Abstract Purpose Information about particle size distribution (PSD) and soil texture is essential for understanding drainage, porosity, nutrient availability, trafficability. The sieve-pipette/gravimetric method traditionally used analysis labour-intensive resource-intensive. X-ray fluorescence (XRF) spectrometry may provide a rapid alternative. study’s aim was to examine the use of XRF determi...

Controlling dissolved phosphorus (DP) loss from high P soil to avoid water eutrophication is a worldwide priority. A greenhouse study was conducted in which flue gas desulfurization gypsum (FGDG) applied by using different application methods and rates two agricultural soils. Phosphorus fertilizer incorporated into the soils at 2.95 g kg−1 simulate with levels. The FGDG then amounts of 0, 1.5, ...

This paper presents a case study of several DNAPL contaminated sites around the Severn Estuary (UK) where a combination of detailed observations, core dissections and physicochemical characterisation of alluvial clay–silt horizons have revealed the presence of fossil rootlet biopores which act and have the potential to act as conduits for contaminant migration through up to 13 m of clay–silt. T...

Quantitative knowledge of stabilizationand decomposition processes is necessary to understand, assess and predict effects of land use changes on storage and stability of soil organic carbon (soil C) in the tropics. Although it is well documented that different soil types have different soil C stocks, it is presently unknown how different soil types affect the stability of recently formed soil C...

Modeling the contaminant transport process in soils requires the solute transport parameters. Displacement experiments were carried out on soil columns (Sand – Silt – Clay) by injecting a solution of 0.8 M KCl in a steady state. Breakthrough curves are symmetrical, characteristics of an equilibrium solute transport. The hydrodynamic dispersion coefficients were estimated by optimizing the measu...

Varved clays, which consist of alternating layers of silt and clay, are common in glaciated regions of North America and Northern Europe. This layering results in several unique engineering properties making varved clays a challenging soil for engineering design. Varved clays have hydraulic conductivity and undrained shear strength anisotropy that far exceeds that of most other soils. The stren...

introduction: globally, soil erosion is a principal degradation process resulting in negative impacts on different soil functions (food and other biomass production, water storing, filtering and transformation, habitat and gene pool, physical and cultural environment for mankind, and source of raw materials) which ultimately causes irreversible effect on the poorly renewable soil resource. dete...