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Utilizing Soil Density Fractionation to Separate Distinct Soil Carbon Pools
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JoVE Journal Environment
Utilizing Soil Density Fractionation to Separate Distinct Soil Carbon Pools

Utilizing Soil Density Fractionation to Separate Distinct Soil Carbon Pools

DOI:
10.3791/64759-v

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09:19 min

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December 16, 2022

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, , ,
1Department of Crop and Soil Sciences,Oregon State University, 2USDA Forest Service

Chapters

  • 00:04Introduction
  • 01:04Dissolution of Soil in Sodium Polytungstate (SPT)
  • 02:04Performing Coarse Soil Fractionation
  • 04:40Washing and Collection of the Heavy-Fraction Material
  • 05:46Washing, Collection, and Weighing of the Light-Fraction Material
  • 06:49Results: Analyzing Soil Carbon Pools After Soil Density Fractionation
  • 08:20Conclusion

Summary

Automatic Translation

Automatic Translation

Soil density fractionation separates soil organic matter into distinct pools with differing stabilization mechanisms, chemistries, and turnover times. Sodium polytungstate solutions with specific densities allow the separation of free particulate organic matter and mineral-associated organic matter, resulting in organic matter fractions suitable for describing the soil response to management and climate change.

Tags

Keywords: Soil Density FractionationSoil Carbon PoolsSoil Carbon StabilizationMineral Organic AssociationLight Fraction Organic MatterHeavy Fraction Mineral ComponentsSoil Carbon Turnover RatesSoil Carbon SequestrationSPT SolutionCentrifugationSoil DispersionSoil Aggregates

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