Nitrous oxide emissions from a municipal landfill

被引:86
|
作者
Rinne, J
Pihlatie, M
Lohila, A
Thum, T
Aurela, M
Tuovinen, JP
Laurila, T
Vesala, T
机构
[1] Univ Helsinki, Dept Phys Sci, FI-00014 Helsinki, Finland
[2] Finnish Meteorol Inst, Climate & Global Change Res, FI-00101 Helsinki, Finland
关键词
D O I
10.1021/es048416q
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The first measurements of nitrous oxide (N2O) emissions from a landfill by the eddy covariance method are reported. These measurements were compared to enclosure emission measurements conducted at the same site. The average emissions from the municipal landfill of the Helsinki Metropolitan Area were 2.7 mg N m(-2) h(-1) and 6.0 mg N m(-2) h(-1) measured by the eddy covariance and the enclosure methods, respectively. The N2O emissions from the landfill are about I order of magnitude higher than the highest emissions reported from Northern European agricultural soils, and 2 orders of magnitude higher than the highest emissions reported from boreal forest soils. Due to the small area of landfills as compared to other land-use classes, the total N2O emissions from landfills are estimated to be of minor importance for the total emissions from Finland. Expressed as a greenhouse warming potential (GWP(100)), the N2O emissions make up about 3% of the total GWP(100) emission of the landfill. The emissions measured by the two systems were generally of similar magnitude, with enclosure measurements showing a high small-scale spatial variation.
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收藏
页码:7790 / 7793
页数:4
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