The paleoclimatic footprint in the soil carbon stock of the Tibetan permafrost region
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- Chinese Academy of Sciences (CAS), Beijing (China). Key Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research
- Chinese Academy of Sciences (CAS), Beijing (China). Key Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research and CAS Center for Excellence in Tibetan Plateau Earth Sciences; Lanzhou Univ. (China)
- Chinese Academy of Sciences (CAS), Beijing (China). Key Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research and CAS Center for Excellence in Tibetan Plateau Earth Sciences; Peking Univ., Beijing (China). Sino-French Institute for Earth System Science; Univ. of Chinese Academy of Sciences, Beijing (China)
- Univ. of Aberdeen, Aberdeen (United Kingdom). Inst. of Biological and Environmental Sciences
- Chinese Academy of Sciences, Nanjing (China)
- Lanzhou Univ. (China)
- Peking Univ. Shenzhen (China). Shenzhen Key Laboratory of Circular Economy
- Chinese Academy of Sciences, Lanzhou, Gansu (China). State Key Laboratory of Cryosphere Science Northwest Institute of Eco-Environment and Resources
- Chongqing Technology and Business Univ., Chongqing (China)
- Peking Univ., Beijing (China)
- Chinese Academy of Sciences, Xining, Qinghai (China). Key Lab. of Adaptation and Evolution of Plateau Biota, Northwest Inst. of Plateau Biology
- Chinese Academy of Sciences (CAS), Beijing (China). Key Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research and CAS Center for Excellence in Tibetan Plateau Earth Sciences
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- McMaster Univ., Hamilton, ON (Canada). McMaster Centre for Climate Change
- Auburn Univ., Auburn, AL (United States). International Center for Climate and Global Change Research
- Chinese Academy of Sciences (CAS), Beijing (China). State Key Lab. of Vegetation and Environmental Change, Inst. of Botany
- Univ. of Maryland, College Park, MD (United States)
- Chinese Academy of Sciences, Lanzhou (China). Cryosphere Research Station on Qinghai-Xizang Plateau, State Key Lab. of Cryospheric Science, Northwest Inst. of Eco–Environment and Resources (NIEER)
Tibetan permafrost largely formed during the late Pleistocene glacial period and shrank in the Holocene Thermal Maximum period. Quantifying the impacts of paleoclimatic extremes on soil carbon stock can shed light on the vulnerability of permafrost carbon in the future. Here, we synthesize data from 1114 sites across the Tibetan permafrost region to report that paleoclimate is more important than modern climate in shaping current permafrost carbon distribution, and its importance increases with soil depth, mainly through forming the soil's physiochemical properties. We derive a new estimate of modern soil carbon stock to 3 m depth by including the paleoclimate effects, and find that the stock ( PgC) is triple that predicted by ecosystem models (11.5 ± 4.2 s.e.m PgC), which use pre-industrial climate to initialize the soil carbon pool. The discrepancy highlights the urgent need to incorporate paleoclimate information into model initialization for simulating permafrost soil carbon stocks.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE; National Natural Science Foundation of China (NNSFC)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1648862
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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