Characterization of Variable Soil-Water Propertiesby J. W. Naney, USDA, Agricultural Research Service, Durant, OK, USA,
L. R. Ahuja, USDA, Agricultural Research Service, Durant, OK, USA,
Abstract: Hydraulic conductivity, water retention, soil bulk density, and clay content were analyzed on undisturbed soil cores obtained from different depths at sixteen locations in a 24 acre watershed. Spatial distribution of each of these properties and the correlations among them were investigated. These studies were conducted to determine the spatial variability of the hydraulic conductivity from that of a more-easily measured variable such as macroporosity. The approach presented reduced the data points needed to adequately characterize the distribution of saturated hydraulic conductivity on a watershed by nearly 50%.
Subject Headings: Soil water | Hydraulic conductivity | Soil analysis | Watersheds | Spatial distribution | Porosity | Saturated soils | Water content
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