Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decade
<p>Under a pronounced climate warming, permafrost has been degrading in most areas globally, but it is still unclear in the northwestern part of the Da Xing'anling Mountains, Northeast China. According to a 10-year observation of permafrost and active-layer temperatures, the multi-year av...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2022-09-01
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| Series: | Earth System Science Data |
| Online Access: | https://essd.copernicus.org/articles/14/3947/2022/essd-14-3947-2022.pdf |
| _version_ | 1818000898389966848 |
|---|---|
| author | X. Chang X. Chang H. Jin H. Jin R. He Y. Zhang X. Li X. Jin G. Li |
| author_facet | X. Chang X. Chang H. Jin H. Jin R. He Y. Zhang X. Li X. Jin G. Li |
| author_sort | X. Chang |
| collection | DOAJ |
| description | <p>Under a pronounced climate warming, permafrost has been degrading
in most areas globally, but it is still unclear in the northwestern part of
the Da Xing'anling Mountains, Northeast China. According to a 10-year observation of permafrost and active-layer temperatures, the multi-year
average of mean annual ground temperatures at 20 m was <span class="inline-formula">−</span>2.83, <span class="inline-formula">−</span>0.94,
<span class="inline-formula">−</span>0.80, <span class="inline-formula">−</span>0.70, <span class="inline-formula">−</span>0.60, and <span class="inline-formula">−</span>0.49 <span class="inline-formula"><sup>∘</sup></span>C, respectively, at boreholes Gen'he4 (GH4), Mangui3 (MG3), Mangui1 (MG1), Mangui2 (MG2), Gen'he5 (GH5),
and Yituli'he2 (YTLH2), with the depths of the permafrost table varying from 1.1 to 7.0 m. Ground cooling at shallow depths has been detected, resulting in
declining thaw depths in Yituli'he during 2009–2020, possibly due to
relatively stable mean positive air temperature and declining snow cover and a dwindling local population. In most study areas (e.g., Mangui and Gen'he),
permafrost warming is particularly pronounced at larger depths (even at 80 m). These results can provide important information for regional development
and engineering design and maintenance and also provide a long-term ground temperature dataset for the validation of models relevant to the thermal
dynamics of permafrost in the Da Xing'anling Mountains. All of the datasets
are published through the National Tibetan Plateau Data Center (TPDC), and
the link is <a href="https://doi.org/10.11888/Geocry.tpdc.271752">https://doi.org/10.11888/Geocry.tpdc.271752</a> (Chang,
2021).</p> |
| first_indexed | 2024-04-14T03:26:48Z |
| format | Article |
| id | doaj.art-ee849aa4b4db4da69cadd9960663ee4c |
| institution | Directory Open Access Journal |
| issn | 1866-3508 1866-3516 |
| language | English |
| last_indexed | 2024-04-14T03:26:48Z |
| publishDate | 2022-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Science Data |
| spelling | doaj.art-ee849aa4b4db4da69cadd9960663ee4c2022-12-22T02:15:08ZengCopernicus PublicationsEarth System Science Data1866-35081866-35162022-09-01143947395910.5194/essd-14-3947-2022Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decadeX. Chang0X. Chang1H. Jin2H. Jin3R. He4Y. Zhang5X. Li6X. Jin7G. Li8School of Earth Science and Spatial Information Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, ChinaState Key Laboratory of Frozen Soils Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaState Key Laboratory of Frozen Soils Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaSchool of Civil Engineering, Institute of Cold-Regions Science and Engineering, and Northeast-China Observatory and Research-Station of Permafrost Geo-Environment (Ministry of Education), Northeast Forestry University, Harbin 150040, ChinaState Key Laboratory of Frozen Soils Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaSchool of Earth Science and Spatial Information Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, ChinaKey Laboratory of Sustainable Forest Ecosystem Management (Ministry of Education) and College of Forestry, Northeast Forestry University, Harbin 150040, ChinaState Key Laboratory of Frozen Soils Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaState Key Laboratory of Frozen Soils Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China<p>Under a pronounced climate warming, permafrost has been degrading in most areas globally, but it is still unclear in the northwestern part of the Da Xing'anling Mountains, Northeast China. According to a 10-year observation of permafrost and active-layer temperatures, the multi-year average of mean annual ground temperatures at 20 m was <span class="inline-formula">−</span>2.83, <span class="inline-formula">−</span>0.94, <span class="inline-formula">−</span>0.80, <span class="inline-formula">−</span>0.70, <span class="inline-formula">−</span>0.60, and <span class="inline-formula">−</span>0.49 <span class="inline-formula"><sup>∘</sup></span>C, respectively, at boreholes Gen'he4 (GH4), Mangui3 (MG3), Mangui1 (MG1), Mangui2 (MG2), Gen'he5 (GH5), and Yituli'he2 (YTLH2), with the depths of the permafrost table varying from 1.1 to 7.0 m. Ground cooling at shallow depths has been detected, resulting in declining thaw depths in Yituli'he during 2009–2020, possibly due to relatively stable mean positive air temperature and declining snow cover and a dwindling local population. In most study areas (e.g., Mangui and Gen'he), permafrost warming is particularly pronounced at larger depths (even at 80 m). These results can provide important information for regional development and engineering design and maintenance and also provide a long-term ground temperature dataset for the validation of models relevant to the thermal dynamics of permafrost in the Da Xing'anling Mountains. All of the datasets are published through the National Tibetan Plateau Data Center (TPDC), and the link is <a href="https://doi.org/10.11888/Geocry.tpdc.271752">https://doi.org/10.11888/Geocry.tpdc.271752</a> (Chang, 2021).</p>https://essd.copernicus.org/articles/14/3947/2022/essd-14-3947-2022.pdf |
| spellingShingle | X. Chang X. Chang H. Jin H. Jin R. He Y. Zhang X. Li X. Jin G. Li Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decade Earth System Science Data |
| title | Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decade |
| title_full | Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decade |
| title_fullStr | Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decade |
| title_full_unstemmed | Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decade |
| title_short | Permafrost changes in the northwestern Da Xing'anling Mountains, Northeast China, in the past decade |
| title_sort | permafrost changes in the northwestern da xing anling mountains northeast china in the past decade |
| url | https://essd.copernicus.org/articles/14/3947/2022/essd-14-3947-2022.pdf |
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