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Impact of drainage and soil properties on carbon dioxide emissions from intact cores of cultivated peat soils

Norberg, Lisbet and Berglund, Örjan and Berglund, Kerstin (2018). Impact of drainage and soil properties on carbon dioxide emissions from intact cores of cultivated peat soils. Mires and Peat. 21 , 1-14
[Journal article]

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Abstract

Drained peatlands contribute to anthropic emissions of carbon dioxide (CO2), so a better understanding of the underlying processes and identification of mitigation options for agricultural peatlands are urgently required. Peatland soil properties vary greatly and, in combination with drainage, can affect emissions of CO2 both directly and indirectly. Drainage reduces soil water content but increases CO2 production, so it is important to find the optimum drainage level that minimises CO2 emissions without affecting agricultural use. Intact soil cores from nine different sites (topsoil, plus subsoil at four sites) were collected and brought into a controlled laboratory environment. Repeated measurements of CO2 fluxes were performed at increasing soil water suctions corresponding to different drainage levels. Physical and chemical properties of the soils were determined and compared with the CO2 emissions. The soil cores displayed different CO2 emission patterns with increasing soil water suction head. In some cores, emissions increased rapidly to a high level, while in others they remained at lower levels. At a soil water suction head of only 0.5 m of water, the average soil CO2 emissions had already reached a maximum. The soil cores represented peat soils with a wide range of soil properties, e.g. bulk density from 0.17 to 0.47 g cm(-3) and total carbon from 26.3 to 43.5 %, but none of the properties measured was clearly correlated with CO2 emissions.

Authors/Creators:Norberg, Lisbet and Berglund, Örjan and Berglund, Kerstin
Title:Impact of drainage and soil properties on carbon dioxide emissions from intact cores of cultivated peat soils
Year of publishing :2018
Volume:21
Page range:1-14
Number of Pages:14
Publisher:International Mire Conservation Group and International Peatland Society,
ISSN:1819-754X
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:CO2, laboratory suction apparatus, peaty marl, subsoil, suction head, topsoil
URN:NBN:urn:nbn:se:slu:epsilon-p-95350
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-95350
Additional ID:
Type of IDID
DOI10.19189/MaP.2017.OMB.284
Web of Science (WoS)000435812000003
ID Code:16219
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:11 Jul 2019 07:05
Metadata Last Modified:11 Jul 2019 07:05

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