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The National Academy of Engineering was established in 1964, under the charter of the National Academy of Sciences, as a parallel organization of outstanding engineers. It is autonomous in its administration and in the selection of its members, sharing with the National Academy of Sciences the responsibility for advising the federal government. The National Academy of Engineering also sponsors engineering programs aimed at meeting national needs, encourages education and research, and recognizes the superior achievements of engineers. Dr. Wm. A. Wulf is president of the National Academy of Engineering.
This volume has been reviewed by a group other than the authors according to procedures approved by a National Academy of Engineering report review process. The interpretations and conclusions expressed in the papers are those of the authors and are not presented as the views of the council, officers, or staff of the National Academy of Engineering.
Funding for the activity that led to this publication was provided by the Andrew W. Mellon Foundation and the National Academy of Engineering Technology Agenda Program.
Library of Congress Cataloging-in-Publication Data
Measures of environmental performance and ecosystem condition / edited by Peter C. Schulze / National Academy of Engineering.
Includes bibliographical references and index.
1. Environmental indicators. 2. Environmental management—Evaluation. 3. Environmental monitoring—Methodology. 4. Nature—Influence of human beings on—Evaluation. I. Schulze, Peter C. II. National Academy of Engineering.
GE140 .M43 1998
Copyright 1999 by the National Academy of Sciences. All rights reserved.
Cover: George Inness. The Lackawanna Valley (detail), 1856. Oil on canvas. National Gallery of Art. Gift of Mrs. Huttleston Rogers.
Printed in the United States of America