Figure 2.

Changes in cumulative carbon mineralization (µg C g⁻¹ soil) on different days under different residues surface-applied to the soil. Vertical bars indicate ± standard error of the mean of the observed values.R_i: Rice, incorporated into the soils. W_i: Wheat, incorporated into the soils. M_i: Maize, incorporated into the soils. RW_i: Rice + wheat, incorporated into the soils. MW_i: Maize + wheat, incorporated into the soils. RWMb_i: Rice + wheat + mungbean, incorporated into the soils. MWMb_i: Maize + wheat + mungbean incorporated into the soils. Control: only soil.