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Biosphere
Brown Earth
Properties
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Created by
Kirsty Kitchin
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Cards (10)
Deciduous
tree
Abundant leaf
litter.
Mull hummus. Dark brown
,
loamy texture
and
mildly acidic.
Presence of soil
biota
(worms) mixes the soil creating
indistinct horizons.
Soil biota helps
aerate
the soil, limiting
leaching
of
iron
and
aluminium.
Long
roots
to access
water
and
nutrients
deep
below
the surface.
Roots
help break up
parent material.
Upward
movement of water by
capillary action
encourages mixing of soil.
Darker
brown
Weathered parent material
(schist).