Coniferous sawlogs and veneer logs at roadside landing · Calculation Rules

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_underbark	Every wood stream	Apply documented calibrated log-scale formula and locally measured bark correction before aggregation; never use a universal bark percentage.	length, diameters, bark, scale method	m3 solid underbark by lot and grade	fao-forest-products-2020
calc_wood_balance	Harvest through grading	For the matched merchantable-stem pool, V_open + V_felled + V_purchased = V_marketed + V_removed_stem_waste + V_retained_stem_loss + V_close + delta, on a matched lot-specific solid underbark basis. V_purchased is actual harvested/prepared wood received from outside the reconciled foreground system, excluding own wood already in V_felled and internal transfers; a purchased-only route may have V_felled=0. Delta is only a signed unexplained measurement residual to disclose and investigate: known stock changes are explicit, not delta or emissions. Retained loss must originate in that input pool; branches, bark, special root/burl wood and other excluded components use separate compatible physical ledgers. Cancel paired internal transfers once at whole-package aggregation.	component-indexed felling and external receipt records; opening/closing stocks; grade and loss origins; matched scale records	volume balance by lot	fao-forest-products-2020
calc_reference	Final-reference normalization of physical ledgers and environmental burdens	R is positive accepted saw/veneer-log solid underbark volume (m3) for the same lot, boundary and period; downgraded co-products and internal transfers are excluded from that denominator. Report unallocated material, transfer and co-product totals Q as q_phys = Q/R. For environmental burdens B only, complete evidenced direct, period, output and asset attribution once, then report b_ref = B_attributed/R. Do not apply burden shares to physical ledgers or divide already final-reference amounts again.	unallocated physical ledger Q; environmental burdens B; evidenced attribution; matched reference quantity R	amount per 1 m3 reference output	reference-normalization-identity
calc_shared	Management and shared assets	Attribute actual dated service to benefiting stands/lots once using measured service drivers, then split common lot burden among marketed roundwood grades by underbark volume.	dated operations, service driver, lots, grades	activity attributable to reference grade
calculate_direct_release_ledger	stand_management; felling_removal; forest_extraction; log_preparation; grade_handover	For each unique event, substance and medium, obtain raw release E from measurement or the cited applicable method using activity A and a compatible factor EF; use E = A * EF only for a genuinely simple-factor method, after checking units and abatement scope. Do not add different substances/media; retain an unallocated raw-release ledger. Divide attributed burden totals once by matched positive final reference quantity R; do not renormalize final-reference intensities or allocate a shared event twice. Unexplained material residuals are not automatically emissions and missing factors are not zero.	cp_direct_release_stand_management; cp_direct_release_felling_removal; cp_direct_release_forest_extraction; cp_direct_release_log_preparation; cp_direct_release_grade_handover; existing emission cards; supplier coverage; reference quantity	Node/substance/medium-specific raw and attributed amounts and unresolved gaps
calc_forest_carbon_land	land, pools and upstream ownership	Distinguish gross uptake, releases, harvest carbon transfer and net stock change under the chosen method; never sum stock-change and gain/loss approaches for the same pool/period. Resolve wet volume to dry mass and carbon only with compatible density/moisture/carbon-fraction evidence and correct component scope. A log carbon balance is not a whole-forest pool balance. Attribute land and carbon quantities to the declared period and output once; keep any upstream stand coverage and purchased-wood transfer ownership without double counting. No automatic sequestration credit or fixed forest-neutrality assumption.	cp_forest_carbon_land	method-specific land/carbon quantities and explicit completeness gaps	ipcc-forest-land-2006

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_log_trace	Every log and grade	Link stand, harvest lot, species, grade, intended use and destination to dispatch.	permit, log scale and docket
dq_scale	Wood volume	State scale method, calibration, bark conversion, moisture and dimensional convention; flag inconsistent units.	scale and conversion worksheet
dq_route	Harvest route	State extraction method and bucking position; count every machine duty and output once.	machine and operation log
dq_period	Stand and infrastructure	Record establishment/tending/harvest phases and serviced years, disclosing missing historical records.	management and road-use logs
dq_balance	Inputs, grades and residues	Reconcile all marketed and retained destinations and disclose residual volume differences or missing fuel data.	grade tally and fuel reconciliation

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_product	Reference output	Require conifer species, saw/veneer intended use, raw log state and roadside gate; reject lumber, veneer sheets and pulp/other/fuel logs as the reference.	unsd-cpc-03111; fao-forest-products-2020
validate_unit	Reference and wood grades	Require 1 m3 solid underbark reference and documented local conversion for overbark, mass or stacked-volume records.	fao-forest-products-2020
validate_route	Process map	Require evidenced harvest and extraction system, one bucking position per stem segment and no duplicate extraction/preparation burdens.	fao-wood-harvesting
validate_destinations	Landing grade tally	Require one grade, destination, handover and underbark volume for every saw/veneer, pulp/panel, other industrial, fuelwood or rejected stream present.	fao-forest-products-2020
validate_rework	Downgraded and rejected wood	No automatic rework loop is assumed. If an actual lot is regraded or recut, track that operation once and prevent its earlier rejected state from also appearing as accepted output.
validate_attribution	Shared and multi-period activity	Verify phase-to-lot and asset-to-consumer drivers, direct assignment before common volume split, no burden on retained slash and no double attribution.
validate_uuid	Final TIDAS exchanges	Resolve each concrete exchange to exactly one verified flow UUID with matching flow type, direction, property, unit and use before process projection; unresolved cards are not fixed bindings.
validate_card_activation_units	All refined cards	Verify activation and actual material/formulation/task/supply specification; missing records are not zero. Each amount and Range uses one compatible property/unit; retain density and wood mass/volume bridges. Check contractor-service components against fuel, equipment and emissions to avoid double burdens.	fao-wood-harvesting
validate_direct_release_coverage	stand_management; felling_removal; forest_extraction; log_preparation; grade_handover	For every activated node, reconcile its activity list against cp_direct_release_stand_management; cp_direct_release_felling_removal; cp_direct_release_forest_extraction; cp_direct_release_log_preparation; cp_direct_release_grade_handover: each relevant event must have quantified concrete elementary exchanges, evidenced upstream-service coverage, or evidenced absence of the activity. Missing/unknown is not zero and blocks data-package completeness. Check each actual substance/medium amount, method/factor units, concrete UUID and existing-card/service coverage for omissions or duplication; empty groups, purchased-electricity upstream emissions or another node's single CO2 card do not replace this node's on-site reconciliation. Shared-asset services must not create duplicate physical release events.
validate_forest_carbon_land_coverage	stand boundary and source responsibility	Require the selected LCA method/period, pool and land applicability decisions, traceable compatible evidence/exclusions and unique coverage ownership before completeness. Unknown or missing relevant pool/history/time/unit evidence fails the completeness claim; do not interpret missing data as zero or borrow national Tier-1 defaults without justified product-LCA applicability.	ipcc-forest-land-2006

• Reconcile required/conditional activation and upstream coverage against incoming state at each node; purchased completed-state feed must not duplicate growth, harvest or preparation. Equal classification does not replace state and gate matching.

10. Published Dataset Profile

Field	Value
dataset_role	Foreground data package for coniferous sawlog and veneer-log harvest to loading-ready roadside landing
downstream_use	secondary_dataset or background_dataset for sawing or veneer inputs after gate and grade matching
allowed_use	Raw coniferous sawlog/veneer-log supply with declared region, grade and underbark basis
excluded_use	Pulp/panel wood, poles, fuelwood, non-coniferous logs, sawmilling, veneer peeling and post-landing haulage without additional datasets
required_metadata	Species/stand; management phases; region/year; harvest system; bucking position; grade/destination; gate; bark conversion; output allocation; residue fate
required_quality_disclosure	Measured/estimated volume and fuel; bark evidence; balance residual; shared-asset drivers; missing periods; unresolved UUIDs and provisional ranges
update_trigger	Changed product use, forest route, scaling, management regime, allocation basis, region or verified platform flow identity

11. Data Sources

Source id	Type	Reference	Used for
unsd-cpc-03111	official_guidance	https://unstats.un.org/unsd/classifications/Econ/Structure/Detail/EN/2100/03111	Official sawlog/veneer-log boundary
fao-forest-products-2020	official_guidance	https://www.fao.org/forestry-fao/7800-0944787ecbf6036088182f841ab15fe42.pdf	Roundwood categories, exclusions, underbark unit
fao-wood-harvesting	official_guidance	https://www.fao.org/sustainable-forest-management-toolbox/modules/wood-harvesting/2/en?tabInx=0	Felling, extraction, landing, route distinctions
reference-normalization-identity	method_factor	PCR identity: reference output divided by itself equals 1 m3 per 1 m3 reference	Reference normalization
fao-planted-forest-management	official_guidance	https://www.fao.org/sustainable-forest-management-toolbox/modules/management-of-planted-forests/1/en?tabInx=1; https://www.fao.org/4/AC601E/ac601e03.htm	Conditional planting stock, fertilization, protection and watering inputs; no universal application rates
ipcc-forest-land-2006	official_guidance	IPCC 2006 Guidelines, Volume 4, Chapter 4 Forest Land, sections 4.1–4.3, https://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/4_Volume4/V4_04_Ch4_Forest_Land.pdf	Forest pool and land-use accounting context only; national defaults do not independently approve product-LCA methodology
fao-agricultural-energy	official_guidance	FAO Energy demand and consumption in African agriculture, Annex C case-study results, https://www.fao.org/4/v9766e/v9766e08.htm	conditional concrete identities and method context; does not establish site use or quantities