Raw conifer fuel wood · Calculation Rules
- Lifecycle status
- Candidate
- Content maturity
- Authored methodology
- Current version
- 0.1.0Last updated
- Readiness
- Review required
Methodology and translation states come from the source record; publishing this website does not change their review status.
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Status, classification and source details
Readiness
- Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.
Classification mapping
CPC 3.0:03131 · exact
Source
Calculation Rules
| rule_id | Applies to | Formula or rule | Inputs | Output | source_ids |
|---|---|---|---|---|---|
reference_normalization | all inventory rows | Preserve original totals and unit bridges; attribute each source/output/period share once; inventory per 1 kg reference flow = attributable exchange total / matched net accepted handover kg. The reference card alone reports 1 kg. | source totals; allocation; cp_handover | per-reference exchange | fao-fuelwood-harvesting; fao-forest-product-definitions |
paired_wood_balance | wood transfers and losses | Reconcile dry wood, water, bark, foreign matter, stock and destinations using paired records. Wet net mass changes are not automatically dry-matter loss or emissions. | cp_source_at_wood_collection; cp_source_at_stand_management; cp_preparation; cp_handover | reconciled mass/water ledger | fao-fuelwood-harvesting; fao-forest-product-definitions |
| carbon_uptake_reconciliation | Actual biogenic CO2 uptake | Record CO2 uptake only when the declared inventory method requires it and independent evidence supports it. Net carbon-stock change is not uptake: reconcile the same dry-carbon pools and period as C_open + C_atmosphere + C_nonair_in = C_close + C_harvest_out + C_other_out. Independently record non-atmospheric inputs, harvest/transfers out and evidenced respiration/other releases; cancel internal pool transfers once. Missing terms cannot be replaced by closing minus opening stock. Convert only method-verified atmospheric carbon corresponding to CO2 using 44/12, accounting for other carbon gases separately. Do not duplicate upstream uptake or assign an automatic negative credit. | cp_carbon; independent pool/transfer/release records; declared inventory method | evidenced CO2 uptake and unresolved gaps | |
site_weighting | contributing sites | Sum attributable exchange totals and qualified handover kg over traced comparable lots; compute their quotient, not an average of site ratios. Preserve excluded/nonrepresentative site disclosures. | site records; cp_handover | representative per-reference exchanges | fao-fuelwood-harvesting; fao-forest-product-definitions |
calculate_direct_release_ledger | stand_management; wood_collection; primary_extraction; wood_preparation; handover_sorting | 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_wood_collection; cp_direct_release_primary_extraction; cp_direct_release_wood_preparation; cp_direct_release_handover_sorting; existing emission cards; supplier coverage; reference quantity | Node/substance/medium-specific raw and attributed amounts and unresolved gaps | |
chemical_species_mass_accounting | elementary_nutrient_emissions | Final elementary exchanges use the mass of the identified substance and one actual receiving compartment. Keep nutrient/activity ledgers separate: species-specific N2O-N × 44/28 gives N2O, NH3-N × 17/14 gives NH3, nitrate-N × 62/14 gives nitrate, and phosphate-P × 95/31 gives phosphate. If the selected flow is elemental phosphorus instead, report kg P and convert phosphate mass by 31/95 only when that species basis is evidenced. Apply a conversion exactly once only when the method output is on the elemental basis; measured compound mass is not reconverted. Total nutrient losses cannot be assigned to a single species without a supported split, and residual/retained soil nutrient is not an emission. Keep direct/indirect pathway ledgers and avoid repeating a pathway already included in the chosen method or upstream inventory. Factor uncertainty ranges screen factors on their stated basis, not final compound amounts or admissible site emissions. Normalize the attributable compound mass once using the accepted reference quantity and the matched measured output. Unknown activity, identity or compartment remains an evidence gap and blocks a completeness claim. | cp_emissions_at_wood_collection; cp_emissions_at_primary_extraction; cp_emissions_at_wood_preparation; species-specific activity ledger, method pathway and factor basis, matched accepted output | Identity-specific exchanges and reconciled activity records |
Data Quality Requirements
| requirement_id | Applies to | Requirement | Evidence |
|---|---|---|---|
traceability | all lots | Record species, form, source, site, dates, gate and upstream boundaries; mixed unidentified material is not the conifer reference | cp_source_at_wood_collection; cp_source_at_stand_management; cp_handover |
measurement_coverage | mass/water/energy | Calibrated net mass and matched moisture; missing conversions/zero evidence/identity details are disclosed gaps, not assumed values | cp_preparation; cp_operation_at_stand_management; cp_operation_at_wood_collection; cp_operation_at_primary_extraction; cp_operation_at_wood_preparation; cp_operation_at_handover_sorting |
representativeness | sites and periods | List all contributors, weighting, harvest/seasoning conditions, stock closure and included/excluded asset phases; retain uncertainty and sensitivity | site/cohort ledger |
9. Validation Rules
| rule_id | Applies to | Rule | source_ids |
|---|---|---|---|
validate_reference | fuelwood_handover | Require one final 1 kg net as-received conifer raw-fuelwood reference at actual producer gate, qualifiers and concrete identity evidence; neither drying feed nor internal transfer is fixed to 1 kg. | fao-fuelwood-harvesting; fao-forest-product-definitions |
validate_route | source and technology | Validate actual source/technology evidence and parent/delta records; no duplicate managed and natural/residue input, no invented omitted operation, no manufactured chips/charcoal/consumer delivery in this boundary. | fao-fuelwood-harvesting; fao-forest-product-definitions |
validate_measurement | all inventory rows | Require same-reference bilingual and projected bases, real collection links and exactly-once original-unit conversion/attribution. Require every actual concrete exchange from collection requirements, with correct direction, type, property/unit and identity confirmation. | fao-fuelwood-harvesting; fao-forest-product-definitions |
validate_balance | lots and periods | Reconcile accepted/diverted/rejected/rework/retained stocks, moisture and dry matter with actual destinations; no unexplained biomass yield or universal density/LHV, and no unsupported carbon credit. | fao-fuelwood-harvesting; fao-forest-product-definitions |
validate_attribution | cohorts/sites/assets | Check complete output sets, common-burden decision, sum-to-one shares, site weights, source/phase/event indexing and no double-counted shared infrastructure or inclusive service. Unknown actual state or missing evidence blocks the corresponding dataset claim. | fao-fuelwood-harvesting; fao-forest-product-definitions |
validate_direct_release_coverage | stand_management; wood_collection; primary_extraction; wood_preparation; handover_sorting | For every activated node, reconcile its activity list against cp_direct_release_stand_management; cp_direct_release_wood_collection; cp_direct_release_primary_extraction; cp_direct_release_wood_preparation; cp_direct_release_handover_sorting: 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. |
10. Published Dataset Profile
| Field | Value |
|---|---|
| dataset_role | foreground_data_package |
| downstream_use | secondary_dataset; background_dataset |
| allowed_use | Raw conifer fuelwood producer-gate supply modelling with stated form, moisture, source and attribution |
| excluded_use | Non-conifer substitution; manufactured fuels; delivered heat/electricity; unsupported full forest carbon or sustainability claims |
| required_metadata | Species/form/bark/moisture; origin and site mix; source/operation/gate; reference lot; periods/stocks; upstream/asset scope; allocation and unit bridges |
| required_quality_disclosure | Identity/measurement/source gaps, excluded phases, concrete exchange coverage, range evidence, stock closure, uncertainty and sensitivity |
| update_trigger | Changed source/technology/gate, form/moisture, attribution, assets, supplier identity or better measurement/evidence |
11. Data Sources
| Source id | Type | Reference | Used for |
|---|---|---|---|
unsd-cpc-fuelwood-conifer | official_guidance | UNSD CPC 3.0 03131, Fuel wood of coniferous wood; https://unstats.un.org/unsd/classifications/Econ/Structure/Detail/EN/2100/03131 | Official category context; retrieved 2026-10-08 through reviewed classification source |
fao-fuelwood-harvesting | handbook | FAO, Simple technologies for charcoal making, Chapter 3: Harvesting and transporting fuelwood; https://www.fao.org/4/x5328e/x5328e04.htm | Harvest/movement/preparation decomposition only; retrieved 2026-10-08; illustrative charcoal/hardwood quantities not adopted |
fao-forest-product-definitions | official_guidance | FAO, Classifications and definitions, Production and trade of wood-based forest products; https://www.fao.org/4/x2613e/x2613e2w.htm | Raw fuelwood versus industrial roundwood/chips/charcoal; retrieved 2026-10-08; statistical equivalents not used as conversion factors |
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 |
eea-emission-methods | official_guidance | EMEP/EEA air pollutant emission inventory guidebook 2023, https://www.eea.europa.eu/en/analysis/publications/emep-eea-guidebook-2023 | conditional concrete identities and method context; does not establish site use or quantities |
ipcc-soils-n2o-2019 | official_guidance | IPCC 2019 Refinement, Volume 4, Chapter 11, https://www.ipcc-nggip.iges.or.jp/public/2019rf/pdf/4_Volume4/19R_V4_Ch11_Soils_N2O_CO2.pdf | conditional concrete identities and method context; does not establish site use or quantities |
ipcc-mobile-combustion-2006 | method_factor | IPCC 2006 Guidelines, Volume 2, Chapter 3: Mobile Combustion, https://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/2_Volume2/V2_3_Ch3_Mobile_Combustion.pdf | Only the declared actual pathway; retain activity data and applicable factors separately |
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