Thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the Qinghai–Tibet Plateau, China
Climate warming and engineering activities have various impacts on the thermal regime of permafrost in alpine ecosystems of the Qinghai–Tibet Plateau. Using recent observations of permafrost thermal regimes along the Qinghai–Tibet highway and railway, the changes of such regimes beneath embankments...
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Copernicus Publications
2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00011724 2023-05-15T17:55:44+02:00 Thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the Qinghai–Tibet Plateau, China Wu, Qingbai Zhang, Zhongqiong Gao, Siru Ma, Wei 2016-08 electronic https://doi.org/10.5194/tc-10-1695-2016 https://noa.gwlb.de/receive/cop_mods_00011724 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011681/tc-10-1695-2016.pdf https://tc.copernicus.org/articles/10/1695/2016/tc-10-1695-2016.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-1695-2016 https://noa.gwlb.de/receive/cop_mods_00011724 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011681/tc-10-1695-2016.pdf https://tc.copernicus.org/articles/10/1695/2016/tc-10-1695-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/tc-10-1695-2016 2022-02-08T22:56:23Z Climate warming and engineering activities have various impacts on the thermal regime of permafrost in alpine ecosystems of the Qinghai–Tibet Plateau. Using recent observations of permafrost thermal regimes along the Qinghai–Tibet highway and railway, the changes of such regimes beneath embankments constructed in alpine meadows and steppes are studied. The results show that alpine meadows on the Qinghai–Tibet Plateau can have a controlling role among engineering construction effects on permafrost beneath embankments. As before railway construction, the artificial permafrost table (APT) beneath embankments is not only affected by climate change and engineering activities but is also controlled by alpine ecosystems. However, the change rate of APT is not dependent on ecosystem type, which is predominantly affected by climate change and engineering activities. Instead, the rate is mainly related to cooling effects of railway ballast and heat absorption effects of asphalt pavement. No large difference between alpine and steppe can be identified regarding the variation of soil temperature beneath embankments, but this difference is readily identified in the variation of mean annual soil temperature with depth. The vegetation layer in alpine meadows has an insulation role among engineering activity effects on permafrost beneath embankments, but this insulation gradually disappears because the layer decays and compresses over time. On the whole, this layer is advantageous for alleviating permafrost temperature rise in the short term, but its effect gradually weakens in the long term. Article in Journal/Newspaper permafrost The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 10 4 1695 1706 |
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article Verlagsveröffentlichung Wu, Qingbai Zhang, Zhongqiong Gao, Siru Ma, Wei Thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the Qinghai–Tibet Plateau, China |
topic_facet |
article Verlagsveröffentlichung |
description |
Climate warming and engineering activities have various impacts on the thermal regime of permafrost in alpine ecosystems of the Qinghai–Tibet Plateau. Using recent observations of permafrost thermal regimes along the Qinghai–Tibet highway and railway, the changes of such regimes beneath embankments constructed in alpine meadows and steppes are studied. The results show that alpine meadows on the Qinghai–Tibet Plateau can have a controlling role among engineering construction effects on permafrost beneath embankments. As before railway construction, the artificial permafrost table (APT) beneath embankments is not only affected by climate change and engineering activities but is also controlled by alpine ecosystems. However, the change rate of APT is not dependent on ecosystem type, which is predominantly affected by climate change and engineering activities. Instead, the rate is mainly related to cooling effects of railway ballast and heat absorption effects of asphalt pavement. No large difference between alpine and steppe can be identified regarding the variation of soil temperature beneath embankments, but this difference is readily identified in the variation of mean annual soil temperature with depth. The vegetation layer in alpine meadows has an insulation role among engineering activity effects on permafrost beneath embankments, but this insulation gradually disappears because the layer decays and compresses over time. On the whole, this layer is advantageous for alleviating permafrost temperature rise in the short term, but its effect gradually weakens in the long term. |
format |
Article in Journal/Newspaper |
author |
Wu, Qingbai Zhang, Zhongqiong Gao, Siru Ma, Wei |
author_facet |
Wu, Qingbai Zhang, Zhongqiong Gao, Siru Ma, Wei |
author_sort |
Wu, Qingbai |
title |
Thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the Qinghai–Tibet Plateau, China |
title_short |
Thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the Qinghai–Tibet Plateau, China |
title_full |
Thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the Qinghai–Tibet Plateau, China |
title_fullStr |
Thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the Qinghai–Tibet Plateau, China |
title_full_unstemmed |
Thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the Qinghai–Tibet Plateau, China |
title_sort |
thermal impacts of engineering activities and vegetation layer on permafrost in different alpine ecosystems of the qinghai–tibet plateau, china |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-1695-2016 https://noa.gwlb.de/receive/cop_mods_00011724 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011681/tc-10-1695-2016.pdf https://tc.copernicus.org/articles/10/1695/2016/tc-10-1695-2016.pdf |
genre |
permafrost The Cryosphere |
genre_facet |
permafrost The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-1695-2016 https://noa.gwlb.de/receive/cop_mods_00011724 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011681/tc-10-1695-2016.pdf https://tc.copernicus.org/articles/10/1695/2016/tc-10-1695-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-1695-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
4 |
container_start_page |
1695 |
op_container_end_page |
1706 |
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1766163713093533696 |