Harvesting removes above and belowground C and nutrients, and transfers some remaining material to standing dead and litter as follows:
Grain C (CGRAIN) = AGLIVC * (1 - AGLREM) * Harvest Index (HI)
Total Straw C = AGLIVC * (1 - AGLREM) - CGRAIN
Straw C removed = Total Straw C * RMVSTR
Straw C remaining as standing dead = REMWSD * (Total Straw C - Straw C removed);
Residual aboveground C = Total Straw C - Straw C removed - Straw C remaining as standing dead
Tuber C = HIBG * BGLIVC * (1 - BGLREM)
Residual belowground C = BGLIVC * (1 - BGLREM) - Tuber C
Residual aboveground C (and associated N, P, S) are partitioned into the surface structural and metabolic pools (litter). Residual belowground C (and associated N, P, S) are partitioned into the soil structural and metabolic pools. Tuber C and nutrients are added to CGRAIN and EGRAIN(*).
AGLREM - Fraction of crop or grass aboveground biomass which will not be affected by harvest operations.
Valid Range: 0.0 to 1.0
BGLREM - Fraction of belowground live which will not be affected by harvest operations. Ignored if HIBG is zero.
Valid Range: 0.0 to 1.0
FLGHRV - Flag indicating if grain is to be harvested:
0 = the grain is not to be harvested
1 = the grain is to be harvested
Valid Values: 0 or 1
HIBG - Fraction of roots that will be harvested.
Valid Range: 0.0 to 1.0
REMWSD - Fraction of the remaining residue after straw harvest (see RMVSTR) that will be left standing as standing dead.
Valid Range: 0.0 to 1.0
RMVSTR - Fraction of the aboveground live residue (after grain harvest, see CGRAIN) that will be removed as straw.
Valid Range: 0.0 to 1.0