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Utilizing Soil Density Fractionation to Separate Distinct Soil Carbon Pools

Article DOI: 10.3791/64759-v • 09:19 min • December 16th, 2022
December 16th, 2022 •
*1,2, *1, *1, *1
1Department of Crop and Soil Sciences, Oregon State University, 2USDA Forest Service
* These authors contributed equally

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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.

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Soil Density Fractionation Distinct Soil Carbon Pools Soil Carbon Stabilization Research Functional Pools Of Soil Carbon Reproducibility Diverse Soil Types Mineral Association Light Fraction Organic Matter Heavy Fraction Mineral Components Soil Carbon Sequestration Soil Carbon Turnover Rates Mineral Organic Association Pool Size Sample Mass Carbon Content Recovery Rate Air-dried Soil Sample SPT Solution Non-water-stable Aggregates
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