Figure 8From: Root biomass and soil carbon distribution in hybrid poplar riparian buffers, herbaceous riparian buffers and natural riparian woodlots on farmland Negative relationship between soil pH and soil C concentration (excluding LFH) in the 0–20 cm depth range (p < 0.05). Mean soil pH data and mean C concentration data obtained for each land use at each site (n = 12) were used to obtain this relationship.Back to article page