How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming?
Abstract The active layer thickness (ALT) in permafrost regions regulates hydrological cycles, water sustainability, and ecosystem functions in the cryosphere and is extremely sensitive to climate change. Previous studies often focused on the impacts of rising temperature on the ALT, while the roles...
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crioppubl:10.1088/1748-9326/ac6c9a 2024-06-23T07:44:56+00:00 How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? Ji, Fang Fan, Linfeng Kuang, Xingxing Li, Xin Cao, Bin Cheng, Guodong Yao, Yingying Zheng, Chunmiao National Natural Science Foundation of China 2022 http://dx.doi.org/10.1088/1748-9326/ac6c9a https://iopscience.iop.org/article/10.1088/1748-9326/ac6c9a https://iopscience.iop.org/article/10.1088/1748-9326/ac6c9a/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters volume 17, issue 6, page 064012 ISSN 1748-9326 journal-article 2022 crioppubl https://doi.org/10.1088/1748-9326/ac6c9a 2024-06-10T04:11:16Z Abstract The active layer thickness (ALT) in permafrost regions regulates hydrological cycles, water sustainability, and ecosystem functions in the cryosphere and is extremely sensitive to climate change. Previous studies often focused on the impacts of rising temperature on the ALT, while the roles of soil water content and soil granularity have rarely been investigated. Here, we incorporate alterations of soil water contents in soil thermal properties across various soil granularities and assess spatiotemporal ALT dynamics on the Qinghai-Tibet Plateau (QTP). The regional average ALT on the QTP is projected to be nearly 4 m by 2100. Our results indicate that soil wetting decelerates the active layer thickening in response to warming, while latent heat exerts stronger control on ALTs than thermal conductivity does. Under similar warming conditions, active layers thicken faster in coarse soils than in fine soils. An important ramification of this study is that neglecting soil wetting may cause overestimations of active layer thickening on the QTP. Article in Journal/Newspaper Active layer thickness permafrost IOP Publishing Environmental Research Letters 17 6 064012 |
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Abstract The active layer thickness (ALT) in permafrost regions regulates hydrological cycles, water sustainability, and ecosystem functions in the cryosphere and is extremely sensitive to climate change. Previous studies often focused on the impacts of rising temperature on the ALT, while the roles of soil water content and soil granularity have rarely been investigated. Here, we incorporate alterations of soil water contents in soil thermal properties across various soil granularities and assess spatiotemporal ALT dynamics on the Qinghai-Tibet Plateau (QTP). The regional average ALT on the QTP is projected to be nearly 4 m by 2100. Our results indicate that soil wetting decelerates the active layer thickening in response to warming, while latent heat exerts stronger control on ALTs than thermal conductivity does. Under similar warming conditions, active layers thicken faster in coarse soils than in fine soils. An important ramification of this study is that neglecting soil wetting may cause overestimations of active layer thickening on the QTP. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Ji, Fang Fan, Linfeng Kuang, Xingxing Li, Xin Cao, Bin Cheng, Guodong Yao, Yingying Zheng, Chunmiao |
spellingShingle |
Ji, Fang Fan, Linfeng Kuang, Xingxing Li, Xin Cao, Bin Cheng, Guodong Yao, Yingying Zheng, Chunmiao How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? |
author_facet |
Ji, Fang Fan, Linfeng Kuang, Xingxing Li, Xin Cao, Bin Cheng, Guodong Yao, Yingying Zheng, Chunmiao |
author_sort |
Ji, Fang |
title |
How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? |
title_short |
How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? |
title_full |
How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? |
title_fullStr |
How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? |
title_full_unstemmed |
How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? |
title_sort |
how does soil water content influence permafrost evolution on the qinghai-tibet plateau under climate warming? |
publisher |
IOP Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1088/1748-9326/ac6c9a https://iopscience.iop.org/article/10.1088/1748-9326/ac6c9a https://iopscience.iop.org/article/10.1088/1748-9326/ac6c9a/pdf |
genre |
Active layer thickness permafrost |
genre_facet |
Active layer thickness permafrost |
op_source |
Environmental Research Letters volume 17, issue 6, page 064012 ISSN 1748-9326 |
op_rights |
http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/ac6c9a |
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Environmental Research Letters |
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17 |
container_issue |
6 |
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064012 |
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1802641345935835136 |