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Nitrous oxide excha...
Nitrous oxide exchanges with the atmosphere of a constructed wetland treating wastewater - Parameters and implications for emission factors
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- Johansson, Elisabeth (author)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Klemedtsson, Åsa Kasimir, 1956 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences,Department of Informatics/Math., Trollhattan/Uddevalla Univ. College, Sweden
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- Klemedtsson, Leif, 1953 (author)
- Gothenburg University,Göteborgs universitet,Botaniska institutionen,Botanical Institute,Botanical Institute, Göteborg University, Göteborg, Sweden
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- Svensson, Bo (author)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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(creator_code:org_t)
- Stockholm University Press, 2003
- 2003
- English.
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In: Tellus Series B-Chemical and Physical Meteorology. - : Stockholm University Press. - 0280-6509 .- 1600-0889. ; 55:3, s. 737-750
- Related links:
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https://gup.ub.gu.se...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Static chamber measurements of N2O fluxes were taken during the 1998 and 1999 growth seasons in a Swedish constructed wetland receiving wastewater. The dominating plant species in different parts of the wetland were Lemna minor L., Typha latifolia L., Spirogyra sp. and Glyceria maxima (Hartm.) and Phalaris arundinacea (L.), respectively. There were large temporal and spatial variations in N2O fluxes, which ranged from consumption at -350 to emissions at 1791 mug N2O m(-2) h(-1). The largest positive flux occurred in October 1999 and the lowest in the middle of July 1999. The average N2O flux for the two years was 130 mug N2O m(-2) h(-1) (SD = 220). No significant differences in N2O fluxes were found between the years, even though the two growing seasons differed considerably with respect to both air temperature and precipitation. 15% of the fluxes were negative, showing a consumption of N2O. Consumption occurred on a few occasions at most measurement sites and ranged from 1-350 mug N2O m(-2) h(-1). 13-43% of the variation in N2O fluxes was explained by multiple linear regression analysis including principal components. Emission factors were calculated according to IPCC methods from the N2O fluxes in the constructed wetland. The calculated emission factors were always lower (0.02-0.27%) compared to the default factor provided by the IPCC (0.75%). Thus, direct application of the IPCC default factor may lead to overestimation of N2O fluxes from constructed wastewater-treating wetlands.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Keyword
- METHANE EMISSIONS
- NORTHEAST GERMANY
- TREATMENT-PLANT
- N2O
- MACROPHYTES
- DEPOSITION
- SOILS
- MIRE
- SOCIAL SCIENCES
Publication and Content Type
- ref (subject category)
- art (subject category)
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