Swamp Wetlands in Degraded Permafrost Areas Release Large Amounts of Methane and May Promote Wildfires through Friction Electrification
Affected by global warming, permafrost degradation releases a large amount of methane gas, and this part of flammable methane may increase the frequency of wildfires. To study the influence mechanism of methane emission on wildfires in degraded permafrost regions, we selected the northwest section o...
Published in: | Sustainability |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2022
|
Subjects: | |
Online Access: | https://doi.org/10.3390/su14159193 |
id |
ftmdpi:oai:mdpi.com:/2071-1050/14/15/9193/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2071-1050/14/15/9193/ 2023-08-20T04:09:09+02:00 Swamp Wetlands in Degraded Permafrost Areas Release Large Amounts of Methane and May Promote Wildfires through Friction Electrification Zhichao Xu Wei Shan Ying Guo Chengcheng Zhang Lisha Qiu agris 2022-07-27 application/pdf https://doi.org/10.3390/su14159193 EN eng Multidisciplinary Digital Publishing Institute Hazards and Sustainability https://dx.doi.org/10.3390/su14159193 https://creativecommons.org/licenses/by/4.0/ Sustainability; Volume 14; Issue 15; Pages: 9193 China Heilongjiang province Xiao Xing’an Mountains permafrost methane emissions static electricity atmospheric electrodischarge wildfire Text 2022 ftmdpi https://doi.org/10.3390/su14159193 2023-08-01T05:51:25Z Affected by global warming, permafrost degradation releases a large amount of methane gas, and this part of flammable methane may increase the frequency of wildfires. To study the influence mechanism of methane emission on wildfires in degraded permafrost regions, we selected the northwest section of Xiaoxing’an Mountains in China as the study area, and combined with remote sensing data, we conducted long-term monitoring of atmospheric electric field, temperature, methane concentration, and other observation parameters, and further carried out indoor gas–solid friction tests. The study shows that methane gas (the concentration of methane at the centralized leakage point is higher than 10,000 ppm) in the permafrost degradation area will release rapidly in spring, and friction with soil, surface plant residues, and water vapor will accelerate atmospheric convection and generate electrostatic and atmospheric electrodischarge phenomena on the surface. The electrostatic and atmospheric electrodischarge accumulated on the surface will further ignite the combustibles near the surface, such as methane gas and plant residues. Therefore, the gradual release of methane gas into the air promotes the feedback mechanism of lightning–wildfire–vegetation, and increases the risk of wildfire in degraded permafrost areas through frictional electrification (i.e., electrostatic and atmospheric electrodischarge). Text permafrost MDPI Open Access Publishing Sustainability 14 15 9193 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
China Heilongjiang province Xiao Xing’an Mountains permafrost methane emissions static electricity atmospheric electrodischarge wildfire |
spellingShingle |
China Heilongjiang province Xiao Xing’an Mountains permafrost methane emissions static electricity atmospheric electrodischarge wildfire Zhichao Xu Wei Shan Ying Guo Chengcheng Zhang Lisha Qiu Swamp Wetlands in Degraded Permafrost Areas Release Large Amounts of Methane and May Promote Wildfires through Friction Electrification |
topic_facet |
China Heilongjiang province Xiao Xing’an Mountains permafrost methane emissions static electricity atmospheric electrodischarge wildfire |
description |
Affected by global warming, permafrost degradation releases a large amount of methane gas, and this part of flammable methane may increase the frequency of wildfires. To study the influence mechanism of methane emission on wildfires in degraded permafrost regions, we selected the northwest section of Xiaoxing’an Mountains in China as the study area, and combined with remote sensing data, we conducted long-term monitoring of atmospheric electric field, temperature, methane concentration, and other observation parameters, and further carried out indoor gas–solid friction tests. The study shows that methane gas (the concentration of methane at the centralized leakage point is higher than 10,000 ppm) in the permafrost degradation area will release rapidly in spring, and friction with soil, surface plant residues, and water vapor will accelerate atmospheric convection and generate electrostatic and atmospheric electrodischarge phenomena on the surface. The electrostatic and atmospheric electrodischarge accumulated on the surface will further ignite the combustibles near the surface, such as methane gas and plant residues. Therefore, the gradual release of methane gas into the air promotes the feedback mechanism of lightning–wildfire–vegetation, and increases the risk of wildfire in degraded permafrost areas through frictional electrification (i.e., electrostatic and atmospheric electrodischarge). |
format |
Text |
author |
Zhichao Xu Wei Shan Ying Guo Chengcheng Zhang Lisha Qiu |
author_facet |
Zhichao Xu Wei Shan Ying Guo Chengcheng Zhang Lisha Qiu |
author_sort |
Zhichao Xu |
title |
Swamp Wetlands in Degraded Permafrost Areas Release Large Amounts of Methane and May Promote Wildfires through Friction Electrification |
title_short |
Swamp Wetlands in Degraded Permafrost Areas Release Large Amounts of Methane and May Promote Wildfires through Friction Electrification |
title_full |
Swamp Wetlands in Degraded Permafrost Areas Release Large Amounts of Methane and May Promote Wildfires through Friction Electrification |
title_fullStr |
Swamp Wetlands in Degraded Permafrost Areas Release Large Amounts of Methane and May Promote Wildfires through Friction Electrification |
title_full_unstemmed |
Swamp Wetlands in Degraded Permafrost Areas Release Large Amounts of Methane and May Promote Wildfires through Friction Electrification |
title_sort |
swamp wetlands in degraded permafrost areas release large amounts of methane and may promote wildfires through friction electrification |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/su14159193 |
op_coverage |
agris |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Sustainability; Volume 14; Issue 15; Pages: 9193 |
op_relation |
Hazards and Sustainability https://dx.doi.org/10.3390/su14159193 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/su14159193 |
container_title |
Sustainability |
container_volume |
14 |
container_issue |
15 |
container_start_page |
9193 |
_version_ |
1774721894707101696 |