Abstract
Soils are a product of the factors of formation and continuously change over the earth’s surface. The analysis of the spatial variability of soil properties is important for land management and construction of an ecological environment. Soils are characterized by high degree of spatial variability due to the combined effect of physical, chemical or biological processes that operate with different intensities and at different scales. The spatial variability of soil hydraulic properties helps us to find the subsurface flux of water. The most frequently used hydraulic properties are soil water retention curve and saturated hydraulic conductivity. Both these hydraulic properties exhibit a high degree of spatial and temporal variability. The primary objective of this study was to analyze the spatial variability of hydraulic properties of forest soils of Pavanje river basin. Correlation analysis technique has been used to analyze various soil properties. Spatial variability of the forested hillslope soils at different depths varied considerably among the soil hydraulic properties. The spatial variability of water retention at all the different pressure head is low at the top layers, and increases towards the bottom layers. The saturated hydraulic conductivity is almost same in the top layers, but more in the bottom layers of forest soil.
Highlights
The spatial variability of soil hydraulic properties helps us to find the subsurface flux of water
In order to collect the more information on hydraulic properties of the forested hillslopes, this study investigated the different variables of the soil water retention curve and the saturated hydraulic conductivity properties of forest soils of the Pavanje river basin
The bar charts are drawn for all these variables of the soil water retention curve and saturated hydraulic conductivity
Summary
The spatial variability of soil hydraulic properties helps us to find the subsurface flux of water. In order to simulate water flow and solute transport process under field scale or to assess the hydrological response using models, determination of soil hydraulic properties in a large number of points but detailed features of spatial variability exhibited from these properties are required [1]. The most frequently used hydraulic properties are soil water retention curve and saturated hydraulic conductivity Both these hydraulic properties exhibit a high degree of spatial and temporal variability [2]. The results indicate that soil water dynamics is strongly affected by the variability of saturated soil hydraulic conductivity, even in homogenous anthropogenic soils. This information may have a strong impact in irrigation management and subsurface drainage efficiency as well as other water conservation issues
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