Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro
As temperatures decrease in autumn, vegetation of temperate and boreal ecosystems increases its tolerance to freezing. This process, known as hardening, results in a set of physiological changes at the molecular level that initiate modifications of cell membrane composition and the synthesis of anti...
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ftdoajarticles:oai:doaj.org/article:0e1396c676b4445caaf0014c05de5e20 2023-05-15T15:09:19+02:00 Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro M. S. A. Lambert H. Tang K. S. Aas F. Stordal R. A. Fisher Y. Fang J. Ding F.-J. W. Parmentier 2022-12-01T00:00:00Z https://doi.org/10.5194/gmd-15-8809-2022 https://doaj.org/article/0e1396c676b4445caaf0014c05de5e20 EN eng Copernicus Publications https://gmd.copernicus.org/articles/15/8809/2022/gmd-15-8809-2022.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-15-8809-2022 1991-959X 1991-9603 https://doaj.org/article/0e1396c676b4445caaf0014c05de5e20 Geoscientific Model Development, Vol 15, Pp 8809-8829 (2022) Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.5194/gmd-15-8809-2022 2022-12-30T22:32:01Z As temperatures decrease in autumn, vegetation of temperate and boreal ecosystems increases its tolerance to freezing. This process, known as hardening, results in a set of physiological changes at the molecular level that initiate modifications of cell membrane composition and the synthesis of anti-freeze proteins. Together with the freezing of extracellular water, anti-freeze proteins reduce plant water potentials and xylem conductivity. To represent the responses of vegetation to climate change, land surface schemes increasingly employ “hydrodynamic” models that represent the explicit fluxes of water from soil and through plants. The functioning of such schemes under frozen soil conditions, however, is poorly understood. Nonetheless, hydraulic processes are of major importance in the dynamics of these systems, which can suffer from, e.g., winter “frost drought” events. In this study, we implement a scheme that represents hardening into CLM5.0-FATES-Hydro. FATES-Hydro is a plant hydrodynamics module in FATES, a cohort model of vegetation physiology, growth, and dynamics hosted in CLM5.0. We find that, in frozen systems, it is necessary to introduce reductions in plant water loss associated with hardening to prevent winter desiccation. This work makes it possible to use CLM5.0-FATES-Hydro to model realistic impacts from frost droughts on vegetation growth and photosynthesis, leading to more reliable projections of how northern ecosystems respond to climate change. Article in Journal/Newspaper Arctic Climate change Directory of Open Access Journals: DOAJ Articles Arctic Geoscientific Model Development 15 23 8809 8829 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 M. S. A. Lambert H. Tang K. S. Aas F. Stordal R. A. Fisher Y. Fang J. Ding F.-J. W. Parmentier Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro |
topic_facet |
Geology QE1-996.5 |
description |
As temperatures decrease in autumn, vegetation of temperate and boreal ecosystems increases its tolerance to freezing. This process, known as hardening, results in a set of physiological changes at the molecular level that initiate modifications of cell membrane composition and the synthesis of anti-freeze proteins. Together with the freezing of extracellular water, anti-freeze proteins reduce plant water potentials and xylem conductivity. To represent the responses of vegetation to climate change, land surface schemes increasingly employ “hydrodynamic” models that represent the explicit fluxes of water from soil and through plants. The functioning of such schemes under frozen soil conditions, however, is poorly understood. Nonetheless, hydraulic processes are of major importance in the dynamics of these systems, which can suffer from, e.g., winter “frost drought” events. In this study, we implement a scheme that represents hardening into CLM5.0-FATES-Hydro. FATES-Hydro is a plant hydrodynamics module in FATES, a cohort model of vegetation physiology, growth, and dynamics hosted in CLM5.0. We find that, in frozen systems, it is necessary to introduce reductions in plant water loss associated with hardening to prevent winter desiccation. This work makes it possible to use CLM5.0-FATES-Hydro to model realistic impacts from frost droughts on vegetation growth and photosynthesis, leading to more reliable projections of how northern ecosystems respond to climate change. |
format |
Article in Journal/Newspaper |
author |
M. S. A. Lambert H. Tang K. S. Aas F. Stordal R. A. Fisher Y. Fang J. Ding F.-J. W. Parmentier |
author_facet |
M. S. A. Lambert H. Tang K. S. Aas F. Stordal R. A. Fisher Y. Fang J. Ding F.-J. W. Parmentier |
author_sort |
M. S. A. Lambert |
title |
Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro |
title_short |
Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro |
title_full |
Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro |
title_fullStr |
Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro |
title_full_unstemmed |
Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro |
title_sort |
inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the arctic–boreal zone in clm5.0-fates-hydro |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/gmd-15-8809-2022 https://doaj.org/article/0e1396c676b4445caaf0014c05de5e20 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Geoscientific Model Development, Vol 15, Pp 8809-8829 (2022) |
op_relation |
https://gmd.copernicus.org/articles/15/8809/2022/gmd-15-8809-2022.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-15-8809-2022 1991-959X 1991-9603 https://doaj.org/article/0e1396c676b4445caaf0014c05de5e20 |
op_doi |
https://doi.org/10.5194/gmd-15-8809-2022 |
container_title |
Geoscientific Model Development |
container_volume |
15 |
container_issue |
23 |
container_start_page |
8809 |
op_container_end_page |
8829 |
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1766340537048104960 |