The food-water-energy nexus and green roofs in Sao Jose dos Campos, Brazil, and Johannesburg, South Africa

Meng, F; Yuan, Q; Bellezoni, RA; de Oliveira, JPA; Hu, Y; Jing, R; Liu, G; Yang, Z; Seto, KC

The food-water-energy nexus and green roofs in Sao Jose dos Campos, Brazil, and Johannesburg, South Africa

Meng, F Yuan, Q Bellezoni, RA de Oliveira, JPA Hu, Y Jing, R Liu, G Yang, Z Seto, KC

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Publisher:: SPRINGERNATURE
Publication Type:: Journal Article
Citation:: NPJ URBAN SUSTAINABILITY, 2023, 3, (1)
Issue Date:: 2023-03-02

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Field	Value	Language
dc.contributor.author	Meng, F
dc.contributor.author	Yuan, Q
dc.contributor.author	Bellezoni, RA
dc.contributor.author	de Oliveira, JPA
dc.contributor.author	Hu, Y
dc.contributor.author	Jing, R
dc.contributor.author	Liu, G
dc.contributor.author	Yang, Z
dc.contributor.author	Seto, KC
dc.date.accessioned	2024-01-15T05:42:44Z
dc.date.available	2024-01-15T05:42:44Z
dc.date.issued	2023-03-02
dc.identifier.citation	NPJ URBAN SUSTAINABILITY, 2023, 3, (1)
dc.identifier.issn	2661-8001
dc.identifier.issn	2661-8001
dc.identifier.uri	http://hdl.handle.net/10453/174476
dc.description.abstract	<jats:title>Abstract</jats:title><jats:p>Green roofs affect the urban food-water-energy nexus and have the potential to contribute to sustainability. Here we developed a generalizable methodology and framework for data-sparse cities to analyze the food-water-energy nexus of green roofs. Our framework integrates the environmental costs and benefits of green roofs with food-water-energy systems and makes it possible to trace energy-water-carbon footprints across city boundaries. Testing the framework in São José dos Campos (SJC), Brazil and Johannesburg, South Africa, we found that green roofs are essentially carbon neutral and net energy consumers from a life cycle perspective. SJC is a net water beneficiary while Johannesburg is a net water consumer. Rainwater utilization could save irrigated water, but requires 1.2 times more energy consumption. Our results show that SJC and Johannesburg could direct their green roof development from local food production and energy saving, respectively and highlight opportunities for green roof practices in cities.</jats:p>
dc.language	English
dc.publisher	SPRINGERNATURE
dc.relation.ispartof	NPJ URBAN SUSTAINABILITY
dc.relation.isbasedon	10.1038/s42949-023-00091-3
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	3304 Urban and regional planning
dc.title	The food-water-energy nexus and green roofs in Sao Jose dos Campos, Brazil, and Johannesburg, South Africa
dc.type	Journal Article
utslib.citation.volume	3
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Information, Systems and Modelling
utslib.copyright.status	open_access	*
dc.date.updated	2024-01-15T05:42:43Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	3
utslib.citation.issue	1

Abstract:

AbstractGreen roofs affect the urban food-water-energy nexus and have the potential to contribute to sustainability. Here we developed a generalizable methodology and framework for data-sparse cities to analyze the food-water-energy nexus of green roofs. Our framework integrates the environmental costs and benefits of green roofs with food-water-energy systems and makes it possible to trace energy-water-carbon footprints across city boundaries. Testing the framework in São José dos Campos (SJC), Brazil and Johannesburg, South Africa, we found that green roofs are essentially carbon neutral and net energy consumers from a life cycle perspective. SJC is a net water beneficiary while Johannesburg is a net water consumer. Rainwater utilization could save irrigated water, but requires 1.2 times more energy consumption. Our results show that SJC and Johannesburg could direct their green roof development from local food production and energy saving, respectively and highlight opportunities for green roof practices in cities.

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http://hdl.handle.net/10453/174476