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Fig. 6 | Microbiome

Fig. 6

From: Competitive interaction with keystone taxa induced negative priming under biochar amendments

Fig. 6

The impacts of soil properties and bacterial and fungal community on carbohydrate metabolism and soil metabolic quotient (qCO2) as estimated using the structural equation modeling under the non-amended (a) and biochar-amended (b) treatments. Blue lines indicate positive relationships, while red lines indicate negative relationships. The bacterial and fungal diversities are represented by the Shannon indexes based on the rarified same sequencing depth, and the bacterial and fungal networks are represented by the module eigengenes that are significantly related to diversity and carbohydrate metabolism. The contributions of the module with or without keystone taxa in the bacterial (blue rectangle) and fungal networks (red rectangle) were colored by dark or light, respectively. The width of arrows indicates the strength of significant standardized path coefficients (P < 0.05). Paths with non-significant coefficients are presented as gray lines. SMC, soil moisture capacity. ***P < 0.001; **P < 0.01; *P < 0.05

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