Effect of spring grass fires on vegetation patterns and soil quality in abandoned agricultural lands at local and landscape scales in Central European Russia

Ecological Processes

Table 3 Chemical and physical properties of the top (0–10 cm) soil in the studied biotopes and results of v test and one-way ANOVAs; n = 6; SD standard deviation; η² effect size; v statistics of the v test

	Unburnt abandoned arable land				Burnt abandoned arable land				Mature forest				ANOVA
	Mean	SD	v	P value	Mean	SD	v	P value	Mean	SD	v	P value	η ²	P value
pH(KCl)	4.6	0.2	− 3.34	0.001	5.1	0.1	1.409	0.159	5.2	0.2	1.931	0.053	0.662	0
pH(H₂O)	5.8	0.2	− 2.180	0.029	6.0	0.1	1.01	0.312	6.1	0.3	1.170	0.242	0.280	0.085
SOC%	1.7	0.2	− 2.635	0.008	2.2	0.5	− 0.195	0.845	2.7	0.3	2.83	0.005	0.588	0.001
C%	2.0	0.2	− 1.923	0.054	2.5	0.5	− 0.681	0.496	3.8	1.3	2.605	0.009	0.429	0.015
N%	0.2	0	− 2.172	0.030	0.2	0	− 0.119	0.906	0.3	0.1	2.291	0.022	0.391	0.024
C/N	11.9	0.3	0.292	0.770	10.9	0.3	− 3.005	0.003	12.7	0.8	2.713	0.007	0.646	0
H%	0.4	0.2	− 2.330	0.020	0.6	0.1	0.094	0.925	0.8	0.2	2.235	0.025	0.409	0.019
P₂O₅ mg kg¹	6.2	2.0	− 1.469	0.142	13.1	1.5	3.611	0	5.3	2.0	− 2.142	0.032	0.776	0
K₂O₅ mg kg⁻¹	11.8	2.1	− 1.341	0.18	17.5	4.0	2.717	0.007	11.7	2.9	− 1.376	0.169	0.434	0.014
Ca²⁺ cmol kg⁻¹	25.8	1.7	− 2.686	0.007	34.5	4.5	2.125	0.034	31.6	4.6	0.561	0.575	0.472	0.008
K⁺ cmol kg⁻¹	0.6	0.1	− 1.638	0.101	1.0	0.3	2.887	0.004	0.6	0.1	− 1.249	0.212	0.493	0.006
Mg²⁺ cmol kg⁻¹	0.2	0.2	− 1.075	0.283	0.3	0.1	1.405	0.160	0.2	0.2	− 0.331	0.741	0.127	0.361
Na⁺ cmol kg⁻¹	0	0	0.555	0.579	0	0	1.555	0.120	0	0	− 2.110	0.035	0.282	0.084
Sand%	30.0	1.9	− 1.862	0.063	30.2	1.5	− 1.714	0.087	36.8	2.0	3.576	0	0.753	0
Clay%	11.3	3.1	0.906	0.365	11.7	2.1	1.262	0.207	8.1	2.3	− 2.168	0.030	0.279	0.086
Slit%	58.7	3.9	1.346	0.178	58.1	2.0	0.818	0.414	55.0	1.0	− 2.164	0.030	0.281	0.084