Soil Profile Evolution and Erosion in Forested Landscapes - Illustrated Diagram #157221 (License: Personal Use)

The diagram shows sequential changes in soil horizons (MF = mineral fine, Bf = illuvial clay, Bs = sesquioxide accumulation, Bm = mottled layer, S = sandy, M = mottled, O-W = organic weathered) as erosion progresses. Stage I features a gentle slope with intact horizons; Stage II shows a pronounced gully and horizon disruption; Stage III reveals severe erosion with merged Bs/Bm layers and reduced topsoil. Vegetation shifts from sparse conifers to mixed deciduous-coniferous stands, reflecting ecological succession under disturbance.

Used in academic textbooks, environmental science courses, and land management resources to explain pedogenesis and erosion dynamics. Matches user intent for understanding soil degradation, landscape evolution, or preparing for earth science exams.