Fig. 8From: Total and dissolved soil organic and inorganic carbon and their relationships in typical loess cropland of Fengu BasinCorrelation between SOC (DOC:SOC) and pH or EC in the LFB, YCB and combined data (black dash lines) over 40–100 cm. One asterisk indicates significance at P < 0.05, and two asterisks at P < 0.01Back to article page