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From invisible to investable: turning nature into an asset class

Summary

Natural capital—soils, water, biodiversity, and ecosystems—underpin $44 trillion of the global economy. Yet without accounting, its value remains invisible. By quantifying natural capital, we can make it measurable, investable, and tradable—unlocking markets, reducing risk, and rewarding landholders for the stewardship that sustains productivity and resilience.

Forest of trees

7 min read

Authors: Nick Marsh

What is natural capital?

Natural capital is the stock of natural assets including soil, water, land, air, and all living things from which we derive environmental, economic, social, and cultural value. Just as financial capital generates returns, natural capital generates ecosystem services: fertile soils grow food, rivers provide clean water, forests store carbon, and biodiversity underpins resilience.

For too long, these services have been invisible in economic decision-making. The result? Depletion without recognition, risk without measurement, and missed opportunities for investment.

The global dollar value of nature

The scale of value is enormous:

  • The World Economic Forum estimates that $44 trillion of economic value, around half of global GDP, depends on nature and its services.
  • Ecosystem services such as climate regulation, grazed biomass, and coastal protection contribute billions annually in Australia alone (ABS National ecosystem accounts 2020-21).
  • Loss of natural capital is not just an environmental concern, it poses systemic financial risk that threatens supply chains, markets, and livelihoods.

Why accounting and reporting matter

Quantifying natural capital is the essential first step. Without numbers, natural capital remains invisible. With numbers, it becomes accountable, reportable, and investable.

Natural capital accounting:

  • Makes value visible by showing the contribution of soils, water, biodiversity, and ecosystems to economic wellbeing.
  • Supports reporting by aligning farm and regional outcomes with international and national reporting frameworks (e.g. ESG, TNFD, GBF, SDG, and AASF frameworks).
  • Builds confidence by allowing investors, governments, and businesses the assurance that nature repair investments have delivered quantifiable results.

From accounting to markets

The act of quantifying natural capital does more than support reporting, it lays the foundation for markets.

When landholders can demonstrate improvements in soil carbon, water quality, or biodiversity through credible measures, these outcomes can be:

  • Verified by reducing uncertainty and building trust.
  • Standardised by ensuring comparability across projects and regions.
  • Traded by enabling the creation of natural capital assets and new investment mechanisms.

This shift transforms natural capital from an “externality” into an asset class—one that attracts finance, rewards good land stewardship, and drives lasting environmental and social outcomes.

Case example: biodiversity as a market asset

Biodiversity has often been seen as too complex to measure, but that perception is changing. Biodiversity credit schemes are emerging in Australia and globally, rewarding landholders who protect or restore habitat.

Here’s how it works:

  • Measurement
    On-ground biodiversity is assessed through indicators such as habitat condition, species richness, or connectivity.
  • Valuation
    Improvements are quantified and converted into biodiversity credits.
  • Market
    Credits can be purchased by developers, corporations, or governments to meet biodiversity offset requirements or voluntary commitments.

For example, the UK’s new Biodiversity Net Gain policy requires developers to leave habitats in a measurably better state. In response, landholders who restore or protect biodiversity can generate credits and sell them into a regulated market. Similar approaches are being piloted in Australia.

The key enabler is credible measurement and accounting, without it, biodiversity remains an abstract concept. With it, biodiversity becomes a recognised, tradable outcome that drives new investment into landscapes.

Why this matters

  • Landholders gain recognition, and potential revenue, for sustainable management.
  • Investors access a new market of credible, nature-positive projects.
  • Communities and governments see better resource targeting, with funds flowing to actions that deliver measurable impact.
  • The environment and services provided are valued and protected.
  • Supports Australia’s commitment to international climate goals.

Looking ahead

The value of natural capital is vast, but value without quantification cannot attract investment. By accounting for natural capital, we create the transparency and confidence needed to unlock new markets, scale up investment, and reward those who care for the land.

Natural capital isn’t just priceless. It’s valuable—and measurable.

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