Editorial: Organic carbon pools in permafrost regions on the Qinghai–Xizang (Tibetan) Plateau

• Published in: The Cryosphere
• Main Authors: C. Mu, T. Zhang, Q. Wu, X. Peng, B. Cao, X. Zhang, G. Cheng
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2015
• Subjects: geo; envir; Arctic; permafrost; The Cryosphere; Thermokarst
• Online Access: https://doi.org/10.5194/tc-9-479-2015; http://www.the-cryosphere.net/9/479/2015/tc-9-479-2015.pdf; https://doaj.org/article/0fe0af1180544daeaf08ed71d17f3a4c

The current Northern Circumpolar Soil Carbon Database did not include organic carbon storage in permafrost regions on the Qinghai–Xizang (Tibetan) Plateau (QXP). In this study, we reported a new estimation of soil organic carbon (SOC) pools in the permafrost regions on the QXP up to 25 m depth using a total of 190 soil profiles. The SOC pools were estimated to be 17.3 ± 5.3 Pg for the 0–1 m depth, 10.6 ± 2.7 Pg for the 1–2 m depth, 5.1 ± 1.4 Pg for the 2–3 m depth and 127.2 ± 37.3 Pg for the layer of 3–25 m depth. The percentage of SOC storage in deep layers (3–25 m) on the QXP (80%) was higher than that (39%) in the yedoma and thermokarst deposits in arctic regions. In total, permafrost regions on the QXP contain approximately 160 ± 87 Pg SOC, of which approximately 132 ± 77 Pg (83%) stores in perennially frozen soils and deposits. Total organic carbon pools in permafrost regions on the QXP was approximately 8.7% of that in northern circumpolar permafrost region. The present study demonstrates that the total organic carbon storage is about 1832 Pg in permafrost regions on northern hemisphere.