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Data from: Dynamics of deep soil carbon - insights from 14C time series across a climatic gradient

van der Voort, Tessa S.; Mannu, Utsav; Hagedorn, Frank; McIntyre, Cameron; Walthert, Lorenz; Schleppi, Patrick; Haghipour, Negar; Eglinton, Timothy I.;
Open Access
Abstract
Quantitative constraints on soil organic matter (SOM) dynamics are essential for comprehensive understanding of the terrestrial carbon cycle. Deep soil carbon is of particular interest, as it represents large stocks and its turnover times remain highly uncertain. In this study, SOM dynamics in both the top and deep soil across a climatic (average temperature ~1-9 °C) gradient are determined using time-series (~20 years) 14C data from bulk soil and water-extractable organic carbon (WEOC). Analytical measurements reveal enrichment of bomb-derived radiocarbon in the deep soil layers on the bulk level during the last two decades. The WEOC pool is strongly enriched i...
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