Spatial–Temporal Characteristics of Freezing/Thawing Index and Permafrost Distribution in Heilongjiang Province, China
Under the trend of climate warming, the high-latitude permafrost in Heilongjiang Province is becoming seriously degraded. The question of how to quantitatively analyze the spatial and temporal trends of multi-year permafrost has become fundamental for current permafrost research. In this study, the...
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2022
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fttriple:oai:gotriple.eu:oai:doaj.org/article:83a4411b512a4abfa64eb13101755add 2023-05-15T17:55:31+02:00 Spatial–Temporal Characteristics of Freezing/Thawing Index and Permafrost Distribution in Heilongjiang Province, China Chengjie Song Changlei Dai Yaqi Gao Chuang Wang Miao Yu Weiming Tu Minghui Jia Ruotong Li 2022-12-01 https://doi.org/10.3390/su142416899 https://doaj.org/article/83a4411b512a4abfa64eb13101755add en eng MDPI AG doi:10.3390/su142416899 2071-1050 https://doaj.org/article/83a4411b512a4abfa64eb13101755add undefined Sustainability, Vol 14, Iss 16899, p 16899 (2022) Heilongjiang province freezing/thawing index permafrost spatial–temporal distribution southern boundary of permafrost geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.3390/su142416899 2023-01-22T19:34:36Z Under the trend of climate warming, the high-latitude permafrost in Heilongjiang Province is becoming seriously degraded. The question of how to quantitatively analyze the spatial and temporal trends of multi-year permafrost has become fundamental for current permafrost research. In this study, the temporal and spatial variations of annual mean air temperature (MAAT), annual mean ground temperature (MAGST) and freezing/thawing index based on air and surface temperature data from 34 meteorological stations in Heilongjiang Province from 1971–2019, as well as the variation characteristics of permafrost distribution, were analyzed based on the freezing index model. The results showed that both MAAT and MAGST in Heilongjiang Province tended to decrease with the increase of altitude and latitude. For interannual variation, the MAAT and MAGST warming rates tended to be consistent across Heilongjiang Province, with multi-year variation from −8.64 to 5.60 °C and from −6.52 to 7.58 °C, respectively. From 1971–2019, the mean annual air freezing index (AFI) and ground surface freezing index (GFI) declined at −5.07 °C·d·a−1 and −5.04 °C·d·a−1, respectively, whereas the mean annual air thawing index (ATI) and ground surface thawing index (GTI) were elevated at 7.63 °C·d·a−1 and 11.89 °C·d·a−1, respectively. The spatial distribution of the multiyear mean AFI, ATI, GFI and GTI exhibited a latitudinal trend, whereas the effect of altitude in the northern mountainous areas was greater than that of latitude. Permafrost was primarily discovered in the Daxing’an and Xiaoxing’an Mountains in the north, and sporadically in the central mountainous regions. The southern boundary of permafrost shifted nearly 2° to the north from 1970 to 2010s, while the southern boundary of permafrost in Heilongjiang Province was stable at nearly 51° N. The total area of permafrost narrowed from 1.11 × 105 km2 in the 1970s to 6.53 × 104 km2 in the 2010s. The results of this study take on a critical significance for the analysis of the trend of perennial ... Article in Journal/Newspaper permafrost Unknown Sustainability 14 24 16899 |
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Open Polar |
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Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Heilongjiang province freezing/thawing index permafrost spatial–temporal distribution southern boundary of permafrost geo envir |
spellingShingle |
Heilongjiang province freezing/thawing index permafrost spatial–temporal distribution southern boundary of permafrost geo envir Chengjie Song Changlei Dai Yaqi Gao Chuang Wang Miao Yu Weiming Tu Minghui Jia Ruotong Li Spatial–Temporal Characteristics of Freezing/Thawing Index and Permafrost Distribution in Heilongjiang Province, China |
topic_facet |
Heilongjiang province freezing/thawing index permafrost spatial–temporal distribution southern boundary of permafrost geo envir |
description |
Under the trend of climate warming, the high-latitude permafrost in Heilongjiang Province is becoming seriously degraded. The question of how to quantitatively analyze the spatial and temporal trends of multi-year permafrost has become fundamental for current permafrost research. In this study, the temporal and spatial variations of annual mean air temperature (MAAT), annual mean ground temperature (MAGST) and freezing/thawing index based on air and surface temperature data from 34 meteorological stations in Heilongjiang Province from 1971–2019, as well as the variation characteristics of permafrost distribution, were analyzed based on the freezing index model. The results showed that both MAAT and MAGST in Heilongjiang Province tended to decrease with the increase of altitude and latitude. For interannual variation, the MAAT and MAGST warming rates tended to be consistent across Heilongjiang Province, with multi-year variation from −8.64 to 5.60 °C and from −6.52 to 7.58 °C, respectively. From 1971–2019, the mean annual air freezing index (AFI) and ground surface freezing index (GFI) declined at −5.07 °C·d·a−1 and −5.04 °C·d·a−1, respectively, whereas the mean annual air thawing index (ATI) and ground surface thawing index (GTI) were elevated at 7.63 °C·d·a−1 and 11.89 °C·d·a−1, respectively. The spatial distribution of the multiyear mean AFI, ATI, GFI and GTI exhibited a latitudinal trend, whereas the effect of altitude in the northern mountainous areas was greater than that of latitude. Permafrost was primarily discovered in the Daxing’an and Xiaoxing’an Mountains in the north, and sporadically in the central mountainous regions. The southern boundary of permafrost shifted nearly 2° to the north from 1970 to 2010s, while the southern boundary of permafrost in Heilongjiang Province was stable at nearly 51° N. The total area of permafrost narrowed from 1.11 × 105 km2 in the 1970s to 6.53 × 104 km2 in the 2010s. The results of this study take on a critical significance for the analysis of the trend of perennial ... |
format |
Article in Journal/Newspaper |
author |
Chengjie Song Changlei Dai Yaqi Gao Chuang Wang Miao Yu Weiming Tu Minghui Jia Ruotong Li |
author_facet |
Chengjie Song Changlei Dai Yaqi Gao Chuang Wang Miao Yu Weiming Tu Minghui Jia Ruotong Li |
author_sort |
Chengjie Song |
title |
Spatial–Temporal Characteristics of Freezing/Thawing Index and Permafrost Distribution in Heilongjiang Province, China |
title_short |
Spatial–Temporal Characteristics of Freezing/Thawing Index and Permafrost Distribution in Heilongjiang Province, China |
title_full |
Spatial–Temporal Characteristics of Freezing/Thawing Index and Permafrost Distribution in Heilongjiang Province, China |
title_fullStr |
Spatial–Temporal Characteristics of Freezing/Thawing Index and Permafrost Distribution in Heilongjiang Province, China |
title_full_unstemmed |
Spatial–Temporal Characteristics of Freezing/Thawing Index and Permafrost Distribution in Heilongjiang Province, China |
title_sort |
spatial–temporal characteristics of freezing/thawing index and permafrost distribution in heilongjiang province, china |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/su142416899 https://doaj.org/article/83a4411b512a4abfa64eb13101755add |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Sustainability, Vol 14, Iss 16899, p 16899 (2022) |
op_relation |
doi:10.3390/su142416899 2071-1050 https://doaj.org/article/83a4411b512a4abfa64eb13101755add |
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undefined |
op_doi |
https://doi.org/10.3390/su142416899 |
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Sustainability |
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14 |
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24 |
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16899 |
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