TY - JOUR
T1 - Global turnover of soil mineral-associated and particulate organic carbon
AU - Zhou, Zhenghu
AU - Ren, Chengjie
AU - Wang, Chuankuan
AU - Delgado-Baquerizo, Manuel
AU - Luo, Yiqi
AU - Luo, Zhongkui
AU - Du, Zhenggang
AU - Zhu, Biao
AU - Yang, Yuanhe
AU - Jiao, Shuo
AU - Zhao, Fazhu
AU - Cai, Andong
AU - Yang, Gaihe
AU - Wei, Gehong
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/12
Y1 - 2024/12
N2 - Soil organic carbon (SOC) persistence is predominantly governed by mineral protection, consequently, soil mineral-associated (MAOC) and particulate organic carbon (POC) turnovers have different impacts on the vulnerability of SOC to climate change. Here, we generate the global MAOC and POC maps using 8341 observations and then infer the turnover times of MAOC and POC by a data-model integration approach. Global MAOC and POC storages are 975964987 Pg C (mean with 5% and 95% quantiles) and 330323337 Pg C, while global mean MAOC and POC turnover times are 12945383 yr and 23582 yr in the top meter, respectively. Climate warming-induced acceleration of MAOC and POC decomposition is greater in subsoil than that in topsoil. Overall, the global atlas of MAOC and POC turnover, together with the global distributions of MAOC and POC stocks, provide a benchmark for Earth system models to diagnose SOC-climate change feedback.
AB - Soil organic carbon (SOC) persistence is predominantly governed by mineral protection, consequently, soil mineral-associated (MAOC) and particulate organic carbon (POC) turnovers have different impacts on the vulnerability of SOC to climate change. Here, we generate the global MAOC and POC maps using 8341 observations and then infer the turnover times of MAOC and POC by a data-model integration approach. Global MAOC and POC storages are 975964987 Pg C (mean with 5% and 95% quantiles) and 330323337 Pg C, while global mean MAOC and POC turnover times are 12945383 yr and 23582 yr in the top meter, respectively. Climate warming-induced acceleration of MAOC and POC decomposition is greater in subsoil than that in topsoil. Overall, the global atlas of MAOC and POC turnover, together with the global distributions of MAOC and POC stocks, provide a benchmark for Earth system models to diagnose SOC-climate change feedback.
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U2 - 10.1038/s41467-024-49743-7
DO - 10.1038/s41467-024-49743-7
M3 - Article
C2 - 38909059
AN - SCOPUS:85196624116
SN - 2041-1723
VL - 15
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 5329
ER -