Solute redistribution as influenced by soil properties in relation to landscape morphology in a glacial till landscape in Manitoba

Solute redistribution was examined as influenced by soil properties in relation to landscape morphology to determine if systematic relationships occur in a glacial till soil-landscape near Miniota, Manitoba. The study examined: (1) Long-term solute redistribution across a representative soil-landscape, and (2) Short-term vertical and lateral movement of a soluble bromide (Br-) tracer at 3 representative soil-landscape complexes.; Generally speaking, soil properties indicative of progressive development were found to decrease with relative elevation (RE) and increase with convergent landscape character and measures of accumulation of water flows. Less variability in soil properties were found among landscape positions than between them.; Solute redistribution was more important during spring runoff than over the growing season at Crest and Midslope plots, while both hydrologic seasons were important at the Depression plots. Soil profiles and Br- redistribution patterns were found to be the least anisotropic at Crest plots, with high vertical relative to lateral redistribution (Vf/Lf). Vertical redistribution was found to be least important at the Midslope plots, where slope gradient (G) values were the highest. Relatively low Vf/Lf values were found where vertical curvature (Kv) was high, while relatively high Vf/Lf occurred where accumulation curvature (Ka) was high. CO3, Ahor, solum and PDI were significantly higher at Accumulation relative to Dissipation or Transit zones of flow. However, this concept did not appear to influence bromide redistribution parameters over the course of the study. (Abstract shortened by UMI.)...