Reclaiming Subsidized Land: An Evaluation of Coal Gangue Interlayers

Table 7

Organic matter of soil and coal gangue of interlayered soil profiles.

	Treatment	0–10 cm	20–30 cm	40–50 cm	60–70 cm	80–90 cm	100–110 cm
OM (g/kg)	CK1	6.26 ± 0.05a	5.96 ± 0.30a	5.53 ± 0.43f	3.36 ± 0.43e	3.41 ± 0.29b	3.40 ± 0.28f
	CK2	6.13 ± 0.23a	5.85 ± 0.40a	5.51 ± 0.02f	4.63 ± 0.38e	96.99 ± 1.76a	70.38 ± 4.64de
	T1	5.07 ± 0.07b	4.26 ± 0.18b	77.34 ± 3.40d	3.77 ± 0.17e	97.81 ± 4.78a	83.42 ± 2.88c
	T2	4.83 ± 0.28b	4.20 ± 0.21b	71.29 ± 0.38e	79.36 ± 3.55d	3.72 ± 0.08b	67.72 ± 3.47e
	T3	4.76 ± 0.54b	4.08 ± 0.26b	80.05 ± 1.85d	117.31 ± 3.24a	3.66 ± 0.05b	91.21 ± 1.24b
	T4	4.99 ± 0.13b	4.29 ± 0.12b	107.45 ± 1.33c	5.09 ± 0.58e	4.38 ± 0.23b	74.85 ± 1.37de
	T5	5.18 ± 0.46b	4.36 ± 0.62b	138.23 ± 1.24a	107.34 ± 5.24b	3.92 ± 0.41b	106.95 ± 2.11a
	T6	5.28 ± 0.17b	4.32 ± 0.13b	4.45 ± 0.26f	93.11 ± 2.41c	4.12 ± 0.64b	102.17 ± 2.04a
	T7	5.32 ± 0.58b	4.37 ± 0.21b	4.12 ± 0.08f	106.44 ± 3.42b	4.01 ± 0.47b	76.74 ± 3.27d
	T8	4.65 ± 0.27b	3.94 ± 0.66b	120.20 ± 3.26b	106.41 ± 2.87b	3.56 ± 0.33b	71.73 ± 0.94de