Senescence
ØInput the fraction of the biomass at max canopy that falls to soil surface when canopy decreases from its max value to its min value.
ØInput the minimum canopy value that corresponds to fraction that experiences senescence
ØMass that falls is computed from difference in canopy percentages and nonlinear relationship between canopy percent and canopy mass
Decrease in canopy percentage is used to compute amount of residue that falls to soil surface as a part of senescence.
The input fraction is the fraction of the biomass existing at max canopy that will fall to the surface when the canopy cover decreases from its maximum value to a minimum value that is also input.