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Daniel and Leah's Soil Profile presentation
Transcript of Daniel and Leah's Soil Profile presentation
is a the layers
or levels of soil.
There are four
layers of soil. They
are surface litter,
topsoil, subsoil and
parent material Surface Litter Surface litter is
the first layer of
a soil profile. It
is extra litter and
scraps left behind
by animals. This
layer of soil
consists of leaves,
rooms and other
rotting matter. Introduction Topsoil Topsoil also known as
hummus is the second
layer of a soil profile. It
consits of rotting matter
from the suface layer,
minerals and bedrock Subsoil Subsoil is the third
layer of a soil profile.
It is also the second
last layer of the soil
profile. This layer
consists of crumbling
rock, sand, clay, gravel
and silt. Parent Material Parent material is
the last layer of the
soil profile. It consists
of real bedrock under
all the other layers of
soil. Examples of Soil Profiles Short Video On Soil Profiles Conclusion Soil profiles are the
layers of soil. A soil
profile has four layers.
Every soil profile is
different. By: Leah and Daniel The Horizons On the top horizon which is O is made mainly of organics like orange peels and dung and fresh litter. The decomposed matter enriches the soil nutrients with things like nitrogen and potassium, helps out the soil structure or in scientific terms acts to bind particles and also enhances soil moisture retention.
On the second horizon which is A is the beginning of true mineral soil. Inside this horizon organic and inorganic materials combine to from products of weathering. This horizon is usually a darker colour do to the organic matter.
On the third horizon which is E is most of the time a light coloured horizon. The removal of clay particles, organic matter, and oxides of iron and/or aluminum are present. In carniferous areas this horizon can also be an ashy gray colour.
On the fourth horizon which is B the can be a dense and solid layer due to the accumulation of fine materials. Also it could have calcium carbonate.
On the fifth and last horizon which is C under it lays bedrock. In a Temperate deciduous soil O would have: forest litter
A would have: a mixture of Humus and minerals
E would have: Silt and Loam soil
B would have: Clay soil and minerals
C would have: Parent material
In a Grassland soil A would have: Thick alkaline, dark colour
B would have: Clay and calcium compounds
C would have: Parent material Different examples of soil profiles http://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/soil_systems/soil_development_profiles.html