Effects of bryophyte and lichen cover on permafrost soil temperature at large scale
Bryophyte and lichen cover on the forest floor at high latitudes exerts an insulating effect on the ground. In this way, the cover decreases mean annual soil temperature and can protect permafrost soil. Climate change, however, may change bryophyte and lichen cover, with effects on the permafrost st...
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Copernicus Publications
2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00011458 2023-05-15T17:57:25+02:00 Effects of bryophyte and lichen cover on permafrost soil temperature at large scale Porada, Philipp Ekici, Altug Beer, Christian 2016-09 electronic https://doi.org/10.5194/tc-10-2291-2016 https://noa.gwlb.de/receive/cop_mods_00011458 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011415/tc-10-2291-2016.pdf https://tc.copernicus.org/articles/10/2291/2016/tc-10-2291-2016.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-2291-2016 https://noa.gwlb.de/receive/cop_mods_00011458 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011415/tc-10-2291-2016.pdf https://tc.copernicus.org/articles/10/2291/2016/tc-10-2291-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/tc-10-2291-2016 2022-02-08T22:56:31Z Bryophyte and lichen cover on the forest floor at high latitudes exerts an insulating effect on the ground. In this way, the cover decreases mean annual soil temperature and can protect permafrost soil. Climate change, however, may change bryophyte and lichen cover, with effects on the permafrost state and related carbon balance. It is, therefore, crucial to predict how the bryophyte and lichen cover will react to environmental change at the global scale. To date, current global land surface models contain only empirical representations of the bryophyte and lichen cover, which makes it impractical to predict the future state and function of bryophytes and lichens. For this reason, we integrate a process-based model of bryophyte and lichen growth into the global land surface model JSBACH (Jena Scheme for Biosphere–Atmosphere Coupling in Hamburg). The model simulates bryophyte and lichen cover on upland sites. Wetlands are not included. We take into account the dynamic nature of the thermal properties of the bryophyte and lichen cover and their relation to environmental factors. Subsequently, we compare simulations with and without bryophyte and lichen cover to quantify the insulating effect of the organisms on the soil. We find an average cooling effect of the bryophyte and lichen cover of 2.7 K on temperature in the topsoil for the region north of 50° N under the current climate. Locally, a cooling of up to 5.7 K may be reached. Moreover, we show that using a simple, empirical representation of the bryophyte and lichen cover without dynamic properties only results in an average cooling of around 0.5 K. This suggests that (a) bryophytes and lichens have a significant impact on soil temperature in high-latitude ecosystems and (b) a process-based description of their thermal properties is necessary for a realistic representation of the cooling effect. The advanced land surface scheme, including a dynamic bryophyte and lichen model, will be the basis for an improved future projection of land–atmosphere heat and carbon exchange. Article in Journal/Newspaper permafrost The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 10 5 2291 2315 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Porada, Philipp Ekici, Altug Beer, Christian Effects of bryophyte and lichen cover on permafrost soil temperature at large scale |
topic_facet |
article Verlagsveröffentlichung |
description |
Bryophyte and lichen cover on the forest floor at high latitudes exerts an insulating effect on the ground. In this way, the cover decreases mean annual soil temperature and can protect permafrost soil. Climate change, however, may change bryophyte and lichen cover, with effects on the permafrost state and related carbon balance. It is, therefore, crucial to predict how the bryophyte and lichen cover will react to environmental change at the global scale. To date, current global land surface models contain only empirical representations of the bryophyte and lichen cover, which makes it impractical to predict the future state and function of bryophytes and lichens. For this reason, we integrate a process-based model of bryophyte and lichen growth into the global land surface model JSBACH (Jena Scheme for Biosphere–Atmosphere Coupling in Hamburg). The model simulates bryophyte and lichen cover on upland sites. Wetlands are not included. We take into account the dynamic nature of the thermal properties of the bryophyte and lichen cover and their relation to environmental factors. Subsequently, we compare simulations with and without bryophyte and lichen cover to quantify the insulating effect of the organisms on the soil. We find an average cooling effect of the bryophyte and lichen cover of 2.7 K on temperature in the topsoil for the region north of 50° N under the current climate. Locally, a cooling of up to 5.7 K may be reached. Moreover, we show that using a simple, empirical representation of the bryophyte and lichen cover without dynamic properties only results in an average cooling of around 0.5 K. This suggests that (a) bryophytes and lichens have a significant impact on soil temperature in high-latitude ecosystems and (b) a process-based description of their thermal properties is necessary for a realistic representation of the cooling effect. The advanced land surface scheme, including a dynamic bryophyte and lichen model, will be the basis for an improved future projection of land–atmosphere heat and carbon exchange. |
format |
Article in Journal/Newspaper |
author |
Porada, Philipp Ekici, Altug Beer, Christian |
author_facet |
Porada, Philipp Ekici, Altug Beer, Christian |
author_sort |
Porada, Philipp |
title |
Effects of bryophyte and lichen cover on permafrost soil temperature at large scale |
title_short |
Effects of bryophyte and lichen cover on permafrost soil temperature at large scale |
title_full |
Effects of bryophyte and lichen cover on permafrost soil temperature at large scale |
title_fullStr |
Effects of bryophyte and lichen cover on permafrost soil temperature at large scale |
title_full_unstemmed |
Effects of bryophyte and lichen cover on permafrost soil temperature at large scale |
title_sort |
effects of bryophyte and lichen cover on permafrost soil temperature at large scale |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-2291-2016 https://noa.gwlb.de/receive/cop_mods_00011458 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011415/tc-10-2291-2016.pdf https://tc.copernicus.org/articles/10/2291/2016/tc-10-2291-2016.pdf |
genre |
permafrost The Cryosphere |
genre_facet |
permafrost The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-2291-2016 https://noa.gwlb.de/receive/cop_mods_00011458 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011415/tc-10-2291-2016.pdf https://tc.copernicus.org/articles/10/2291/2016/tc-10-2291-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-2291-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
5 |
container_start_page |
2291 |
op_container_end_page |
2315 |
_version_ |
1766165835509923840 |