EGU21-14052
https://doi.org/10.5194/egusphere-egu21-14052
EGU General Assembly 2021
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Contrasting  effect of coniferous and broadleaf trees on soil carbon storage during reforestation of mature soils and afforestation of immature soils

Lucie Hublova and Jan Frouz
Lucie Hublova and Jan Frouz
  • Biology Centre, SoWa Na sáckách 7, Ceske Budejovice, Czechia

Soils and forest soil in particular represent important pools of carbon (C). Here, we present a quantitative review of common garden experiments in which various tree species were planted alongside each other in European countries to answer following questions: Does soil sequester more C under broadleaf than under conifer trees? and How do the effects of tree species and litter quality on soil C sequestration change with soil development (i.e., maturity) and other soil properties? We found that the effects of broadleaf and coniferous trees on C sequestration differed with the stage of soil development. In mature soils, more C was stored under coniferous trees than under broadleaf trees. In soils in early stages of soil development, on post-mining spoil heaps, the opposite trend was found, i.e., more C was stored under broadleaf. C sequestration under broadleaf trees was highest in immature soils and in soils with high pH. C sequestration was negatively correlated with the litter C:N ratio in post-mining soils but not in other more mature soils. Similarly C sequestration was negatively correlated with the litter C:N  in alkaline soils and in soil with high clay content. These results suggest that C sequestration mechanisms differ in immature vs. mature soils such that C storage is greater under broadleaf trees in immature soils but is greater under coniferous trees in mature soils. The study was supported by LIFE17/IPE/CZ/000005 project

How to cite: Hublova, L. and Frouz, J.: Contrasting  effect of coniferous and broadleaf trees on soil carbon storage during reforestation of mature soils and afforestation of immature soils, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-14052, https://doi.org/10.5194/egusphere-egu21-14052, 2021.

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