The 1938 soil taxonomy divided soils into three orders dependent on dominant soil forming factors. == Intrazonal soils == Intrazonal soils have more or less well-defined soil profile characteristics that reflect the dominant influence of some resident factor of relief or parent material over the classic zonal effects of climate and vegetation.
The 1938 soil taxonomy divided soils into three orders dependent on dominant soil forming factors. == Intrazonal soils == Intrazonal soils have more or less well-defined soil profile characteristics that reflect the dominant influence of some resident factor of relief or parent material over the classic zonal effects of climate and vegetation.
Source: Wikipedia "1938 USDA soil taxonomy" · CC BY-SA 4.0
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