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Increasing terrestrial ecosystem carbon release in response to autumn cooling and warming

Tang, Rui ; He, Bin ; Chen, Hans W. LU ; Chen, Deliang ; Chen, Yaning ; Fu, Yongshuo H. ; Yuan, Wenping ; Li, Baofu ; Li, Zhi and Guo, Lanlan , et al. (2022) In Nature Climate Change 12(4). p.380-385
Abstract

Part of the Northern Hemisphere has experienced widespread autumn cooling during the most recent decades despite overall warming, but how this contrasting temperature change has influenced the ecosystem carbon exchange remains unclear. Here, we show that autumn cooling has occurred over about half of the area north of 25° N since 2004, producing a weak cooling trend over the period 2004–2018. Multiple lines of evidence suggest an increasing net CO2 release in autumn during 2004–2018. In cooling areas, the increasing autumn CO2 release is due to the larger decrease of gross primary productivity (GPP) growth than total ecosystem respiration (TER) growth suppressed by cooling. In the warming areas, TER increased more... (More)

Part of the Northern Hemisphere has experienced widespread autumn cooling during the most recent decades despite overall warming, but how this contrasting temperature change has influenced the ecosystem carbon exchange remains unclear. Here, we show that autumn cooling has occurred over about half of the area north of 25° N since 2004, producing a weak cooling trend over the period 2004–2018. Multiple lines of evidence suggest an increasing net CO2 release in autumn during 2004–2018. In cooling areas, the increasing autumn CO2 release is due to the larger decrease of gross primary productivity (GPP) growth than total ecosystem respiration (TER) growth suppressed by cooling. In the warming areas, TER increased more than GPP because the warming and wetting conditions are more favourable for TER growth than GPP increase. Despite the opposite temperature trends, there has been a systematic increase in ecosystem carbon release across the Northern Hemisphere middle and high latitudes.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
carbon dioxide, ecosystem, climate change, carbon cycle
in
Nature Climate Change
volume
12
issue
4
pages
6 pages
publisher
Nature Publishing Group
external identifiers
  • scopus:85125694904
ISSN
1758-678X
DOI
10.1038/s41558-022-01304-w
language
English
LU publication?
yes
additional info
Funding Information: This work has been supported by the National Key Scientific Research and Development Program of China (grant 2017YFA0603601) and the Strategic Priority Research Program of the Chinese Academy of Sciences (grant XDA20060402). Support from the Swedish BECC and MERGE, as well as STINT (CH2020-8799 and CH2020-8767) are also acknowledged. Publisher Copyright: © 2022, The Author(s).
id
5c6ed35d-60d3-429d-835d-6ec05ddd7fa2
date added to LUP
2022-11-17 11:12:17
date last changed
2023-02-20 04:20:09
@article{5c6ed35d-60d3-429d-835d-6ec05ddd7fa2,
  abstract     = {{<p>Part of the Northern Hemisphere has experienced widespread autumn cooling during the most recent decades despite overall warming, but how this contrasting temperature change has influenced the ecosystem carbon exchange remains unclear. Here, we show that autumn cooling has occurred over about half of the area north of 25° N since 2004, producing a weak cooling trend over the period 2004–2018. Multiple lines of evidence suggest an increasing net CO<sub>2</sub> release in autumn during 2004–2018. In cooling areas, the increasing autumn CO<sub>2</sub> release is due to the larger decrease of gross primary productivity (GPP) growth than total ecosystem respiration (TER) growth suppressed by cooling. In the warming areas, TER increased more than GPP because the warming and wetting conditions are more favourable for TER growth than GPP increase. Despite the opposite temperature trends, there has been a systematic increase in ecosystem carbon release across the Northern Hemisphere middle and high latitudes.</p>}},
  author       = {{Tang, Rui and He, Bin and Chen, Hans W. and Chen, Deliang and Chen, Yaning and Fu, Yongshuo H. and Yuan, Wenping and Li, Baofu and Li, Zhi and Guo, Lanlan and Hao, Xingming and Sun, Liying and Liu, Huiming and Sun, Cheng and Yang, Yang}},
  issn         = {{1758-678X}},
  keywords     = {{carbon dioxide; ecosystem; climate change; carbon cycle}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{380--385}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Nature Climate Change}},
  title        = {{Increasing terrestrial ecosystem carbon release in response to autumn cooling and warming}},
  url          = {{http://dx.doi.org/10.1038/s41558-022-01304-w}},
  doi          = {{10.1038/s41558-022-01304-w}},
  volume       = {{12}},
  year         = {{2022}},
}