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Podzol - Coggle Diagram
Podzol
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EXPLAIN
A
- Limited soil biota leads to clearly defined soil horizons.
- Eluviation leaves an ash grey A horizon.
B
- Illuviation leads to a reddish-brown B horizon.
- High precipitation leads to leaching.
- This is the downward movement of AI and Fe oxides.
- This forms an iron pan between the A/B horizons.
- The iron pan may impede drainage and cause waterlogging. - Often found on steep slopes which further encourages leaching.
AO
- Coniferous needles and cones produce acidic mor humus.
- Low temperatures lead to slow decomposition.
- Shallow roots mean limited absorption of deep leahced minerals.
- Shallow roots also mean limited nutrient recycling.
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