Environmental economics addresses the issues that arise on the boundaries between economic systems and natural systems, such as pollution and natural resource de pletion and degradation. Like any other branch of applied economics, it has drawn its tools and techniques from the wide range already available in economics gener ally, selecting, adapting and extending these to meet its own particular requirements in its own particular context. Here, as elsewhere in economics, public policy analy sis requires quantitative assessments of the economic impact of different policy choices. Perhaps the most distinctive contribution of environmental economics has been the development of techniques for the economic valuation of environmental goods and services in the absence of markets for such goods and services, or in the presence of markets that are at best imperfect or incomplete. Nevertheless policy analysis still relies on one or another of three broad groups of methods used in eco nomics generally. One is project appraisal, which at the micro level provides an evaluation ofthe costs and benefits ofinvestment options to inform the choice among them, while at the macro level policy analysis rests either on computable general equilibrium (CGE) models or on economy-wide macroeconometric models. All models are simplifications, designed to focus attention on the important fea tures ofthe problem at hand, and neglecting other features that might for a different problem assume greater importance.

Some recent trends in macroeconomic theory and practice; A critique of Keynesian macroeconomics; The basic neoclassical model; Extension of the neoclassical model; Long term policy analysis; The rational expectations hypothesis; Macroeconomic policy and rational expectations; Theory and practice.

This supplement presents the analytical frameworks underlying the IMF’s staff’s enhanced policy analysis and advice to resource-rich developing countries (RRDCs). The proposed macro-fiscal models, which are applied to selected country or regional cases, are aimed at addressing questions regarding how to deal with resource revenue uncertainty and how to scale up spending within relevant frameworks that ensure fiscal and external sustainability while addressing absorptive capacity constraints. The country applications confirm the importance attached by both IMF staff and country authorities of using the appropriate macro-fiscal frameworks to address the specific challenges faced by RRDCs.

This paper provides new evidence of the macroeconomic effects of public investment in advanced economies. Using public investment forecast errors to identify the causal effect of government investment in a sample of 17 OECD economies since 1985 and model simulations, the paper finds that increased public investment raises output, both in the short term and in the long term, crowds in private investment, and reduces unemployment. Several factors shape the macroeconomic effects of public investment. When there is economic slack and monetary accommodation, demand effects are stronger, and the public-debt-to-GDP ratio may actually decline. Public investment is also more effective in boosting output in countries with higher public investment efficiency and when it is financed by issuing debt.

World Bank Discussion Paper No. 329. Tests the hypothesis that appropriate joint management of transboundary fish stocks can help avoid overexploitation of these resources while increasing rents and benefits. Focusing on the industrial pelagic fisheries of northern Chile and southern Peru, the authors present various quantitative models for identifying industry characteristics and calculating benefits.

This study provides a systematic approach to the key dimensions of analysis in support of policy-based operations. Concepts presented include understanding the macroeconomic context of sector policy reforms using a macro-meso-micro perspective, using dimensions of sector diagnosis to identify sequential binding constraints to development in a prevailing policy and institutional environment, and assessing the effects of policy change. Also included are examples of measuring the costs of policy change and lessons from incorporating policy change assessments into policy operation design.

What is the effect of a new infrastructure on the well-being of a local community? Is a tax reform desirable? Does the privatization of a telecommunication provider increase social welfare? To answer these questions governments and their policy advisors should have in mind an operative definition of social welfare, and cannot rely on simple official statistics, such as GDP. The price we observe are often misleading as welfare signals, and costs and benefits for the society should be based on ‘shadow prices’, revealing the social opportunity costs of goods and of changes of the world. This book explains how to apply these welfare economics ideas to the real world. After a theoretical discussion of the concept of social welfare, a critical analysis of the traditional doctrine of welfare economics embodied in the Two Fundamental Theorems, and a presentation of social cost-benefit analysis, the book introduce the readers to an applied framework. This includes the empirical estimation of shadow prices of goods, of the social cost of labour and capital, the assessment of risk. This book also includes the state of the art of international experience with CBA, including ex-post evaluation of major projects, economic rates of return in different sectors, and a case study on privatisation, is presented. This book offers a unique and original blend of theory, empirics and experience. The theoretical discussion clarifies why shadow prices are not virtual market equilibrium prices, as they arise as the solution of a planning problem, often with governments and economic agents constrained in their information and powers. The empirical chapters show how to compute proxies of the shadow prices in simple ways. The experience chapters draw from first hand research, gained by the Author and his collaborators over many years of advisory work for the European Commission and other international and national institutions.

This book is about joint implementation. It addresses legal, economic and institutional questions which should be taken into account in setting up joint implementation projects and in developing criteria for joint implementation under the UN Framework Convention on Climate Change (FCCC). First, however, before going into any detail, we shall briefly sketch the background, quoting Daniel Bodansky: 'Each year, mankind injects approximately six billion tons of carbon into the atmosphere from the burning of fossil fuels, as well as a substantial (although still uncertain) amount from deforestation. Since the advent of the industrial revolution, atmospheric concentrations of carbon dioxide have risen by more than twenty five percent, from 280 to more than 350 parts per million. Scientists estimate that if current patterns of emissions continue unchecked, the increasing concentrations of carbon dioxide, together with parallel increases in other trace gases such as methane and nitrous oxide, will cause an average global warming in the range of 0. 2 to 0. 5 °C per decade, or 2 to 5 oc by the end of the next century. Such a temperature rise, more rapid than at any time in human history, could have severe effects on coastal areas, agriculture, forests 1 and human health. ' In recent years there has been growing awareness of the extent of the damage done to the world's environment through unsustainable patterns of development.