Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai‒Tibet Plateau
Studies on the responses of soil organic carbon (SOC) and nitrogen dynamics to Holocene climate and environment in permafrost peatlands and/or wetlands might serve as analogues for future scenarios, and they can help predict the fate of the frozen SOC and nitrogen under a warming climate. To date, l...
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KeAi Communications Co., Ltd.
2023
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ftdoajarticles:oai:doaj.org/article:3262363423cb4b3b80e68a0e8a13aeea 2023-06-18T03:42:37+02:00 Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai‒Tibet Plateau Qing-Feng Wang Hui-Jun Jin Cui-Cui Mu Xiao-Dong Wu Lin Zhao Qing-Bai Wu 2023-04-01T00:00:00Z https://doi.org/10.1016/j.accre.2023.04.001 https://doaj.org/article/3262363423cb4b3b80e68a0e8a13aeea EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S1674927823000424 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2023.04.001 https://doaj.org/article/3262363423cb4b3b80e68a0e8a13aeea Advances in Climate Change Research, Vol 14, Iss 2, Pp 213-225 (2023) Syngenetic permafrost in alpine wetland Soil organic carbon pool Nitrogen accumulation Chemical weathering Dust deposition Holocene Meteorology. Climatology QC851-999 Social sciences (General) H1-99 article 2023 ftdoajarticles https://doi.org/10.1016/j.accre.2023.04.001 2023-06-04T00:37:51Z Studies on the responses of soil organic carbon (SOC) and nitrogen dynamics to Holocene climate and environment in permafrost peatlands and/or wetlands might serve as analogues for future scenarios, and they can help predict the fate of the frozen SOC and nitrogen under a warming climate. To date, little is known about these issues on the Qinghai‒Tibet Plateau (QTP). Here, we investigated the accumulations of SOC and nitrogen in a permafrost wetland on the northeastern QTP, and analyzed their links with Holocene climatic and environmental changes. In order to do so, we studied grain size, soil organic matter, SOC, and nitrogen contents, bulk density, geochemical parameters, and the accelerator mass spectrometry (AMS) 14C dating of the 216-cm-deep wetland profile. SOC and nitrogen contents revealed a general uptrend over last 7300 years. SOC stocks for depths of 0–100 and 0–200 cm were 50.1 and 79.0 kgC m−2, respectively, and nitrogen stocks for the same depths were 4.3 and 6.6 kgN m−2, respectively. Overall, a cooling and drying trend for regional climate over last 7300 years was inferred from the declining chemical weathering and humidity index. Meanwhile, SOC and nitrogen accumulated rapidly in 1110–720 BP, while apparent accumulation rates of SOC and nitrogen were much lower during the other periods of the last 7300 years. Consequently, we proposed a probable conceptual framework for the concordant development of syngenetic permafrost and SOC and nitrogen accumulations in alpine permafrost wetlands. This indicates that, apart from controls of climate, non-climate environmental factors, such as dust deposition and site hydrology, matter to SOC and nitrogen accumulations in permafrost wetlands. We emphasized that environmental changes driven by climate change have important impacts on SOC and nitrogen accumulations in alpine permafrost wetlands. This study could provide data support for regional and global estimates of SOC and nitrogen pools and for global models on carbon‒climate interactions that take into ... Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Advances in Climate Change Research 14 2 213 225 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Syngenetic permafrost in alpine wetland Soil organic carbon pool Nitrogen accumulation Chemical weathering Dust deposition Holocene Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
spellingShingle |
Syngenetic permafrost in alpine wetland Soil organic carbon pool Nitrogen accumulation Chemical weathering Dust deposition Holocene Meteorology. Climatology QC851-999 Social sciences (General) H1-99 Qing-Feng Wang Hui-Jun Jin Cui-Cui Mu Xiao-Dong Wu Lin Zhao Qing-Bai Wu Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai‒Tibet Plateau |
topic_facet |
Syngenetic permafrost in alpine wetland Soil organic carbon pool Nitrogen accumulation Chemical weathering Dust deposition Holocene Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
description |
Studies on the responses of soil organic carbon (SOC) and nitrogen dynamics to Holocene climate and environment in permafrost peatlands and/or wetlands might serve as analogues for future scenarios, and they can help predict the fate of the frozen SOC and nitrogen under a warming climate. To date, little is known about these issues on the Qinghai‒Tibet Plateau (QTP). Here, we investigated the accumulations of SOC and nitrogen in a permafrost wetland on the northeastern QTP, and analyzed their links with Holocene climatic and environmental changes. In order to do so, we studied grain size, soil organic matter, SOC, and nitrogen contents, bulk density, geochemical parameters, and the accelerator mass spectrometry (AMS) 14C dating of the 216-cm-deep wetland profile. SOC and nitrogen contents revealed a general uptrend over last 7300 years. SOC stocks for depths of 0–100 and 0–200 cm were 50.1 and 79.0 kgC m−2, respectively, and nitrogen stocks for the same depths were 4.3 and 6.6 kgN m−2, respectively. Overall, a cooling and drying trend for regional climate over last 7300 years was inferred from the declining chemical weathering and humidity index. Meanwhile, SOC and nitrogen accumulated rapidly in 1110–720 BP, while apparent accumulation rates of SOC and nitrogen were much lower during the other periods of the last 7300 years. Consequently, we proposed a probable conceptual framework for the concordant development of syngenetic permafrost and SOC and nitrogen accumulations in alpine permafrost wetlands. This indicates that, apart from controls of climate, non-climate environmental factors, such as dust deposition and site hydrology, matter to SOC and nitrogen accumulations in permafrost wetlands. We emphasized that environmental changes driven by climate change have important impacts on SOC and nitrogen accumulations in alpine permafrost wetlands. This study could provide data support for regional and global estimates of SOC and nitrogen pools and for global models on carbon‒climate interactions that take into ... |
format |
Article in Journal/Newspaper |
author |
Qing-Feng Wang Hui-Jun Jin Cui-Cui Mu Xiao-Dong Wu Lin Zhao Qing-Bai Wu |
author_facet |
Qing-Feng Wang Hui-Jun Jin Cui-Cui Mu Xiao-Dong Wu Lin Zhao Qing-Bai Wu |
author_sort |
Qing-Feng Wang |
title |
Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai‒Tibet Plateau |
title_short |
Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai‒Tibet Plateau |
title_full |
Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai‒Tibet Plateau |
title_fullStr |
Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai‒Tibet Plateau |
title_full_unstemmed |
Non-climate environmental factors matter to Holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, Qinghai‒Tibet Plateau |
title_sort |
non-climate environmental factors matter to holocene dynamics of soil organic carbon and nitrogen in an alpine permafrost wetland, qinghai‒tibet plateau |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2023 |
url |
https://doi.org/10.1016/j.accre.2023.04.001 https://doaj.org/article/3262363423cb4b3b80e68a0e8a13aeea |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Advances in Climate Change Research, Vol 14, Iss 2, Pp 213-225 (2023) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674927823000424 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2023.04.001 https://doaj.org/article/3262363423cb4b3b80e68a0e8a13aeea |
op_doi |
https://doi.org/10.1016/j.accre.2023.04.001 |
container_title |
Advances in Climate Change Research |
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14 |
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2 |
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213 |
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225 |
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1769008616499576832 |