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This article in SSSAJ

  1. Vol. 54 No. 6, p. 1697-1701
     
    Received: June 14, 1989
    Published: Nov, 1990


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doi:10.2136/sssaj1990.03615995005400060032x

Regional and Catenary Variations in Properties of Borolls of Southern Saskatchewan, Canada

  1. D. J. Pennock  and
  2. E. de Jong
  1. Dep. of Soil Science, Univ. of Saskatchewan, Saskatoon, SK, Canada S7N 0W0)

Abstract

Abstract

The spatial pattern of soil properties results from systematic variations in the type and intensity of soil-forming processes and from random variations superimposed on the systematic variations. We examined the thickness of A horizons and depths to CaCO3 at 21 sites in southern Saskatchewan to determine whether systematic differences occurred among soil-moisture regimes of Borolls and among landform elements in catenas. The mean thickness of A horizons was thinnest for the aridic Borolls ( = 15.3 cm) and ustic Borolls ( = 15.2 cm) and thickest in the udic Borolls ( = 18.4 cm), reflecting the regional moisture gradient. The regional differences in mean depth to CaCO3 were contrary to the expected pattern: mean depths were smallest for the ustic Borolls ( = 29.9 cm) and greatest for the aridic ( = 34.1 cm) and the udic ( = 34.9 cm) Borolls. A consistent pattern was associated with landform elements in soil catenas. The smallest means for both properties were associated with shoulder and backslope elements with convex across-slope curvatures, and the greatest means for footslope elements with concave across-slope curvatures. The range in mean values of the two properties among landform elements within a catena was consistently an order of magnitude greater than the regional differences among soil subgroups.

Contribution no. R645 of the Saskatchewan Inst. of Pedology.

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