resource economics Natural resource economics deals with the Supply (economics), supply, Demand (economics), demand, and Resource allocation, allocation of the Earth's natural resources. One main objective of natural resource economics is to better understand th ...

, Hartwick's rule defines the amount of

investment Investment is traditionally defined as the "commitment of resources into something expected to gain value over time". If an investment involves money, then it can be defined as a "commitment of money to receive more money later". From a broade ...

in produced

capital Capital and its variations may refer to: Common uses * Capital city, a municipality of primary status ** Capital region, a metropolitan region containing the capital ** List of national capitals * Capital letter, an upper-case letter Econom ...

(buildings, roads, knowledge stocks, etc.) that is needed to exactly offset declining stocks of

non-renewable resources A non-renewable resource (also called a finite resource) is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption. An example is carbon-based fossil fuels. The original organic mat ...

. This investment is undertaken so that the standard of living does not fall as society moves into the indefinite future. Solow (1974) shows that, given a degree of substitutability between produced capital and natural resources, one way to design a

sustainable consumption Sustainable consumption (sometimes abbreviated to "SC") is the use of products and services in ways that minimizes human impact on the environment, impacts on the environment. Sustainable consumption can be undertaken in such a way that needs are ...

program for an economy is to accumulate produced capital sufficiently rapidly so that the pinch from the shrinking exhaustible resource stock is precisely countered by the services from the enlarged produced capital stock. Hartwick's rule – often abbreviated as "invest resource rents" – requires that a nation invest all rent earned from exhaustible resources currently extracted, where "rent" is defined along paths that maximize returns to owners of the resource stock. The rule extends to the case of many types of capital goods, including a vector of stocks of

natural capital Natural capital is the world's stock of natural resources, which includes geology, soils, air, water and all living organisms. Some natural capital assets provide people with free goods and services, often called ecosystem services. All of t ...

. The difference between total investment in some kinds of capital and total

disinvestment Disinvestment refers to the use of a concerted economic boycott to pressure a government, industry, or company towards a change in policy, or in the case of governments, even regime change. The term was first used in the 1980s, most commonly in ...

in other types of capital has been labelled " genuine savings". Genuine savings has been estimated for many countries by the

World Bank The World Bank is an international financial institution that provides loans and Grant (money), grants to the governments of Least developed countries, low- and Developing country, middle-income countries for the purposes of economic development ...

and other authors (Hamilton and Atkinson, 2006, chapter 6). A positive value for a nation's genuine savings has been linked to the possibility of long-run economic

sustainability Sustainability is a social goal for people to co-exist on Earth over a long period of time. Definitions of this term are disputed and have varied with literature, context, and time. Sustainability usually has three dimensions (or pillars): env ...

Criticism

Ecological economist Clive Spash criticized Hartwick's Rule for its "self-evident lack of realism". It depends on man-made capital for: failing to depreciate, for substituting rather than complementing natural capital, and for being unrelated to rather than produced from natural capital.

Criticism

References

Further reading