Nature-based Solutions: What Makes Them Credible, and Why It Matters for Hong Kong

Nature-based solutions (NbS) are actions to protect, sustainably manage, or restore natural and modified ecosystems to address societal challenges while supporting human well-being. That definition, from IUCN, is deliberately broad — and that breadth is precisely why the IUCN Global Standard matters. It is a framework for designing, verifying, and scaling NbS, not a label to be applied to any project that happens to involve nature.

Eight criteria, equal in status

The second edition of the Global Standard retains eight criteria, now expressed through 27 indicators; the first edition had 28. The criteria carry equal status and together cover what environmentally appropriate, socially beneficial, and economically viable NbS require. For practitioners, the practical implication is that no single criterion can be traded away for another — strong ecological design does not compensate for weak governance, and community support does not excuse unclear economics.

What credibility actually requires

Several elements do the heavy lifting:

• Societal purpose. A credible intervention identifies and documents the societal challenge it addresses, and prioritises the concerns of affected stakeholders and rights-holders.
• Ecological integrity. Credibility requires understanding ecosystem condition and the drivers of degradation and biodiversity loss. Biodiversity and ecosystem integrity are central considerations, not optional co-benefits.
• Durability and finance. The standard calls for financial feasibility and economic justification, including identifying financial mechanisms that support long-term viability.
• Governance and safeguards. Inclusive, transparent, and empowering governance is expected, alongside participation by affected stakeholders and rights-holders and safeguards addressing intended and unintended impacts.
• Adaptation and learning. NbS should be managed adaptively, with monitoring, evaluation, and changes to management where needed — and lessons should inform wider implementation.

Why this reads like an accounting problem

Much of the standard will feel familiar to anyone working with IFRS or HKFRS financial reporting and the International Valuation Standards. Financial feasibility, economic justification, identified funding mechanisms, monitoring, and adaptation are the same disciplines that underpin reliable measurement and disclosure. The parallel is not decorative: a project that cannot articulate its cash flows, its maintenance obligations, or how performance will be tracked is difficult to defend in an investment committee, a valuation, or an assurance process.

Hong Kong and the region: adapt, don't transplant

The standard is explicit that implementation should reflect local, national, and regional social, economic, and regulatory contexts. For Hong Kong projects, that points to assessing local ecosystem conditions, affected communities, delivery arrangements, and applicable policy context — rather than transferring a project model unchanged from another jurisdiction. A restored coastal habitat in one setting may face entirely different tenure, drainage, or stakeholder dynamics in another.

The disclosure horizon

Reporting expectations are moving. In November 2025, the ISSB said it would develop incremental nature-related disclosure requirements, drawing on TNFD recommendations and the LEAP approach, targeting an exposure draft by CBD COP17 in October 2026. It also noted that TNFD guidance could help entities prepare disclosures under IFRS S1 while that work proceeds. For organisations already building NbS into their operations, the direction of travel is clear: nature is becoming a reporting matter, not only a sustainability narrative.

Where to start

The Foundation's NbS Hub is designed as a practical entry point for capital providers, project sponsors, and advisers working through these questions. The full IUCN Global Standard and its guidance remain the authoritative references, and the ISSB's November 2025 statement sets out the disclosure timeline. Credible NbS is less about ambition than about evidence, governance, and the willingness to adapt when monitoring says so.