Decadal soil carbon accumulation across Tibetan permafrost regions
Permafrost soils store large amounts of carbon. Warming can result in carbon release from thawing permafrost, but it can also lead to enhanced primary production, which can increase soil carbon stocks. The balance of these fluxes determines the nature of the permafrost feedback to warming. Here we a...
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Online Access: | http://210.75.249.4/handle/363003/7077 https://doi.org/10.1038/NGEO2945 |
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ftchinacascnwipb:oai:210.75.249.4:363003/7077 2024-10-06T13:52:01+00:00 Decadal soil carbon accumulation across Tibetan permafrost regions Ding, Jinzhi Chen, Leiyi Ji, Chengjun Hugelius, Gustaf Li, Yingnian Liu, Li Qin, Shuqi Zhang, Beibei Yang, Guibiao Li, Fei Fang, Kai Chen, Yongliang Peng, Yunfeng Zhao, Xia He, Honglin Smith, Pete Fang, Jingyun Yang, Yuanhe 2017-06-01 http://210.75.249.4/handle/363003/7077 https://doi.org/10.1038/NGEO2945 英语 eng NATURE GEOSCIENCE http://210.75.249.4/handle/363003/7077 doi:10.1038/NGEO2945 Science & Technology Physical Sciences ORGANIC-CARBON TERRESTRIAL ECOSYSTEMS ALPINE GRASSLANDS CLIMATE-CHANGE CO2 PRODUCTION PLATEAU DYNAMICS MODELS MINERALIZATION UNCERTAINTY Geology Geosciences Multidisciplinary Article 期刊论文 2017 ftchinacascnwipb https://doi.org/10.1038/NGEO2945 2024-09-12T04:32:43Z Permafrost soils store large amounts of carbon. Warming can result in carbon release from thawing permafrost, but it can also lead to enhanced primary production, which can increase soil carbon stocks. The balance of these fluxes determines the nature of the permafrost feedback to warming. Here we assessed decadal changes in soil organic carbon stocks in the active layer-the uppermost 30 cm-of permafrost soils across Tibetan alpine regions, based on repeated soil carbon measurements in the early 2000s and 2010s at the same sites. We observed an overall accumulation of soil organic carbon irrespective of vegetation type, with a mean rate of 28.0 g Cm-2 yr(-1) across Tibetan permafrost regions. This soil organic carbon accrual occurred only in the subsurface soil, between depths of 10 and 30 cm, mainly induced by an increase of soil organic carbon concentrations. We conclude that the upper active layer of Tibetan alpine permafrost currently represents a substantial regional soil carbon sink in a warming climate, implying that carbon losses of deeper and older permafrost carbon might be offset by increases in upper-active-layer soil organic carbon stocks, which probably results from enhanced vegetation growth. Article in Journal/Newspaper permafrost Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) Nature Geoscience 10 6 420 424 |
institution |
Open Polar |
collection |
Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascnwipb |
language |
English |
topic |
Science & Technology Physical Sciences ORGANIC-CARBON TERRESTRIAL ECOSYSTEMS ALPINE GRASSLANDS CLIMATE-CHANGE CO2 PRODUCTION PLATEAU DYNAMICS MODELS MINERALIZATION UNCERTAINTY Geology Geosciences Multidisciplinary |
spellingShingle |
Science & Technology Physical Sciences ORGANIC-CARBON TERRESTRIAL ECOSYSTEMS ALPINE GRASSLANDS CLIMATE-CHANGE CO2 PRODUCTION PLATEAU DYNAMICS MODELS MINERALIZATION UNCERTAINTY Geology Geosciences Multidisciplinary Ding, Jinzhi Chen, Leiyi Ji, Chengjun Hugelius, Gustaf Li, Yingnian Liu, Li Qin, Shuqi Zhang, Beibei Yang, Guibiao Li, Fei Fang, Kai Chen, Yongliang Peng, Yunfeng Zhao, Xia He, Honglin Smith, Pete Fang, Jingyun Yang, Yuanhe Decadal soil carbon accumulation across Tibetan permafrost regions |
topic_facet |
Science & Technology Physical Sciences ORGANIC-CARBON TERRESTRIAL ECOSYSTEMS ALPINE GRASSLANDS CLIMATE-CHANGE CO2 PRODUCTION PLATEAU DYNAMICS MODELS MINERALIZATION UNCERTAINTY Geology Geosciences Multidisciplinary |
description |
Permafrost soils store large amounts of carbon. Warming can result in carbon release from thawing permafrost, but it can also lead to enhanced primary production, which can increase soil carbon stocks. The balance of these fluxes determines the nature of the permafrost feedback to warming. Here we assessed decadal changes in soil organic carbon stocks in the active layer-the uppermost 30 cm-of permafrost soils across Tibetan alpine regions, based on repeated soil carbon measurements in the early 2000s and 2010s at the same sites. We observed an overall accumulation of soil organic carbon irrespective of vegetation type, with a mean rate of 28.0 g Cm-2 yr(-1) across Tibetan permafrost regions. This soil organic carbon accrual occurred only in the subsurface soil, between depths of 10 and 30 cm, mainly induced by an increase of soil organic carbon concentrations. We conclude that the upper active layer of Tibetan alpine permafrost currently represents a substantial regional soil carbon sink in a warming climate, implying that carbon losses of deeper and older permafrost carbon might be offset by increases in upper-active-layer soil organic carbon stocks, which probably results from enhanced vegetation growth. |
format |
Article in Journal/Newspaper |
author |
Ding, Jinzhi Chen, Leiyi Ji, Chengjun Hugelius, Gustaf Li, Yingnian Liu, Li Qin, Shuqi Zhang, Beibei Yang, Guibiao Li, Fei Fang, Kai Chen, Yongliang Peng, Yunfeng Zhao, Xia He, Honglin Smith, Pete Fang, Jingyun Yang, Yuanhe |
author_facet |
Ding, Jinzhi Chen, Leiyi Ji, Chengjun Hugelius, Gustaf Li, Yingnian Liu, Li Qin, Shuqi Zhang, Beibei Yang, Guibiao Li, Fei Fang, Kai Chen, Yongliang Peng, Yunfeng Zhao, Xia He, Honglin Smith, Pete Fang, Jingyun Yang, Yuanhe |
author_sort |
Ding, Jinzhi |
title |
Decadal soil carbon accumulation across Tibetan permafrost regions |
title_short |
Decadal soil carbon accumulation across Tibetan permafrost regions |
title_full |
Decadal soil carbon accumulation across Tibetan permafrost regions |
title_fullStr |
Decadal soil carbon accumulation across Tibetan permafrost regions |
title_full_unstemmed |
Decadal soil carbon accumulation across Tibetan permafrost regions |
title_sort |
decadal soil carbon accumulation across tibetan permafrost regions |
publishDate |
2017 |
url |
http://210.75.249.4/handle/363003/7077 https://doi.org/10.1038/NGEO2945 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
NATURE GEOSCIENCE http://210.75.249.4/handle/363003/7077 doi:10.1038/NGEO2945 |
op_doi |
https://doi.org/10.1038/NGEO2945 |
container_title |
Nature Geoscience |
container_volume |
10 |
container_issue |
6 |
container_start_page |
420 |
op_container_end_page |
424 |
_version_ |
1812180337174773760 |