Urban cross-sector actions for carbon mitigation with local health co-benefits in China,Nature Climate Change

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Urban cross-sector actions for carbon mitigation with local health co-benefits in China
Nature Climate Change ( IF 30.7 ) Pub Date : , DOI: 10.1038/nclimate3373
Anu Ramaswami , Kangkang Tong , Andrew Fang , Raj M. Lal , Ajay Singh Nagpure , Yang Li , Huajun Yu , Daqian Jiang , Armistead G. Russell , Lei Shi , Marian Chertow , Yangjun Wang , Shuxiao Wang

Cities offer unique strategies to reduce fossil fuel use through the exchange of energy and materials across homes, businesses, infrastructure and industries co-located in urban areas. However, the large-scale impact of such strategies has not been quantified. Using new models and data sets representing 637 Chinese cities, we find that such cross-sectoral strategies—enabled by compact urban design and circular economy policies—contribute an additional 15%–36% to national CO₂ mitigation, compared to conventional single-sector strategies. As a co-benefit, ~25,500 to ~57,500 deaths annually are avoided from air pollution reduction. The benefits are highly variable across cities, ranging from <1%–37% for CO₂ emission reduction and <1%–47% for avoided premature deaths. These results, using multi-scale, multi-sector physical systems modelling, identify cities with high carbon and health co-benefit potential and show that urban–industrial symbiosis is a significant carbon mitigation strategy, achievable with a combination of existing and advanced technologies in diverse city types.

更新日期：2017-09-19

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