Nitrogen Fertilization Reduces the Capacity of Soils to Take up Atmospheric Carbonyl Sulphide

Soils are an important carbonyl sulphide (COS) sink. However, they can also act as sources of COS to the atmosphere. Here we demonstrate that variability in the soil COS sink and source strength is strongly linked to the available soil inorganic nitrogen (N) content across a diverse range of biomes...

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Bibliographic Details
Published inSoil systems Vol. 2; no. 4; pp. 62 - 18
Main Authors Kaisermann, Aurore, Jones, Sam P., Wohl, Steven, Ogée, Jérôme, Wingate, Lisa
Format Journal Article
LanguageEnglish
Published MDPI 01.12.2018
Subjects
Environmental Sciences
Life Sciences
microbial community
COS production
carbonic anhydrase
ammonium
sulfur
nitrate
COS uptake
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ISSN2571-8789
2571-8789
DOI10.3390/soilsystems2040062

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Summary:Soils are an important carbonyl sulphide (COS) sink. However, they can also act as sources of COS to the atmosphere. Here we demonstrate that variability in the soil COS sink and source strength is strongly linked to the available soil inorganic nitrogen (N) content across a diverse range of biomes in Europe. We revealed in controlled laboratory experiments that a one-off addition of ammonium nitrate systematically decreased the COS uptake rate whilst simultaneously increasing the COS production rate of soils from boreal and temperate sites in Europe. Furthermore, we found strong links between variations in the two gross COS fluxes, microbial biomass, and nitrate and ammonium contents, providing new insights into the mechanisms involved. Our findings provide evidence for how the soil–atmosphere exchange of COS is likely to vary spatially and temporally, a necessary step for constraining the role of soils and land use in the COS mass budget.
ISSN:2571-8789
2571-8789
DOI:10.3390/soilsystems2040062