Integrated Crop-Livestock Management Effects on Soil Quality Dynamics in a Semiarid Region: A Typology of Soil Change Over Time

Table 2

Principal component scores of measured variables and proportion of variability explained within each axis for data group 1 (S1).

	Axis 1	Axis 2	Axis 3	Axis 4
Soil bulk density	0.59	0.42	0.27	0.17
Electrical conductivity	−0.23	−0.32	0.62	0.53
Soil pH	−0.34	0.74	0.42	0.08
Soil nitrate	0.71	−0.53	0.16	0.30
Soil ammonium	0.56	−0.15	0.50	0.54
Available P	0.65	−0.30	0.33	−0.41
Potentially mineralizable N	−0.41	0.48	0.59	0.20
Soil organic carbon	−0.58	−0.65	0.46	−0.04
Total nitrogen	−0.45	−0.70	−0.50	−0.09
C : N ratio	−0.78	0.12	−0.04	0.20
Variability explained	33.0%	25.4.%	13.6%	10.3%