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Sorption and desorption of organic matter in soils as affected by phosphate

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  • NSTL
  • Elsevier
The contribution of different adsorption processes to soil organic matter (SOM) stabilization and the consequences of the intensification of land use on the adsorption of SOM are not yet fully understood. Therefore, this study aimed to explore the adsorption of dissolved organic carbon (DOC) in soils as well as desorption of organic carbon (OC) caused by phosphate addition. We conducted desorption and sorption experiments with DOC, phosphate (Na2HPO4), and chloride (KCl) in topsoil and subsoil samples from a Ferralsol, an Andosol, and a Podzol. Furthermore, we quantified the size of DOC by size-exclusion chromatography.

Soil organic matter stabilizationSorptionLigand-exchange surface complexationPhosphorus additionSoil organic matter lossPhosphorus fertilization

Spohn, Marie、Diakova, Katerina、Aburto, Felipe、Doetterl, Sebastian、Borovec, Jakub

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Univ Bayreuth, Bayreuth Ctr Ecol & Environm Res BayCEER, Soil Biogeochem, Dr Hans Frisch Str 1-3, D-95448 Bayreuth, Germany

Univ Concepcion, Lab Invest Suelos Aguas & Bosques LISAB, Fac Ciencias Forestales, Victoria 631, Concepcion, Chile

Swiss Fed Inst Technol, Dept Environm Syst Sci, Swiss Fed Inst Technol, Zurich, Switzerland

Univ South Bohemia, SoWa Res Infrastruct, Biol Ctr CAS, Ceske Budejovice, Czech Republic

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2022

10.1016/j.geoderma.2021.115377

Geoderma: An International Journal of Soil Science

Geoderma: An International Journal of Soil Science

ISSN：0016-7061
年,卷(期)：2022.405
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