Spatiotemporal Distribution Characteristics of Fire Scars Further Prove the Correlation between Permafrost Swamp Wildfires and Methane Geological Emissions
Affected by global warming, methane gas released by permafrost degradation may increase the frequency of wildfires, and there are few studies on wildfires in permafrost regions and their correlation with climate and regional methane emissions. The northwestern section of the Xiaoxing’an Mountains in...
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ftmdpi:oai:mdpi.com:/2071-1050/14/22/14947/ 2023-08-20T04:09:08+02:00 Spatiotemporal Distribution Characteristics of Fire Scars Further Prove the Correlation between Permafrost Swamp Wildfires and Methane Geological Emissions Wei Shan Lisha Qiu Ying Guo Chengcheng Zhang Zhichao Xu Shuai Liu agris 2022-11-11 application/pdf https://doi.org/10.3390/su142214947 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/su142214947 https://creativecommons.org/licenses/by/4.0/ Sustainability; Volume 14; Issue 22; Pages: 14947 permafrost degradation wildfire methane emissions climate change correlation analysis Text 2022 ftmdpi https://doi.org/10.3390/su142214947 2023-08-01T07:18:23Z Affected by global warming, methane gas released by permafrost degradation may increase the frequency of wildfires, and there are few studies on wildfires in permafrost regions and their correlation with climate and regional methane emissions. The northwestern section of the Xiaoxing’an Mountains in China was selected as the study area, and the spatial relationship between permafrost and spring wildfires was studied based on Landsat TM and Sentinel-2 data. Combined with monitoring data of air temperature, humidity, and methane concentration, the impact of methane emissions on spring wildfires was analyzed. The study shows that the spatial distribution of fire scars in spring is highly consistent with permafrost, and the change trend of fire scars is in line with the law of permafrost degradation. Wildfires occur intensively during the snow melting period in spring, and the temporal variation pattern is basically consistent with the methane concentration. The number of fire points was positively correlated with air temperature and methane concentration in March and April, and spring wildfires in permafrost regions are the result of a combination of rising seasonal temperatures, surface snow melting, and concentrated methane emissions. Larger areas of discontinuous permafrost are more prone to recurring wildfires. Text permafrost MDPI Open Access Publishing Sustainability 14 22 14947 |
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permafrost degradation wildfire methane emissions climate change correlation analysis |
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permafrost degradation wildfire methane emissions climate change correlation analysis Wei Shan Lisha Qiu Ying Guo Chengcheng Zhang Zhichao Xu Shuai Liu Spatiotemporal Distribution Characteristics of Fire Scars Further Prove the Correlation between Permafrost Swamp Wildfires and Methane Geological Emissions |
topic_facet |
permafrost degradation wildfire methane emissions climate change correlation analysis |
description |
Affected by global warming, methane gas released by permafrost degradation may increase the frequency of wildfires, and there are few studies on wildfires in permafrost regions and their correlation with climate and regional methane emissions. The northwestern section of the Xiaoxing’an Mountains in China was selected as the study area, and the spatial relationship between permafrost and spring wildfires was studied based on Landsat TM and Sentinel-2 data. Combined with monitoring data of air temperature, humidity, and methane concentration, the impact of methane emissions on spring wildfires was analyzed. The study shows that the spatial distribution of fire scars in spring is highly consistent with permafrost, and the change trend of fire scars is in line with the law of permafrost degradation. Wildfires occur intensively during the snow melting period in spring, and the temporal variation pattern is basically consistent with the methane concentration. The number of fire points was positively correlated with air temperature and methane concentration in March and April, and spring wildfires in permafrost regions are the result of a combination of rising seasonal temperatures, surface snow melting, and concentrated methane emissions. Larger areas of discontinuous permafrost are more prone to recurring wildfires. |
format |
Text |
author |
Wei Shan Lisha Qiu Ying Guo Chengcheng Zhang Zhichao Xu Shuai Liu |
author_facet |
Wei Shan Lisha Qiu Ying Guo Chengcheng Zhang Zhichao Xu Shuai Liu |
author_sort |
Wei Shan |
title |
Spatiotemporal Distribution Characteristics of Fire Scars Further Prove the Correlation between Permafrost Swamp Wildfires and Methane Geological Emissions |
title_short |
Spatiotemporal Distribution Characteristics of Fire Scars Further Prove the Correlation between Permafrost Swamp Wildfires and Methane Geological Emissions |
title_full |
Spatiotemporal Distribution Characteristics of Fire Scars Further Prove the Correlation between Permafrost Swamp Wildfires and Methane Geological Emissions |
title_fullStr |
Spatiotemporal Distribution Characteristics of Fire Scars Further Prove the Correlation between Permafrost Swamp Wildfires and Methane Geological Emissions |
title_full_unstemmed |
Spatiotemporal Distribution Characteristics of Fire Scars Further Prove the Correlation between Permafrost Swamp Wildfires and Methane Geological Emissions |
title_sort |
spatiotemporal distribution characteristics of fire scars further prove the correlation between permafrost swamp wildfires and methane geological emissions |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/su142214947 |
op_coverage |
agris |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Sustainability; Volume 14; Issue 22; Pages: 14947 |
op_relation |
https://dx.doi.org/10.3390/su142214947 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/su142214947 |
container_title |
Sustainability |
container_volume |
14 |
container_issue |
22 |
container_start_page |
14947 |
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