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Greenhouse gas emissions from cultivated peat soils in Sweden

Berglund, Örjan (2011). Greenhouse gas emissions from cultivated peat soils in Sweden. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2011:2
ISBN 978-91-576-7571-2
[Doctoral thesis]

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Abstract

Greenhouse gas emissions and peat subsidence are major concerns both from an environmental perspective and for farmers with declining soil production capacity. Agricultural databases, digitised maps of quaternary deposits and 40K radiation have been used in a GIS analysis to estimate the distribution and land use of agricultural organic soils in Sweden. The total area of agricultural land in Sweden is estimated to be 3,525,259 ha and 7.6% (267,990 ha) of this area is classified as agricultural organic soil. One-quarter of the agricultural area of peat soils is intensively cultivated with annual crops and the remainder is sparsely used, predominantly for managed grasslands and pastures. These data on the acreage and cultivation intensity of agricultural peat soils were used to calculate annual greenhouse gas emissions, which were estimated to be between 3.1 and 4.6 M ton CO₂ eq. (6-8% of total national emissions). Lysimeters with undisturbed soil columns (50 cm high, 29.5 cm in diameter) from two sites sown with ryegrass (Lolium perenne) were used to investigate the effects of water table depth and soil properties on soil organic matter decomposition and greenhouse gas emissions. The water table depth was set to either 40 cm or 80 cm. Dark static chambers were used to measure gas emissions from the soil surface. CO₂ emissions were greater with the water table at 40 cm than at 80 cm, and the plant contribution to CO₂ flux was 47-57%. N₂O emissions peaked in springtime and CH₄ emissions were very low or negative. The differences observed in GHG emissions between the soils were attributed to differences in organic matter resilience and soil physical properties.

Authors/Creators:Berglund, Örjan
Title:Greenhouse gas emissions from cultivated peat soils in Sweden
Year of publishing :2011
Volume:2011:2
Number of Pages:72
Papers/manuscripts:
NumberReferences
ALLI. Berglund, Ö. and Berglund K. (2010). Distribution and cultivation intensity of agricultural peat and gyttja soils in Sweden and estimation of greenhouse gas emissions from cultivated peat soils. Geoderma 154(3-4), 173-180. II. Berglund, Ö., Berglund, K. and Klemedtsson, L. (2010). A lysimeter study on the effect of temperature on CO₂ emission from cultivated peat soils. Geoderma 154(3-4), 211-218. III. Berglund, Ö., Berglund, K. and Klemedtsson, L. Plant-derived CO₂ flux from cultivated peat soils. Acta Agriculturae Scandinavica Section B – Soil and Plant Science (Accepted). IV. Berglund, Ö. and Berglund, K. (2011). Influence of water table level and soil properties on emissions of greenhouse gases from cultivated peat soil. Soil Biology & Biochemistry, doi:10.1016/j.soilbio.2011.01.00.
Place of Publication:Uppsala
Publisher:Institutionen för mark och miljö, Sveriges lantbruksuniversitet
ISBN for printed version:978-91-576-7571-2
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:P Natural resources > P30 Soil science and management
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Agrovoc terms:peat soils, organic soils, greenhouse gases, air pollution, geographical information systems, soil classification, lysimeters, roots, respiration, sweden
Keywords:Peat soil, organic soil, greenhouse gas emission, GIS, water table, lysimeter, root respiration, priming effect
URN:NBN:urn:nbn:se:slu:epsilon-3157
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-3157
ID Code:2445
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: Örjan Berglund
Deposited On:01 Mar 2011 00:00
Metadata Last Modified:02 Dec 2014 10:18

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