Change in fragmentation due to linear infrastructure
Measurement answer
What this metric measures
Reports characteristics of upgraded or new linear infrastructure and completed wildlife-crossing or other mitigation measures, disaggregated between sensitive locations and other areas and by ecosystem type, to disclose potential fragmentation effects.
Specification
Metric specification
- Result format
- Multi-field profile
- Unit
- Structured table — see field-level units
- Reporting basis
- Reporting period
- Aggregation
- Report separately for upgraded or new linear infrastructure in sensitive locations, by sensitive-location criteria and ecosystem type, and in other areas, by ecosystem type.
- Pillar
- Environmental
- Topic
- Nature-related impacts of linear infrastructure
- Controlled domain
- Nature, biodiversity and land
- Entity type
- Metric
Reporting boundary
Upgraded or new linear infrastructure built by the reporting organization, differentiated between sensitive locations and other areas; includes associated completed wildlife-crossing structures or other mitigation methods.
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Adopting DisclosureSource evidence
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- Additional sector guidance – Engineering, construction and real estate, Version 1.0 (January 2025), section 3.2, Table 13, page 76. | Additional sector guidance – Engineering, construction and real estate, Version 1.0 (January 2025), page 76, section 3.2, Table 13
- Adopting DisclosureEH.C1.0
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, January 2025
- Requirement
- Conditional
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Additional sector guidance – Engineering, construction and real estate, Version 1.0 (January 2025), page 76, section 3.2, Table 13
- Adopting DisclosureRE.A1.0
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, January 2025
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Additional sector guidance – Engineering, construction and real estate, Version 1.0 (January 2025), page 76, section 3.2, Table 13
Value structure
Dimensions and units
- Unit
- Structured table — see field-level units
- Reporting basis
- Reporting period
Unit meaning: Each field uses its stated unit and retains the applicable sector, reporting boundary, period and method.
Table fields and units
- Infrastructure status (upgraded or new)
- Location category (sensitive location or other area)
- Sensitive-location criteria
- Ecosystem type
- Length of linear infrastructure (km)
- Infrastructure footprint (km²)
- Number of lanes
- Planned traffic volume (unit and method disclosed)
- Surface or material type
- Completed wildlife-crossing structures or other mitigation methods (number and, where applicable, per-kilometre basis)
Published dimensions
- infrastructure status: upgraded or new
- location category: sensitive location or other area
- sensitive-location criteria
- ecosystem type
- infrastructure characteristic
- mitigation type
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaReport the source-defined result with its stated fields and method disclosures. The source describes a directly reportable, multi-field core-sector disclosure covering linear-infrastructure extent, design and mitigation measures. It is not equivalent to the shortlisted land-use-change or infrastructure-cost metrics because its population, boundary, value shape and fields concern linear infrastructure and fragmentation-related mitigation. The heterogeneous reported fields are retained as a structured disclosure rather than treated as calculation operands or collapsed into a single score.
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 30 August 2026
TNFD additional sector guidance collection
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Locator
- Additional sector guidance – Engineering, construction and real estate, Version 1.0 (January 2025), section 3.2, Table 13, page 76. | Additional sector guidance – Engineering, construction and real estate, Version 1.0 (January 2025), page 76, section 3.2, Table 13
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Change in fragmentation due to linear infrastructure”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).
- Criteria used to identify sensitive locations.
- Ecosystem-type classification used for disaggregation.
- Whether infrastructure is upgraded or new.
- Method and unit used to quantify planned traffic volume.
- Surface or material-type classification.
- Method used to identify and count completed wildlife-crossing structures or other mitigation methods.
- Denominator and kilometre basis used where crossing structures or mitigation methods are reported per kilometre.
Record-specific limitations
- The extracted evidence specifies infrastructure and mitigation reporting fields rather than a single common fragmentation index or quantified change calculation.
- The extract does not provide a unit for planned traffic volume or a complete denominator specification for mitigation structures beyond an indication of reporting per kilometre.
- Fields use heterogeneous units and should not be converted into a single aggregated fragmentation score without an additional disclosed method.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.