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Variation in soil saturated hydraulic conductivity along the hillslope of collapsing granite gullies.
- Source :
- Hydrological Sciences Journal/Journal des Sciences Hydrologiques; Apr2018, Vol. 63 Issue 5, p803-817, 15p
- Publication Year :
- 2018
-
Abstract
- Saturated hydraulic conductivity (<italic>K<subscript>s</subscript></italic>) affects the soil hydrological process and is influenced by many factors that exhibit strong spatial variations. To accurately measure <italic>K<subscript>s</subscript></italic> and its scale, spatial variability and relationship with collapsing gullies, we analysed four double-ring infiltrometer diameters in three soil layers during <italic>in situ</italic> experiments designed to measure <italic>K<subscript>s</subscript></italic> in two typical collapsing gullies (three slope sites) in Tongcheng County of China. The results showed that <italic>K<subscript>s</subscript></italic> increased with increasing inner ring diameter, but no significant difference existed between inner diameters of 30 and 40 cm. The <italic>K<subscript>s</subscript></italic> in red soil layers was higher than that in sandy soil layers, the transition layers had the lowest values. <italic>K<subscript>s</subscript></italic> also varied with slope position, gradually decreasing with distance from the gully head. The suggestion is that the spatial variation in <italic>K<subscript>s</subscript></italic> is affected not only by the intrinsic soil properties but also by the interaction with the collapsing gully. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02626667
- Volume :
- 63
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Hydrological Sciences Journal/Journal des Sciences Hydrologiques
- Publication Type :
- Academic Journal
- Accession number :
- 129102172
- Full Text :
- https://doi.org/10.1080/02626667.2018.1453610