Premium
CLASSIFICATION OF SOILS BY NUMERICAL METHODS
Author(s) -
RAYNER J. H.
Publication year - 1966
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1966.tb01454.x
Subject(s) - numerical taxonomy , soil water , similarity (geometry) , usda soil taxonomy , mathematics , soil horizon , surveyor , representation (politics) , matrix (chemical analysis) , soil science , taxonomy (biology) , geology , soil classification , computer science , artificial intelligence , ecology , geodesy , chemistry , biology , chromatography , politics , political science , law , image (mathematics)
Summary Twenty‐three profile descriptions of soils in Glamorganshire and the laboratory measurements on soil samples of the ninety‐one horizons into which they were divided by the surveyor were examined by the methods of numerical taxonomy. The similarities between the horizons calculated by these methods were reduced to a table of similarities between profiles by averaging the similarities of those horizons that matched best, judged by their similarity and order in the profile. The soil‐similarity matrix was sorted to give a dendrogramme. Calculation of the latent roots and vectors of the matrix gave a two dimensional representation of the relationships between the soils. The Great Soil Groups to which the surveyor assigned his profiles can be picked out in this diagram.