Articles | Volume 13, issue 10
Biogeosciences, 13, 2927–2944, 2016
https://doi.org/10.5194/bg-13-2927-2016

Special issue: OzFlux: a network for the study of ecosystem carbon and water...

Biogeosciences, 13, 2927–2944, 2016
https://doi.org/10.5194/bg-13-2927-2016

Research article 18 May 2016

Research article | 18 May 2016

Carbon budgets for an irrigated intensively grazed dairy pasture and an unirrigated winter-grazed pasture

John E. Hunt et al.

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Short summary
Intensification of dairying is rapid in New Zealand, with unknown impact on stocks of soil carbon (C). We investigated changes of soil C over one year for an irrigated, fertilised, rotationally-grazed pasture and an unirrigated winter grazed pasture. The irrigated pasture gained more C from net CO2 uptake, excreta deposition and fertiliser application than was lost by grazing. The unirrigated pasture lost a small amount of C. Intensive dairy practices may thus increase soil C in the short term.
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