hydraulic Properties
作者： Wolfgang Durner , Hannes Flühler
DOI: 10.1002/0470848944.HSA077C
关键词:
摘要: The accurate knowledge of hydraulic properties for unsaturated soils is critical in addressing problems a variety disciplines such as hydrology, ecology, environmental sciences, soil science, and agriculture. purpose this paper to review the characterization their applicability models simulating water transport. In theoretical section, we present fundamentals definitions framework continuum theory well provide common parameterizations functions. parameterization hysteresis phenomenon dynamic effects are addressed subsequent sections. Finally discuss issues related handling spatial temporal variability, including geostatistical characterization, upscaling, scale dependency effective properties. closes with summary on limits opportunities modeling transport Richards' equation. Keywords: soil hydrology; unsaturated zone; vadose zone; hydraulic properties; hydraulic functions; hydraulic conductivity; retention characteristic; unimodal; bimodal; parametric models; hysteresis; dynamic effects; spatial variability; effective properties; upscaling
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