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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
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.
