Extended Data Fig. 6: Partial least squares path modelling (PLS-PM) of fertilization effects on SOC.
From: Soil carbon sequestration enhanced by long-term nitrogen and phosphorus fertilization
a, Pathways of fertilization effects on SOC. Arrow colors indicate effect direction (blue: positive, red: negative). Path coefficients are shown adjacent to arrows (standardized values). Significance was assessed via bootstrapping (1000 iterations). *p < 0.05, **p < 0.01, ***p < 0.001. b, Standardized total effects of factors on SOC.
