How far do experimentally elevated CO2 levels reach into the surrounding?: an example using the13C label of soil organic matter as an archive

Heim, A; Moser, N; Blum, H; Schmidt, M W I

doi:10.1111/j.1365-2486.2009.01843.x

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Heim, A., Moser, N., Blum, H., & Schmidt, M. W. I. (2009). How far do experimentally elevated CO2 levels reach into the surrounding?: an example using the13C label of soil organic matter as an archive. Global Change Biology, 15(6), 1598–1602. https://doi.org/10.1111/j.1365-2486.2009.01843.x

Abstract

During the last two decades, free air CO2 enrichment (FACE) studies have been conducted to study the effects of rising atmospheric CO2 concentrations on ecosystems. The distances between fumigated and control plots differ widely among those projects, but no experimental data are available how far into the surrounding area an effect of CO2 fumigation can be detected. As the CO2 gas added to the fumigated plots has a different 13C label than ambient atmospheric CO2, its carbon can be traced into plants and soil organic matter (SOM). The