In this graph the urban metabolism of two cities is compared: the Greater Toronto Area (1999) and Hong Kong (1997).
From the paper: [this figure] shows a systems flow diagram comparing selected flows for the GTA [Greater Toronto Area] in 1999 and Hong Kong in 1997. This type of diagram is commonly used in materials flow analysis and can be used as a communication tool to convey information to policy-makers and the public.
This diagram does convey some basic information and it is easy to understand. It is good to see, however, that the visual appeal of data visualizations has improved over the years.
Please note that these data visualizations come from external sources (journal publications, academic books, reports, etc.). Copyright of these data visualizations is held by the publishers or authors. We have included these data visualizations on our website under the principles of fair use. However, if you would like to reuse any of these images be sure to either comply with the rules around fair use in your country or consult the original authors or publishers if in doubt.