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- Title
Factors Influencing Point Measurement of Near-surface Saturated Soil Hydraulic Conductivity in a Small Sicilian Basin.
- Authors
Baiamonte, Giorgio; Bagarello, Vincenzo; D'Asaro, Francesco; Palmeri, Vincenzo
- Abstract
Hydraulic conductivity of saturated soil, K s, controls many hydrological processes. Parameterization of basin hydrological models in terms of K s is complicated and uncertain owing to the very high spatial variability of this soil property. A small Sicilian basin was intensively sampled by the simplified falling head technique to obtain spatially distributed K s data, and an attempt to explain their spatial variability on the basis of soil physical characteristics, digital elevation model-derived topographic attributes and land cover was carried out. High K s values were obtained when clay content was low and both elevation and mean slope were high. Moreover, differences in K s among land cover classes were detected. However, soil texture was found to have a main role on K s variability. This finding was supported by a subsequent intensive sampling of two areas differing by elevation and land cover. The conclusion was that, for the sampled basin, a good knowledge of the spatial distribution of the soil textural fractions is necessary to develop an appropriate sampling plan for K s, regardless of both the position within the basin and land use. Copyright © 2016 John Wiley & Sons, Ltd.
- Subjects
WATERLOGGING (Soils); HYDRAULIC conductivity; LAND use; LAND cover; SPATIAL variation
- Publication
Land Degradation & Development, 2017, Vol 28, Issue 3, p970
- ISSN
1085-3278
- Publication type
Article
- DOI
10.1002/ldr.2674