Characterization of Variable Soil-Water Properties

by J. W. Naney, USDA, Agricultural Research Service, Durant, OK, USA,
L. R. Ahuja, USDA, Agricultural Research Service, Durant, OK, USA,

Document Type: Proceeding Paper

Part of: Watershed Management in the Eighties


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 | Saturated soils | Spatial distribution | Clays | Soil analysis | Retaining structures | Land use | Watersheds

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