Economic valuation can help improve decisions about protecting the environment . By inputing values to unpriced goods, it can make public choices more cost-efficient and thus allow limited public income to be optimally spent.

In this pioneering study, Krutilla and Fisher put the amenity resources of natural environments into an analytical framework comparable to that for the extractive resources. The models and theoretical background of their techniques are illustrated by case studies which include the controversial Hells Canyon dam, the Mineral King ski resort, and the Trans-Alaska pipeline. The authors point out that resource development activities undertaken on public lands often receive financial advantages---preferential tax treatment, subsidized capital, and access to public resources---that are not taken into account in the costs of the project. True evaluation of the costs and benefits of a development project often tips the balance in favor of preserving an area in a natural state.

Studienarbeit aus dem Jahr 2013 im Fachbereich VWL - Umweltökonomie, , Veranstaltung: Environmental Economics, Sprache: Deutsch, Abstract: Monetary valuation of environmental goods has by now become the subject of numerous economic books and articles. Interest in the topic seems to be increasing in the economics profession, and theoretical insight, methodological improvements and the numbers of empirical findings are expanding rapidly. The aim of such valuation is usually to incorporate environmental concerns into a cost-benefit analysis. Another purpose is to construct environmentally adjusted national income measures Environmental value estimates have also been combined with macroeconomic models, e.g. to estimate welfare effects of a climate treaty Further, estimated willingness to pay is now accepted in the USA as a basis for legal compensation claims for damages to natural resources caused by spill of hazardous substances (Nyborg, 1996) Valuation can simply be defined “as an attempt to put monetary values or to environmental goods and services or natural resources”. It is a key exercise in economic analysis and its results provide important information about values of environmental goods and services. This information can be used to influence decisions about wise use and conservation of forests and other ecosystems. The basic aim of valuation is to determine people’s preferences by gauging how much they are willing to pay (WTP) for given benefits or certain environmental attributes e.g. keep a forest ecosystem intact. In other words, valuation also tries to gauge how much worse off they would consider themselves to be as a result of changes in the state of the environment such as degradation of a forest. Economic valuation never refers to a stock, but only the change in a stock. If one speaks of the economic value of biodiversity, then one always means the economic value of a change of biodiversity. It is not a question of determining the ‘true’ value of biodiversity or ecosystems but valuing changes and comparing them with their alternatives, e.g. with a golf course vs without a golf course. Thus it is non-sense to ask “how much are the African National Parks worth?” A plausible question in this case would be: ‘WWF has proposed a new policy to prevent the huge losses of wildlife species from African National Parks. What is the monetary value of the benefits of this policy (i.e., the economic damages avoided)? Economists thus stress that the valuation should focus on changes rather than levels of biodiversity or ecosystem. [...]

Nutrient recycling, habitat for plants and animals, flood control, and water supply are among the many beneficial services provided by aquatic ecosystems. In making decisions about human activities, such as draining a wetland for a housing development, it is essential to consider both the value of the development and the value of the ecosystem services that could be lost. Despite a growing recognition of the importance of ecosystem services, their value is often overlooked in environmental decision-making. This report identifies methods for assigning economic value to ecosystem servicesâ€"even intangible onesâ€"and calls for greater collaboration between ecologists and economists in such efforts.

"The international community has committed itself to achieve, by 2010, a significant reduction of the current rate of biodiversity loss at the global, regional, and national levels. Yet, despite growing awareness, and major efforts in all countries, the latest evidence indicates that biodiversity continues to be lost at a terrifying pace, resulting in what some call the greatest mass extinction since dinosaurs roamed the planet, 65 million years ago. A range of methods have been developed to value ecosystems, and the services they provide, as well as the costs of conservation. The methods available are increasingly sensitive, and robust, but they are often incorrectly used. One reason is poor understanding of the purposes of valuation and what questions it can, or cannot, answer. As a result, decision makers may get misleading guidance on the value of ecosystems, and their conservation. In this context, the Bank, IUCN-The World Conservation Union, and the Nature Conservancy have worked together to clarify the aims and uses of economic valuation, focusing on the types of questions that valuation can answer, and the type of valuation that is best suited to each purpose. How Much is an Ecosystem Worth? is the result of that cooperation. It aims to provide guidance on how economic valuation can be used to address specific, policy-relevant questions about nature conservation."

The Economic Valuation of the Environment and Public Policy fills an important gap in economic literature by providing a comprehensive account of hedonic pricing and its use in valuation of environmental amenities. . . . It should be invaluable to anyone contemplating undertaking a hedonic pricing study of an environmental amenity, as it contains practical advice on a myriad of modeling issues. Likewise, it should be of value to anyone wishing to thoroughly understand and critique the results of a hedonic pricing exercise. Richard T. Carson, Environment I appreciate this book s blend between theory and applications. It contains an informative review of the development of the theory of the hedonic price technique as well as an insightful analysis of the econometrics of the approach. Noboru Hidano has a gift for breaking down the difficult theoretical and econometric problems into simple and manageable proportions. Per-Olov Johansson, Stockholm School of Economics, Sweden The importance of the hedonic valuation approach in public policy evaluation and environmental value estimation is now widely accepted. This book is especially designed to illustrate the basic assumptions of the hedonic approach and highlight the strengths and weaknesses associated with it. Combining rigorous theoretical analysis, detailed empirical studies and an extensive history of hedonic valuation, the book is both a good introductory text to the field and a precise yet comprehensive aid for professionals and practitioners alike. Some of the book s special features include: a comprehensive explanation of the basic theorem extensive discussions on the utility of the approach in the evaluation of both small-scale and large-scale projects detailed explanations of how the approach can best be applied to cost benefit analysis an examination of the applicability of the hedonic method by comparing estimated values for various environmental and public services an illustration of public policy and environmental valuation using readily-understood examples. The Economic Valuation of the Environment and Public Policy will be essential reading for students of environmental and ecological economics, environmental science and technology specialists, and all those who are interested in the evaluation of public sector projects.