Measuring denitrification and the N2O:(N2O + N2) emission ratio from terrestrial soils

A - Papers appearing in refereed journals

Friedl, J., Cardenas, L. M., Clough, T. J., Dannenmann, M., Hu, C. and Scheer, C. 2020. Measuring denitrification and the N2O:(N2O + N2) emission ratio from terrestrial soils. Current Opinion in Environmental Sustainability. 47, pp. 61-71. https://doi.org/10.1016/j.cosust.2020.08.006

AuthorsFriedl, J., Cardenas, L. M., Clough, T. J., Dannenmann, M., Hu, C. and Scheer, C.
Abstract

Denitrification, a significant pathway of reactive N-loss from terrestrial soils, impacts on agricultural production and the environment. Net production and emission of the denitrification product nitrous oxide (N2O) is readily quantifiable, but measuring denitrification’s final product, dinitrogen (N2), against a high atmospheric background remains challenging. This review examines methods quantifying both N2 and N2O emissions, based on inhibitors, helium/O2 atmosphere exchange, and isotopes. These methods are evaluated regarding their capability to account for pathways of N2 and N2O production and we suggest quality parameters for measuring denitrification from controlled environments to the field scale. Our appraisal shows that method combinations, together with real-time monitoring and soil-gas diffusivity modelling, have the potential to significantly improve our quantitative understanding for denitrification from upland soils. Requirements for instrumentation and experimental setups however highlight the need to develop more mobile and easily accessible field methods to constrain denitrification from terrestrial soils across scales.

Year of Publication2020
JournalCurrent Opinion in Environmental Sustainability
Journal citation47, pp. 61-71
Digital Object Identifier (DOI)https://doi.org/10.1016/j.cosust.2020.08.006
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
OECD
Funder project or codeS2N - Soil to Nutrition - Work package 2 (WP2) - Adaptive management systems for improved efficiency and nutritional quality
Publisher's version
Output statusPublished
Publication dates
Online24 Sep 2020
Publication process dates
Accepted10 Aug 2020
PublisherElsevier

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