Organic carbon stocks and sequestration rates of forest soils in Germany.
Bottom Line: We identified the organic layer C pool as stable although C was significantly sequestered under coniferous forest at lowland sites.The applied uncertainty analyses in this study link the variability of strata with measurement errors.In accordance to other studies for Central Europe, the results showed that the applied method enabled a reliable nationwide quantification of the soil C pool development for a certain period.
Affiliation: Johann Heinrich von Thünen Institute, Institute of Forest Ecosystems, Alfred-Möller-Straße 1, 16225, Eberswalde, Germany.Show MeSH
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Mentions: Changes in bulk density may result in changes in the C pool. Therefore, we analyzed the relation between bulk density and C concentrations in the mineral soil. To consider that bulk densities were partly transferred from the first to the second inventory, and vice versa, the analysis was conducted exclusively with untransferred data. We showed that in each depth increment the bulk density decreased with increasing C concentrations (Fig.6). Similar results could be obtained for the NFSI I in the uppermost increment (r2 = 0.37; y = 1.3181 − 0.0082x), for the 5–10 cm increment (r2 = 0.46; y = 1.4238 − 0.0113x), as well as for the lowest depth (r2 = 0.24; y = 1.4626 − 0.0180x). The relations, however, differed in each depth increment indicated by shallower slopes in the uppermost increment compared to the lower depth increments.
Affiliation: Johann Heinrich von Thünen Institute, Institute of Forest Ecosystems, Alfred-Möller-Straße 1, 16225, Eberswalde, Germany.