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Title: Increased carbon stabilization in Australian ferrosol with high carbon saturation deficit
Contributor(s): Khandakar, Tania (author); Guppy, Christopher (author)orcid ; Tighe, Matthew (author); Rabbi, Sheikh M F (author); Daniel, Heiko (author)
Publication Date: 2017
DOI: 10.1080/00103624.2017.1395447
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Abstract: The concept of carbon (C) saturation implies that soils have a finite capacity to store C in a stable form, depending on their silt + clay content. We hypothesized that the stabilization of added organic C would be low in C saturated soil. We tested experimentally the influence of C saturation deficit on stabilization of added grass residue. We incubated 12 highly weathered, oxic soil samples collected from three contrasting land uses (i.e. cropping, improved pasture, and forest) with grass residue for 8 months. Carbon saturation deficit of the forest soils was lower than pasture and cropping soils. After incubation, we found increases in silt + clay associated C in grass residue treatment positively correlated with C saturation deficit of soils. Our results suggest that stabilization of added C was high in soil with low C saturation level and hence higher C saturation deficit.
Publication Type: Journal Article
Source of Publication: Communications in Soil Science and Plant Analysis, 48(15), p. 1772-1780
Publisher: Taylor & Francis Inc
Place of Publication: United States of America
ISSN: 1532-2416
Field of Research (FOR): 050301 Carbon Sequestration Science
070306 Crop and Pasture Nutrition
050304 Soil Chemistry (excl. Carbon Sequestration Science)
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article
School of Environmental and Rural Science

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