Data associated with Leuthold et al. - "Decadal persistence of grassland soil organic matter derived from litter and pyrogenic inputs"

<p>These are data associated with the manuscript, "Decadal persistence of grassland soil organic matter derived from litter and pyrogenic inputs", by Leuthold et al., published in Nature Geoscience on January 24, 2025. Included herein are 4 spreadsheets that contain information on the chemical and isotopic composition of soil organic matter fractions isolated via the combined-size density fractionation of soils sampled at the Konza Prarie LTER site in Kansas, USA. While data are present for depths below 5 cm, the bulk of the data are associated with samples from 0 - 2, and 2 - 5 cm. Two different experimental treatments are represented in the data. In one experimental treatment, isotopically enriched (13C and 15N) litter material (<em>Andropogon gerardii</em>) was applied to the soil surface and tracked into the soil organic matter over the course of 10 years. In the other, isotopically enriched (13C and 15N) pyrogenic organic matter was applied to the soil and similarly tracked for 9 years. Information about analysis instrumentation and addtional details available upon request.</p> <p> </p> <p>The analysis code, including the mixing models, statistics, and code for the data visualization are available on Github, in the linked repository. Any additional questions about the data can be directed to Dr. Sam Leuthold (sam.leuthold@colostate.edu).</p>