Bifalgorithm post · Introduction to soil science · Soil Aeration

Gases Move

Gases Move (Introduction to soil science · Soil Aeration) — "Mass flow moves gases from areas of high pressure to low pressure, while diffusion moves individua…

Ideas in this flowchart

  • Gas movement in soil depends on pressure, concentration, and soil moisture.
  • Mass flow moves gases from areas of high pressure to low pressure.
  • Diffusion moves individual gases from areas of high concentration to low concentration.
  • Diffusion is much slower than mass flow.
  • Diffusion is especially slow through water.
  • Increasing soil moisture fills soil pores with water.
  • Water-filled pores greatly restrict the movement of gases.
  • The restricted gases include oxygen and other gases.
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Gases Move

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Introduction to soil science

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"Mass flow moves gases from areas of high pressure to low pressure, while diffusion moves individual gases from high concentration to low concentration. Diffusion is much slower than mass flow and is especially slow through water. Increasing soil moisture fills pores with water and greatly restricts the movement of oxygen and other gases."

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