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Titel: The role of interdisciplinarity in evaluating the sustainability of urban rooftop agriculture
Autor(en): Sanyé-Mengual, EstherOliver-Solà, JordiMontero, Juan IgnacioRieradevall, Joan
Klassifikation (DDC): 630 - Landwirtschaft, Veterinärmedizin (Agriculture)
Erscheinungsdatum: 20-Jun-2017
Herausgeber: Department of Organic Food Quality and Food Culture at the University of Kassel, Germany and Federation of German Scientists (VDW)
Zitierform: In: Future of Food: Journal on Food, Agriculture and Society. Witzenhausen : University of Kassel, Department of Organic Food Quality and Food Culture. - Vol. 5, No. 1 (2017), S. 46-58
Zusammenfassung: Recently, urban agriculture (UA) has expanded throughout cities of the developed world as a response to social injustices and environmental gaps of the globalized food system (including food security, economic opportunities and community building). Due to the limiting factors of the urban environment (e.g., land availability), UA often occupies the roofs of buildings as vacant space to further develop local food production through so-called urban rooftop agriculture (URA). This paper presents an interdisciplinary scheme employed to evaluate the sustainability of URA as a complex system while investigating the potential of URA in quantitative and qualitative terms as well as the environmental and economic impact of different types of URA. The implementation of URA, as a specific form of UA, in a Mediterranean context was assessed using Barcelona, Spain and Bologna, Italy as case studies. Interdisciplinary methods from four disciplines were combined: (a) qualitative research to identify the potential of URA by evaluating the perceptions of different stakeholders; (b) geographic information systems (GIS), to quantify the potential area for implementing URA; (c) life cycle assessment (LCA), to quantify the environmental impacts of URA forms; and (d) life cycle costing (LCC), to quantify the economic costs of URA forms. According to the results, a combined GIS-LCA tool is useful in evaluating the implementation of URA and the consequent environmental benefits at the city scale. Stakeholders highlighted the contribution of URA to the three dimensions of sustainability, as well as the potential risks tied to its complexity and novelty. Comparing different urban spaces, the implementation of URA is more feasible in the short-term on the roofs of retail parks than industrial ones. At the system scale, soil cultivation with compost in open-air rooftop gardens resulted in the most eco-efficient cultivation option. Open-air rooftop gardens had lower environmental impacts and economic costs than rooftop greenhouses. LCA and LCC results outlined the relevance of decisions in the design phase regarding cultivation technique, crop choice and management.
URI: urn:nbn:de:hebis:34-2017042652446
ISSN: 2197-411X
Sammlung(en):Vol 5, No 1 (2017)

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