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Biogeosciences An interactive open-access journal of the European Geosciences Union
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BG | Volume 15, issue 22
Biogeosciences, 15, 7043–7057, 2018
https://doi.org/10.5194/bg-15-7043-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 7043–7057, 2018
https://doi.org/10.5194/bg-15-7043-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 27 Nov 2018

Research article | 27 Nov 2018

Alteration of nitrous oxide emissions from floodplain soils by aggregate size, litter accumulation and plant–soil interactions

Martin Ley et al.
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Cited articles  
Baggs, E. M.: A review of stable isotope techniques for N2O source partitioning in soils: recent progress, remaining challenges and future considerations, Rapid Commun. Mass Spectrom., 22, 1664–1672, https://doi.org/10.1002/rcm.3456, 2008. 
Baggs, E. M.: Soil microbial sources of nitrous oxide: Recent advances in knowledge, emerging challenges and future direction, Curr. Opin. Environ. Sustain., 3, 321–327, https://doi.org/10.1016/j.cosust.2011.08.011, 2011. 
Balaine, N., Clough, T. J., Beare, M. H., Thomas, S. M., Meenken, E. D., and Ross, J. G.: Changes in Relative Gas Diffusivity Explain Soil Nitrous Oxide Flux Dynamics, Soil Sci. Soc. Am. J., 77, 1496–1505, https://doi.org/10.2136/sssaj2013.04.0141, 2013. 
Baldwin, D. S. and Mitchell, A. M.: The effects of drying and re-flooding on the sediment and soil nutrient dynamics of lowland river–floodplain systems: a synthesis, Regul. Rivers Res. Manage., 16, 457–467, https://doi.org/10.1002/1099-1646(200009/10)16:5<457::AID-RRR597>3.3.CO;2-2, 2000. 
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Our laboratory study shows how microhabitat formation linked to soil aggregates, litter accumulation and plant soil interactions affects conditions under which hot moments of enhanced N2O emissions from floodplain soils during the drying phase after saturation occur. Larger aggregate size led to higher integrated flux rates when soil was unamended or mixed with leaf litter, whereas planting with willow significantly reduced emissions. Also, emission time patterns differed among the treatments.
Our laboratory study shows how microhabitat formation linked to soil aggregates, litter...
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