GRI and TNFD: How Impact Reporting Connects with Nature-Related Risk Disclosure

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This Knowledge Card gives a direct answer, explains the technical logic, shows how to apply it, identifies the evidence needed, and provides a controlled publishing package. Requirements, recommendations, implementation practice and expert interpretation are kept distinct.

Nature teams are often asked to prepare a GRI biodiversity disclosure, a TNFD-aligned report, lender responses and internal risk analysis from the same small pool of location and supplier data. If each request is treated as a separate project, teams repeatedly collect coordinates, land-use information, water dependencies, ecosystem condition data and policy evidence. If the projects are merged too aggressively, the organisation may imply that impact significance under GRI is identical to nature-related risk materiality under TNFD.

The practical solution is neither duplication nor equivalence. It is controlled interoperability: establish a common evidence architecture, document the GRI impact conclusion, document the TNFD dependency–impact–risk–opportunity pathway, and disclose the residual differences. This approach also improves internal decision-making because impact owners, risk owners, finance and nature specialists work from a reconciled view of activities and locations.

The joint GRI–TNFD interoperability mapping published in 2024 identifies extensive alignment. It also makes clear why mapping must be applied with judgement: all GRI 101 disclosures are reflected in the TNFD recommendations, but some TNFD requirements concern the identification and assessment of risks and opportunities rather than impact reporting alone.

GRI asks the organisation to report on its most significant impacts on the economy, environment and people, including human rights. In the biodiversity context, the core question is how the organisation’s activities, products, services and business relationships affect biodiversity, where those effects occur, how significant they are, and how the organisation manages them.

TNFD uses the connected language of dependencies, impacts, risks and opportunities — often shortened to DIROs. A dependency exists where the organisation relies on ecosystem services, such as water regulation, soil quality, pollination or flood protection. An impact is a change in the state of nature caused, contributed to or directly linked through the organisation’s activities and relationships. Risks and opportunities arise when dependencies and impacts interact with the organisation’s strategy, operations, markets, financing, reputation, regulation or other value drivers.

GRI 101: Biodiversity 2024 provides a particularly useful foundation because it moves biodiversity reporting towards activity-, value-chain- and location-specific evidence. Its disclosures can populate significant parts of a TNFD assessment, provided the organisation does not stop at the impact disclosure.

The joint mapping also reduces terminology friction. GRI 101 uses TNFD definitions for ecologically sensitive areas and refers to the Locate and Evaluate phases of LEAP. This does not make the standards identical; it makes it easier to use consistent location and ecosystem evidence.

Figure 1. A shared evidence pool can support two different reporting lenses. Reuse must preserve framework-specific materiality and disclosure decisions.

Nature-related issues are highly location-dependent. A water-intensive plant may have modest effects in one catchment and severe effects in another. A supplier’s land conversion may intersect a Key Biodiversity Area even when the same commodity is sourced elsewhere without the same ecological sensitivity. Organisation-level totals can therefore obscure both significant impacts and business dependencies.

A combined location register should normally connect each site, supplier area or product-sourcing geography to: the activity conducted; geographic coordinates or an appropriate spatial boundary; ecosystem type and condition; proximity to ecologically sensitive areas; direct drivers; affected communities and other beneficiaries; ecosystem services relied upon; data source and date; confidence and limitations; and the GRI and TNFD decisions supported by the record.

A single project can support both systems when it is designed around shared evidence and separate decisions. The sequence below is LRA implementation practice, not a mandatory process prescribed by either framework.

1. Set the governance and user needs. Confirm whether the output is a GRI report, a TNFD-aligned disclosure, internal risk analysis, lender response or a combined package. Assign impact, risk, finance, nature-data and approval roles.

2. Define the organisational and value-chain scope. Map activities, products, services, sites, suppliers and downstream relationships, including relevant time horizons.

3. Locate nature interfaces. Build the site and sourcing register, identify ecosystems and sensitive areas, and record data precision and limitations.

4. Evaluate dependencies and impacts. Identify ecosystem services relied upon, direct drivers, changes to nature, affected people and plausible impact pathways.

5. Apply the GRI significance test. Assess actual and potential impacts, determine the material topic and document the evidence, stakeholder input, thresholds and governance approval.

6. Translate dependencies and impacts into TNFD risks and opportunities. Identify transmission channels, existing controls, time horizons, scenarios and potential financial effects where relevant.

7. Prepare framework-specific outputs. Draft GRI 101 disclosures and TNFD recommended disclosures, then maintain a residual-gap register rather than using a one-to-one substitution assumption.

8. Reconcile, approve and monitor. Test consistency across statements, metrics and locations; retain the evidence trail; and update the assessment as conditions or data change.

Figure 2. A practical combined workflow. LEAP can guide the Locate, Evaluate, Assess and Prepare work, while GRI and TNFD conclusions remain separately controlled.

Reuse is strongest at the factual and evidence level. It becomes weaker as the organisation moves from evidence to judgement and from judgement to a reporting conclusion. The same coordinate is usually the same coordinate; the same habitat-condition model can often be reused; the materiality conclusion and disclosure consequence may still differ.

A broad stakeholder may want to understand the organisation’s accountability for ecosystem degradation and effects on local communities. A lender or investor may additionally ask how loss of water regulation, pollination or regulatory access could affect production, costs, asset values or strategy. The underlying story is connected, but the emphasis and evidence are not identical.

GRI normally needs a clear account of the significant impact, its location or value-chain connection, the organisation’s involvement and management response.

TNFD normally needs the dependency–impact–risk–opportunity chain, including governance, strategy, risk-management integration, metrics and targets, and material locations.

Impact evidence should not be reduced to a financial-risk proxy. Severe harm can be significant even where financial consequences are uncertain or long term.

Financial estimates should not be presented as ecological facts. Assumptions, models, time horizons and uncertainty need their own evidence and review.

A combined report should tell readers which materiality approach has been applied and avoid using “aligned” or “complete” claims without a disclosure-by-disclosure check.

In this GRI–TNFD workflow, a priority location is a site or value-chain area selected for focused analysis because its activities, ecosystem context, dependencies, impacts or exposure meet the organisation’s stated priority criteria. Selection should consider location-specific evidence, including proximity to ecologically sensitive areas, and record the datasets, spatial precision, exclusions and limitations used.