Loading factors for the first four principal components for baseline soil and microbial variables.

GWC = gravimetric water content; WHC = water-holding capacity; WSA = water-stable aggregates; EOC & EON = extractable organic C & N; POXC = permanganate-extractable C; BG, LAP, NAG, XYL = potential activity of β-glucosidase, leucine aminopeptidase, N-acetyl-β-glucosaminidase & xylanase, respectively; MBC &MBN = microbial biomass C & N; Cmin7 & Nmin7 = 7-d C and net N mineralization potential; STBA-24 = soil test biological activity, as measured by 72-h respiration from rewet soil. (XLSX)