Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations
The relationship between soil organic matter and soil temperature plays an important role in our understanding of the effect of climate change on the hydrological and carbon cycles in permafrost regions. Several studies have documented that the organic horizon thickness has profound buffering effect...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/9971 2023-05-15T13:02:50+02:00 Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations Wang, Genxu Mao, Tianxu Chang, Juan Du, Jizeng 2014 http://ir.imde.ac.cn/handle/131551/9971 https://doi.org/10.1016/j.geoderma.2014.05.016 英语 eng GEODERMA Wang, Genxu,Mao, Tianxu,Chang, Juan,et al. Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations[J]. GEODERMA,2014,232:414-425. http://ir.imde.ac.cn/handle/131551/9971 doi:10.1016/j.geoderma.2014.05.016 Soil Organic Content Soil Temperature Dynamics Impact Alpine Meadow Permafrost Science & Technology Life Sciences & Biomedicine Agriculture QINGHAI-TIBET PLATEAU INTERIOR ALASKA VEGETATION COVER CLIMATE-CHANGE ACTIVE LAYER TEMPERATURE MODEL MATTER CARBON VARIABILITY Soil Science Article 期刊论文 2014 ftchinacadscimhe https://doi.org/10.1016/j.geoderma.2014.05.016 2022-12-19T18:19:10Z The relationship between soil organic matter and soil temperature plays an important role in our understanding of the effect of climate change on the hydrological and carbon cycles in permafrost regions. Several studies have documented that the organic horizon thickness has profound buffering effects on soil temperature for both tundra and boreal forest ecosystems. In the present study, the alpine meadow ecosystem in the middle and low-latitude permafrost region of the Qinghai-Tibet Plateau (QTP) was selected to examine the impacts of surface soil organic matter on the thermal properties of deep soil. Based on the data obtained from more than 23 observation sites, the relationship between soil organic content and soil temperature dynamics in different seasons was determined. The findings indicate a strong positive exponential (in thawing period) and linear (in freezing period) relationship between surface soil organic content (SOC) and soil temperature dynamics in deep soil layers. The higher SOC at the surface soil layer is associated with a lower rate of soil temperature variation and a later onset time for the thaw-freeze transformation. In permafrost regions of the QTP, the greater lapse rate of soil temperature per 100 m of increased elevation resulted in more significant modification of the SOC and soil thermal relationship in alpine meadows than that in tundra and boreal ecosystems. The coupled soil organic matter, soil thermal and water relationships play an important role in the resilience of permafrost during climate changes. (C) 2014 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Active layer temperature permafrost Tundra Alaska IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Geoderma 232-234 414 425 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Soil Organic Content Soil Temperature Dynamics Impact Alpine Meadow Permafrost Science & Technology Life Sciences & Biomedicine Agriculture QINGHAI-TIBET PLATEAU INTERIOR ALASKA VEGETATION COVER CLIMATE-CHANGE ACTIVE LAYER TEMPERATURE MODEL MATTER CARBON VARIABILITY Soil Science |
spellingShingle |
Soil Organic Content Soil Temperature Dynamics Impact Alpine Meadow Permafrost Science & Technology Life Sciences & Biomedicine Agriculture QINGHAI-TIBET PLATEAU INTERIOR ALASKA VEGETATION COVER CLIMATE-CHANGE ACTIVE LAYER TEMPERATURE MODEL MATTER CARBON VARIABILITY Soil Science Wang, Genxu Mao, Tianxu Chang, Juan Du, Jizeng Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations |
topic_facet |
Soil Organic Content Soil Temperature Dynamics Impact Alpine Meadow Permafrost Science & Technology Life Sciences & Biomedicine Agriculture QINGHAI-TIBET PLATEAU INTERIOR ALASKA VEGETATION COVER CLIMATE-CHANGE ACTIVE LAYER TEMPERATURE MODEL MATTER CARBON VARIABILITY Soil Science |
description |
The relationship between soil organic matter and soil temperature plays an important role in our understanding of the effect of climate change on the hydrological and carbon cycles in permafrost regions. Several studies have documented that the organic horizon thickness has profound buffering effects on soil temperature for both tundra and boreal forest ecosystems. In the present study, the alpine meadow ecosystem in the middle and low-latitude permafrost region of the Qinghai-Tibet Plateau (QTP) was selected to examine the impacts of surface soil organic matter on the thermal properties of deep soil. Based on the data obtained from more than 23 observation sites, the relationship between soil organic content and soil temperature dynamics in different seasons was determined. The findings indicate a strong positive exponential (in thawing period) and linear (in freezing period) relationship between surface soil organic content (SOC) and soil temperature dynamics in deep soil layers. The higher SOC at the surface soil layer is associated with a lower rate of soil temperature variation and a later onset time for the thaw-freeze transformation. In permafrost regions of the QTP, the greater lapse rate of soil temperature per 100 m of increased elevation resulted in more significant modification of the SOC and soil thermal relationship in alpine meadows than that in tundra and boreal ecosystems. The coupled soil organic matter, soil thermal and water relationships play an important role in the resilience of permafrost during climate changes. (C) 2014 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Wang, Genxu Mao, Tianxu Chang, Juan Du, Jizeng |
author_facet |
Wang, Genxu Mao, Tianxu Chang, Juan Du, Jizeng |
author_sort |
Wang, Genxu |
title |
Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations |
title_short |
Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations |
title_full |
Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations |
title_fullStr |
Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations |
title_full_unstemmed |
Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations |
title_sort |
impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations |
publishDate |
2014 |
url |
http://ir.imde.ac.cn/handle/131551/9971 https://doi.org/10.1016/j.geoderma.2014.05.016 |
genre |
Active layer temperature permafrost Tundra Alaska |
genre_facet |
Active layer temperature permafrost Tundra Alaska |
op_relation |
GEODERMA Wang, Genxu,Mao, Tianxu,Chang, Juan,et al. Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations[J]. GEODERMA,2014,232:414-425. http://ir.imde.ac.cn/handle/131551/9971 doi:10.1016/j.geoderma.2014.05.016 |
op_doi |
https://doi.org/10.1016/j.geoderma.2014.05.016 |
container_title |
Geoderma |
container_volume |
232-234 |
container_start_page |
414 |
op_container_end_page |
425 |
_version_ |
1766322216861958144 |