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Computing the mean residence time of soil carbon fractions using stable isotopes: impacts of the model framework

Abstract : Our findings indicated that many of the reviewed studies assumed wrongly that the system was at steady state or could be described by a single-pool approach. To select the correct model, exact knowledge of C input rates and several data points are needed from the beginning of the experiment. For steady-state conditions an apparent temporal change of MRT computed from a single-pool model is thus a clear indicator that a two-pool approach must be chosen. The errors made by the wrong choice of model varied with the length of the experiment and usually resulted in an over-estimate of MRT by a factor of 1.15 for some data published on physical size separates, but by a factor of up to 11 for individual microbial biomarkers such as muramic acid.
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https://hal.inrae.fr/hal-02649284
Contributor : Migration Prodinra <>
Submitted on : Friday, May 29, 2020 - 11:42:57 AM
Last modification on : Friday, April 9, 2021 - 3:33:01 AM

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Delphine Derrien, W. Amelung. Computing the mean residence time of soil carbon fractions using stable isotopes: impacts of the model framework. European Journal of Soil Science, Wiley, 2011, 62 (2), pp.237 - 252. ⟨10.1111/j.1365-2389.2010.01333.x⟩. ⟨hal-02649284⟩

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