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Measuring Forest Sustainability: How Forest Harvesting Affects Key Indicators of Soil Quality. Alicia L. Kiyvyra FS 533. Soil Quality. The capacity of a soil to FUNCTION within ecosystem boundaries to: Promote root growth Accept, hold, and supply water Hold, supply, and cycle nutrients

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measuring forest sustainability how forest harvesting affects key indicators of soil quality

Measuring Forest Sustainability: How Forest Harvesting Affects Key Indicators of Soil Quality

Alicia L. Kiyvyra

FS 533

soil quality
Soil Quality

The capacity of a soil to FUNCTION within ecosystem boundaries to:

  • Promote root growth
  • Accept, hold, and supply water
  • Hold, supply, and cycle nutrients
  • Promote optimal gas exchange
  • Promote biological activity
key soil quality indicators
Key Soil Quality Indicators

Physical Properties

  • Bulk Density
  • Macroporosity
  • Depth of A Horizon

Chemical Properties

  • Total C, N, and P
  • Mineralizable Nitrogen
  • pH
  • C:N
post harvest effects soil physical properties
Post Harvest Effects: Soil Physical Properties
  • Soil compaction increases bulk density
  • Decrease in soil porosity
  • Change in surface hydrology
  • Effects are worse for wet-harvested sites
slide6

Least Limiting Water Range

Kelting et al. 1990

take home message
Take Home Message
  • Tree harvesting can negatively impact key indicators of soil quality
  • Increase in bulk density/reduction in porosity can have long term effects on water availability
  • LLWR is a sensitive indicator for monitoring soil water dynamics in plantation forestry