Fig. 1
From: Plant roots increase both decomposition and stable organic matter formation in boreal forest soil
Effect of the treatments and time on chemical and biological soil properties. Partial constrained correspondence analysis (pCCA) illustrates the effect of the three treatments and experimental time (year) on the chemical and biological compositions of the mesh bags. The CCA1 axis explains 28.4% (P ≤ 0.001, F = 31.36) of the data variability, and the CCA2 axis explains 6.8% (P ≤ 0.001, F = 7.59) of the data. The different mesh treatments are represented with a green triangle (1000 µm mesh), magenta circle (50 µm mesh) and black square (1 µm mesh). The variables responsible for the separation of the different samples in the analysis have been marked on the diagram with the following abbreviations: total AAs total free amino acids, CT condensed tannins, stableN stable SOM-nitrogen (N) pool, SOM soil organic matter, NH4 ammonium, PLFA_B bacterial phospholipid fatty acids (PLFA), PLFA_F fungal PLFA
