Perceptions on barriers and opportunities for integrating urban agri-green roofs: A European Mediterranean compact city case

Perla Liliana Zambrano, David Pons-Gumí, Susana Toboso-Chavero, Felipe Agustín Parada Molina, Alejandro Josa, Xavier Gabarrell Durany*, Joan Rieradevall Pons

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

The main objective of this study is to analyze the perceived barriers and opportunities with regard to the implementation of urban agri-green roofs (UAGR) in cities. The case study was conducted in Barcelona, a Mediterranean compact city. The World Café method was used in this work. Five categories of barriers and opportunities were discussed (social, environmental, legal/administrative, technological/architectural, and economic) by interdisciplinary stakeholders. A total of 129 barriers and opportunities were identified. The main barriers identified were as follows: the lack of information and social cohesion regarding UAGR projects; the Mediterranean climate; the lack of specific regulations and protocols; the initial investment; and the pre-condition of the roof and its load bearing capacity. The main opportunities were social cohesion; improved life quality; new specific regulations; the profits derived from UAGR projects; and aesthetic improvement. The UAGR's scale of impact results showed a homogeneous distribution between “building” and “city”, while the “global” scale remains residual. Regarding the stage of the UAGR life cycle at which barriers and opportunities emerge, the results highlight how most opportunities appear during the “use” stage of the roof, whereas barriers do so during the “project” stage.

Original languageEnglish
Article number103196
Number of pages15
JournalCities : the international journal of urban policy and planning
Volume114
DOIs
Publication statusPublished - 1 Jul 2021

Keywords

  • Building
  • Rooftop agriculture
  • Stakeholders perception
  • World Café

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