Adjusted Unit Value Transfer as a Tool for Raising Awareness on Ecosystem Services Provided by Constructed Wetlands for Water Pollution Control: An Italian Case Study

Anacleto Rizzo, Giulio Conte and Fabio Masi
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Anacleto Rizzo: IRIDRA SRL, Via La Marmora 51, 50121 Florence, Italy
Giulio Conte: Ambiente Italia SRL, Via Carlo Poerio 39, 20129 Milan, Italy
Fabio Masi: IRIDRA SRL, Via La Marmora 51, 50121 Florence, Italy

IJERPH, 2021, vol. 18, issue 4, 1-15

Abstract: Constructed wetlands (CWs) are nature-based solutions (NBS) for water pollution control that can also be designed to be multipurpose in terms of additional ecosystem services (ESs), such as biodiversity support and social benefits. Awareness about additional ESs of CWs can be raised with value transfer (VT) methods for ESs monetization, in particular, the simplified adjusted unit VT method. A multi-criteria analysis (MCA) was performed to compare grey and green infrastructure alternatives for the management of a combined sewer overflow in the Buccinasco town (Italy), in which the criteria related to ESs were monetized with an adjusted VT method (B£ST software). The results highlighted the potential interest in the implementation of the green infrastructure in a new urban park, due to the activation of additional ESs of interest, such as health and recreational aspects. The results were also confirmed by a sensitivity analysis, which simulated the variation of preferences among different stakeholder groups (e.g., citizens, environmentalists). In conclusion, this work provided a transparent methodology to support decisions regarding green and grey infrastructure, allowing to evaluate additional ESs from the beginning of the decision stage with low cost and efforts.

Keywords: constructed wetland; treatment wetland; ecosystem service; value transfer; nature-based solution; green-blue infrastructure (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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