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Global soil profiles indicate depth-dependent soil carbon losses under a warmer climate

Nature communications, 2022-09, Vol.13 (1), p.5514-5514, Article 5514 [Peer Reviewed Journal]

The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2022 ;ISSN: 2041-1723 ;EISSN: 2041-1723 ;DOI: 10.1038/s41467-022-33278-w

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  • Title:
    Global soil profiles indicate depth-dependent soil carbon losses under a warmer climate
  • Author: Wang, Mingming ; Guo, Xiaowei ; Zhang, Shuai ; Xiao, Liujun ; Mishra, Umakant ; Yang, Yuanhe ; Zhu, Biao ; Wang, Guocheng ; Mao, Xiali ; Qian, Tian ; Jiang, Tong ; Shi, Zhou ; Luo, Zhongkui
  • Subjects: Boreal forests ; Carbon ; Climate change ; ENVIRONMENTAL SCIENCES ; Global warming ; Organic carbon ; Organic soils ; Soil depth ; Soil profiles ; Soil properties ; Subsoils ; Topsoil
  • Is Part Of: Nature communications, 2022-09, Vol.13 (1), p.5514-5514, Article 5514
  • Description: Abstract Soil organic carbon (SOC) changes under future climate warming are difficult to quantify in situ. Here we apply an innovative approach combining space-for-time substitution with meta-analysis to SOC measurements in 113,013 soil profiles across the globe to estimate the effect of future climate warming on steady-state SOC stocks. We find that SOC stock will reduce by 6.0 ± 1.6% (mean±95% confidence interval), 4.8 ± 2.3% and 1.3 ± 4.0% at 0–0.3, 0.3–1 and 1–2 m soil depths, respectively, under 1 °C air warming, with additional 4.2%, 2.2% and 1.4% losses per every additional 1 °C warming, respectively. The largest proportional SOC losses occur in boreal forests. Existing SOC level is the predominant determinant of the spatial variability of SOC changes with higher percentage losses in SOC-rich soils. Our work demonstrates that warming induces more proportional SOC losses in topsoil than in subsoil, particularly from high-latitudinal SOC-rich systems.
  • Publisher: London: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2041-1723
    EISSN: 2041-1723
    DOI: 10.1038/s41467-022-33278-w
  • Source: PubMed Central
    Directory of Open Access Journals
    ProQuest Central
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