Figure S6 : Proportion of extracellular enzyme activity
(kg-1 soil organic carbon [C]) below 20 cm in the
top meter for α-glucosidase (AG), β-glucosidase (BG), cellobiohydrolase
(CB), β-xylosidase (BX), N-acetylglucosamine (NAG), leucine
aminopeptidase (LAP), and acid phosphatase (AP) across (A) and among (B)
soil orders. Error bars show standard error of the mean (Figure panel A:
n = 19; Figure panel B: Inceptisol: n = 4, Mollisol: n = 5, Ultisol: n =
3).