sandy-skeletal) particle-size classes, 81% are in the mixed
soil-mineral class, about half are in the frigid
soil-temperature class (the other half is mesic), and about
half are in active and superactive CEC activity classes.
Aquic soils (Histosols and Aqualfs, Aquods, Aquepts,
Aquolls, and Aquents) account for 42% of the soil series.
A total of 204 soil series occur along the mapped portions
of the Canadian Great Lakes coastal zone; more than
three-quarters of the soil subgroups are Orthic Humic
Gleysols (22%), Brunisolic Gray Brown Luvisols (20%),
Gleyed Gray Brown Luvisols (10%), and Orthic Melanic
Brunisols (10%). A large portion of the unmapped Canadian GLCZ is provisionally mapped as Humo-Ferric Podzols, suggesting that the distribution of soil orders in ST is
comparable in the US and Canadian GLCZ.
Soil great groups (ST) are strongly related to soil climate,
vegetation type, parent material-geomorphic surface, and age
of material. Spodosols are common in areas with a frigid
soil-temperature class, temperate mixed vegetation, sandy
lacustrine and outwash parent materials; Alfisols are common in areas with a mesic soil-temperature class, temperate
broad-leaved vegetation, till parent materials.
Fig. 4.9 Distribution of soil series in the US GLCZ by landform
Fig. 4.10 Distribution of soil series in the Canadian GLCZ by
landform
Fig. 4.11 Distribution of soil
series in the US GLCZ by parent
material
4.4 Conclusions
51
soil-mineral class, about half are in the frigid
soil-temperature class (the other half is mesic), and about
half are in active and superactive CEC activity classes.
Aquic soils (Histosols and Aqualfs, Aquods, Aquepts,
Aquolls, and Aquents) account for 42% of the soil series.
A total of 204 soil series occur along the mapped portions
of the Canadian Great Lakes coastal zone; more than
three-quarters of the soil subgroups are Orthic Humic
Gleysols (22%), Brunisolic Gray Brown Luvisols (20%),
Gleyed Gray Brown Luvisols (10%), and Orthic Melanic
Brunisols (10%). A large portion of the unmapped Canadian GLCZ is provisionally mapped as Humo-Ferric Podzols, suggesting that the distribution of soil orders in ST is
comparable in the US and Canadian GLCZ.
Soil great groups (ST) are strongly related to soil climate,
vegetation type, parent material-geomorphic surface, and age
of material. Spodosols are common in areas with a frigid
soil-temperature class, temperate mixed vegetation, sandy
lacustrine and outwash parent materials; Alfisols are common in areas with a mesic soil-temperature class, temperate
broad-leaved vegetation, till parent materials.
Fig. 4.9 Distribution of soil series in the US GLCZ by landform
Fig. 4.10 Distribution of soil series in the Canadian GLCZ by
landform
Fig. 4.11 Distribution of soil
series in the US GLCZ by parent
material
4.4 Conclusions
51