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- Soil_gas abstract "Soil gases are the gases found in the air space between soil components. The primary natural soil gases include nitrogen, carbon dioxide and oxygen. The oxygen is critical because it allows for respiration of both plant roots and soil organisms. Other natural soil gases are atmospheric methane and radon. Some environmental contaminants below ground produce gas which diffuses through the soil such as from landfill wastes, mining activities, and contamination by petroleum hydrocarbons which produce volatile organic compounds. Soil gases can diffuse into buildings, the chief concerns among these pollutants are radon which is radioactive and causes cancer and methane which can be flammable at only 4.4% concentration.Gases fill soil pores in the soil structure as water drains or is removed from a soil pore by evaporation or root absorption. The network of pores within the soil aerates, or ventilates, the soil. This aeration network becomes blocked when water enters soil pores. Not only are both soil air and soil water very dynamic parts of soil, but both are often inversely related.Composition of air in soil and atmosphere:Nitrogen: Soil Air: 79.2% Atmosphere: 79.0%Oxygen: Soil Air: 20.6% Atmosphere: 20.9%Carbon Dioxide: Soil Air: 0.25% Atmosphere: 0.04%Gas molecules in soil are in continuous thermal motion according to the kinetic theory of gases, there is also collision between molecules - a random walk.In soil, a concentration gradient causes net movement of molecules from high concentration to low concentration, this gives the movement of gas by diffusion. Numerically, it is explained by Fick's law of diffusion.".
- Soil_gas wikiPageID "22940609".
- Soil_gas wikiPageLength "2451".
- Soil_gas wikiPageOutDegree "19".
- Soil_gas wikiPageRevisionID "678435290".
- Soil_gas wikiPageWikiLink Air.
- Soil_gas wikiPageWikiLink Atmosphere.
- Soil_gas wikiPageWikiLink Atmosphere_of_Earth.
- Soil_gas wikiPageWikiLink Atmospheric_methane.
- Soil_gas wikiPageWikiLink Carbon_dioxide.
- Soil_gas wikiPageWikiLink Category:Soil.
- Soil_gas wikiPageWikiLink Category:Soil_physics.
- Soil_gas wikiPageWikiLink Diffusion.
- Soil_gas wikiPageWikiLink Ficks_law_of_diffusion.
- Soil_gas wikiPageWikiLink Ficks_laws_of_diffusion.
- Soil_gas wikiPageWikiLink Hydrocarbon.
- Soil_gas wikiPageWikiLink Kinetic_theory.
- Soil_gas wikiPageWikiLink Kinetic_theory_of_gases.
- Soil_gas wikiPageWikiLink Nitrogen.
- Soil_gas wikiPageWikiLink Oxygen.
- Soil_gas wikiPageWikiLink Radon.
- Soil_gas wikiPageWikiLink Random_walk.
- Soil_gas wikiPageWikiLink Respiration_(physiology).
- Soil_gas wikiPageWikiLink Root.
- Soil_gas wikiPageWikiLink Soil.
- Soil_gas wikiPageWikiLink Soil_structure.
- Soil_gas wikiPageWikiLink Volatile_organic_compound.
- Soil_gas wikiPageWikiLinkText "Soil gas".
- Soil_gas wikiPageWikiLinkText "root respiration".
- Soil_gas wikiPageWikiLinkText "soil gas".
- Soil_gas hasPhotoCollection Soil_gas.
- Soil_gas wikiPageUsesTemplate Template:Refimprove.
- Soil_gas wikiPageUsesTemplate Template:Reflist.
- Soil_gas wikiPageUsesTemplate Template:Soil-sci-stub.
- Soil_gas subject Category:Soil.
- Soil_gas subject Category:Soil_physics.
- Soil_gas hypernym Gases.
- Soil_gas type Company.
- Soil_gas type Physic.
- Soil_gas comment "Soil gases are the gases found in the air space between soil components. The primary natural soil gases include nitrogen, carbon dioxide and oxygen. The oxygen is critical because it allows for respiration of both plant roots and soil organisms. Other natural soil gases are atmospheric methane and radon.".
- Soil_gas label "Soil gas".
- Soil_gas sameAs m.063z179.
- Soil_gas sameAs Markluft.
- Soil_gas sameAs Q7554918.
- Soil_gas sameAs Q7554918.
- Soil_gas wasDerivedFrom Soil_gas?oldid=678435290.
- Soil_gas isPrimaryTopicOf Soil_gas.