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Emissions of biogenic volatile organic compounds in a Salix biofuel plantation : field study in Grästorp (Sweden)

Broberg, Malin LU (2013) In Student thesis series INES NGEK01 20131
Dept of Physical Geography and Ecosystem Science
Abstract
Biogenic volatile organic compounds (BVOCs) play an important role in the climate system by altering the oxidative capacity of the atmosphere, affecting the lifetime of methane and production of tropospheric ozone, and by contributing to formation of aerosols and clouds. Salix plants (willows) are well-documented emitters of BVOCs and this study aims to examine emissions in a Salix biofuel plantation for a better understanding of its total climate impact. Measurements of BVOC soil emissions from sewage sludge treated Salix were compared with control plots and additional branch level measurement were carried out. The average emission rate for soil emissions was estimated to 168 μg C m-2 h-1 for treatment plots and 111 μg C m-2 h-1 for... (More)
Biogenic volatile organic compounds (BVOCs) play an important role in the climate system by altering the oxidative capacity of the atmosphere, affecting the lifetime of methane and production of tropospheric ozone, and by contributing to formation of aerosols and clouds. Salix plants (willows) are well-documented emitters of BVOCs and this study aims to examine emissions in a Salix biofuel plantation for a better understanding of its total climate impact. Measurements of BVOC soil emissions from sewage sludge treated Salix were compared with control plots and additional branch level measurement were carried out. The average emission rate for soil emissions was estimated to 168 μg C m-2 h-1 for treatment plots and 111 μg C m-2 h-1 for control plots, with emissions dominated by the compound classes alkanes, alcohols, carbonyls and aromatics. Branch emissions contained compounds similar to soil emissions.
Measurements of BVOC soil emissions were additionally performed in a harvested area of the Salix plantation, with a comparison of emissions from stumps and from the bare soil (control). Average emission rates were slightly higher for control plots than the stumps, with emissions of 175 μg C m-2 h-1 for the control plots and 163 μg C m-2 h-1 for the stumps. This study gives a first insight to what types BVOC soil emission that occurs in Salix plantations. However, it remains unclear how the emissions change over the season and how those compounds might affect the atmospheric composition. (Less)
Please use this url to cite or link to this publication:
author
Broberg, Malin LU
supervisor
organization
course
NGEK01 20131
year
type
M2 - Bachelor Degree
subject
keywords
Salix, biogenic volatile organic compounds, BVOC, willow, atmosphere, soil, physical geography
publication/series
Student thesis series INES
report number
276
language
English
id
3857867
date added to LUP
2013-08-26 11:28:14
date last changed
2013-09-03 11:32:12
@misc{3857867,
  abstract     = {Biogenic volatile organic compounds (BVOCs) play an important role in the climate system by altering the oxidative capacity of the atmosphere, affecting the lifetime of methane and production of tropospheric ozone, and by contributing to formation of aerosols and clouds. Salix plants (willows) are well-documented emitters of BVOCs and this study aims to examine emissions in a Salix biofuel plantation for a better understanding of its total climate impact. Measurements of BVOC soil emissions from sewage sludge treated Salix were compared with control plots and additional branch level measurement were carried out. The average emission rate for soil emissions was estimated to 168 μg C m-2 h-1 for treatment plots and 111 μg C m-2 h-1 for control plots, with emissions dominated by the compound classes alkanes, alcohols, carbonyls and aromatics. Branch emissions contained compounds similar to soil emissions.
Measurements of BVOC soil emissions were additionally performed in a harvested area of the Salix plantation, with a comparison of emissions from stumps and from the bare soil (control). Average emission rates were slightly higher for control plots than the stumps, with emissions of 175 μg C m-2 h-1 for the control plots and 163 μg C m-2 h-1 for the stumps. This study gives a first insight to what types BVOC soil emission that occurs in Salix plantations. However, it remains unclear how the emissions change over the season and how those compounds might affect the atmospheric composition.},
  author       = {Broberg, Malin},
  keyword      = {Salix,biogenic volatile organic compounds,BVOC,willow,atmosphere,soil,physical geography},
  language     = {eng},
  note         = {Student Paper},
  series       = {Student thesis series INES},
  title        = {Emissions of biogenic volatile organic compounds in a Salix biofuel plantation : field study in Grästorp (Sweden)},
  year         = {2013},
}