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2668844
Podzols
Description
Mind Map on Podzols, created by clarkdavid1 on 06/05/2015.
Mind Map by
clarkdavid1
, updated more than 1 year ago
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Created by
clarkdavid1
almost 9 years ago
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Resource summary
Podzols
Accumulation of iron pan caused by minerals washed from A-horizon crystallising back out of solution - zone of illuviation
Causes waterlogging
Low temperatures
Little mixing due to absence of biota
distinct horizons
Leaf litter =Pine needles
breakdown slowly due to low temps
Thin layer of Mor humus
Acidic/dark
Coniferous woodland
Shallow roots
Precipitation exceeds evaporation
Leaching leaves A-horizon a pale ash-grey colour - zone of eluviation
Leaches out organic matter and leaves a gritty texture
B- horizon = darker zone of organic decomposition, stained from iron pan above
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