liu.seSök publikationer i DiVA
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Forest streams are important sources for nitrous oxide emissions
Aarhus Univ, Denmark; Swedish Univ Agr Sci, Sweden.
Linköpings universitet, Institutionen för tema, Tema Miljöförändring. Linköpings universitet, Filosofiska fakulteten.ORCID-id: 0000-0003-0038-2152
Swedish Univ Agr Sci, Sweden; Univ Koblenz Landau, Germany.
Univ Cincinnati, OH USA.
Visa övriga samt affilieringar
2020 (Engelska)Ingår i: Global Change Biology, ISSN 1354-1013, E-ISSN 1365-2486, Vol. 26, nr 2, s. 629-641Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Streams and river networks are increasingly recognized as significant sources for the greenhouse gas nitrous oxide (N2O). N2O is a transformation product of nitrogenous compounds in soil, sediment and water. Agricultural areas are considered a particular hotspot for emissions because of the large input of nitrogen (N) fertilizers applied on arable land. However, there is little information on N2O emissions from forest streams although they constitute a major part of the total stream network globally. Here, we compiled N2O concentration data from low-order streams (~1,000 observations from 172 stream sites) covering a large geographical gradient in Sweden from the temperate to the boreal zone and representing catchments with various degrees of agriculture and forest coverage. Our results showed that agricultural and forest streams had comparable N2O concentrations of 1.6 +/- 2.1 and 1.3 +/- 1.8 mu g N/L, respectively (mean +/- SD) despite higher total N (TN) concentrations in agricultural streams (1,520 +/- 1,640 vs. 780 +/- 600 mu g N/L). Although clear patterns linking N2O concentrations and environmental variables were difficult to discern, the percent saturation of N2O in the streams was positively correlated with stream concentration of TN and negatively correlated with pH. We speculate that the apparent contradiction between lower TN concentration but similar N2O concentrations in forest streams than in agricultural streams is due to the low pH (amp;lt;6) in forest soils and streams which affects denitrification and yields higher N2O emissions. An estimate of the N2O emission from low-order streams at the national scale revealed that ~1.8 x 10(9) g N2O-N are emitted annually in Sweden, with forest streams contributing about 80% of the total stream emission. Hence, our results provide evidence that forest streams can act as substantial N2O sources in the landscape with 800 x 10(9) g CO2-eq emitted annually in Sweden, equivalent to 25% of the total N2O emissions from the Swedish agricultural sector.

Ort, förlag, år, upplaga, sidor
WILEY , 2020. Vol. 26, nr 2, s. 629-641
Nyckelord [en]
agriculture; forest; greenhouse gas; nitrogen; nitrous oxide; river; stream
Nationell ämneskategori
Oceanografi, hydrologi och vattenresurser
Identifikatorer
URN: urn:nbn:se:liu:diva-164207DOI: 10.1111/gcb.14812ISI: 000511917700034PubMedID: 31465582OAI: oai:DiVA.org:liu-164207DiVA, id: diva2:1413455
Anmärkning

Funding Agencies|Swedish Energy AgencySwedish Energy Agency; The Swedish Research CouncilsSwedish Research Council [214-2009-872, 942-2015-1568, 2015-1559, 2012-00048]; Swedish Agency for Marine and Water Management; Carl Tryggers Stiftelse

Tillgänglig från: 2020-03-10 Skapad: 2020-03-10 Senast uppdaterad: 2020-04-01

Open Access i DiVA

fulltext(965 kB)181 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 965 kBChecksumma SHA-512
2f2a1b57a1a524f117f49c14403c0731d177e9567ebbc339247338e650f8f9ac44c4b9e260b284470dd95e789b8273ac8a0125fd3147694b9aecb4c47e0c0a56
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltextPubMed

Sök vidare i DiVA

Av författaren/redaktören
Bastviken, DavidBalathandayuthabani, Sivakiruthika
Av organisationen
Tema MiljöförändringFilosofiska fakulteten
I samma tidskrift
Global Change Biology
Oceanografi, hydrologi och vattenresurser

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 181 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
pubmed
urn-nbn

Altmetricpoäng

doi
pubmed
urn-nbn
Totalt: 236 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf