Sorption and Environmental Risks of Phosphorus in Subtropical Forest Soils

Table 1

Physiochemical properties in soil of O/A and AB horizons of the red soil and limestone soil.

	Red soil		Limestone soil
	O/A	AB	O/A	AB
pHH2O (1 : 2.5)	^aB	^aB	^aA	^aA
TOC (g·kg^-1)	^aA	^bB	^aA	^aA
TN (g·kg^-1)	^aA	^bA	^aA	^aA
TP (mg·kg^-1)	^aB	^aB	^aA	^aA
Ca (g·kg^-1)	^aB	^aB	^aA	^aA
Mg (g·kg^-1)	^aA	^aA	^aA	^aA

Note: (1) (SE, ); (2) different lowercase letters indicate significant differences () between the different soil horizons within one site. Different uppercase letters indicate significant differences () of the same soil horizon between the red soil and limestone soil.