Biome Q10 and Dryness
Temperature sensitivity of soil respiration (Q10) is a critical parameter in carbon cycle models with important implications for climate-carbon feedbacks in the 21st century. The common assumption of a constant Q10, usually with a value of 2.0, was shown to be invalid by a previous model-data fusion...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
CUNY Academic Works
2013
|
Subjects: | |
Online Access: | https://academicworks.cuny.edu/qc_pubs/258 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1263&context=qc_pubs |
id |
ftcityunivny:oai:academicworks.cuny.edu:qc_pubs-1263 |
---|---|
record_format |
openpolar |
spelling |
ftcityunivny:oai:academicworks.cuny.edu:qc_pubs-1263 2023-05-15T18:40:22+02:00 Biome Q10 and Dryness Yi, Chuixiang Ricciuto, Daniel Hendrey, George 2013-12-01T08:00:00Z application/pdf https://academicworks.cuny.edu/qc_pubs/258 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1263&context=qc_pubs English eng CUNY Academic Works https://academicworks.cuny.edu/qc_pubs/258 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1263&context=qc_pubs Publications and Research Climate Change Carbon Cycle Soil Respiration Dryness Climate Soil Science article 2013 ftcityunivny 2021-09-11T22:16:32Z Temperature sensitivity of soil respiration (Q10) is a critical parameter in carbon cycle models with important implications for climate-carbon feedbacks in the 21st century. The common assumption of a constant Q10, usually with a value of 2.0, was shown to be invalid by a previous model-data fusion study that reported biome-specific values of this parameter. We extend the previous analysis by demonstrating that these biome-level values of Q10 also are a function of dryness (R2 = 0.54). When tundra and cultivated lands are excluded, the correlation is much stronger (R2 = 0.92). Therefore dryness is the primary driver for variability in respiration-temperature sensitivity in forest and grassland ecosystems. This finding has important implications for the response of the terrestrial carbon cycle to climate change, as it implies that the increasing dryness would potentially accelerate the respiration temperature sensitivity feedback. Article in Journal/Newspaper Tundra City University of New York: CUNY Academic Works |
institution |
Open Polar |
collection |
City University of New York: CUNY Academic Works |
op_collection_id |
ftcityunivny |
language |
English |
topic |
Climate Change Carbon Cycle Soil Respiration Dryness Climate Soil Science |
spellingShingle |
Climate Change Carbon Cycle Soil Respiration Dryness Climate Soil Science Yi, Chuixiang Ricciuto, Daniel Hendrey, George Biome Q10 and Dryness |
topic_facet |
Climate Change Carbon Cycle Soil Respiration Dryness Climate Soil Science |
description |
Temperature sensitivity of soil respiration (Q10) is a critical parameter in carbon cycle models with important implications for climate-carbon feedbacks in the 21st century. The common assumption of a constant Q10, usually with a value of 2.0, was shown to be invalid by a previous model-data fusion study that reported biome-specific values of this parameter. We extend the previous analysis by demonstrating that these biome-level values of Q10 also are a function of dryness (R2 = 0.54). When tundra and cultivated lands are excluded, the correlation is much stronger (R2 = 0.92). Therefore dryness is the primary driver for variability in respiration-temperature sensitivity in forest and grassland ecosystems. This finding has important implications for the response of the terrestrial carbon cycle to climate change, as it implies that the increasing dryness would potentially accelerate the respiration temperature sensitivity feedback. |
format |
Article in Journal/Newspaper |
author |
Yi, Chuixiang Ricciuto, Daniel Hendrey, George |
author_facet |
Yi, Chuixiang Ricciuto, Daniel Hendrey, George |
author_sort |
Yi, Chuixiang |
title |
Biome Q10 and Dryness |
title_short |
Biome Q10 and Dryness |
title_full |
Biome Q10 and Dryness |
title_fullStr |
Biome Q10 and Dryness |
title_full_unstemmed |
Biome Q10 and Dryness |
title_sort |
biome q10 and dryness |
publisher |
CUNY Academic Works |
publishDate |
2013 |
url |
https://academicworks.cuny.edu/qc_pubs/258 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1263&context=qc_pubs |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Publications and Research |
op_relation |
https://academicworks.cuny.edu/qc_pubs/258 https://academicworks.cuny.edu/cgi/viewcontent.cgi?article=1263&context=qc_pubs |
_version_ |
1766229698194440192 |