Table 3.

Results of three-way-ANOVA of soil chemical parameters and permutational multivariate analysis of variance using distance matrices (ADONIS). ADONIS was performed with a Euclidean distance matrix including all 86 individual substances detected with Pyr-GC/MS. The same Euclidean distance matrix was used to create the NMDS plot in Fig. 3. Significant differences for individual factors (treatment, depth and fraction) as well as their interactions are indicated by asterisks.

	Treatment	Fraction	Depth	Treatment × fraction	Treatment × depth	Fraction × depth	Treatment × fraction × depth
Organic C content (% dry weight)		<0.001				0.010	0.035
Total N content (% dry weight)		<0.001
C:N ratio		<0.001				0.014
δ13C	0.026	<0.001
Δ14C		<0.001	<0.001
δ15N		<0.001	<0.001
Carbohydrates				0.008		0.013
Lipids and waxes
N-bearing compounds		<0.001					0.021
Aromatic compounds		<0.001	0.036			0.023
Lignin	0.041	<0.001
Phenolic compounds		<0.001		0.027
Chemical fingerprint (ADONIS)	<0.001	<0.001		0.005		<0.001	<0.001