Environmental decisions must satisfy a multitude of objectives and the
matching of a plan, policy or project to such objectives is a matter of
both facts and value judgements. Value Functions for Environmental
Management provides a systematic approach to the structuring and
measurement of value judgements, showing how they drive the decision
process and how to make them transparent and effective in support of
complex decisions. The value functions that the book describes provide a
scheme for the exploration of human values and a tool for transforming
them into an analytical model. A clear statement can then be made of the
degree to which a decision has achieved its objectives, and how
conflicting objectives may be addressed.
This does not mean that there is no role for human judgement in the
process. Complexity, often coupled with large information gaps,
necessitates expert judgement, but the values adopted by the experts are
themselves capable of being structured and measured according to the
value function methodology presented here, even if the judgements
themselves are qualitative and tentative. Value models for expert panels
are also presented. The use of the methodology in practice is
illustrated by examples. The book contains an extensive subject index.