Fig. 5: Decadal fire effects on soil biogeochemistry are dependent on time since fire.
From: Fire-driven disruptions of global soil biochemical relationships
Time since fire-induced change in soil carbon (A), soil nitrogen (B), soil phosphorus (C), soil microbial biomass (D), and SOM decomposition (E). The effects are expressed as the mean response ratios (±95% bootstrapped confidence intervals). Fire effects were considered statistically significant when confidence intervals do not overlap zero. Partial correlation analyses revealed that ecological and environmental factors are significantly correlated with fire-induced changes in soil biogeochemistry even when controlling for time since fire (F). The size of the circles presents correlation coefficients. The green and orange colors represent positive and negative correlations, respectively. MAT mean annual temperature, MAP mean annual precipitation, GPP gross primary productivity, LAI leaf area index, NDVI normalized difference vegetation index, BD bulk density, SOM soil organic matter. Asterisks indicate significance *P < 0.05; **P < 0.01; ***P < 0.001.
