Login | Request Account (DAF staff only)

What determines soil organic carbon stocks in the grazing lands of north-eastern Australia?

Share this record

Add to FacebookAdd to LinkedinAdd to XAdd to WechatAdd to Microsoft_teamsAdd to WhatsappAdd to Any

Export this record

View Altmetrics

Allen, D. E., Pringle, M. J., Bray, S. G., Hall, T. J., O'Reagain, P. J., Phelps, D., Cobon, D. H., Bloesch, P. M. and Dalal, R. C. (2013) What determines soil organic carbon stocks in the grazing lands of north-eastern Australia? Soil Research, 51 (7-8). pp. 695-706. ISSN 1838675X (ISSN)


Article Link: http://dx.doi.org/10.1071/SR13041


This study aimed to unravel the effects of climate, topography, soil, and grazing management on soil organic carbon (SOC) stocks in the grazing lands of north-eastern Australia. We sampled for SOC stocks at 98 sites from 18 grazing properties across Queensland, Australia. These samples covered four nominal grazing management classes (Continuous, Rotational, Cell, and Exclosure), eight broad soil types, and a strong tropical to subtropical climatic gradient. Temperature and vapour-pressure deficit explained >80% of the variability of SOC stocks at cumulative equivalent mineral masses nominally representing 0-0.1 and 0-0.3m depths. Once detrended of climatic effects, SOC stocks were strongly influenced by total standing dry matter, soil type, and the dominant grass species. At 0-0.3m depth only, there was a weak negative association between stocking rate and climate-detrended SOC stocks, and Cell grazing was associated with smaller SOC stocks than Continuous grazing and Exclosure. In future, collection of quantitative information on stocking intensity, frequency, and duration may help to improve understanding of the effect of grazing management on SOC stocks. Further exploration of the links between grazing management and above- and below-ground biomass, perhaps inferred through remote sensing and/or simulation modelling, may assist large-area mapping of SOC stocks in northern Australia. © CSIRO 2013.

Item Type:Article
Business groups:Animal Science
Additional Information:Reproduced with permission from © CSIRO Publishing. Access to published version is available via Publisher’s website.
Keywords:Climatic effects Climatic gradients Grazing management Northern Australia Quantitative information Soil organic carbon Soil organic Carbon stocks Stocking rates Computer simulation Soils biomass dominance dry matter grass numerical model remote sensing soil organic matter soil type Australia Queensland
Subjects:Agriculture > Agriculture (General) > Soils. Soil science > Soil and crops. Soil-plant relationships. Soil productivity
Animal culture > Rangelands. Range management. Grazing
Live Archive:23 Jun 2014 05:08
Last Modified:27 Sep 2021 03:50

Repository Staff Only: item control page


Downloads per month over past year

View more statistics