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. 2017 Apr 21;11(8):1825–1835. doi: 10.1038/ismej.2017.48

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Copyright © 2017 The Author(s)

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/

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Meta-analysis of warming effects on SOC changes along the soil depth profile in field studies across the globe. The numbers of observations for all independent observations (‘All’, n=110) and other categories are shown in the figure. Observations were grouped into temperature elevations (< 2 vs ⩾2 °C), experimental durations (< 5 vs ⩾ 5 years) and different soil layers (topsoil vs subsoil). Data obtained on the mean effect sizes were reported as percentage changes under warming (that is, 100 × (|R-1|)). The warming effect was deemed significant if the 95% confidence intervals did not overlap with 0.

Inline graphic — Meta-analysis of warming effects on SOC changes along the soil depth profile in field studies across the globe. The numbers of observations for all independent observations (‘All’, n=110) and other categories are shown in the figure. Observations were grouped into temperature elevations (< 2 vs ⩾2 °C), experimental durations (< 5 vs ⩾ 5 years) and different soil layers (topsoil vs subsoil). Data obtained on the mean effect sizes were reported as percentage changes under warming (that is, 100 × (|R-1|)). The warming effect was deemed significant if the 95% confidence intervals did not overlap with 0.