Management-related energy, nutrient and worktime efficiencies of the wood fuel production and supply chain: modelling and assessment

Table 3 Bucking parameters and resulting tree compartment assignment and material form. Bucking of branches is a Boolean parameter that specifies if branches are cut at the 7-cm-diameter limit or not (FWD = fine woody debris, <7-cm diameter over bark). The bucking rules applied in the case study are highlighted in italics

Bucking parameter				Resulting tree compartment assignment and material form
Product type of stems	Bucking of branches (Boolean)	Product type of branches^a	Product type of FWD	Stem ≥20 cm	Stem [7, 20[ cm	Branches ≥7 cm	Stem and branches <7 cm
TIMBER	True	INDUSTRY	FUEL	LOGS	LOGS ----------------------------------		FWD
TIMBER	True	INDUSTRY	Unharvested	LOGS	LOGS ----------------------------------
TIMBER	True	FUEL	FUEL	LOGS	LOGS ----------------------------------		FWD
TIMBER	True	FUEL	Unharvested	LOGS	LOGS ----------------------------------
TIMBER	False	FUEL	FUEL	LOGS	BRANCHES -----------------------------------------------------
TIMBER	False	Unharvested	Unharvested	LOGS
INDUSTRY	True	INDUSTRY	FUEL	LOGS ------------------------------------------------------			FWD
INDUSTRY	True	INDUSTRY	Unharvested	LOGS ------------------------------------------------------
INDUSTRY	True	FUEL	FUEL	LOGS -------------------------------		LOGS	FWD
INDUSTRY	True	FUEL	Unharvested	LOGS -------------------------------		LOGS
INDUSTRY	False	FUEL	FUEL	LOGS -------------------------------		BRANCHES ---------------------------
INDUSTRY	False	Unharvested	Unharvested	LOGS -------------------------------
FUEL	True	FUEL	FUEL	LOGS ------------------------------------------------------			FWD
FUEL	True	FUEL	Unharvested	LOGS ------------------------------------------------------
FUEL	False	FUEL	FUEL	LOGS -------------------------------		BRANCHES --------------------------
FUEL	False	Unharvested	Unharvested	LOGS -------------------------------

ISSN: 1297-966X