Fig. 6: Environmental context-dependent responses of soil N accumulation in the organic and mineral horizons to functional diversity (FDis). | Nature Communications

Fig. 6: Environmental context-dependent responses of soil N accumulation in the organic and mineral horizons to functional diversity (FDis).

From: Resource availability enhances positive tree functional diversity effects on carbon and nitrogen accrual in natural forests

Fig. 6

a CMI-dependent N accumulation in the organic horizon; b N deposition-dependent N accumulation in the mineral horizon; c HI-dependent N accumulation in the mineral horizon. Colored lines represent the CMI, N deposition, and HI-specific responses, with their bootstrapped 95% confidence intervals shaded in the corresponding color. CMI, N deposition, and HI were analyzed as continuous variables but were illustrated here based on meaningful three levels of breakpoints (mean, mean plus and minus standard deviation (SD)). The significance (P) is reported for each term tested, with P values calculated using a one-sided F test. CMI: decadal average of annual climate moisture index (for each plot), ND: decadal cumulative N deposition (for each plot), HI: decadal average of annual heatwave intensity (for each plot), df: degrees of freedom.

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