Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems
Abstract In terrestrial high‐latitude regions, observations indicate recent changes in snow cover, permafrost, and soil freeze–thaw transitions due to climate change. These modifications may result in temporal shifts in the growing season and the associated rates of terrestrial productivity. Changes...
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crwiley:10.1111/j.1365-2486.2006.01113.x 2024-10-06T13:52:08+00:00 Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems EUSKIRCHEN, E. S. McGUIRE, A. D. KICKLIGHTER, D. W. ZHUANG, Q. CLEIN, J. S. DARGAVILLE, R. J. DYE, D. G. KIMBALL, J. S. McDONALD, K. C. MELILLO, J. M. ROMANOVSKY, V. E. SMITH, N. V. 2006 http://dx.doi.org/10.1111/j.1365-2486.2006.01113.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2006.01113.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2006.01113.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 12, issue 4, page 731-750 ISSN 1354-1013 1365-2486 journal-article 2006 crwiley https://doi.org/10.1111/j.1365-2486.2006.01113.x 2024-09-11T04:14:32Z Abstract In terrestrial high‐latitude regions, observations indicate recent changes in snow cover, permafrost, and soil freeze–thaw transitions due to climate change. These modifications may result in temporal shifts in the growing season and the associated rates of terrestrial productivity. Changes in productivity will influence the ability of these ecosystems to sequester atmospheric CO 2 . We use the terrestrial ecosystem model (TEM), which simulates the soil thermal regime, in addition to terrestrial carbon (C), nitrogen and water dynamics, to explore these issues over the years 1960–2100 in extratropical regions (30–90°N). Our model simulations show decreases in snow cover and permafrost stability from 1960 to 2100. Decreases in snow cover agree well with National Oceanic and Atmospheric Administration satellite observations collected between the years 1972 and 2000, with Pearson rank correlation coefficients between 0.58 and 0.65. Model analyses also indicate a trend towards an earlier thaw date of frozen soils and the onset of the growing season in the spring by approximately 2–4 days from 1988 to 2000. Between 1988 and 2000, satellite records yield a slightly stronger trend in thaw and the onset of the growing season, averaging between 5 and 8 days earlier. In both, the TEM simulations and satellite records, trends in day of freeze in the autumn are weaker, such that overall increases in growing season length are due primarily to earlier thaw. Although regions with the longest snow cover duration displayed the greatest increase in growing season length, these regions maintained smaller increases in productivity and heterotrophic respiration than those regions with shorter duration of snow cover and less of an increase in growing season length. Concurrent with increases in growing season length, we found a reduction in soil C and increases in vegetation C, with greatest losses of soil C occurring in those areas with more vegetation, but simulations also suggest that this trend could reverse in the future. ... Article in Journal/Newspaper permafrost Wiley Online Library Global Change Biology 12 4 731 750 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract In terrestrial high‐latitude regions, observations indicate recent changes in snow cover, permafrost, and soil freeze–thaw transitions due to climate change. These modifications may result in temporal shifts in the growing season and the associated rates of terrestrial productivity. Changes in productivity will influence the ability of these ecosystems to sequester atmospheric CO 2 . We use the terrestrial ecosystem model (TEM), which simulates the soil thermal regime, in addition to terrestrial carbon (C), nitrogen and water dynamics, to explore these issues over the years 1960–2100 in extratropical regions (30–90°N). Our model simulations show decreases in snow cover and permafrost stability from 1960 to 2100. Decreases in snow cover agree well with National Oceanic and Atmospheric Administration satellite observations collected between the years 1972 and 2000, with Pearson rank correlation coefficients between 0.58 and 0.65. Model analyses also indicate a trend towards an earlier thaw date of frozen soils and the onset of the growing season in the spring by approximately 2–4 days from 1988 to 2000. Between 1988 and 2000, satellite records yield a slightly stronger trend in thaw and the onset of the growing season, averaging between 5 and 8 days earlier. In both, the TEM simulations and satellite records, trends in day of freeze in the autumn are weaker, such that overall increases in growing season length are due primarily to earlier thaw. Although regions with the longest snow cover duration displayed the greatest increase in growing season length, these regions maintained smaller increases in productivity and heterotrophic respiration than those regions with shorter duration of snow cover and less of an increase in growing season length. Concurrent with increases in growing season length, we found a reduction in soil C and increases in vegetation C, with greatest losses of soil C occurring in those areas with more vegetation, but simulations also suggest that this trend could reverse in the future. ... |
format |
Article in Journal/Newspaper |
author |
EUSKIRCHEN, E. S. McGUIRE, A. D. KICKLIGHTER, D. W. ZHUANG, Q. CLEIN, J. S. DARGAVILLE, R. J. DYE, D. G. KIMBALL, J. S. McDONALD, K. C. MELILLO, J. M. ROMANOVSKY, V. E. SMITH, N. V. |
spellingShingle |
EUSKIRCHEN, E. S. McGUIRE, A. D. KICKLIGHTER, D. W. ZHUANG, Q. CLEIN, J. S. DARGAVILLE, R. J. DYE, D. G. KIMBALL, J. S. McDONALD, K. C. MELILLO, J. M. ROMANOVSKY, V. E. SMITH, N. V. Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems |
author_facet |
EUSKIRCHEN, E. S. McGUIRE, A. D. KICKLIGHTER, D. W. ZHUANG, Q. CLEIN, J. S. DARGAVILLE, R. J. DYE, D. G. KIMBALL, J. S. McDONALD, K. C. MELILLO, J. M. ROMANOVSKY, V. E. SMITH, N. V. |
author_sort |
EUSKIRCHEN, E. S. |
title |
Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems |
title_short |
Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems |
title_full |
Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems |
title_fullStr |
Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems |
title_full_unstemmed |
Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems |
title_sort |
importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high‐latitude ecosystems |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1365-2486.2006.01113.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2486.2006.01113.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2486.2006.01113.x |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Global Change Biology volume 12, issue 4, page 731-750 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2486.2006.01113.x |
container_title |
Global Change Biology |
container_volume |
12 |
container_issue |
4 |
container_start_page |
731 |
op_container_end_page |
750 |
_version_ |
1812180468008747008 |