Table 2.

Materials and energy excluded from the cradle-to-gate assessment due to cut-off criteria.

Materials and Energy	Analyzed Protocols
	PAS 2050	GHG Protocol a	ISO 14067 b
Chemicals	Ammonium chloride	None	Ammonium chloride
			Sodium hydroxide
			Herbicide
	Sodium hydroxide		Paraffin wax
	Paraffin wax		K fertilizer
Energy	Energy for seedling cultivation	None	Gasoline for harvesting
	Energy for tree plantation
	Energy for total thinning

^a Under this protocol, the present study considered all of the unit processes significant to conduct a full life cycle inventory. ^b Under this protocol, a flow of less than 1% of the cumulative mass or energy was excluded from the boundary.