Scale‐dependent correlation between topsoil copper and cobalt concentrations in Scotland

Scale‐dependent correlation between topsoil copper and cobalt concentrations in Scotland Summary The soil of south‐east Scotland is locally deficient in copper and cobalt. Measurements from nearly 3000 fields for which the soil association is known were analysed to study the coregionalization of the two elements and to assess the influence of parent material on the metals' concentrations. The experimental auto‐ and cross‐variograms revealed distinct local (1.5 km) and regional (20 km) scales of spatial variation. A combination of indicator variograms of the soil associations had the same spatial structures, suggesting that parent material influences the concentrations of the metals. The coregionalization between copper and cobalt was modelled as a linear combination of three spatial structures. The resulting structural correlation coefficients showed the two elements to be fairly strongly positively correlated at the regional scale. Kriging allowed determination and mapping of each spatial component; these maps were then compared with the spatial distribution of soil associations in the region. An analysis of variance was performed before and after filtering out the nugget and short‐range spatial components. Classification by soil association (parent material) accounted for a large proportion of the variance at the regional scale, suggesting that the parent material contributes substantially more to the trace element content of the soil than had been thought earlier. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Journal of Soil Science Wiley

Scale‐dependent correlation between topsoil copper and cobalt concentrations in Scotland

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Publisher
Wiley
Copyright
Copyright © 1994 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1351-0754
eISSN
1365-2389
D.O.I.
10.1111/j.1365-2389.1994.tb00489.x
Publisher site
See Article on Publisher Site

Abstract

Summary The soil of south‐east Scotland is locally deficient in copper and cobalt. Measurements from nearly 3000 fields for which the soil association is known were analysed to study the coregionalization of the two elements and to assess the influence of parent material on the metals' concentrations. The experimental auto‐ and cross‐variograms revealed distinct local (1.5 km) and regional (20 km) scales of spatial variation. A combination of indicator variograms of the soil associations had the same spatial structures, suggesting that parent material influences the concentrations of the metals. The coregionalization between copper and cobalt was modelled as a linear combination of three spatial structures. The resulting structural correlation coefficients showed the two elements to be fairly strongly positively correlated at the regional scale. Kriging allowed determination and mapping of each spatial component; these maps were then compared with the spatial distribution of soil associations in the region. An analysis of variance was performed before and after filtering out the nugget and short‐range spatial components. Classification by soil association (parent material) accounted for a large proportion of the variance at the regional scale, suggesting that the parent material contributes substantially more to the trace element content of the soil than had been thought earlier.

Journal

European Journal of Soil ScienceWiley

Published: Mar 1, 1994

References

  • Factorial kriging analysis of springwater contents in the Dyle river basin, Belgium
    Goovaerts, Goovaerts; Sonnet, Sonnet; Navarre, Navarre
  • Combining nested and linear sampling for determining the scale and form of spatial variation of regionalized variables
    Oliver, Oliver; Webster, Webster

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