Paying for Nature-based Solutions: Do Valencians prefer voluntary or mandatory contributions for forest restoration in Spain?

Sameh Missaoui

https://orcid.org/0000-0002-0880-1270

Spain

Universitat Politècnica de Catalunya image/svg+xml

Centre de Recerca en Economia i Desenvolupament Agroalimentari (CREDA), Parc Mediterrani de la
Tecnologia, Barcelona, Spain.
Universitat Politècnica de Catalunya (UPC), Parc Mediterrani de la Tecnologia, Barcelona, Spain.

Zein Kallas

https://orcid.org/0000-0003-2870-3691

Spain

Universitat Politècnica de Catalunya image/svg+xml

Centre de Recerca en Economia i Desenvolupament Agroalimentari (CREDA), Parc Mediterrani de la
Tecnologia, Barcelona, Spain.
Universitat Politècnica de Catalunya (UPC), Parc Mediterrani de la Tecnologia, Barcelona, Spain.

Antonio del Campo

Spain

Universitat Politècnica de València image/svg+xml

Universitat Politècnica de València (UPV), Camí de Vera, València, Spain.

Javier Pérez

https://orcid.org/0000-0002-3105-8956

Spain

Universitat Politècnica de València image/svg+xml

Universitat Politècnica de València (UPV), Camí de Vera, València, Spain.

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Accepted: 2026-01-08

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Published: 2026-06-26

DOI: https://doi.org/10.7201/earn.2026.01.04
Funding Data

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Keywords:

Choice behavior, discrete choice experiment, payment vehicle, forest restoration

Supporting agencies:

We thank SALAM MED project (Sustainable Approaches to LAnd and water).

Abstract:

The Mediterranean Forest faces increasing pressures from climate change, including wildfires, land abandonment, and biodiversity loss. Nature-based Solutions (NbS) are sustainable strategies that address these challenges. This study examines how voluntary and mandatory payment mechanisms affect citizens’ willingness to pay (WTP) for forest restoration through NbS in Valencia, Spain. A discrete-choice experiment evaluated 603 respondents’ preferences for ecosystem services’ improvement. Results show stronger support for voluntary payments (WTP values of €58.96 for moderate improvements and €113.07 for substantial ones) compared to mandatory payments (€32.48 and €71.97). These findings provide insights for designing socially acceptable and effective forest restoration policies.

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