Variations in Permafrost Temperature and Stability of Alpine Meadows in the Source Area of the Datong River, Northeastern Qinghai‐Tibet Plateau, China
ABSTRACT Zonal alpine meadow is widespread in the source area of the Datong River, northeastern Qinghai‐Tibet Plateau, China, and can be divided into typical meadow and swamp meadow, according to variations in the soil moisture content. A total of 56 measurements of the mean annual ground temperatur...
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crwiley:10.1002/ppp.1822 2024-06-02T08:12:56+00:00 Variations in Permafrost Temperature and Stability of Alpine Meadows in the Source Area of the Datong River, Northeastern Qinghai‐Tibet Plateau, China Li, Jing Sheng, Yu Chen, Ji Wu, Jichun Wang, Shengting Major State Basic Research Development Program of China National Natural Science Foundation of China the Research Program of the State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences 2014 http://dx.doi.org/10.1002/ppp.1822 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1822 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1822 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 25, issue 4, page 307-319 ISSN 1045-6740 1099-1530 journal-article 2014 crwiley https://doi.org/10.1002/ppp.1822 2024-05-03T11:06:29Z ABSTRACT Zonal alpine meadow is widespread in the source area of the Datong River, northeastern Qinghai‐Tibet Plateau, China, and can be divided into typical meadow and swamp meadow, according to variations in the soil moisture content. A total of 56 measurements of the mean annual ground temperature (MAGT) revealed a significant difference in the MAGT of the two vegetation types. The measured MAGT varied from ‐2.8 to 0.46°C in the swamp meadow, and from ‐0.6 to 2.5°C in the typical meadow. Measurements of 0°C were found at approximately 3710 m asl and 3660 m asl in the typical meadow and swamp meadow, respectively. Using the measured MAGT and calculated topo‐climatic parameters as dependent and independent variables, two statistical models of MAGT were constructed for each vegetation type. The calculated results were classified into different zones and types to determine the permafrost stability in different vegetated areas. Semi‐stable permafrost (‐3.0°C <MAGT ≤ ‐1.5°C) and transitory permafrost (‐1.5°C <MAGT ≤ ‐0.5°C) were the two predominant permafrost types in the swamp meadow, whereas unstable permafrost (‐0.5°C <MAGT ≤ +0.5°C) and seasonally frozen ground (MAGT >0.5°C) were the two main types in the typical meadow. The differences in permafrost temperatures and stability between the two vegetation types can be explained by the local environmental characteristics, including vegetation cover and soil water content. Copyright © 2014 John Wiley & Sons, Ltd. Article in Journal/Newspaper permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 25 4 307 319 |
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Open Polar |
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English |
description |
ABSTRACT Zonal alpine meadow is widespread in the source area of the Datong River, northeastern Qinghai‐Tibet Plateau, China, and can be divided into typical meadow and swamp meadow, according to variations in the soil moisture content. A total of 56 measurements of the mean annual ground temperature (MAGT) revealed a significant difference in the MAGT of the two vegetation types. The measured MAGT varied from ‐2.8 to 0.46°C in the swamp meadow, and from ‐0.6 to 2.5°C in the typical meadow. Measurements of 0°C were found at approximately 3710 m asl and 3660 m asl in the typical meadow and swamp meadow, respectively. Using the measured MAGT and calculated topo‐climatic parameters as dependent and independent variables, two statistical models of MAGT were constructed for each vegetation type. The calculated results were classified into different zones and types to determine the permafrost stability in different vegetated areas. Semi‐stable permafrost (‐3.0°C <MAGT ≤ ‐1.5°C) and transitory permafrost (‐1.5°C <MAGT ≤ ‐0.5°C) were the two predominant permafrost types in the swamp meadow, whereas unstable permafrost (‐0.5°C <MAGT ≤ +0.5°C) and seasonally frozen ground (MAGT >0.5°C) were the two main types in the typical meadow. The differences in permafrost temperatures and stability between the two vegetation types can be explained by the local environmental characteristics, including vegetation cover and soil water content. Copyright © 2014 John Wiley & Sons, Ltd. |
author2 |
Major State Basic Research Development Program of China National Natural Science Foundation of China the Research Program of the State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences |
format |
Article in Journal/Newspaper |
author |
Li, Jing Sheng, Yu Chen, Ji Wu, Jichun Wang, Shengting |
spellingShingle |
Li, Jing Sheng, Yu Chen, Ji Wu, Jichun Wang, Shengting Variations in Permafrost Temperature and Stability of Alpine Meadows in the Source Area of the Datong River, Northeastern Qinghai‐Tibet Plateau, China |
author_facet |
Li, Jing Sheng, Yu Chen, Ji Wu, Jichun Wang, Shengting |
author_sort |
Li, Jing |
title |
Variations in Permafrost Temperature and Stability of Alpine Meadows in the Source Area of the Datong River, Northeastern Qinghai‐Tibet Plateau, China |
title_short |
Variations in Permafrost Temperature and Stability of Alpine Meadows in the Source Area of the Datong River, Northeastern Qinghai‐Tibet Plateau, China |
title_full |
Variations in Permafrost Temperature and Stability of Alpine Meadows in the Source Area of the Datong River, Northeastern Qinghai‐Tibet Plateau, China |
title_fullStr |
Variations in Permafrost Temperature and Stability of Alpine Meadows in the Source Area of the Datong River, Northeastern Qinghai‐Tibet Plateau, China |
title_full_unstemmed |
Variations in Permafrost Temperature and Stability of Alpine Meadows in the Source Area of the Datong River, Northeastern Qinghai‐Tibet Plateau, China |
title_sort |
variations in permafrost temperature and stability of alpine meadows in the source area of the datong river, northeastern qinghai‐tibet plateau, china |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1002/ppp.1822 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1822 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1822 |
genre |
permafrost Permafrost and Periglacial Processes |
genre_facet |
permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 25, issue 4, page 307-319 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1822 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
25 |
container_issue |
4 |
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307 |
op_container_end_page |
319 |
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1800759527645118464 |