Applied and Environmental Soil Science

Research Article

Explaining the Soil Quality Using Different Assessment Techniques

Table 7

Soil quality index (SQI) values of lands in the Nitisols and Luvisols based on PCA.
ParametersLands in the NitisolsLands in the Luvisols
PC1PC2PC3PC4PC5PC1PC2PC3PC4PC5
Silt   0.03894      
Clay          
pH   −0.0393      
OC 0.09243        
TN        0.053 
P          
S       0.074  
Ca     0.136    
Mg      0.087   
K          
Na          
K : Mg          
CEC          
PBS    0.0247     
B0.14193         
Cu          
Fe          
Mn         −0.046
Zn  0.08269       
 PCA-SQI = 0.42 (low)PCA-SQI = 0.40 (low)
NB: Nitisol lands PCA-SQI = (0.391 B + 0.205 OC + 0.15 Zn + 0.088 Silt + 0.088 pH + 0.059 PBS)/(0.981) = 0.42 = low Luvisol lands PCA-SQI = 0.362 Ca + 0.164 Mg + 0.125 S + 0.092 TN + 0.0.067 Mn/(0.81) = 0.40 = low.