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An Experiment in Ordination of Some Soil Profiles¹

ABSTRACT

"Ordination" as defined by Goodall is "an arrangement of units in a uni- or multidimensional order." The authors have attempted to apply this method of classification to soil profiles.

Data concerning three groups of soil profiles were treated separately in order to show the degrees of similarity and dissimilarity between the profiles. Soils of the Miami family and catena were examined in this manner twice, once on the basis of laboratory data and a second time on the basis of current detailed soil profile descriptions. The two treatments gave some strikingly similar results. The third group of soils consisted of 25 soil profiles considered to be representative of as many great soil groups of the world. A three-dimensional model showing relationships between these profiles illustrates the possibilities of this kind of analysis.

¹ Contribution from the Soil Survey Survey Division, Wisconsin Geological and Natural History Survey, and from the Soils Department, College of Agriculture, both of the University of Wisconsin, Madison. Published with the permission of the Director of the Wisconsin Agr. Exp. Sta. Presented before Div. V, Soil Science Society of America, Nov. 19, 1959, at Cincinati, Ohio.

² Associate Professor of Soils, in charge of the Soil Survey Division, Wisconsin Geol. and Nat. Hist. Survey, and graduate student in Botany and Soils (1958–59), respectively.

Received for publication November 25, 1959. Accepted for publication February 3, 1960.