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Consistent time allocation fraction to vegetation green-up versus senescence across northern ecosystems despite recent climate change

Meng, Fandong ; Felton, Andrew J. ; Mao, Jiafu ; Cong, Nan ; Smith, William K. ; Körner, Christian ; Hu, Zhongmin ; Hong, Songbai ; Knott, Jonathan and Yan, Yanzi LU , et al. (2024) In Science Advances 10(23).
Abstract

Extended growing season lengths under climatic warming suggest increased time for plant growth. However, research has focused on climatic impacts to the timing or duration of distinct phenological events. Comparatively little is known about impacts to the relative time allocation to distinct phenological events, for example, the proportion of time dedicated to leaf growth versus senescence. We use multiple satellite and ground-based observations to show that, despite recent climate change during 2001 to 2020, the ratio of time allocated to vegetation green-up over senescence has remained stable [1.27 (± 0.92)] across more than 83% of northern ecosystems. This stability is independent of changes in growing season lengths and is caused by... (More)

Extended growing season lengths under climatic warming suggest increased time for plant growth. However, research has focused on climatic impacts to the timing or duration of distinct phenological events. Comparatively little is known about impacts to the relative time allocation to distinct phenological events, for example, the proportion of time dedicated to leaf growth versus senescence. We use multiple satellite and ground-based observations to show that, despite recent climate change during 2001 to 2020, the ratio of time allocated to vegetation green-up over senescence has remained stable [1.27 (± 0.92)] across more than 83% of northern ecosystems. This stability is independent of changes in growing season lengths and is caused by widespread positive relationships among vegetation phenological events; longer vegetation green-up results in longer vegetation senescence. These empirical observations were also partly reproduced by 13 dynamic global vegetation models. Our work demonstrates an intrinsic biotic control to vegetation phenology that could explain the timing of vegetation senescence under climate change.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Science Advances
volume
10
issue
23
article number
eadn2487
publisher
American Association for the Advancement of Science (AAAS)
external identifiers
  • pmid:38848369
  • scopus:85195534165
ISSN
2375-2548
DOI
10.1126/sciadv.adn2487
language
English
LU publication?
yes
id
bc3c53e0-0c7f-4344-8dd1-d09e8d56cd6d
date added to LUP
2024-08-14 14:58:10
date last changed
2024-08-14 14:58:29
@article{bc3c53e0-0c7f-4344-8dd1-d09e8d56cd6d,
  abstract     = {{<p>Extended growing season lengths under climatic warming suggest increased time for plant growth. However, research has focused on climatic impacts to the timing or duration of distinct phenological events. Comparatively little is known about impacts to the relative time allocation to distinct phenological events, for example, the proportion of time dedicated to leaf growth versus senescence. We use multiple satellite and ground-based observations to show that, despite recent climate change during 2001 to 2020, the ratio of time allocated to vegetation green-up over senescence has remained stable [1.27 (± 0.92)] across more than 83% of northern ecosystems. This stability is independent of changes in growing season lengths and is caused by widespread positive relationships among vegetation phenological events; longer vegetation green-up results in longer vegetation senescence. These empirical observations were also partly reproduced by 13 dynamic global vegetation models. Our work demonstrates an intrinsic biotic control to vegetation phenology that could explain the timing of vegetation senescence under climate change.</p>}},
  author       = {{Meng, Fandong and Felton, Andrew J. and Mao, Jiafu and Cong, Nan and Smith, William K. and Körner, Christian and Hu, Zhongmin and Hong, Songbai and Knott, Jonathan and Yan, Yanzi and Guo, Bixi and Deng, Ying and Leisz, Stephen and Dorji, Tsechoe and Wang, Shiping and Chen, Anping}},
  issn         = {{2375-2548}},
  language     = {{eng}},
  number       = {{23}},
  publisher    = {{American Association for the Advancement of Science (AAAS)}},
  series       = {{Science Advances}},
  title        = {{Consistent time allocation fraction to vegetation green-up versus senescence across northern ecosystems despite recent climate change}},
  url          = {{http://dx.doi.org/10.1126/sciadv.adn2487}},
  doi          = {{10.1126/sciadv.adn2487}},
  volume       = {{10}},
  year         = {{2024}},
}