Forest soils
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-surface typically low bulk density
-trees are sensitive to changes in BD
-conventional harvesting disturbs & compacts 20-40% of forest floor
,soil developed from Eolian parent material
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-developed in eolian sands,
-usually develops in wet (often cool) areas where plant growth exceeds the
rate of residue decomposition
-excessive wetness inhibits organic matter decomposition
-microorganisms do not have enough oxygen for aerobic activities that
facilitate organic matter decomposition
-ponded water means organic material is drowning too much water not
enough air
atterberg limits
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Water contents where the soil properties change from solid-like to plastic-
like to liquid-like
interaction with vegetation
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-topography affects where plants grow by affecting water movement
-together topography & vegetation affect soil formation
soil pore space
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-soil air: not suitable for breathing
-differs from atmospheric air - has wide range of humidity
-relatively low in CO2 & more in oxygen
soil air has 100% humidity, 3.5-10% CO2, and 5-10%
does not have enough oxygen in need for humans
Alluvial parent material
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-flowing water(streams,rivers) carries sediments that are deposited in three
general classes
-soils can rage widely by texture, depending on the energy of the water
transporting the sediment
three basic types:
-flood plain-> deposits material
-Alluvial fan
-delta-> flowing -> still water
(they all make sediments that leads to alluvial soil
Profile #3 - Histosol
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This soil is found in northern Minnesota. It consists of layers of organic
materials. These soils form in wetland environments, especially in cooler
climates, where plants grow faster than organic matter can be degraded by
microorganisms (select the best 2 answers)
-climate and biota
, Abundance of elements in Earth's crust Acids/Bases
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Acids: Al, Fe
Bases: Ca, Mg, Na, K
Particle Density(will be bigger)
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-dry mass/particle (only) volume
-2.65 g/cm^3 (mineral particles)
-similar to a specific gravity of a substance
DENSITY OF WATER IS 1
Complexation
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-Organic acids complex or chelate many metal cations and remove them
from the mineral
-ex: oxalic, citric, tartaric, fluvic, humic acids
-acid often from plants or decaying organic matter
kinda like jenga
clay
Give this one a try later!
-surface typically low bulk density
-trees are sensitive to changes in BD
-conventional harvesting disturbs & compacts 20-40% of forest floor
,soil developed from Eolian parent material
Give this one a try later!
-developed in eolian sands,
-usually develops in wet (often cool) areas where plant growth exceeds the
rate of residue decomposition
-excessive wetness inhibits organic matter decomposition
-microorganisms do not have enough oxygen for aerobic activities that
facilitate organic matter decomposition
-ponded water means organic material is drowning too much water not
enough air
atterberg limits
Give this one a try later!
Water contents where the soil properties change from solid-like to plastic-
like to liquid-like
interaction with vegetation
Give this one a try later!
-topography affects where plants grow by affecting water movement
-together topography & vegetation affect soil formation
soil pore space
,Give this one a try later!
-soil air: not suitable for breathing
-differs from atmospheric air - has wide range of humidity
-relatively low in CO2 & more in oxygen
soil air has 100% humidity, 3.5-10% CO2, and 5-10%
does not have enough oxygen in need for humans
Alluvial parent material
Give this one a try later!
-flowing water(streams,rivers) carries sediments that are deposited in three
general classes
-soils can rage widely by texture, depending on the energy of the water
transporting the sediment
three basic types:
-flood plain-> deposits material
-Alluvial fan
-delta-> flowing -> still water
(they all make sediments that leads to alluvial soil
Profile #3 - Histosol
Give this one a try later!
This soil is found in northern Minnesota. It consists of layers of organic
materials. These soils form in wetland environments, especially in cooler
climates, where plants grow faster than organic matter can be degraded by
microorganisms (select the best 2 answers)
-climate and biota
, Abundance of elements in Earth's crust Acids/Bases
Give this one a try later!
Acids: Al, Fe
Bases: Ca, Mg, Na, K
Particle Density(will be bigger)
Give this one a try later!
-dry mass/particle (only) volume
-2.65 g/cm^3 (mineral particles)
-similar to a specific gravity of a substance
DENSITY OF WATER IS 1
Complexation
Give this one a try later!
-Organic acids complex or chelate many metal cations and remove them
from the mineral
-ex: oxalic, citric, tartaric, fluvic, humic acids
-acid often from plants or decaying organic matter
kinda like jenga
clay
