Organic matter contributions to nitrous oxide emissions following nitrate addition are not proportional to substrate-induced soil carbon priming
dc.contributor.author | Li, Y | |
dc.contributor.author | Moinet, GYK | |
dc.contributor.author | Clough, Timothy | |
dc.contributor.author | Whitehead, D | |
dc.coverage.spatial | Netherlands | |
dc.date.accessioned | 2022-09-11T23:26:59Z | |
dc.date.available | 2022-08-27 | |
dc.date.issued | 2022-12-10 | |
dc.date.submitted | 2022-08-21 | |
dc.date.updated | 2022-09-01T00:59:28Z | |
dc.description.abstract | The addition of carbon (C) substrate often modifies the rate of soil organic matter (SOM) decomposition. This is known as the priming effect. Nitrous oxide (N₂O) emissions from soil are also linked to C substrate dynamics; however, the relationship between the priming effect and N₂O emissions from soil is not understood. This study aimed to investigate the effects of C and N substrate addition on the linkages between SOM priming and N₂O emissions. We applied ¹³C-labelled substrates (acetate, butyrate, glucose; 80 μg C g¯¹), with water as a control, and ¹⁵N-labelled N (300 μg N g¯¹ soil, potassium nitrate) to three different soils, and, after 3 days, we measured the effects on the priming of SOM and sources of N₂O emission. Carbon substrate addition increased both CO₂- and SOM-derived N₂O emissions in the presence of exogenous N. Emissions of CO₂ and N₂O from soils with added glucose (mean ± standard deviation, 0.73 ± 0.13 μmol m¯² s¯¹ and 21.4 ± 12.1 mg N m¯² h¯¹) were higher (p < 0.05) than those from soils treated with acetate (0.64 ± 0.11 μmol m¯² s¯¹ and 10.9 ± 6.5 mg N m¯² h¯¹) or butyrate (0.61 ± 0.11 μmol m¯² s¯¹ and 11.0 ± 6.6 mg N m¯² h¯¹), respectively. Acetate addition induced a stronger (p < 0.05) priming effect on soil C (0.07 ± 0.09 μmol C m¯² s¯¹) than that for glucose (0.02 ± 0.10 μmol C m¯² s¯¹), while butyrate addition resulted in negative priming (−0.09 ± 0.05 μmol C m¯² s¯¹). SOM-derived N₂O emissions were relatively low from soils with butyrate addition (1.4 ± 1.5 mg N m¯² h¯¹) compared with acetate (2.9 ± 2.3 mg N m¯² h¯¹) or glucose (9.2 ± 4.5 mg N m¯² h¯¹). There was no clear relationship between the priming effect and SOM-derived N₂O emissions. The observed priming effect related to the potential electron donor supply of the C substrates was not observed. There is a need to further examine the role of soil priming in relation to soil N₂O emissions. | |
dc.format.extent | 8 pages | |
dc.format.medium | Print-Electronic | |
dc.identifier | S0048-9697(22)05373-6 | |
dc.identifier | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=elements_prod&SrcAuth=WosAPI&KeyUT=WOS:000863254000010&DestLinkType=FullRecord&DestApp=WOS_CPL | |
dc.identifier.doi | 10.1016/j.scitotenv.2022.158274 | |
dc.identifier.eissn | 1879-1026 | |
dc.identifier.issn | 0048-9697 | |
dc.identifier.other | 36030860 (pubmed) | |
dc.identifier.uri | https://hdl.handle.net/10182/15417 | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.relation | The original publication is available from Elsevier - https://doi.org/10.1016/j.scitotenv.2022.158274 - http://dx.doi.org/10.1016/j.scitotenv.2022.158274 | |
dc.relation.isPartOf | Science of the Total Environment | |
dc.relation.uri | https://doi.org/10.1016/j.scitotenv.2022.158274 | |
dc.rights | © 2022 Elsevier B.V. All rights reserved. | |
dc.subject | nitrous oxide emissions | |
dc.subject | organic acids | |
dc.subject | priming | |
dc.subject | soil organic primer | |
dc.subject.mesh | Carbon Dioxide | |
dc.subject.mesh | Nitrates | |
dc.subject.mesh | Carbon | |
dc.subject.mesh | Nitrous Oxide | |
dc.subject.mesh | Water | |
dc.subject.mesh | Organic Chemicals | |
dc.subject.mesh | Butyrates | |
dc.subject.mesh | Glucose | |
dc.subject.mesh | Soil | |
dc.subject.mesh | Fertilizers | |
dc.subject.mesh | Agriculture | |
dc.title | Organic matter contributions to nitrous oxide emissions following nitrate addition are not proportional to substrate-induced soil carbon priming | |
dc.type | Journal Article | |
lu.contributor.unit | LU | |
lu.contributor.unit | LU|Agriculture and Life Sciences | |
lu.contributor.unit | LU|Agriculture and Life Sciences|SOILS | |
lu.contributor.unit | LU|Research Management Office | |
lu.contributor.unit | LU|Research Management Office|OLD QE18 | |
lu.identifier.orcid | 0000-0002-5978-5274 | |
pubs.article-number | 158274 | |
pubs.issue | Part 2 | |
pubs.publication-status | Published | |
pubs.publisher-url | http://dx.doi.org/10.1016/j.scitotenv.2022.158274 | |
pubs.volume | 851 |