Pulse Brain · Growing Health Evidence Index
Peer-reviewed

Beyond bulk: Density fractions explain heterogeneity in global soil carbon abundance and persistence

Katherine Heckman, Caitlin Hicks Pries, C. R. Lawrence, Craig Rasmussen, Susan E. Crow, Alison M. Hoyt, Sophie F. von Fromm, Zheng Shi, Shane Stoner, Casey McGrath, Jeffrey Beem‐Miller, Asmeret Asefaw Berhe, Joseph C. Blankinship, Marco Keiluweit, E. Marín-Spiotta, J. Grey Monroe, Alain F. Plante, Joshua P. Schimel, Carlos A. Sierra, Aaron Thompson, Rota Wagai

Global Change Biology · 2021

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Summary

soil) to climate varied among pools and with depth. Mineral-associated C in surface soils (<30 cm) increased more strongly with increasing wetness index than the free particulate C, but both pools showed attenuated responses to the wetness index at depth. Overall, these relationships suggest a strong influence of climate on soil C properties, and a potential loss of soil C from protected pools in areas with decreasing wetness. Relative persistence and abundance of C pools varied significantly among land cover types and soil parent material lithologies. This variability in each pool's relationship to environmental factors suggests that not all soil organic C is equally vulnerable to global change. Therefore, projections of future soil organic C based on patterns and responses of bulk soil o

Subject
Soil carbon & organic matter
Source type
Peer-reviewed study
System type
Other
DOI
10.1111/gcb.16023
Catalogue ID
SNmojxd9bn-ywar0m
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