Table 2.

Chemical parameter changes of soil substrates during a 12-weeks experiment under controlled conditions

Properties		LS	LS-c	LS-B	LS-P	HS	HS-c	HS-B	HS-P
pH		2.1a ± 0.0	2.6bc ± 0.0	2.5bd ± 0.1	2.9e ± 0.3	2.5bc ± 0.0	2.6c ± 0.0	2.3d ± 0.0	2.5bc ± 0.1
EC	[mS cm−1]	1.87a ± 0.057	0.39b ± 0.032	0.59c ± 0.11	0.23d ± 0.23	2.59e ± 0.053	2.53e ± 0.075	2.98f ± 0.123	2.58e ± 0.047
St	[mg kg−1]	5090a ± 483	6447a ± 397	5947a ± 1319	6178a ± 1870	42521b ± 2670	35634c ± 9568	33247c ± 4033	34157c ± 4291
SOC	[g kg−1]	3.22a ± 0.09	2.89a ± 0.32	2.97a ± 0.16	3.09a ± 0.20	7.78b ± 0.13	7.23b ± 0.34	7.80b ± 1.14	7.20b ± 0.44
Nt		0.03a ± 0.03	0.02a ± 0.01	0.03a ± 0.01	0.02a ± 0.00	0.16b ± 0.02	0.19bc ± 0.04	0.22c ± 0.04	0.18b ± 0.01
Ca		7.06a ± 0.50	0.07b ± 0.05	0.06b ± 0.00	0.38b ± 0.36	11.68c ± 1.56	4.21de ± 2.25	2.95d ± 0.73	5.99de ± 2.23
Mg		0.09ac ± 0.01	0.04b ± 0.01	0.04b ± 0.00	0.05b ± 0.00	0.11a ± 0.00	0.08c ± 0.04	0.11a ± 0.01	0.11a ± 0.01
Al		0.97ab ± 0.09	0.37c ± 0.25	0.43c ± 0.03	0.49c 0.04	1.51e ± 0.00	0.77ad ± 0.44	1.02ab ± 0.18	1.25be ± 0.17
RESP	[μg CO2/g/24 h]	n.d.	2.49a ± 0.48	2.75a ± 1.38	1.91a ± 0.71	n.d.	2.40a ± 0.57	0.99a ± 0.48	2.24a ± 0.59

Mean values with the same letter are not significantly different at p = 0.5, 2.53 ± 0.04—mean and SD

LS soil substrate with 5090 mg kg⁻¹ S before the experiment, LS-c control sample of soil substrate with 5090 mg kg⁻¹ S after the experiment, LS-B birch litter after the experiment on substrate with 5090 mg kg⁻¹ S, LS-P pine litter after the experiment on substrate with 5090 mg kg⁻¹ S, HS soil substrate with 42,500 mg kg⁻¹ S before the experiment, HS-c control sample of soil substrate with 42,500 mg kg⁻¹ S after the experiment, HS-B birch litter after the experiment on substrate with 42,500 mg kg⁻¹ S, HS-P pine litter after the experiment on substrate with 42,500 mg kg⁻¹ S, n.d. no data