Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio
Managed northern peatlands are an important source of the strong greenhouse gas nitrous oxide (N2O). However, N2O emissions from these managed peatlands display a high spatial variability, and processes governing N2O production and emissions from these ecosystems are still not well understood. To co...
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Online Access: | https://hdl.handle.net/20.500.11815/1267 https://doi.org/10.1016/j.soilbio.2018.04.006 |
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ftopinvisindi:oai:opinvisindi.is:20.500.11815/1267 2023-05-15T16:52:07+02:00 Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio Liimatainen, Maarit Voigt, Carolina Martikainen, Pertti Hytönen, Jyrki Regina, Kristiina Oskarsson, Hlynur Maljanen, Marja Auðlinda- og umhverfisdeild (LBHÍ) Faculty of Natural Resources and Environmental Sciences (AUI) Landbúnaðarháskóli Íslands Agricultural University of Iceland 2018-07 186-195 https://hdl.handle.net/20.500.11815/1267 https://doi.org/10.1016/j.soilbio.2018.04.006 en eng Elsevier BV Soil Biology and Biochemistry;122 https://www.sciencedirect.com/science/article/pii/S0038071718301251 Liimatainen, M., Voigt, C., Martikainen, P. J., Hytönen, J., Regina, K., Óskarsson, H., & Maljanen, M. (2018). Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio. Soil Biology and Biochemistry, 122, 186-195. 0038-0717 https://hdl.handle.net/20.500.11815/1267 Soil Biology and Biochemistry doi:10.1016/j.soilbio.2018.04.006 info:eu-repo/semantics/openAccess Microbiology Soil Science Jarðvegsrannsóknir Kolefni Mýrlendi info:eu-repo/semantics/article 2018 ftopinvisindi https://doi.org/20.500.11815/1267 https://doi.org/10.1016/j.soilbio.2018.04.006 2022-11-18T06:51:46Z Managed northern peatlands are an important source of the strong greenhouse gas nitrous oxide (N2O). However, N2O emissions from these managed peatlands display a high spatial variability, and processes governing N2O production and emissions from these ecosystems are still not well understood. To constrain the factors regulating N2O emissions from managed northern peat soils, we determined a wide set of soil physical and chemical properties of peatlands with different management histories spread across Finland, Sweden and Iceland. We included eleven peatland sites with available in situ N2O flux data, and complemented our analyses with detailed measurements of soil nitrogen (N) cycling processes such as N2O production, gross N mineralization and gross nitrification and, in addition, soil microbial biomass. This study included drained peatlands with different land-use types and management intensities, comprising forested, cultivated or only drained peatlands and afforested or abandoned agricultural peatlands. All selected peatland sites displayed a low soil carbon to nitrogen (C/N) ratio of 15–27, traditionally used to predict high N2O emissions. Despite the narrow C/N range, the N2O emissions at our sites varied greatly within and between land-use groups, ranging from 0.03 to 2.38 g N m−2 y−1. Thus, our findings provide valuable insights into the regulatory factors underlying the variability in N2O emissions and show that a low C/N ratio in managed peatlands cannot be used to predict high N2O emissions. Instead, our results demonstrate that higher N2O emissions are linked to higher peat phosphorus (P) and copper (Cu) content, suggesting that low P and Cu concentrations can limit N2O production in peat even with sufficient N availability. While known factors such as soil moisture, oxygen content and the degree of peat humification partially explained the variability in N2O emissions, this study directly links soil P and Cu availability to N2O production processes. The availability of P and especially Cu seemed to ... Article in Journal/Newspaper Iceland Opin vísindi (Iceland) Soil Biology and Biochemistry 122 186 195 |
institution |
Open Polar |
collection |
Opin vísindi (Iceland) |
op_collection_id |
ftopinvisindi |
language |
English |
topic |
Microbiology Soil Science Jarðvegsrannsóknir Kolefni Mýrlendi |
spellingShingle |
Microbiology Soil Science Jarðvegsrannsóknir Kolefni Mýrlendi Liimatainen, Maarit Voigt, Carolina Martikainen, Pertti Hytönen, Jyrki Regina, Kristiina Oskarsson, Hlynur Maljanen, Marja Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio |
topic_facet |
Microbiology Soil Science Jarðvegsrannsóknir Kolefni Mýrlendi |
description |
Managed northern peatlands are an important source of the strong greenhouse gas nitrous oxide (N2O). However, N2O emissions from these managed peatlands display a high spatial variability, and processes governing N2O production and emissions from these ecosystems are still not well understood. To constrain the factors regulating N2O emissions from managed northern peat soils, we determined a wide set of soil physical and chemical properties of peatlands with different management histories spread across Finland, Sweden and Iceland. We included eleven peatland sites with available in situ N2O flux data, and complemented our analyses with detailed measurements of soil nitrogen (N) cycling processes such as N2O production, gross N mineralization and gross nitrification and, in addition, soil microbial biomass. This study included drained peatlands with different land-use types and management intensities, comprising forested, cultivated or only drained peatlands and afforested or abandoned agricultural peatlands. All selected peatland sites displayed a low soil carbon to nitrogen (C/N) ratio of 15–27, traditionally used to predict high N2O emissions. Despite the narrow C/N range, the N2O emissions at our sites varied greatly within and between land-use groups, ranging from 0.03 to 2.38 g N m−2 y−1. Thus, our findings provide valuable insights into the regulatory factors underlying the variability in N2O emissions and show that a low C/N ratio in managed peatlands cannot be used to predict high N2O emissions. Instead, our results demonstrate that higher N2O emissions are linked to higher peat phosphorus (P) and copper (Cu) content, suggesting that low P and Cu concentrations can limit N2O production in peat even with sufficient N availability. While known factors such as soil moisture, oxygen content and the degree of peat humification partially explained the variability in N2O emissions, this study directly links soil P and Cu availability to N2O production processes. The availability of P and especially Cu seemed to ... |
author2 |
Auðlinda- og umhverfisdeild (LBHÍ) Faculty of Natural Resources and Environmental Sciences (AUI) Landbúnaðarháskóli Íslands Agricultural University of Iceland |
format |
Article in Journal/Newspaper |
author |
Liimatainen, Maarit Voigt, Carolina Martikainen, Pertti Hytönen, Jyrki Regina, Kristiina Oskarsson, Hlynur Maljanen, Marja |
author_facet |
Liimatainen, Maarit Voigt, Carolina Martikainen, Pertti Hytönen, Jyrki Regina, Kristiina Oskarsson, Hlynur Maljanen, Marja |
author_sort |
Liimatainen, Maarit |
title |
Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio |
title_short |
Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio |
title_full |
Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio |
title_fullStr |
Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio |
title_full_unstemmed |
Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio |
title_sort |
factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio |
publisher |
Elsevier BV |
publishDate |
2018 |
url |
https://hdl.handle.net/20.500.11815/1267 https://doi.org/10.1016/j.soilbio.2018.04.006 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Soil Biology and Biochemistry;122 https://www.sciencedirect.com/science/article/pii/S0038071718301251 Liimatainen, M., Voigt, C., Martikainen, P. J., Hytönen, J., Regina, K., Óskarsson, H., & Maljanen, M. (2018). Factors controlling nitrous oxide emissions from managed northern peat soils with low carbon to nitrogen ratio. Soil Biology and Biochemistry, 122, 186-195. 0038-0717 https://hdl.handle.net/20.500.11815/1267 Soil Biology and Biochemistry doi:10.1016/j.soilbio.2018.04.006 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11815/1267 https://doi.org/10.1016/j.soilbio.2018.04.006 |
container_title |
Soil Biology and Biochemistry |
container_volume |
122 |
container_start_page |
186 |
op_container_end_page |
195 |
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1766042252113608704 |