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Ecological Processes
Fig. 6 | Ecological Processes

Fig. 6

From: Enhanced carbon acquisition and use efficiency alleviate microbial carbon relative to nitrogen limitation under soil acidification

Fig. 6

Structural equation modeling (SEM) illustrating the effects of soil acidification on microbial carbon use efficiency (CUE, a) and nitrogen use efficiency (NUE, c) through changing the microbial community structure and C:N imbalance between microbial biomass and resources. Solid arrows indicate significant positive (black) and negative (red) effects and numbers adjacent to arrows are standardized path coefficients. Percentages next to the endogenous variables indicate the variance explained by the model (R2). SEM calculated standardized total effect sizes of each explaining parameter on CUE (b) and NUE (d)

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