TY - JOUR
T1 - Vulnerability of mineral-associated soil organic carbon to climate across global drylands
AU - Díaz-Martínez, Paloma
AU - Maestre, Fernando T.
AU - Moreno-Jiménez, Eduardo
AU - Delgado-Baquerizo, Manuel
AU - Eldridge, David J.
AU - Saiz, Hugo
AU - Gross, Nicolas
AU - Le Bagousse-Pinguet, Yoann
AU - Gozalo, Beatriz
AU - Ochoa, Victoria
AU - Guirado, Emilio
AU - García-Gómez, Miguel
AU - Valencia, Enrique
AU - Asensio, Sergio
AU - Berdugo, Miguel
AU - Martínez-Valderrama, Jaime
AU - Mendoza, Betty J.
AU - García-Gil, Juan C.
AU - Zaccone, Claudio
AU - Panettieri, Marco
AU - García-Palacios, Pablo
AU - Fan, Wei
AU - Benavente-Ferraces, Iria
AU - Rey, Ana
AU - Eisenhauer, Nico
AU - Cesarz, Simone
AU - Abedi, Mehdi
AU - Ahumada, Rodrigo J.
AU - Alcántara, Julio M.
AU - Amghar, Fateh
AU - Aramayo, Valeria
AU - Arroyo, Antonio I.
AU - Bahalkeh, Khadijeh
AU - Ben Salem, Farah
AU - Blaum, Niels
AU - Boldgiv, Bazartseren
AU - Bowker, Matthew A.
AU - Bran, Donaldo
AU - Branquinho, Cristina
AU - Bu, Chongfeng
AU - Cáceres, Yonatan
AU - Canessa, Rafaella
AU - Castillo-Monroy, Andrea P.
AU - Castro, Ignacio
AU - Castro-Quezada, Patricio
AU - Chibani, Roukaya
AU - Conceição, Abel A.
AU - Currier, Courtney M.
AU - Darrouzet-Nardi, Anthony
AU - Deák, Balázs
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Springer Nature Limited 2024.
PY - 2024/9
Y1 - 2024/9
N2 - Mineral-associated organic carbon (MAOC) constitutes a major fraction of global soil carbon and is assumed less sensitive to climate than particulate organic carbon (POC) due to protection by minerals. Despite its importance for long-term carbon storage, the response of MAOC to changing climates in drylands, which cover more than 40% of the global land area, remains unexplored. Here we assess topsoil organic carbon fractions across global drylands using a standardized field survey in 326 plots from 25 countries and 6 continents. We find that soil biogeochemistry explained the majority of variation in both MAOC and POC. Both carbon fractions decreased with increases in mean annual temperature and reductions in precipitation, with MAOC responding similarly to POC. Therefore, our results suggest that ongoing climate warming and aridification may result in unforeseen carbon losses across global drylands, and that the protective role of minerals may not dampen these effects.
AB - Mineral-associated organic carbon (MAOC) constitutes a major fraction of global soil carbon and is assumed less sensitive to climate than particulate organic carbon (POC) due to protection by minerals. Despite its importance for long-term carbon storage, the response of MAOC to changing climates in drylands, which cover more than 40% of the global land area, remains unexplored. Here we assess topsoil organic carbon fractions across global drylands using a standardized field survey in 326 plots from 25 countries and 6 continents. We find that soil biogeochemistry explained the majority of variation in both MAOC and POC. Both carbon fractions decreased with increases in mean annual temperature and reductions in precipitation, with MAOC responding similarly to POC. Therefore, our results suggest that ongoing climate warming and aridification may result in unforeseen carbon losses across global drylands, and that the protective role of minerals may not dampen these effects.
UR - http://www.scopus.com/inward/record.url?scp=85200029220&partnerID=8YFLogxK
U2 - 10.1038/s41558-024-02087-y
DO - 10.1038/s41558-024-02087-y
M3 - Article
AN - SCOPUS:85200029220
SN - 1758-678X
VL - 14
SP - 976
EP - 982
JO - Nature Climate change
JF - Nature Climate change
IS - 9
ER -
