Fig. 2: Nonlinear thermal response of soil microbial carbon usage efficiency (CUE) with threshold values. | Nature Communications

Fig. 2: Nonlinear thermal response of soil microbial carbon usage efficiency (CUE) with threshold values.

From: Nonlinear microbial thermal response and its implications for abrupt soil organic carbon responses to warming

Fig. 2

a Mean decrease in accuracy (%IncMSE, mean and SD) estimated from 100 simulations of random forests. This was used to evaluate the importance of top environmental drivers on the original CUE. All variables were significant as evaluated using rfPermute package. b The linear relationships between original CUE and incubation temperature, mean annual temperature (MAT), aridity index, soil C:N and fungal:bacterial (F:B) ratio fitted by simple linear ordinary Least Squares regressions. c Partial feature contributions of MAT to original CUE by controlling effects of F:B ratio, incubation temperature, aridity index, SOC, and soil C:N.

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