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Accuracy in the Identification of Subgroups Delineated by a Sample‐Based Soil Association Map
Author(s) -
Mausel P. W.,
Runge E. C. A.,
Carmer S. G.
Publication year - 1970
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1970.03615995003400040034x
Subject(s) - soil survey , soil water , sample (material) , soil map , association (psychology) , digital soil mapping , identification (biology) , geography , soil science , mathematics , geology , psychology , chemistry , ecology , chromatography , biology , psychotherapist
A procedure to develop Seventh Approximation primary and secondary subgroup soil maps was applied to sample data for Christian county, Ill. A measure of accuracy of the resulting subgroup soil association map was determined by comparison with the modern detailed Christian county soil survey. The two most dominant subgroups of soils in two‐thirds of the county were identified correctly using a sample‐based soil association map. One of the two most dominant subgroups of soils was identified correctly in most of the remainder of the county. The virtual absence of areas where the two dominant subgroups of soils were incorrectly identified is further evidence that the Seventh Approximation maps based on sample data can be used in those areas of the world needing modern soil information.