Transboundary Environmental Footprints of the Urban Food Supply Chain and Mitigation Strategies

Yuanchao Hu, Shenghui Cui, Xuemei Bai, Yong Guan Zhu, Bing Gao, Anu Ramaswami, Jianxiong Tang, Miaohong Yang, Qianhu Zhang, Yunfeng Huang

Research output: Contribution to journalArticle

Abstract

Food supply has been the central issue of human development for millennia and has become increasingly critical in an urbanizing world. However, the environmental footprints and associated mitigation strategies of food consumption have rarely been comprehensively characterized at urban or regional scales. Here, we analyze the water, carbon, reactive nitrogen, and phosphorus footprints of food consumption in Chinese urban regions and demonstrate how such information can help to formulate tailored mitigation strategies. The results show that in three of the largest urban regions of China, 44-93% of the four footprints are embodied in transboundary food supply. The size of the footprints and the effectiveness of mitigation measures in food supply chain vary across the environmental footprints and urban regions. However, targeting agriculture and food processing sectors in Hebei, Shandong, and Henan provinces can reduce these footprints by up to 47%. Our findings show that the analysis of the environmental footprints along the transboundary food supply chains could inform individualized and effective mitigation targets and strategies.

Original languageEnglish (US)
Pages (from-to)10460-10471
Number of pages12
JournalEnvironmental Science & Technology
Volume54
Issue number17
DOIs
StatePublished - Sep 1 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry

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    Hu, Y., Cui, S., Bai, X., Zhu, Y. G., Gao, B., Ramaswami, A., Tang, J., Yang, M., Zhang, Q., & Huang, Y. (2020). Transboundary Environmental Footprints of the Urban Food Supply Chain and Mitigation Strategies. Environmental Science & Technology, 54(17), 10460-10471. https://doi.org/10.1021/acs.est.0c01294