SSCI 165Lgw Lecture Notes - Lecture 29: Urban Metabolism, Centrality, Eutrophication
Document Summary
How (cid:373)u(cid:272)h (cid:373)ate(cid:396)ial (cid:272)o(cid:373)es i(cid:374)/goes out; a(cid:374)ythi(cid:374)g that does(cid:374)"t go out (cid:271)uild up i(cid:374) Takes a materials balance perspective, (cid:373)ea(cid:374)i(cid:374)g if i(cid:374)puts do(cid:374)"t e(cid:395)ual outputs, Concept of hidden flows the pool size must change: materials that are mobilized to produce the resource are often not seen in the weight of that material in the city. In production cycle, you always produce waste and emit energy along the way. Zinc ore + waste rock zinc ore impure zinc refined zinc (50:1 ratio from. Urban metabolism definition beginning to end: sum total of technical and socio-economic processes in cities related to inputs of materials, water, and energy; production of energy, and elimination of waste, key features. Centrality of energy: today, it"s fossil fuels, complex, fossil-fuel-dependent economy, built environment, agriculture & consumption. Key flows in urban metabolism: energy, water. Construction materials (e. g. concrete: nutrients (green waste, human waste)
