CGRG Bibliography of Canadian Geomorphology
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Author : Florinsky, I.V.; Eilers, R.G.; Manning, G.; and Fuller, L.G.
Date : 1999.
Title : Prediction of soil properties with digital terrain modelling
Publication : CSSS '99. Canadian Society Soil Science Annual Meeting, Charlottetown, Prince Edward Island, August 8-11, 1999.
Issue :
Page(s) :
Abstract
We investigated the potential of two approaches for analysis and prediction of the spatial distribution of soil properties in an agricultural landscape in the Prairie Ecozone. The first approach was based on the implementation of nine types of digital terrain models and regression analysis of soil and topographic data. The second approach used the concept of accumulation, transit and dissipation zones of the landsurface. These approaches were used to extrapolate results of detailed plot studies to a broader field scale. Soil properties studied were gravimetric soil moisture, residual phosphorus, solum thickness, depth to calcium carbonate, and organic carbon of the A horizon. The dependence of soil properties on topography was obvious and was supported by results of a correlation analysis for the upper soil layer. Topographic control of gravimetric soil moisture and residual phosphorus contents decreased with depth. Correlation coefficients and regression equations used to describe topographic control of gravimetric soil moisture and residual phosphorus differed among seasons. This imposes limitations on regression-based predictions of the spatial distribution of soil properties. The prediction of soil property distribution with the concept of accumulation, transit and dissipation zones is more appropriate. This was demonstrated by a validation of the solum thickness prediction.
Bibliography of Canadian Geomorphology