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dc.contributor.authorSanjari, Gen_US
dc.contributor.authorYu, Bofuen_US
dc.contributor.authorGhadiri, Hosseinen_US
dc.contributor.authorA.A. Ciesiolka, Cyrilen_US
dc.contributor.authorRose, Calvinen_US
dc.date.accessioned2017-05-03T11:33:52Z
dc.date.available2017-05-03T11:33:52Z
dc.date.issued2009en_US
dc.identifier.issn00049573en_US
dc.identifier.doi10.1071/SR09032en_US
dc.identifier.urihttp://hdl.handle.net/10072/29407
dc.description.abstractThe time-controlled grazing (TC grazing) has become popular in Australia and elsewhere in the world to provide graziers and ranchers with improved productivity over traditional practices. However, this grazing system, which involves short periods of intensive grazing, has raised concerns about the sustainability and environmental impacts on water and soil resources and ecosystem health generally. A runoff catchment experiment at the catchment scale was established on the grazing property 'Currajong' in the south-east region of Queensland, Australia to investigate the effects of continuous and TC grazing on runoff and sediment generation from 2001 to 2006. Sediment loss reduced significantly under TC grazing compared with continuous grazing irrespective of the size of runoff events. This effect is more pronounced in the catchments with soils of gentler slopes and greater depths. The reduction in soil erosion was achieved despite the fact that the increase in ground cover under TC grazing had little effect on runoff coefficient or runoff. Decrease in runoff in relation to the increase in surface cover only occurred for small events, whereas for large rainfall events, runoff generated irrespective of the level of ground cover. This study showed that ground cover is a key driver in reducing sediment concentration, resulting in a significantly lower sediment loss under TC grazing. In the study area a minimum of 70% of surface cover as threshold appears to be needed to efficiently protect the soil surface from erosive forces of rain and runoff and to control soil erosion. The results also indicate that TC grazing has a superior capability to produce and maintain a higher level of ground cover (up to 90%) than continuous grazing (up to 65%). The long rest periods in TC grazing are seen as being the major contributor to soil and pasture recovery after intensive defoliations by grazing animals, leading to an increase in above-ground organicmaterial and thus surface cover over time.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.format.extent281051 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherCSIRO Publishingen_US
dc.publisher.placeAustraliaen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom796en_US
dc.relation.ispartofpageto808en_US
dc.relation.ispartofissue8en_US
dc.relation.ispartofjournalAustralian Journal of Soil Researchen_US
dc.relation.ispartofvolume47en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchNatural Resource Managementen_US
dc.subject.fieldofresearchcode050209en_US
dc.titleEffects of time-controlled grazing on runoff and sediment lossen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.rights.copyrightCopyright 2009 CSIRO. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_US
gro.date.issued2015-06-05T03:55:20Z
gro.hasfulltextFull Text


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