Biosequence
A sequence of soils that contain distinctly different soil horizons because of the influence that vegetation had on the soils during their development.
A typical biosequence would be the prairie soils in a dry environment, oak-savannah soils as a transition zone, and forested soils in a wetter environment. Prairie soils have dark, thick surface horizons while forested soils have a thin, dark surface with a light-colored zone below.
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