Land Use Changes Affecting Soil Organic Matter Accumulation in Topsoil and Subsoil in Northeast Thailand

Table 3

Soil series and bulk density in soil profile under different land uses.

Location	Land use types	Soil series	Bulk density (g·cm^−3)
			Soil depth (cm)
			0–20	20–40	40–60	60–80	80–100	0–100
Muang	Forest	Nam Phong	1.60	1.50	1.49	1.54	1.55	1.54
	Cassava	Nam Phong	1.58	1.56	1.51	1.62	1.49	1.55
	Sugarcane	Roi Et	1.50	1.63	1.57	1.56	1.62	1.58
	Paddy	Roi Et	1.69	1.68	1.76	1.78	1.87	1.76
Mean		1.59	1.59	1.58	1.63	1.63
Kantharawichai	Forest	Khorat	1.55	1.61	1.59	1.58	1.59	1.58
	Cassava	Nam Phong	1.54	1.59	1.63	1.59	1.60	1.59
	Sugarcane	Roi Et	1.63	1.57	1.75	1.60	1.71	1.65
	Paddy	Roi Et	1.62	1.83	1.70	1.77	1.87	1.76
Mean		1.59	1.65	1.67	1.64	1.69
Kosum Phisai	Forest	Khorat	1.44	1.34	1.40	1.45	1.47	1.42
	Cassava	Khorat	1.49	1.52	1.49	1.51	1.65	1.53
	Sugarcane	Khorat	1.44	1.49	1.56	1.58	1.75	1.56
	Paddy	Khorat	1.62	1.67	1.60	1.61	1.63	1.63
Mean		1.50	1.51	1.51	1.54	1.63
Kut Rang	Forest	Nam Phong	1.59	1.51	1.51	1.51	1.51	1.53
	Cassava	Nam Phong	1.50	1.65	1.59	1.74	1.73	1.64
	Sugarcane	Ubon	1.51	1.54	1.61	1.49	1.63	1.56
	Paddy	Satuk	1.71	1.59	1.56	1.87	1.63	1.67
Mean		1.58	1.57	1.57	1.65	1.63
Borabue	Forest	Khorat	1.61	1.50	1.43	1.54	1.58	1.53
	Cassava	Khorat	1.58	1.78	1.60	1.53	1.56	1.61
	Sugarcane	Roi Et	1.55	1.58	1.55	1.95	1.84	1.69
	Paddy	Roi Et	1.56	1.60	1.58	1.63	1.72	1.62
Mean		1.58	1.62	1.54	1.66	1.68
Wapi Pathum	Forest	Ubon	1.64	1.64	1.65	1.58	1.51	1.60
	Cassava	Ubon	1.54	1.57	1.60	1.70	1.72	1.63
	Sugarcane	Ubon	1.43	1.47	1.50	1.56	1.61	1.51
	Paddy	Ubon	1.57	1.64	1.60	1.66	1.78	1.65
Mean		1.55	1.58	1.59	1.63	1.66

The data were from one replication.