Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070

Permafrost soils store enormous quantities of organic carbon. Especially on the alpine Qinghai-Tibet Plateau, global warming induces strong permafrost thawing, which strengthens the microbial decomposition of organic carbon and the emission of the greenhouse gas carbon dioxide (CO2). Enhanced respir...

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Published in:CATENA
Main Authors: Bosch, Anna, Schmidt, Karsten, He, Jin-Sheng, Doerfer, Corina, Scholten, Thomas
Format: Report
Language:unknown
Published: 2017
Subjects:
Online Access:http://210.75.249.4/handle/363003/6644
http://210.75.249.4/handle/363003/17765
http://210.75.249.4/handle/363003/22861
http://210.75.249.4/handle/363003/27957
http://210.75.249.4/handle/363003/33053
https://doi.org/10.1016/j.catena.2016.08.035
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spelling ftchinacascnwipb:oai:210.75.249.4:363003/33053 2023-05-15T17:56:05+02:00 Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070 Bosch, Anna Schmidt, Karsten He, Jin-Sheng Doerfer, Corina Scholten, Thomas 2017-02-01 http://210.75.249.4/handle/363003/6644 http://210.75.249.4/handle/363003/17765 http://210.75.249.4/handle/363003/22861 http://210.75.249.4/handle/363003/27957 http://210.75.249.4/handle/363003/33053 https://doi.org/10.1016/j.catena.2016.08.035 unknown CATENA http://210.75.249.4/handle/363003/6644 doi:10.1016/j.catena.2016.08.035 http://210.75.249.4/handle/363003/17765 http://210.75.249.4/handle/363003/22861 http://210.75.249.4/handle/363003/27957 http://210.75.249.4/handle/363003/33053 期刊论文 2017 ftchinacascnwipb https://doi.org/10.1016/j.catena.2016.08.035 2023-03-26T20:33:19Z Permafrost soils store enormous quantities of organic carbon. Especially on the alpine Qinghai-Tibet Plateau, global warming induces strong permafrost thawing, which strengthens the microbial decomposition of organic carbon and the emission of the greenhouse gas carbon dioxide (CO2). Enhanced respiration rates may intensify climate warming in turn, but the magnitude of future CO2 emissions from this data-scarce region in a changing climate remains highly uncertain. Here, we aim at an area-wide estimation of future potential CO2 emissions for the permafrost region on the Qinghai-Tibet Plateau as key region for climate change studies due to its size and sensitiveness. We calculated four potential soil respiration scenarios for 2050 and 2070 each. Using a regression model, results from laboratory experiments and C stock estimations from other studies, we provide an approximation of total potential soil CO2 emissions on a regional scale ranging from 737.90 g CO2 m(-2) 4224.77 g CO2 m(-2) y(-1). Our calculations as first estimate of thawing-induced CO2 emissions (5123 g CO2 m(-2) y(-1)-3002.82 g CO2 m(2) y(-1)) from permafrost soils of the Qinghai-Tibet Plateau under global warming appear to be consistent to measurements of C loss from thawing permafrost soils measured within other studies. Thawing-induced soil CO2 emissions from permafrost soils with a organic C content ranging from 2.42 g degrees C kg(-1) to 425.23 g C kg(-1) increase general soil respiration by at least about one third on average at a temperature of 5 degrees C. Differences between scenarios remain <1% and thawing-induced CO2 emissions generally decrease over time comparing 2015, 2050 and 2070. With this spatial approximation at a regional scale, a first area-wide estimate of potential CO2 emissions for 2050 and 2070 from permafrost soils of the Qinghai-Tibet Plateau is provided. This offers support of assessing potential area-specific greenhouse gas emissions and more differentiated climate change models. (C) 2016 Elsevier B.V. All rights ... Report permafrost Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) CATENA 149 221 231
institution Open Polar
collection Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences)
op_collection_id ftchinacascnwipb
language unknown
description Permafrost soils store enormous quantities of organic carbon. Especially on the alpine Qinghai-Tibet Plateau, global warming induces strong permafrost thawing, which strengthens the microbial decomposition of organic carbon and the emission of the greenhouse gas carbon dioxide (CO2). Enhanced respiration rates may intensify climate warming in turn, but the magnitude of future CO2 emissions from this data-scarce region in a changing climate remains highly uncertain. Here, we aim at an area-wide estimation of future potential CO2 emissions for the permafrost region on the Qinghai-Tibet Plateau as key region for climate change studies due to its size and sensitiveness. We calculated four potential soil respiration scenarios for 2050 and 2070 each. Using a regression model, results from laboratory experiments and C stock estimations from other studies, we provide an approximation of total potential soil CO2 emissions on a regional scale ranging from 737.90 g CO2 m(-2) 4224.77 g CO2 m(-2) y(-1). Our calculations as first estimate of thawing-induced CO2 emissions (5123 g CO2 m(-2) y(-1)-3002.82 g CO2 m(2) y(-1)) from permafrost soils of the Qinghai-Tibet Plateau under global warming appear to be consistent to measurements of C loss from thawing permafrost soils measured within other studies. Thawing-induced soil CO2 emissions from permafrost soils with a organic C content ranging from 2.42 g degrees C kg(-1) to 425.23 g C kg(-1) increase general soil respiration by at least about one third on average at a temperature of 5 degrees C. Differences between scenarios remain <1% and thawing-induced CO2 emissions generally decrease over time comparing 2015, 2050 and 2070. With this spatial approximation at a regional scale, a first area-wide estimate of potential CO2 emissions for 2050 and 2070 from permafrost soils of the Qinghai-Tibet Plateau is provided. This offers support of assessing potential area-specific greenhouse gas emissions and more differentiated climate change models. (C) 2016 Elsevier B.V. All rights ...
format Report
author Bosch, Anna
Schmidt, Karsten
He, Jin-Sheng
Doerfer, Corina
Scholten, Thomas
spellingShingle Bosch, Anna
Schmidt, Karsten
He, Jin-Sheng
Doerfer, Corina
Scholten, Thomas
Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070
author_facet Bosch, Anna
Schmidt, Karsten
He, Jin-Sheng
Doerfer, Corina
Scholten, Thomas
author_sort Bosch, Anna
title Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070
title_short Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070
title_full Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070
title_fullStr Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070
title_full_unstemmed Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070
title_sort potential co2 emissions from defrosting permafrost soils of the qinghai-tibet plateau under different scenarios of climate change in 2050 and 2070
publishDate 2017
url http://210.75.249.4/handle/363003/6644
http://210.75.249.4/handle/363003/17765
http://210.75.249.4/handle/363003/22861
http://210.75.249.4/handle/363003/27957
http://210.75.249.4/handle/363003/33053
https://doi.org/10.1016/j.catena.2016.08.035
genre permafrost
genre_facet permafrost
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doi:10.1016/j.catena.2016.08.035
http://210.75.249.4/handle/363003/17765
http://210.75.249.4/handle/363003/22861
http://210.75.249.4/handle/363003/27957
http://210.75.249.4/handle/363003/33053
op_doi https://doi.org/10.1016/j.catena.2016.08.035
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