The Effect of Post-Fire Disturbances on a Seasonally Thawed Layer in the Permafrost Larch Forests of Central Siberia
We examined and simulated the consequences of the degradation of the litter and the moss–lichen layer after fire impact, which could affect the seasonal temperature of the soil and the depth of the seasonally thawed layer (STL) in the permafrost zone. According to the analysis of satellite imagery f...
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ftdoajarticles:oai:doaj.org/article:7fa041c890834ca486ec722acdd27f0c 2023-05-15T17:57:21+02:00 The Effect of Post-Fire Disturbances on a Seasonally Thawed Layer in the Permafrost Larch Forests of Central Siberia Evgenii Ponomarev Oxana Masyagina Kirill Litvintsev Tatiana Ponomareva Evgeny Shvetsov Konstantin Finnikov 2020-07-01T00:00:00Z https://doi.org/10.3390/f11080790 https://doaj.org/article/7fa041c890834ca486ec722acdd27f0c EN eng MDPI AG https://www.mdpi.com/1999-4907/11/8/790 https://doaj.org/toc/1999-4907 doi:10.3390/f11080790 1999-4907 https://doaj.org/article/7fa041c890834ca486ec722acdd27f0c Forests, Vol 11, Iss 790, p 790 (2020) wildfires disturbance permafrost thermal anomaly seasonally thawed layer soil Plant ecology QK900-989 article 2020 ftdoajarticles https://doi.org/10.3390/f11080790 2022-12-31T01:49:47Z We examined and simulated the consequences of the degradation of the litter and the moss–lichen layer after fire impact, which could affect the seasonal temperature of the soil and the depth of the seasonally thawed layer (STL) in the permafrost zone. According to the analysis of satellite imagery for 2000 to 2019, the fire-disturbed area in the region of interest amounted to 20%. The main aims of the study included quantitative evaluation of the variation range of summer temperature anomalies at fire-damaged plots, summarizing the statistical norm of the STL depending on natural conditions, and numerical simulation of the response of the STL. Using Terra and Aqua/MODIS imagery, we analyzed surface temperature (in bands of λ = 10.780–11.280 and 11.770–12.270 μm) coupled with the normalized difference vegetation index (NDVI) for non-disturbed and fire-damaged sites under the same natural conditions of larch forests in Central Siberia. Heat transfer, freezing and thawing processes were numerically simulated for two extreme cases of soil conditions: dry soil and water-saturated soil. The model was also applied to soil with non-homogeneous water content. As input parameters, we used data on the properties of cryogenic soils collected in larch forests ( Larix gmelinii ) in the flat-mountainous taiga region of the Evenkia (Central Siberia). For post-fire plots, surface temperature anomalies observed during summer months remained significant for more than 15–20 years after fire impact, while the NDVI values were restored to the statistical norm within 7–10 years of the fire. According to the results of numerical simulation, the thickness of the STL could show a 30–50% increase compared to the statistical norm. In the first approximation, we showed the annual soil temperature dynamics at various depths in disturbed and non-disturbed plots. Article in Journal/Newspaper permafrost taiga Siberia Directory of Open Access Journals: DOAJ Articles Forests 11 8 790 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
wildfires disturbance permafrost thermal anomaly seasonally thawed layer soil Plant ecology QK900-989 |
spellingShingle |
wildfires disturbance permafrost thermal anomaly seasonally thawed layer soil Plant ecology QK900-989 Evgenii Ponomarev Oxana Masyagina Kirill Litvintsev Tatiana Ponomareva Evgeny Shvetsov Konstantin Finnikov The Effect of Post-Fire Disturbances on a Seasonally Thawed Layer in the Permafrost Larch Forests of Central Siberia |
topic_facet |
wildfires disturbance permafrost thermal anomaly seasonally thawed layer soil Plant ecology QK900-989 |
description |
We examined and simulated the consequences of the degradation of the litter and the moss–lichen layer after fire impact, which could affect the seasonal temperature of the soil and the depth of the seasonally thawed layer (STL) in the permafrost zone. According to the analysis of satellite imagery for 2000 to 2019, the fire-disturbed area in the region of interest amounted to 20%. The main aims of the study included quantitative evaluation of the variation range of summer temperature anomalies at fire-damaged plots, summarizing the statistical norm of the STL depending on natural conditions, and numerical simulation of the response of the STL. Using Terra and Aqua/MODIS imagery, we analyzed surface temperature (in bands of λ = 10.780–11.280 and 11.770–12.270 μm) coupled with the normalized difference vegetation index (NDVI) for non-disturbed and fire-damaged sites under the same natural conditions of larch forests in Central Siberia. Heat transfer, freezing and thawing processes were numerically simulated for two extreme cases of soil conditions: dry soil and water-saturated soil. The model was also applied to soil with non-homogeneous water content. As input parameters, we used data on the properties of cryogenic soils collected in larch forests ( Larix gmelinii ) in the flat-mountainous taiga region of the Evenkia (Central Siberia). For post-fire plots, surface temperature anomalies observed during summer months remained significant for more than 15–20 years after fire impact, while the NDVI values were restored to the statistical norm within 7–10 years of the fire. According to the results of numerical simulation, the thickness of the STL could show a 30–50% increase compared to the statistical norm. In the first approximation, we showed the annual soil temperature dynamics at various depths in disturbed and non-disturbed plots. |
format |
Article in Journal/Newspaper |
author |
Evgenii Ponomarev Oxana Masyagina Kirill Litvintsev Tatiana Ponomareva Evgeny Shvetsov Konstantin Finnikov |
author_facet |
Evgenii Ponomarev Oxana Masyagina Kirill Litvintsev Tatiana Ponomareva Evgeny Shvetsov Konstantin Finnikov |
author_sort |
Evgenii Ponomarev |
title |
The Effect of Post-Fire Disturbances on a Seasonally Thawed Layer in the Permafrost Larch Forests of Central Siberia |
title_short |
The Effect of Post-Fire Disturbances on a Seasonally Thawed Layer in the Permafrost Larch Forests of Central Siberia |
title_full |
The Effect of Post-Fire Disturbances on a Seasonally Thawed Layer in the Permafrost Larch Forests of Central Siberia |
title_fullStr |
The Effect of Post-Fire Disturbances on a Seasonally Thawed Layer in the Permafrost Larch Forests of Central Siberia |
title_full_unstemmed |
The Effect of Post-Fire Disturbances on a Seasonally Thawed Layer in the Permafrost Larch Forests of Central Siberia |
title_sort |
effect of post-fire disturbances on a seasonally thawed layer in the permafrost larch forests of central siberia |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/f11080790 https://doaj.org/article/7fa041c890834ca486ec722acdd27f0c |
genre |
permafrost taiga Siberia |
genre_facet |
permafrost taiga Siberia |
op_source |
Forests, Vol 11, Iss 790, p 790 (2020) |
op_relation |
https://www.mdpi.com/1999-4907/11/8/790 https://doaj.org/toc/1999-4907 doi:10.3390/f11080790 1999-4907 https://doaj.org/article/7fa041c890834ca486ec722acdd27f0c |
op_doi |
https://doi.org/10.3390/f11080790 |
container_title |
Forests |
container_volume |
11 |
container_issue |
8 |
container_start_page |
790 |
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1766165751868162048 |