期刊
LAND DEGRADATION & DEVELOPMENT
卷 28, 期 3, 页码 970-982出版社
WILEY
DOI: 10.1002/ldr.2674
关键词
saturated soil hydraulic conductivity; spatial variability; terrain attributes; simplified falling head technique; basin scale
资金
- PRIN project by MIUR (Italian Ministry for University and Research) [2015AKR4HX]
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 (C) 2016 John Wiley & Sons, Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据