The Scientific World Journal / 2014 / Article / Tab 4

Research Article

Factors Controlling Carbon Metabolism and Humification in Different Soil Agroecosystems

Table 4

Principal components (PC) and component loadings related to physical, chemical, and biochemical properties determined in the different soils.

PC1PC2PC3

TOC0.5180.355
THC−0.1750.184
AHC0.0070.281
TN0.5850.4960.611
EG−0.0050.402
TG0.196−0.111
WSC0.288−0.091
DH-ase0.4190.261
B/E3s0.164−0.169
N/Os0.1010.233
porosity0.057−0.331
Var. Sp.4.4982.1962.382
Prp. Tot.0.4090.2000.217

TOC: total organic carbon; THC: total humic carbon; AHC: active humic carbon; TN: total nitrogen; EG: extracellular -glucosidase activity; TG: -glucosidase activity; WSC: water soluble carbon; DH-ase: dehydrogenase activity; B/E3s: benzene/toluene whole soil; N/Os: furfural/pyrrole whole soil. Var. Sp.: explained variance; Prp. Tot.: total proportionality.
Variables with component loadings used to interpret the PCs; threshold level: 0.7.