Changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming.
Permafrost regions contain approximately half of the carbon stored in land ecosystems and have warmed at least twice as much as any other biome. This warming has influenced vegetation activity, leading to changes in plant composition, physiology, and biomass storage in aboveground and belowground co...
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Online Access: | https://doi.org/10.1073/pnas.2314036121 https://pubmed.ncbi.nlm.nih.gov/38857391 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11194490/ |
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ftpubmed:38857391 2024-09-09T20:03:03+00:00 Changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming. Yun, Hanbo Ciais, Philippe Zhu, Qing Chen, Deliang Zohner, Constantin M Tang, Jing Qu, Yang Zhou, Hao Schimel, Joshua Zhu, Peng Shao, Ming Christensen, Jens Hesselbjerg Wu, Qingbai Chen, Anping Elberling, Bo 2024 Jun 18 https://doi.org/10.1073/pnas.2314036121 https://pubmed.ncbi.nlm.nih.gov/38857391 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11194490/ eng eng Atypon https://doi.org/10.1073/pnas.2314036121 https://pubmed.ncbi.nlm.nih.gov/38857391 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11194490/ Proc Natl Acad Sci U S A ISSN:1091-6490 Volume:121 Issue:25 biomass allocation carbon trajectory climate warming permafrost vegetation adaptations Journal Article 2024 ftpubmed https://doi.org/10.1073/pnas.2314036121 2024-06-26T16:02:00Z Permafrost regions contain approximately half of the carbon stored in land ecosystems and have warmed at least twice as much as any other biome. This warming has influenced vegetation activity, leading to changes in plant composition, physiology, and biomass storage in aboveground and belowground components, ultimately impacting ecosystem carbon balance. Yet, little is known about the causes and magnitude of long-term changes in the above- to belowground biomass ratio of plants (η). Here, we analyzed η values using 3,013 plots and 26,337 species-specific measurements across eight sites on the Tibetan Plateau from 1995 to 2021. Our analysis revealed distinct temporal trends in η for three vegetation types: a 17% increase in alpine wetlands, and a decrease of 26% and 48% in alpine meadows and alpine steppes, respectively. These trends were primarily driven by temperature-induced growth preferences rather than shifts in plant species composition. Our findings indicate that in wetter ecosystems, climate warming promotes aboveground plant growth, while in drier ecosystems, such as alpine meadows and alpine steppes, plants allocate more biomass belowground. Furthermore, we observed a threefold strengthening of the warming effect on η over the past 27 y. Soil moisture was found to modulate the sensitivity of η to soil temperature in alpine meadows and alpine steppes, but not in alpine wetlands. Our results contribute to a better understanding of the processes driving the response of biomass distribution to climate warming, which is crucial for predicting the future carbon trajectory of permafrost ecosystems and climate feedback. Article in Journal/Newspaper permafrost PubMed Central (PMC) Proceedings of the National Academy of Sciences 121 25 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
biomass allocation carbon trajectory climate warming permafrost vegetation adaptations |
spellingShingle |
biomass allocation carbon trajectory climate warming permafrost vegetation adaptations Yun, Hanbo Ciais, Philippe Zhu, Qing Chen, Deliang Zohner, Constantin M Tang, Jing Qu, Yang Zhou, Hao Schimel, Joshua Zhu, Peng Shao, Ming Christensen, Jens Hesselbjerg Wu, Qingbai Chen, Anping Elberling, Bo Changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming. |
topic_facet |
biomass allocation carbon trajectory climate warming permafrost vegetation adaptations |
description |
Permafrost regions contain approximately half of the carbon stored in land ecosystems and have warmed at least twice as much as any other biome. This warming has influenced vegetation activity, leading to changes in plant composition, physiology, and biomass storage in aboveground and belowground components, ultimately impacting ecosystem carbon balance. Yet, little is known about the causes and magnitude of long-term changes in the above- to belowground biomass ratio of plants (η). Here, we analyzed η values using 3,013 plots and 26,337 species-specific measurements across eight sites on the Tibetan Plateau from 1995 to 2021. Our analysis revealed distinct temporal trends in η for three vegetation types: a 17% increase in alpine wetlands, and a decrease of 26% and 48% in alpine meadows and alpine steppes, respectively. These trends were primarily driven by temperature-induced growth preferences rather than shifts in plant species composition. Our findings indicate that in wetter ecosystems, climate warming promotes aboveground plant growth, while in drier ecosystems, such as alpine meadows and alpine steppes, plants allocate more biomass belowground. Furthermore, we observed a threefold strengthening of the warming effect on η over the past 27 y. Soil moisture was found to modulate the sensitivity of η to soil temperature in alpine meadows and alpine steppes, but not in alpine wetlands. Our results contribute to a better understanding of the processes driving the response of biomass distribution to climate warming, which is crucial for predicting the future carbon trajectory of permafrost ecosystems and climate feedback. |
format |
Article in Journal/Newspaper |
author |
Yun, Hanbo Ciais, Philippe Zhu, Qing Chen, Deliang Zohner, Constantin M Tang, Jing Qu, Yang Zhou, Hao Schimel, Joshua Zhu, Peng Shao, Ming Christensen, Jens Hesselbjerg Wu, Qingbai Chen, Anping Elberling, Bo |
author_facet |
Yun, Hanbo Ciais, Philippe Zhu, Qing Chen, Deliang Zohner, Constantin M Tang, Jing Qu, Yang Zhou, Hao Schimel, Joshua Zhu, Peng Shao, Ming Christensen, Jens Hesselbjerg Wu, Qingbai Chen, Anping Elberling, Bo |
author_sort |
Yun, Hanbo |
title |
Changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming. |
title_short |
Changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming. |
title_full |
Changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming. |
title_fullStr |
Changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming. |
title_full_unstemmed |
Changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming. |
title_sort |
changes in above- versus belowground biomass distribution in permafrost regions in response to climate warming. |
publisher |
Atypon |
publishDate |
2024 |
url |
https://doi.org/10.1073/pnas.2314036121 https://pubmed.ncbi.nlm.nih.gov/38857391 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11194490/ |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Proc Natl Acad Sci U S A ISSN:1091-6490 Volume:121 Issue:25 |
op_relation |
https://doi.org/10.1073/pnas.2314036121 https://pubmed.ncbi.nlm.nih.gov/38857391 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11194490/ |
op_doi |
https://doi.org/10.1073/pnas.2314036121 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
121 |
container_issue |
25 |
_version_ |
1809934987179327488 |