Drought response of the boreal forest carbon sink is driven by understorey-tree composition
The boreal forest is an important global carbon sink, but its response to drought remains uncertain. Here, we compiled biometric- and chamber-based flux data from 50 boreal forest stands to assess the impact of the 2018 European summer drought on net ecosystem production (NEP) across a 68 km2 manage...
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ftslunivuppsala:oai:pub.epsilon.slu.se:33508 2024-06-02T08:12:09+00:00 Drought response of the boreal forest carbon sink is driven by understorey-tree composition Martinez Garcia, Eduardo Nilsson, Mats Laudon, Hjalmar Lundmark, Tomas Fransson, Johan Wallerman, Jörgen Peichl, Matthias 2024 application/pdf https://pub.epsilon.slu.se/33508/ https://pub.epsilon.slu.se/33508/1/martinez-garcia-e-et-al-20240503.pdf sv eng swe eng https://pub.epsilon.slu.se/33508/1/martinez-garcia-e-et-al-20240503.pdf Martinez Garcia, Eduardo and Nilsson, Mats and Laudon, Hjalmar and Lundmark, Tomas and Fransson, Johan and Wallerman, Jörgen and Peichl, Matthias (2024). Drought response of the boreal forest carbon sink is driven by understorey-tree composition. Nature Geoscience. 17 :3 , 197–204 [Research article] Forest Science Geosciences Multidisciplinary Research article NonPeerReviewed 2024 ftslunivuppsala 2024-05-07T23:41:28Z The boreal forest is an important global carbon sink, but its response to drought remains uncertain. Here, we compiled biometric- and chamber-based flux data from 50 boreal forest stands to assess the impact of the 2018 European summer drought on net ecosystem production (NEP) across a 68 km2 managed landscape in northern Sweden. Our results reveal a non-uniform reduction in NEP (on average by 80 +/- 16 g C m-2 yr-1 or 57 +/- 13%) across the landscape, which was greatest in young stands of 20-50 years (95 +/- 39 g C m-2 yr-1), but gradually decreased towards older stands (54 +/- 57 g C m-2 yr-1). This pattern was attributed to the higher sensitivity of forest-floor understorey to drought and its decreasing contribution to production relative to trees during stand development. This suggests that an age-dependent shift in understorey-tree composition with increasing stand age drives the drought response of the boreal forest NEP. Thus, our study advocates the need for partitioning ecosystem responses to improve empirical and modelling assessments of carbon cycle-climate feedbacks in boreal forests. It further implies that the forest age structure may strongly determine the carbon sink response to the projected increase in drought events across the managed boreal landscape.Carbon sink in young boreal forests is more vulnerable to drought than in mature forests due to the greater contribution and drought sensitivity of understorey relative to trees, according to carbon flux assessments of managed boreal forests in northern Sweden during the 2018 European summer drought. Article in Journal/Newspaper Northern Sweden Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
institution |
Open Polar |
collection |
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
op_collection_id |
ftslunivuppsala |
language |
Swedish English |
topic |
Forest Science Geosciences Multidisciplinary |
spellingShingle |
Forest Science Geosciences Multidisciplinary Martinez Garcia, Eduardo Nilsson, Mats Laudon, Hjalmar Lundmark, Tomas Fransson, Johan Wallerman, Jörgen Peichl, Matthias Drought response of the boreal forest carbon sink is driven by understorey-tree composition |
topic_facet |
Forest Science Geosciences Multidisciplinary |
description |
The boreal forest is an important global carbon sink, but its response to drought remains uncertain. Here, we compiled biometric- and chamber-based flux data from 50 boreal forest stands to assess the impact of the 2018 European summer drought on net ecosystem production (NEP) across a 68 km2 managed landscape in northern Sweden. Our results reveal a non-uniform reduction in NEP (on average by 80 +/- 16 g C m-2 yr-1 or 57 +/- 13%) across the landscape, which was greatest in young stands of 20-50 years (95 +/- 39 g C m-2 yr-1), but gradually decreased towards older stands (54 +/- 57 g C m-2 yr-1). This pattern was attributed to the higher sensitivity of forest-floor understorey to drought and its decreasing contribution to production relative to trees during stand development. This suggests that an age-dependent shift in understorey-tree composition with increasing stand age drives the drought response of the boreal forest NEP. Thus, our study advocates the need for partitioning ecosystem responses to improve empirical and modelling assessments of carbon cycle-climate feedbacks in boreal forests. It further implies that the forest age structure may strongly determine the carbon sink response to the projected increase in drought events across the managed boreal landscape.Carbon sink in young boreal forests is more vulnerable to drought than in mature forests due to the greater contribution and drought sensitivity of understorey relative to trees, according to carbon flux assessments of managed boreal forests in northern Sweden during the 2018 European summer drought. |
format |
Article in Journal/Newspaper |
author |
Martinez Garcia, Eduardo Nilsson, Mats Laudon, Hjalmar Lundmark, Tomas Fransson, Johan Wallerman, Jörgen Peichl, Matthias |
author_facet |
Martinez Garcia, Eduardo Nilsson, Mats Laudon, Hjalmar Lundmark, Tomas Fransson, Johan Wallerman, Jörgen Peichl, Matthias |
author_sort |
Martinez Garcia, Eduardo |
title |
Drought response of the boreal forest carbon sink is driven by understorey-tree composition |
title_short |
Drought response of the boreal forest carbon sink is driven by understorey-tree composition |
title_full |
Drought response of the boreal forest carbon sink is driven by understorey-tree composition |
title_fullStr |
Drought response of the boreal forest carbon sink is driven by understorey-tree composition |
title_full_unstemmed |
Drought response of the boreal forest carbon sink is driven by understorey-tree composition |
title_sort |
drought response of the boreal forest carbon sink is driven by understorey-tree composition |
publishDate |
2024 |
url |
https://pub.epsilon.slu.se/33508/ https://pub.epsilon.slu.se/33508/1/martinez-garcia-e-et-al-20240503.pdf |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
https://pub.epsilon.slu.se/33508/1/martinez-garcia-e-et-al-20240503.pdf Martinez Garcia, Eduardo and Nilsson, Mats and Laudon, Hjalmar and Lundmark, Tomas and Fransson, Johan and Wallerman, Jörgen and Peichl, Matthias (2024). Drought response of the boreal forest carbon sink is driven by understorey-tree composition. Nature Geoscience. 17 :3 , 197–204 [Research article] |
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1800758506526081024 |