Nature-based solutions: High on greenery - the potential of green roofs

High on Greenery. The Potential of Green Roofs for Supporting Accelerated Climate Transition Goals in Järfalla Municipality

By Rafael Tanada and Tobias Willbrand. 

This qualitative research aims to investigate the potential of green roofs as a nature-based solution to support the climate transition of Järfälla municipality. Stemming from an initial municipality-led green roof project, the feasibility of further expansion of green roofs to residential developments is studied through triangulation of data from stakeholder interviews, citizen surveys, and literature review. Interviews included in-depth dialogue with one local green roof consultant, one municipality green roof project manager, and one green roof project stakeholder. With the aim of identifying important social-environmental considerations for expanding green infrastructure (GI) in the municipality, one exploratory survey to determine direct knowledge and opinions on green roofs, GI, and ecosystem services, as well as a second survey to measure environmental values, perceptions, and attitudes of respondents towards green roofs and GI, in general, was conducted. A combined total of 80 survey responded from the two surveys were gathered. Additionally, 3-question street interviews with six citizens in Järfälla were also conducted to determine direct perspectives and opinions from a randomized sample. Findings have shown a significant potential of ecosystem benefits for further green roof expansion in Järfälla municipality. Evident gaps in citizen awareness and knowledge on green roofs may potentially be solved through more effective, diverse, and strategic communication between the municipality and citizens. Additionally, the use of artificial intelligence may potentially be an aid, rather a main driver, for strategic and inclusive decision-making in the municipality’s GI project development.

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