How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming?
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...
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ftdoajarticles:oai:doaj.org/article:e69f0cd289b042f4a79e5264c8495727 2023-09-05T13:11:09+02:00 How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? Fang Ji Linfeng Fan Xingxing Kuang Xin Li Bin Cao Guodong Cheng Yingying Yao Chunmiao Zheng 2022-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ac6c9a https://doaj.org/article/e69f0cd289b042f4a79e5264c8495727 EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ac6c9a https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac6c9a 1748-9326 https://doaj.org/article/e69f0cd289b042f4a79e5264c8495727 Environmental Research Letters, Vol 17, Iss 6, p 064012 (2022) permafrost active layer thickness soil water content Qinghai-Tibet Plateau climate change Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2022 ftdoajarticles https://doi.org/10.1088/1748-9326/ac6c9a 2023-08-13T00:36:40Z 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 Directory of Open Access Journals: DOAJ Articles Environmental Research Letters 17 6 064012 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost active layer thickness soil water content Qinghai-Tibet Plateau climate change Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
permafrost active layer thickness soil water content Qinghai-Tibet Plateau climate change Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Fang Ji Linfeng Fan Xingxing Kuang Xin Li Bin Cao Guodong Cheng Yingying Yao Chunmiao Zheng How does soil water content influence permafrost evolution on the Qinghai-Tibet Plateau under climate warming? |
topic_facet |
permafrost active layer thickness soil water content Qinghai-Tibet Plateau climate change Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Fang Ji Linfeng Fan Xingxing Kuang Xin Li Bin Cao Guodong Cheng Yingying Yao Chunmiao Zheng |
author_facet |
Fang Ji Linfeng Fan Xingxing Kuang Xin Li Bin Cao Guodong Cheng Yingying Yao Chunmiao Zheng |
author_sort |
Fang Ji |
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 |
https://doi.org/10.1088/1748-9326/ac6c9a https://doaj.org/article/e69f0cd289b042f4a79e5264c8495727 |
genre |
Active layer thickness permafrost |
genre_facet |
Active layer thickness permafrost |
op_source |
Environmental Research Letters, Vol 17, Iss 6, p 064012 (2022) |
op_relation |
https://doi.org/10.1088/1748-9326/ac6c9a https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac6c9a 1748-9326 https://doaj.org/article/e69f0cd289b042f4a79e5264c8495727 |
op_doi |
https://doi.org/10.1088/1748-9326/ac6c9a |
container_title |
Environmental Research Letters |
container_volume |
17 |
container_issue |
6 |
container_start_page |
064012 |
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1776198166996058112 |