Key point:
	No residue gets flattened unless it falls by decomposition at the base of the residue or an operation is used to flatten the residue.
	The flattening effect is used at harvest to determine how much of the aboveground biomass is left standing.
	Only “dead” aboveground biomass can be flattened.
	Flattening ratio values are based on process used to flatten and the type of residue.
	Standing residue of some vegetations are more easily flattened than with other vegetations.
	Based on mass.
	Follow core databases.