Soil Health/Soil Quality

• Multiple functions of soil in the landscape

• Complex, ‘living’ system

  • 10,000 different species in 1-g of soil
  • 1.5 times as many individual organisms in a teaspoon of soil as people on earth -Doran et al., 1996

• Vulnerable resource

  • 100-400 years to create 1-cm of topsoil -Jenny, 1980

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