Articles | Volume 11, issue 21
Biogeosciences, 11, 6047–6065, 2014
https://doi.org/10.5194/bg-11-6047-2014

Special issue: Towards a full GHG balance of the biosphere

Biogeosciences, 11, 6047–6065, 2014
https://doi.org/10.5194/bg-11-6047-2014

Research article 07 Nov 2014

Research article | 07 Nov 2014

N2O, NO, N2 and CO2 emissions from tropical savanna and grassland of northern Australia: an incubation experiment with intact soil cores

C. Werner et al.

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Short summary
Atmospheric loss of N from savanna soil was dominated by N2 emissions (82-99% of total N loss to atmosphere). Nitric oxide emissions significantly contributed at 50% WFPS; high temperatures and N2O emissions were negligible. Based on a simple upscale approach we estimated annual loss of N to the atmosphere at 7.5kg yr-1. N2O emission was low for most samples, but high for a small subset of cores at 75% WFPS (due to short periods where such conditions occur this has little effect on totals).
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