Fig. 3: Global drivers of soil biogeochemistry in response to fire.
From: Fire-driven disruptions of global soil biochemical relationships
Multiple ranking regression reveals the relative importance of the most important predictors of fire effects on soil carbon (A), soil nitrogen (B), soil phosphorus (C), soil microbial biomass (D), and SOM decomposition (E). The standardized regression coefficients of the models are shown for each predictor with associated 95% confidence intervals. *P < 0.05, **P < 0.01, ***P < 0.001. Bar graphs show the relative importance of each predictor group (represented by variables on the y-axis), expressed as the percentage of variance explained. Biotic and abiotic predictors of soil biogeochemistry include: climate, space, plant production, soil properties, fire regime and plant functional types. 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.
