Produção Nacional
Revisado por pares
Energy and material flows of megacities
2015; National Academy of Sciences; Volume: 112; Issue: 19 Linguagem: Inglês
10.1073/pnas.1504315112
ISSN1091-6490
AutoresChristopher Kennedy, Iain D. Stewart, Angelo Facchini, Igor Cersosimo, Renata Mele, Bin Chen, Mariko Uda, Arun Kansal, Anthony S.F. Chiu, Kwi-gon Kim, Carolina Burle Schmidt Dubeux, Emílio Lèbre La Rovere, Bruno Cunha, Stéphanie Pincetl, James Keirstead, Sabine Barles, Semerdanta Pusaka, Juniatí Gunawan, Michael Adegbile, M. Nazariha, Shamsul Hoque, Peter J. Marcotullio, Florencia González Otharán, Tarek Genena, Nadine Ibrahim, Rizwan U. Farooqui, Gemma Cervantes, Ahmet Duran Şahin,
Tópico(s)Land Use and Ecosystem Services
ResumoSignificance Our quantification of energy and material flows for the world’s 27 megacities is a major undertaking, not previously achieved. The sheer magnitude of these flows (e.g., 9% of global electricity, 10% of gasoline; 13% of solid waste) shows the importance of megacities in addressing global environmental challenges. In aggregate the resource flows through megacities are consistent with scaling laws for cities. Statistical relations are established for electricity use, heating/industrial fuels, ground transportation, water consumption, waste generation, and steel production in terms of heating-degree days, urban form, economic activity, and population growth. Analysis at the microscale shows that electricity use is strongly correlated with building floor area, explaining the macroscale correlation between per capita electricity use and urbanized area per capita.
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