Urban food-energy-water nexus in Guangzhou

GAO Chengkang; ZHU Sulong; ZHANG Shuaibing; YU Meng; MENG Xiangyu; LI Xiaojun

doi:10.12202/j.0476-0301.2021108

Journal of Beijing Normal University(Natural Science) > 2021 > 57(5): 709-717. > DOI: 10.12202/j.0476-0301.2021108

GAO Chengkang, ZHU Sulong, ZHANG Shuaibing, YU Meng, MENG Xiangyu, LI Xiaojun. Urban food-energy-water nexus in Guangzhou[J]. Journal of Beijing Normal University(Natural Science), 2021, 57(5): 709-717. DOI: 10.12202/j.0476-0301.2021108

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Urban food-energy-water nexus in Guangzhou

1.
State Environmental Protection Key Laboratory of Eco-Industry, Northeastern University, 110819, Shenyang, Liaoning, China
2.
Geely Automobile Research Institute, 315336, Ningbo, Zhejiang, China
3.
Key laboratory of pollution ecology and environment engineering, Institute of Applied Ecology, Chinese Academy of Science, 110016, Shenyang, Liaoning, China

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Received Date: April 24, 2021
Available Online: September 13, 2021

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Abstract

Abstract

The food-energy-water (FEW) nexus is fundamental for human survival．The 2011 World Economic Forum (WEF) listed “FEW risk clusters” for the first time as a set of three important risks that will affect global landscape in the next decade．Here an analytical method based on material and energy flows was used to identify nodes and paths in the three metabolic networks．Association between FEWs and related indicators were analyzed according to identified nodes and pathways．Total water consumption related to food production in Guangzhou in 2017 was found to be 12.19×10⁸ m³, energy-related water consumption was 22.91×10⁸m³, energy consumption related to food production was 11.36×10⁴tce, and energy consumption related to water was 21.27×10⁴tce．It was found that resource consumption in Guangzhou gradually increased, resource index rapidly deteriorated, the level of resource self-sufficiency gradually decreased, impact on the environment showed a strengthening trend, the dependence and nexus between subsystems gradually strengthened．
- material flow,
- energy flow,
- food-energy-water nexus,
- Guangzhou,
- evaluation indicators

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