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Physical Fractionation of Soil and Organic Matter in Primary Particle Size and Density Separates

  • Bent T. Christensen
Part of the Advances in Soil Science book series (SOIL, volume 20)

Abstract

The soil organic matter (SOM) pool encompasses plant, animal, and microbial residues in all stages of decay and a diversity of heterogeneous organic substances intimately associated with inorganic soil components. The soil microbiota and fine roots may also be considered part of the SOM pool. The turnover of the different SOM components varies continuously due to the complex interaction of biological, chemical, and physical processes in soil. The complexity of SOM and its importance to soil fertility have challenged generations of soil scientists, and numerous studies, of which some date back more than two centuries (see historical review in Kononova, 1961), have covered a vast array of aspects of SOM.

Keywords

Soil Organic Matter Content Light Fraction Heavy Fraction Ultrasonic Dispersion Fine Clay 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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