Spatio-Temporal Variations of Soil Active Layer Thickness in Chinese Boreal Forests from 2000 to 2015
The soil active layer in boreal forests is sensitive to climate warming. Climate-induced changes in the active layer may greatly affect the global carbon budget and planetary climatic system by releasing large quantities of greenhouse gases that currently are stored in permafrost. Ground surface tem...
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ftdoajarticles:oai:doaj.org/article:07aeb0c996a647289b2bcb7332a4dad4 2023-05-15T13:03:05+02:00 Spatio-Temporal Variations of Soil Active Layer Thickness in Chinese Boreal Forests from 2000 to 2015 Xiongxiong Bai Jian Yang Bo Tao Wei Ren 2018-08-01T00:00:00Z https://doi.org/10.3390/rs10081225 https://doaj.org/article/07aeb0c996a647289b2bcb7332a4dad4 EN eng MDPI AG http://www.mdpi.com/2072-4292/10/8/1225 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs10081225 https://doaj.org/article/07aeb0c996a647289b2bcb7332a4dad4 Remote Sensing, Vol 10, Iss 8, p 1225 (2018) active layer thickness boreal forests remote sensing MODIS Science Q article 2018 ftdoajarticles https://doi.org/10.3390/rs10081225 2022-12-30T20:32:27Z The soil active layer in boreal forests is sensitive to climate warming. Climate-induced changes in the active layer may greatly affect the global carbon budget and planetary climatic system by releasing large quantities of greenhouse gases that currently are stored in permafrost. Ground surface temperature is an immediate driver of active layer thickness (ALT) dynamics. In this study, we mapped ALT distribution in Chinese boreal larch forests from 2000 to 2015 by integrating remote sensing data with the Stefan equation. We then examined the changes of the ALT in response to changes in ground surface temperature and identified drivers of the spatio-temporal patterns of ALT. Active layer thickness varied from 1.18 to 1.3 m in the study area. Areas of nonforested land and low elevation or with increased air temperature had a relatively high ALT, whereas ALT was lower at relatively high elevation and with decreased air temperatures. Interannual variations of ALT had no obvious trend, however, and the ALT changed at a rate of only −0.01 and 0.01 m year−1. In a mega-fire patch of 79,000 ha burned in 2003, ΔALT (ALTi − ALT2002, where 2003 ≤ i ≤ 2015) was significantly higher than in the unburned area, with the influence of the wildfire persisting 10 years. Under the high emission scenario (RCP8.5), an increase of 2.6–4.8 °C in mean air temperature would increase ALT into 1.46–1.55 m by 2100, which in turn would produce a significant positive feedback to climate warming. Article in Journal/Newspaper Active layer thickness permafrost Directory of Open Access Journals: DOAJ Articles Remote Sensing 10 8 1225 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
active layer thickness boreal forests remote sensing MODIS Science Q |
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active layer thickness boreal forests remote sensing MODIS Science Q Xiongxiong Bai Jian Yang Bo Tao Wei Ren Spatio-Temporal Variations of Soil Active Layer Thickness in Chinese Boreal Forests from 2000 to 2015 |
topic_facet |
active layer thickness boreal forests remote sensing MODIS Science Q |
description |
The soil active layer in boreal forests is sensitive to climate warming. Climate-induced changes in the active layer may greatly affect the global carbon budget and planetary climatic system by releasing large quantities of greenhouse gases that currently are stored in permafrost. Ground surface temperature is an immediate driver of active layer thickness (ALT) dynamics. In this study, we mapped ALT distribution in Chinese boreal larch forests from 2000 to 2015 by integrating remote sensing data with the Stefan equation. We then examined the changes of the ALT in response to changes in ground surface temperature and identified drivers of the spatio-temporal patterns of ALT. Active layer thickness varied from 1.18 to 1.3 m in the study area. Areas of nonforested land and low elevation or with increased air temperature had a relatively high ALT, whereas ALT was lower at relatively high elevation and with decreased air temperatures. Interannual variations of ALT had no obvious trend, however, and the ALT changed at a rate of only −0.01 and 0.01 m year−1. In a mega-fire patch of 79,000 ha burned in 2003, ΔALT (ALTi − ALT2002, where 2003 ≤ i ≤ 2015) was significantly higher than in the unburned area, with the influence of the wildfire persisting 10 years. Under the high emission scenario (RCP8.5), an increase of 2.6–4.8 °C in mean air temperature would increase ALT into 1.46–1.55 m by 2100, which in turn would produce a significant positive feedback to climate warming. |
format |
Article in Journal/Newspaper |
author |
Xiongxiong Bai Jian Yang Bo Tao Wei Ren |
author_facet |
Xiongxiong Bai Jian Yang Bo Tao Wei Ren |
author_sort |
Xiongxiong Bai |
title |
Spatio-Temporal Variations of Soil Active Layer Thickness in Chinese Boreal Forests from 2000 to 2015 |
title_short |
Spatio-Temporal Variations of Soil Active Layer Thickness in Chinese Boreal Forests from 2000 to 2015 |
title_full |
Spatio-Temporal Variations of Soil Active Layer Thickness in Chinese Boreal Forests from 2000 to 2015 |
title_fullStr |
Spatio-Temporal Variations of Soil Active Layer Thickness in Chinese Boreal Forests from 2000 to 2015 |
title_full_unstemmed |
Spatio-Temporal Variations of Soil Active Layer Thickness in Chinese Boreal Forests from 2000 to 2015 |
title_sort |
spatio-temporal variations of soil active layer thickness in chinese boreal forests from 2000 to 2015 |
publisher |
MDPI AG |
publishDate |
2018 |
url |
https://doi.org/10.3390/rs10081225 https://doaj.org/article/07aeb0c996a647289b2bcb7332a4dad4 |
genre |
Active layer thickness permafrost |
genre_facet |
Active layer thickness permafrost |
op_source |
Remote Sensing, Vol 10, Iss 8, p 1225 (2018) |
op_relation |
http://www.mdpi.com/2072-4292/10/8/1225 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs10081225 https://doaj.org/article/07aeb0c996a647289b2bcb7332a4dad4 |
op_doi |
https://doi.org/10.3390/rs10081225 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
8 |
container_start_page |
1225 |
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1766327930834649088 |