Ideas in this flowchart

• Soil aeration controls oxygen availability and influences roots, microorganisms, and soil processes.
• Biological oxygen requirements
• Roots require oxygen for aerobic respiration.
• Aerobic microorganisms require oxygen.
• Consequences of poor aeration
• Insufficient aeration can cause roots to suffocate and die.
• Poor aeration slows decomposition.
• Poor aeration changes nutrient cycling.
• Poor aeration changes mineral reactions.
• Poor aeration changes greenhouse gas emissions.
• Poor aeration changes soil development.
• Conditions associated with decreased aeration
• Aeration generally decreases as soil moisture increases.
• Aeration generally decreases with soil depth.
• Aeration generally decreases as clay content increases.
• Aeration generally decreases as landscape wetness increases.