The expansion of private production erodes the quality of commonly owned assets, thereby forcing individuals to rely increasingly on private goods to satisfy their needs. In the face of this deterioration, households increase their work effort and accumulate more capital in order to buy more consumer goods both in the present and in the future. By so doing, each household contributes to an increase in production and thus has a detrimental—though negligible—impact on commonly owned assets. Hence, the economy converges to a long-run equilibrium level of production that is higher than the level associated with the Pareto-efficient path.

Many developing economies are faced with growing populations and deteriorating natural resources. It is often argued that economic growth will arrest these trends via cleaner technology and social change accompanied by reduced birth rates. Two questions arise: (1) What general economic, demographic, and ecological conditions favor this scenario? and (2) What adjustments, technological, demographic, or ecological, are more important in realizing this scenario? I address these questions using a two-sector growth model which includes human demographics and a renewable resource base. Using powerful numerical bifurcation techniques and rescaling arguments, I obtain the following general results. If the regeneration rate of the renewable resource base is slow relative to the rate of economic growth, population overshoot and resource collapse is more likely. Demographic adjustments are more important than technological adjustments in avoiding renewable resource degradation. Several related results are presented that support these general findings.

A dynamic economic model for a biodiversity prospecting contract, between a host country and a pharmaceutical company, is developed and used to explain the structure of existing contracts. The host country's stocks of biodiversity and genetic information are crucial inputs to the production of high-quality samples. Even with compete property rights contracts will be second best; it is not possible to perfectly monitor host-country inputs to the drug discovery process. Contracts vary due to the different degrees of observability of host-country inputs, and incomplete or ineffective property rights.

This paper assesses the strength of the Environmental Kuznets Curve (EKC) which posits an inverted-U relationship between per capital income and pollution. Specifically, answers are sought to the following related questions: (1) How robust is the EKC relationship?; (2) To what extent can the EKC relationship be explained by changing trade patterns as opposed to growth-induced pollution abatement? With regard to question (1), the alleged weaknesses with the EKC are assessed and new EKCs are estimated using more appropriate econometric techniques. Turning to question (2), it is argued that the impact of trade liberalization on the environment will differ from country to country depending on whether or not they have a comparative advantage in pollution-intensive production. In turn, it is argued that this depends on a country's relative factor endowments and/or its relative environmental regulations. EKCs are therefore estimated in a manner that allows the impact of trade liberalization on pollution to depend on these country characteristics. The results indicate that the inverted-U relationship between per capita income and emissions is reasonably robust and little evidence is found to suggest that trade patterns are a significant determinant of the inverted-U shape.

The purpose of this study is to test empirically the hypothesis of the inverted U-shaped relationship between environmental damage from sulfur emissions and economic growth as expressed by GDP. Using a large database of panel data consisting of 73 OECD and non-OECD countries for 31 years (1960–1990) we apply for the first time random coefficients and Arellano-Bond Generalized Method of Moments (A–B GMM) econometric methods. Our findings indicate that the EKC hypothesis is not rejected in the case of the A–B GMM. On the other hand there is no support for an EKC in the case of using a random coefficients model. Our turning points range from $2805–$6230/c. These results are completely different compared to the results derived using the same database and fixed and random effects models.

We consider the international treaties on climate change as self-enforcing agreements. Applying non-cooperative game theory, we interpret the UN framework Convention on Climate Change as a Nash equilibrium outcome of an international abatement game where only domestic abatement is allowed. The Kyoto Protocol is a Nash equilibrium outcome of the game where flexibility mechanisms are introduced. We also show that credit discounting on foreign abatement can Pareto improve the welfare of all countries.

Integrated Pest Management (IPM) is an important component of sustainable agriculture. Farmers who switch from a more capital-intensive pesticide-based pest management strategy to IPM have to substitute capital with labour. The adoption of IPM will therefore depend, among other things, on the opportunity costs of labour. A simple model analyses the trade-off between IPM and current farmers' best practice in developing countries. Modifications of the model include different forms of labour organization in pest management, such as owner operated and short- and long-term labour contracts. The implications are that agricultural policies, environmental policies, and labour market policies can go hand in hand. Unfortunately, this will be more likely at a higher level of original pesticide use and hence a higher level of environmental costs.

A decade has now passed since Daly made a plea for an environmental macroeconomics. Despite an expanding literature on ‘green’ national accounting and the efforts of ecological economists to measure the sustainable net benefits of a growing macroeconomy, it is only recently that Daly's plea has been adequately answered. This has been achieved with the incorporation by Heyes of an ‘environmental equilibrium’ or EE curve into the familiar IS–LM model. However, the IS–LM–EE model proposed by Heyes is incomplete. By extending Heyes' model to include the role of technological progress and the sustainable net benefits of economic activity, this paper shows that conclusions regarding the desirability of expansionary fiscal and monetary policies alter quite radically. Moreover, it sends out a clear message that environmental concerns should be incorporated into macroeconomic models. They should not be solely confined to microeconomics.

This paper draws on a number of recent studies to shed light on several policy issues raised by the impact of environmental policies on technological innovation. First, to what extent does induced innovation raise the overall net benefits to society from environmental policies? Second, how does induced innovation affect the appropriate choice among alternative environmental policy instruments? Third, how does it affect the optimal stringency of environmental regulations? Fourth, should environmental policies be supplemented with additional policies to promote innovation, such as research contracts or prizes for new technologies?

In this paper we study a group of policies aimed at discouraging the use of private transportation during peak hours, both directly and indirectly, by increasing the attractiveness of the only available substitute, the bus. This is done using a choice experiment constructed to find the answer to the following basic question: Given fixed house-to work structures and no working hour flexibility, by how much is the choice of travel mode for commuters to work sensitive to changes in travel time, changes in costs for each mode and other service attributes? This information is then used to identify the most suitable combination of policies dealing with air pollution and congestion in the typical developing country context of metropolitan Costa Rica. We also provide estimates of the value of travel time as a measure of the potential benefits gained from reduced congestion.

Building on the extensive theoretical and empirical work regarding the cost-minimizing properties of economic instruments, this article describes and analyses the Mexican legislation relevant to the treatment/disposal of pig slurry in the state of Yucatán. Using a linear programming model to determine the optimal level of pig production and abatement processes simultaneously, different policy instruments and scenarios are compared. Serious shortcomings associated with the recently introduced command-and-control (CAC) legislation, which establishes concentration-based standards for discharges, are identified. It is shown that it will be extremely difficult and expensive to comply with (cost: US$41.8 million per annum). An alternative mass-based CAC approach, which instead regulates nitrogen applications to land, has compliance costs of US$3.5–US$9.4 million per annum, depending on the strictness of the standard. By contrast, an environmentally equivalent economic instrument approach results in additional cost savings of 22–25 per cent. The results are of relevance to Mexican policy makers, extensionists, researchers, and farmers.

This paper develops and estimates a structural equilibrium pollution model, in which the price and quantity of industrial pollution are jointly determined by the intersection of environmental demand and supply functions. The industrial environmental demand function relates industrial pollution intensity to the local price of pollution, while controlling for characteristics such as sector, scale, and ownership. The local environmental supply function specifies the pollution price imposed by the host community as pollution rises. The model provides a good fit to available data on provincial variations in China's pollution levy, or industrial emissions charge. Our results also suggest that Chinese industry has reduced emissions significantly in response to the levy.

This study investigates the relationship between property rights, resource degradation, and productivity among herders in semi-arid regions of Kenya using survey data. Binary and conditional logit models are used to explain migration, while ordinary least squares and fixed effects models are used to explain productivity. The main findings of the study are that private property right regimes discourage migration with livestock, while private property right regimes and migration increase productivity. The study recommends that if privatization is not feasible, then the existing common rights system should be strengthened through promotion of collective action and limiting of group sizes.

Successful economic growth in Chile based on open market and export strategy, is characterized by a high dependence on natural resources, and by polluting production and consumption patterns. There is an increasing concern about the need to make potentially significant trade-offs between economic growth and environmental improvements. Additionally, policy makers have been reluctant to impose standards that could have regressive consequences, making the poor poorer. Using the CGE model ECOGEM-Chile we study the direct and indirect effects of imposing environmental taxes in Chile for PM-10 as well as taxes on fuels. We analyze the effects over macroeconomic variables as well as sectoral, distributive, and environmental variables. The results show that the most significant impacts are on emissions and sectoral outputs. There are winners and losers. Macroeconomic and distributional impacts are low when low emission reductions are required, however they can be significant if a 50% reduction in emissions are imposed.

This study explores the effects of land tenure institutions on land use and management using household date from cocoa growing areas of Ghana. Various land tenure institutions with different land rights coexist in our sites, such as allocated family land, inherited land, appropriated village land, and land received as gift. While tree planting and the decision to leave land fallow may be affected by land tenure status, there are no significant differences in labor allocation and revenue of both cocoa and food crops among parcels under different land tenure institutions. These results support the hypothesis that management incentives of cocoa fields, but not food crop fields, tend to be equalized due to the incentive-enhancing effects of granting secure land rights after efforts to plant cocoa trees are expended.

This study examines the economics of using crop residues to replace coal burning for energy in China in order to mitigate carbon emissions. About 60 per cent of the available crop residues are now used by rural households in China to replace coal so that the residues are already making a major contribution to controlling China's potential carbon emissions. Using the crop residues more efficiently in village or centralized facilities, shifting to crops with more residues, or growing energy crops can all further reduce carbon emissions. However, accounting for the costs of collecting, transporting, drying and storing crop residues and the foregone crop revenue, the study estimates that the marginal cost to remove more carbon emissions with crop residues will be high.