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Modelling N2O emissions from organic fertilisers for LCA inventories

Meier, Matthias S.; Schader, Christian; Berner, Alfred and Gattinger, Andreas (2012) Modelling N2O emissions from organic fertilisers for LCA inventories. Paper at: 8th International Conference on Life Cycle Assessment in the Agri-Food Sector, Saint-Malo, France, 1-4 October 2012. [Completed]

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Summary

Apart from mineral fertilisers, organic fertilisers act mainly via the soil C-N pool in order to provide available nitrogen to plants. This different mode of action is not reflected so far in the current IPCC N2O emission model. Here we propose a simple model to calculate N2O emissions from organic fertilisers and plant residues. It considers the long-term immobilisation of N within stable organic matter in the soil as well as the mineralisation of additional N from the soil pool. A first test with field data showed reliable simulations of measured N2O emissions. By comparing values generated by our model with values generated by the IPCC model we show that the IPCC model may overestimate emissions from organic fertilisers. Therefore, within LCA inventories modelling of soil borne N2O emissions from organic fertilisers and crop residues should consider the different dynamics of N via the C-N pool in the soil.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:soil borne nitrous oxide emissions, agricultural inventory data, organic fertilisers, crop residues, Sozioökonomie, Life cycle assessment, Ökobilanzierung
Subjects: Crop husbandry > Composting and manuring
Environmental aspects > Air and water emissions
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil Sciences
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Sustainability > Climate
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Socio-Economics
Deposited By: Schader, Dr. Christian
ID Code:24707
Deposited On:25 Nov 2013 22:16
Last Modified:10 Nov 2020 08:20
Document Language:English
Status:Unpublished
Refereed:Not peer-reviewed

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