Characterization of Soil Organic Matter in Aggregates and Size-Density Fractions by Solid State 13C CPMAS NMR Spectroscopy

S. M.Fazle Rabbi, Rasmus Linser, James M. Hook, Brian R. Wilson, Peter V. Lockwood, Heiko Daniel, Iain M. Young

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Understanding the changes in soil organic matter (SOM) composition during aggregate formation is crucial to explain the stabilization of SOM in aggregates. The objectives of this study were to investigate (i) the composition of SOM associated with different aggregates and size-density fractions and (ii) the role of selective preservation in determining the composition of organic matter in aggregate and size-density fractions. Surface soil samples were collected from an Alfisol on the Northern Tablelands of NSW, Australia, with contrasting land uses of native pasture, crop-pasture rotation and woodland. Solid-state 13C cross-polarization and magic angle spinning (CPMAS) nuclear magnetic resonance (NMR) spectroscopy was used to determine the SOM composition in macroaggregates (250-2000 μm), microaggregates (53-250 μm), and
Original languageEnglish (US)
Pages (from-to)1523-1537
Number of pages15
JournalCommunications in Soil Science and Plant Analysis
Volume45
Issue number11
DOIs
StatePublished - Jan 1 2014
Externally publishedYes

ASJC Scopus subject areas

  • Soil Science
  • Agronomy and Crop Science

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