Fig. 2: Fire significantly decouples soil biogeochemistry globally.

Estimates (±95% CI) of the log response ratio for soil carbon, soil nitrogen, soil phosphorus, microbial biomass, and SOM decomposition under different plant functional types (A), mycorrhizal type (B), and Köppen climate type (C). The dashed lines are drawn at LnRR = 0. Number values for each point indicate sample size. The error bars indicate the 95% confidence intervals (CI), and the symbol * indicates statistical significance. Ecological connectivity network among six soil biogeochemistry attributes in respond to fire (D). Each attribute in the network is a node and connections represent partial correlation coefficients between two variables after conditioning on all other variables. The links with blue and red color indicate positive and negative correlation, respectively. The thickness of the links indicates the partial correlation coefficient. Principal component analysis (PCA) showing the responses (lnRR) of multiple soil biogeochemical attributes to fire (E). SOM soil organic matter, AM Arbuscular mycorrhizal fungi, ECM Ectomycorrizal fungi, SOM soil organic matter.