Variables | Factor 1 | Factor 2 | Factor 3 |
---|
ON_OFF | 0.83a | − 0.05 | 0.09 |
Density (mg·L) | 0.87a | 0.33 | 0.09 |
P (mg·kg−1) | −0.48a | 0.04 | 0.02 |
K (mg·kg−1) | −0.63a | −0.15 | 0.12 |
Ca (mg·kg−1) | 0.01 | −0.88a | 0.27 |
Mg (mg·kg−1) | −0.00 | −0.88a | 0.17 |
Acidity (cmol·kg−1) | −0.00 | −0.02 | − 0.97a |
Cations (cmol·kg−1) | − 0.04 | −0.98a | 0.17 |
H+ | −0.07 | 0.33 | −0.73a |
Zn (mg·kg−1) | −0.59a | 0.05 | 0.03 |
Mn (mg·kg−1) | −0.28 | 0.07 | −0.19 |
Cu (mg·kg−1) | −0.36 | −0.07 | − 0.01 |
Carbon (%) | −0.88a | − 0.25 | −0.08 |
Clay (%) | −0.14 | −0.53a | − 0.12 |
Pasture structure | −0.84a | 0.09 | −0.11 |
- A factor loading is the correlation with the factor/axis. Variation accounted for was 41% on axis 1, 31% on axis 2 and 25% on axis 3. ON_OFF: ON (1) was on the pipeline construction servitude and OFF (0) was on adjoining undamaged land. pH was expressed as hydrogen ion concentration (H+). Pasture structure was rated (5 – lawn, 4 – near lawn, 3 – more grass than bare ground, 2 – more bare ground than grass, 1 – sparse to bare). Data, except ON_OFF were standardized (standardized value = (Xi – mean)/σ where Xi is the value to be transformed, mean is the average of the paired values ON and OFF the construction servitude (i.e. (Xi + Xj)/2) and σ is the standard deviation for all the values of that variable in the database)
- a Significant factor loading