Jensen & Sparks (2023): Inorganic carbon removal from alkaline soils: an underappreciated influence on soil organic carbon measurements in an elevated CO2 experiment

Kelsey H. Jensen, Jed P. Sparks IN: Biogeochemistry, https://doi.org/10.1007/s10533-023-01073-4

In this work, the authors compare two commonly used methods of soil inorganic carbon (SIC) removal on a set of soil samples from the same elevated CO₂ experiment. They use soils from the Nevada Desert Free Air Carbon dioxide Enrichment Facility to quantify how SIC removal with either acid washing or acid fumigation affect soil organic carbon (SOC) in control and elevated CO₂ plots. The authors then use the difference in SOC (%C and δ¹³C) between methods to infer changes in the SOC pool driven by the elevated CO₂ treatment. 

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