Relative Price Changes of Ecosystem Services: Evidence from Germany

Jonas Heckenhahn () and Moritz Drupp
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Jonas Heckenhahn: Ruhr University Bochum

Environmental & Resource Economics, 2024, vol. 87, issue 3, No 9, 833-880

Abstract: Abstract Discounting future costs and benefits is a crucial yet contentious practice in the appraisal of long-term public projects with environmental consequences. The standard approach typically neglects that ecosystem services are not easily substitutable with market goods and often exhibit considerably lower growth rates. Theory has shown that we should either apply differentiated discount rates, such as a lower environmental discount rate, or account for increases in relative scarcity by uplifting environmental values. Some governments already integrate this into their guidance, but empirical evidence is scarce. We provide first comprehensive country-specific evidence, taking Germany as a case study. We estimate growth rates of 15 ecosystem services and the degree of limited substitutability based on a meta-analysis of 36 willingness to pay studies in Germany. We find that the relative price of ecosystem services has increased by more than four percent per year in recent decades. Heterogeneity analyses suggest that relative price changes are most substantial for regulating ecosystem services. Our findings underscore the importance of considering relative price adjustments in governmental project appraisal and environmental-economic accounting.

Keywords: Cost–benefit analysis; Discounting; Ecosystem services; Growth; Substitutability; Relative prices; Willingness to pay (search for similar items in EconPapers)
JEL-codes: D61 H43 Q51 Q54 Q58 (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s10640-023-00838-7

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