What determines the depth of different soil horizons?

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Offline starfire

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Does anyone know whats the reason why horizon A of the soil profile is quite deep eventhough it is located on a slope (on a farmland, where trees occur in fractionated areas throughout), where erosion/transportation of materials would be more active. Normally, it'd be expected to have a thinner soil profile. Are there any other factors contributing to this phenomena?

thank you

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« Last Edit: 09/04/2011 14:43:48 by chris »