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Defining Geographic Soil Bodies by Landscape Position, Soil Taxonomy, and Cluster Analysis

^a GIS Lab, 306 Founders Hall, Lincoln Univ., 820 Chestnut St., Jefferson City, MO 65102 USA
^b Soil Genesis, School of Natural Resources, Univ. of Missouri-Columbia, 302 ABNR Building, Columbia, MO 65211 USA

View larger version (27K): [in a new window]   Fig. 1 Identified landforms within the study area, and locations of sampled pedons along transects, identified by cluster group

View larger version (30K): [in a new window]   Fig. 2 Profiles of group means from three-group cluster analysis, in units of standard deviations from the overall means: a) variables representing lessivage and leaching, b) variables representing melanization, color development and parent material. See Table 1 for variable definitions, and Table 2 for pedogenic process definitions and relationships to variables

View larger version (38K): [in a new window]   Fig. 3 Pedons observed for each cluster group (1, 2, and 3) on ridge and backslope landforms, compared with the number of pedons expected if there were no relationship between cluster groups and landforms

View larger version (73K): [in a new window]   Fig. 4 Pedons observed for each cluster group (1, 2, and 3) on each surface shape (convex, plane and concave) within the backslope, compared with the number of pedons expected if there were no relationship between cluster groups and surface shape in profile

View larger version (30K): [in a new window]   Fig. 5 Locations of pedons sampled by taxonomic classification, in relationship to landforms. Classes with fewer than 3 pedons are not shown. Codes are given in Table 3

View larger version (20K): [in a new window]   Fig. 6 Pedons observed for each cluster group in each taxonomic class, compared with the number of pedons expected if there were no relationship between cluster groups and taxonomic classes. Codes for taxonomic classes are given in Table 3