Sorption and Environmental Risks of Phosphorus in Subtropical Forest Soils

Table 2

Parameter of adsorption isotherm fitting curve and PSI of the O/A and AB horizons of the red soil (RS) and limestone soil (LS).

Soil types	Langmuir equation					Freundlich equation
	(mg·kg^-1)			MBC (mg·kg^-1)	PSI (mg·kg^-1)
RS-O/A	1134.98	0.030	0.96	34.56	412.07	115.46	0.03	0.94
RS-AB	981.87	0.048	0.96	47.32	410.16	141.87	0.05	0.94
LS-O/A	1110.29	0.023	0.97	25.90	407.63	80.21	0.02	0.98
LS-AB	1036.41	0.034	0.91	35.43	415.84	112.11	0.03	0.91