phases and chemical processes in soil

why the ability of soil to bind elements is important
-so that it can act as a reservoir of nutrients for plants and hold waste products so that they can be degraded by microbes
-so that it can intercept chemicals before they pollute the water
the 3 phases of the soil environment
-the soil atmosphere (gas)
-the soil solution (aqueous)
-the soil solids (solid)
the phase(s) of soil that are true phases
-gaseous
-aqueous
the phase(s) of soil that is a composite of several phases
solid
what’s unique about the solid phase of soil compared to the other 2 phases?
the solid phase if soil is a composite of several phases
the compartments of the soil solid phase
-mineral (inorganic)
-humus (organic)
-biotic (living)
boundary phases of soil
substances that accumulate at the interface between minerals or organic matter and the soil solution
examples of soil boundary phases
-exchangeable
-adsorbed
solution
composed of solvent (component in largest amount) and solute(s) (component(s) in smaller amounts)

this is the soil aqueous phase

description of soil aqueous phase
water is solvent and everything dissolved in it as the solutes
description of soil gas phase
soil air, which is a gaseous solution with N as the solvent and everything dissolved in it as the solutes
Soil minerals are commonly solid solutions. What’s an example of how this is possible?
calcite in soil having small amount of Mg replacing some Ca, such that there is a solution with calcite as the solvent and magnesite as the solute
the soil environment is bounded by…
-the soil surface
-the parent material (beneath soil)
some ways things can enter the soil thru the soil surface (inputs)
-precipitation-fluvian and eolian deposition-gases, CO2 and O2-anthropogenic materials
some ways things can exit thru the soil surface (losses)
-evapotranspiration-erosion-plant uptake-gases, CO2 and O2-volatilization
some ways things can enter the soil from the bottom (inpots)
-capillary action, H2O-water table fluctuation-salts-anthropogenic compounds
some ways things can exit the soil thru the bottom (outputs (losses))
-water
-weathering products
-degradation products
-anthropogenic compounds
x

Hi!
I'm Larry

Hi there, would you like to get such a paper? How about receiving a customized one?

Check it out