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The effect of insecure ownership on ordinary investment and natural resource use is examined. Insecure ownership is postulated to depend on the type of government regime in power and the prevalence of political violence or instability. The political determinants of economy-wide investment are estimated from cross-country data, and the results are used to form an index of ownership security. When introduced into empirical models of natural resource use, this index has a significant and quantitatively important effect on the use of forests and petroleum. Contrary to conventional wisdom, ownership risk slows resource use in some circumstances.

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The allocation of a government budget between a public good and transfers is modeled under different systems of government. The relatively even distribution of political power among groups in a democracy favors spending on nonexclusive public goods. The more concentrated pattern of political power in a dictatorship favors spending on transfers targeted to powerful groups. The hypothesis on public good provision is examined using cross-country data on public good provision and empirical indicators of political regime. Dictatorial governments are found to provide public schooling, roads, safe water, public sanitation, and pollution control at levels far below democracies.

Optimal economic use of an aquifer over time is analyzed under conditions of economic growth, inequality of groundwater withdrawal and consumption, and availability of surface water and artificial recharge. The value of an aquifer as a natural water quality treatment facility is derived.