Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aac391 |
Estimating current and future global urban domestic material consumption | |
Baynes, Timothy Malcolm1; Musango, Josephine Kaviti2,3 | |
2018-06-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; South Africa |
英文摘要 | Urban material resource requirements are significant at the global level and these are expected to expand with future urban population growth. However, there are no global scale studies on the future material consumption of urban areas. This paper provides estimates of global urban domestic material consumption (DMC) in 2050 using three approaches based on: current gross statistics; a regression model; and a transition theoretic logistic model. All methods use UN urban population projections and assume a simple 'business-as-usual' scenario wherein historical aggregate trends in income and material flow continue into the future. A collation of data for 152 cities provided a year 2000 world average DMC/capita estimate, 12 tons/person/year (+/- 22%), which we combined with UN population projections to produce a first-order estimation of urban DMC at 2050 of similar to 73 billion tons/year (+/- 22%). Urban DMC/capita was found to be significantly correlated (R-2 > 0.9) to urban GDP/capita and area per person through a power law relation used to obtain a second estimate of 106 billion tons (+/- 33%) in 2050. The inelastic exponent of the power law indicates a global tendency for relative decoupling of direct urban material consumption with increasing income. These estimates are global and influenced by the current proportion of developed-world cities in the global population of cities (and in our sample data). A third method employed a logistic model of transitions in urban DMC/capita with regional resolution. This method estimated global urban DMC to rise from approximately 40 billion tons/year in 2010 to similar to 90 billion tons/year in 2050 (modelled range: 66-111 billion tons/year). DMC/capita across different regions was estimated to converge from a range of 5-27 tons/person/year in the year 2000 to around 8-17 tons/person/year in 2050. The urban population does not increase proportionally during this period and thus the global average DMC/capita increases from similar to 12 to similar to 14 tons/person/year, challenging resource decoupling targets. |
英文关键词 | cities material flow DMC logistic world regression privilege |
领域 | 气候变化 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000434490100002 |
WOS关键词 | MATERIAL FLOW-ANALYSIS ; MATERIAL EFFICIENCY ; STOCK DYNAMICS ; METABOLISM ; ENERGY ; PATTERNS ; POPULATION ; CITIES ; LIFE ; CITY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/14920 |
专题 | 气候变化 |
作者单位 | 1.CSIRO, Land & Water Div, Sydney, NSW, Australia; 2.Stellenbosch Univ, Sch Publ Leadership, Stellenbosch, South Africa; 3.Stellenbosch Univ, Ctr Renewable & Sustainable Energy Studies Urban, Ctr Complex Syst Transit, Stellenbosch, South Africa |
推荐引用方式 GB/T 7714 | Baynes, Timothy Malcolm,Musango, Josephine Kaviti. Estimating current and future global urban domestic material consumption[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(6). |
APA | Baynes, Timothy Malcolm,&Musango, Josephine Kaviti.(2018).Estimating current and future global urban domestic material consumption.ENVIRONMENTAL RESEARCH LETTERS,13(6). |
MLA | Baynes, Timothy Malcolm,et al."Estimating current and future global urban domestic material consumption".ENVIRONMENTAL RESEARCH LETTERS 13.6(2018). |
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