Skip to Main Content
Turnover of intra- and extra-aggregate organic matter at the silt-size scaleAuthor(s): I. Virto; C. Moni; C. Swanston; C. Chenu
Source: Geoderma. 156: 1-10.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
PDF: View PDF (804.52 KB)
DescriptionTemperate silty soils are especially sensitive to organic matter losses associated to some agricultural management systems. Long-term preservation of organic C in these soils has been demonstrated to occur mainly in the silt- and clay-size fractions, although our knowledge about the mechanisms through which it happens remains unclear. Although organic matter in such fractions is usually assumed to be present in the form of organo-mineral complexes, a large percentage of this fraction appears to be micro-aggregated. In this study we hypothesized that slaking-resistant silt-size aggregates should be preferential sites of long-term organic matter preservation in soils, by physical entrapment that would allow for stabilization by interaction with mineral surfaces.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationVirto, I.; Moni, C.; Swanston, C.; Chenu, C. 2010. Turnover of intra- and extra-aggregate organic matter at the silt-size scale. Geoderma. 156: 1-10.
Keywordssoil aggregation, organic matter turnover, 13C, microaggregates, size and density fractionation
- Soil organic matter fractions in experimental forested watersheds
- Chemical and mineral control of soil carbon turnover in abandoned tropical pastures
- 15N-CPMAS nuclear magnetic resonace spectroscopy and biological stability of soil organic nitrogen in whole soil and particle-size fractions
XML: View XML