Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/121021
Citations
Scopus Web of Science® Altmetric
?
?
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSingh, M.-
dc.contributor.authorSarkar, B.-
dc.contributor.authorBolan, N.S.-
dc.contributor.authorOk, Y.S.-
dc.contributor.authorChurchman, G.J.-
dc.date.issued2019-
dc.identifier.citationJournal of Hazardous Materials, 2019; 374:11-19-
dc.identifier.issn0304-3894-
dc.identifier.issn1873-3336-
dc.identifier.urihttp://hdl.handle.net/2440/121021-
dc.description.abstractThe interactive effects of the types and contents of soil clay fractions (SCFs) and plant-residue addition rates on soil organic carbon (SOC) stabilisation are largely unknown. We conducted incubation experiments by amending a sandy soil sample with kaolinitic-illitic, smectitic and allophanic SCFs and adding wheat residues to the mineral mixtures to compare their C stabilisation capacity. The rate of carbon (C) decomposition was higher in the kaolinitic-illitic SCF followed by smectitic and allophanic clay minerals. The supply of easily degradable C substrate from decomposing residues markedly influenced the SCFs' abilities to stabilise SOC. The removal of sesquioxides from the SCFs significantly decreased their C stabilisation capacity, which coincided with a decrease in the dehydrogenase activity of the mineral-residue mixture. The allophanic SCF showed the least microbial activity and the greatest C stabilisation due to having a higher proportion of micropores (75%). The high C stabilisation capacity of allophanic SCF could also be explained by its high specific surface area (119 m2  g-1). The results of this study are helpful to understand the role of various SCFs in stabilising added C originating from external wheat residue addition but warrant further validation under field conditions.-
dc.description.statementofresponsibilityMandeep Singh, Binoy Sarkar, Nanthi S.Bolan, Yong Sik Ok, Gordon Jock Churchman-
dc.language.isoen-
dc.publisherElsevier-
dc.rights© 2019 Elsevier B.V. All rights reserved.-
dc.subjectMicrobial activity-
dc.subjectOrganic carbon stabilisation-
dc.subjectRespiration-
dc.subjectSoil clay fractions-
dc.subjectWheat plant residue-
dc.titleDecomposition of soil organic matter as affected by clay types, pedogenic oxides and plant residue addition rates-
dc.typeJournal article-
dc.identifier.doi10.1016/j.jhazmat.2019.03.135-
dc.relation.granthttp://purl.org/au-research/grants/arc/DP140100323-
pubs.publication-statusPublished-
Appears in Collections:Agriculture, Food and Wine publications
Aurora harvest 4

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.