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Worldwide impacts of atmospheric vapor pressure deficit on the interannual variability of terrestrial carbon sinks

He, Bin ; Chen, Chen ; Lin, Shangrong ; Yuan, Wenping ; Chen, Hans W. LU ; Chen, Deliang ; Zhang, Yafeng ; Guo, Lanlan ; Zhao, Xiang and Liu, Xuebang , et al. (2022) In National Science Review 9(4).
Abstract

Interannual variability of the terrestrial ecosystem carbon sink is substantially regulated by various environmental variables and highly dominates the interannual variation of atmospheric carbon dioxide (CO2) concentrations. Thus, it is necessary to determine dominating factors affecting the interannual variability of the carbon sink to improve our capability of predicting future terrestrial carbon sinks. Using global datasets derived from machine-learning methods and process-based ecosystem models, this study reveals that the interannual variability of the atmospheric vapor pressure deficit (VPD) was significantly negatively correlated with net ecosystem production (NEP) and substantially impacted the interannual variability of the... (More)

Interannual variability of the terrestrial ecosystem carbon sink is substantially regulated by various environmental variables and highly dominates the interannual variation of atmospheric carbon dioxide (CO2) concentrations. Thus, it is necessary to determine dominating factors affecting the interannual variability of the carbon sink to improve our capability of predicting future terrestrial carbon sinks. Using global datasets derived from machine-learning methods and process-based ecosystem models, this study reveals that the interannual variability of the atmospheric vapor pressure deficit (VPD) was significantly negatively correlated with net ecosystem production (NEP) and substantially impacted the interannual variability of the atmospheric CO2 growth rate (CGR). Further analyses found widespread constraints of VPD interannual variability on terrestrial gross primary production (GPP), causing VPD to impact NEP and CGR. Partial correlation analysis confirms the persistent and widespread impacts of VPD on terrestrial carbon sinks compared to other environmental variables. Current Earth system models underestimate the interannual variability in VPD and its impacts on GPP and NEP. Our results highlight the importance of VPD for terrestrial carbon sinks in assessing ecosystems' responses to future climate conditions.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
carbon dioxide concentration, gross vegetation production, net ecosystem production, vapor pressure deficit
in
National Science Review
volume
9
issue
4
article number
nwab150
publisher
Oxford University Press
external identifiers
  • pmid:35386922
  • scopus:85123882745
ISSN
2095-5138
DOI
10.1093/nsr/nwab150
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021 The Author(s) 2021. Published by Oxford University Press on behalf of China Science Publishing Media Ltd.
id
aec6f5ce-39d8-4c7f-a217-db093a9479ff
date added to LUP
2022-11-17 11:24:46
date last changed
2024-05-03 09:47:10
@article{aec6f5ce-39d8-4c7f-a217-db093a9479ff,
  abstract     = {{<p>Interannual variability of the terrestrial ecosystem carbon sink is substantially regulated by various environmental variables and highly dominates the interannual variation of atmospheric carbon dioxide (CO2) concentrations. Thus, it is necessary to determine dominating factors affecting the interannual variability of the carbon sink to improve our capability of predicting future terrestrial carbon sinks. Using global datasets derived from machine-learning methods and process-based ecosystem models, this study reveals that the interannual variability of the atmospheric vapor pressure deficit (VPD) was significantly negatively correlated with net ecosystem production (NEP) and substantially impacted the interannual variability of the atmospheric CO2 growth rate (CGR). Further analyses found widespread constraints of VPD interannual variability on terrestrial gross primary production (GPP), causing VPD to impact NEP and CGR. Partial correlation analysis confirms the persistent and widespread impacts of VPD on terrestrial carbon sinks compared to other environmental variables. Current Earth system models underestimate the interannual variability in VPD and its impacts on GPP and NEP. Our results highlight the importance of VPD for terrestrial carbon sinks in assessing ecosystems' responses to future climate conditions.</p>}},
  author       = {{He, Bin and Chen, Chen and Lin, Shangrong and Yuan, Wenping and Chen, Hans W. and Chen, Deliang and Zhang, Yafeng and Guo, Lanlan and Zhao, Xiang and Liu, Xuebang and Piao, Shilong and Zhong, Ziqian and Wang, Rui and Tang, Rui}},
  issn         = {{2095-5138}},
  keywords     = {{carbon dioxide concentration; gross vegetation production; net ecosystem production; vapor pressure deficit}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{4}},
  publisher    = {{Oxford University Press}},
  series       = {{National Science Review}},
  title        = {{Worldwide impacts of atmospheric vapor pressure deficit on the interannual variability of terrestrial carbon sinks}},
  url          = {{http://dx.doi.org/10.1093/nsr/nwab150}},
  doi          = {{10.1093/nsr/nwab150}},
  volume       = {{9}},
  year         = {{2022}},
}