Forest canopy mitigates soil N2O emission during hot moments

Abstract Riparian forests are known as hot spots of nitrogen cycling in landscapes. Climate warming speeds up the cycle. Here we present results from a multi-annual high temporal-frequency study of soil, stem, and ecosystem (eddy covariance) fluxes of N2O from a typical riparian forest in Europe. Ho...

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Autores principales:	Ülo Mander, Alisa Krasnova, Jordi Escuer-Gatius, Mikk Espenberg, Thomas Schindler, Katerina Machacova, Jaan Pärn, Martin Maddison, J. Patrick Megonigal, Mari Pihlatie, Kuno Kasak, Ülo Niinemets, Heikki Junninen, Kaido Soosaar
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Environmental sciences GE1-350 Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/7903a4a1c61c4efa94c0b3577db9215b
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spelling	oai:doaj.org-article:7903a4a1c61c4efa94c0b3577db9215b2021-12-02T18:37:04ZForest canopy mitigates soil N2O emission during hot moments10.1038/s41612-021-00194-72397-3722https://doaj.org/article/7903a4a1c61c4efa94c0b3577db9215b2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41612-021-00194-7https://doaj.org/toc/2397-3722Abstract Riparian forests are known as hot spots of nitrogen cycling in landscapes. Climate warming speeds up the cycle. Here we present results from a multi-annual high temporal-frequency study of soil, stem, and ecosystem (eddy covariance) fluxes of N2O from a typical riparian forest in Europe. Hot moments (extreme events of N2O emission) lasted a quarter of the study period but contributed more than half of soil fluxes. We demonstrate that high soil emissions of N2O do not escape the ecosystem but are processed in the canopy. Rapid water content change across intermediate soil moisture was a major determinant of elevated soil emissions in spring. The freeze-thaw period is another hot moment. However, according to the eddy covariance measurements, the riparian forest is a modest source of N2O. We propose photochemical reactions and dissolution in canopy-space water as reduction mechanisms.Ülo ManderAlisa KrasnovaJordi Escuer-GatiusMikk EspenbergThomas SchindlerKaterina MachacovaJaan PärnMartin MaddisonJ. Patrick MegonigalMari PihlatieKuno KasakÜlo NiinemetsHeikki JunninenKaido SoosaarNature PortfolioarticleEnvironmental sciencesGE1-350Meteorology. ClimatologyQC851-999ENnpj Climate and Atmospheric Science, Vol 4, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Environmental sciences GE1-350 Meteorology. Climatology QC851-999
spellingShingle	Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Ülo Mander Alisa Krasnova Jordi Escuer-Gatius Mikk Espenberg Thomas Schindler Katerina Machacova Jaan Pärn Martin Maddison J. Patrick Megonigal Mari Pihlatie Kuno Kasak Ülo Niinemets Heikki Junninen Kaido Soosaar Forest canopy mitigates soil N2O emission during hot moments
description	Abstract Riparian forests are known as hot spots of nitrogen cycling in landscapes. Climate warming speeds up the cycle. Here we present results from a multi-annual high temporal-frequency study of soil, stem, and ecosystem (eddy covariance) fluxes of N2O from a typical riparian forest in Europe. Hot moments (extreme events of N2O emission) lasted a quarter of the study period but contributed more than half of soil fluxes. We demonstrate that high soil emissions of N2O do not escape the ecosystem but are processed in the canopy. Rapid water content change across intermediate soil moisture was a major determinant of elevated soil emissions in spring. The freeze-thaw period is another hot moment. However, according to the eddy covariance measurements, the riparian forest is a modest source of N2O. We propose photochemical reactions and dissolution in canopy-space water as reduction mechanisms.
format	article
author	Ülo Mander Alisa Krasnova Jordi Escuer-Gatius Mikk Espenberg Thomas Schindler Katerina Machacova Jaan Pärn Martin Maddison J. Patrick Megonigal Mari Pihlatie Kuno Kasak Ülo Niinemets Heikki Junninen Kaido Soosaar
author_facet	Ülo Mander Alisa Krasnova Jordi Escuer-Gatius Mikk Espenberg Thomas Schindler Katerina Machacova Jaan Pärn Martin Maddison J. Patrick Megonigal Mari Pihlatie Kuno Kasak Ülo Niinemets Heikki Junninen Kaido Soosaar
author_sort	Ülo Mander
title	Forest canopy mitigates soil N2O emission during hot moments
title_short	Forest canopy mitigates soil N2O emission during hot moments
title_full	Forest canopy mitigates soil N2O emission during hot moments
title_fullStr	Forest canopy mitigates soil N2O emission during hot moments
title_full_unstemmed	Forest canopy mitigates soil N2O emission during hot moments
title_sort	forest canopy mitigates soil n2o emission during hot moments
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7903a4a1c61c4efa94c0b3577db9215b
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Forest canopy mitigates soil N2O emission during hot moments

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