Abstract

Sixty-three soil profiles, which are recognised members of four long-established soil series, are classified by the methods of numerical taxonomy. Fifty-three field and laboratory tests are used to characterize each horizon of every profile. The profiles themselves are grouped by a number of numerical techniques including single-linkage sort and principal co-ordinates analysis. The results show that all four series exhibit a high internal uniformity; that the profiles of Ettrick series are quite distinct from those of the other three; and that the profiles of Linhope and Countesswells series are reasonably well delineated from each other but not from those of Foudland. This assessment exactly matches that of the traditional system of classification which has been used by the Soil Survey of Scotland for over 20 years. The reasons why such fundamentally different approaches should yield identical results are discussed in detail.

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