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Uncovering the Carbon Emission Intensity and Reduction Potentials of the Metro Operation Phase: A Case Study in Shenzhen Megacity

The huge energy consumption of metro operations has become a significant challenge faced by the urban public transportation sector to achieve low-carbon development. Using Shenzhen as an example, this study has made efforts to quantify the metro’s energy consumption and carbon emission intensity dur...

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Detalles Bibliográficos
Autores principales: Chen, Kunyang, Zhang, Guobin, Wu, Huanyu, Mao, Ruichang, Chen, Xiangsheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9819634/
https://www.ncbi.nlm.nih.gov/pubmed/36612525
http://dx.doi.org/10.3390/ijerph20010206
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author Chen, Kunyang
Zhang, Guobin
Wu, Huanyu
Mao, Ruichang
Chen, Xiangsheng
author_facet Chen, Kunyang
Zhang, Guobin
Wu, Huanyu
Mao, Ruichang
Chen, Xiangsheng
author_sort Chen, Kunyang
collection PubMed
description The huge energy consumption of metro operations has become a significant challenge faced by the urban public transportation sector to achieve low-carbon development. Using Shenzhen as an example, this study has made efforts to quantify the metro’s energy consumption and carbon emission intensity during the operation phase by using the Life Cycle Assessment approach. Furthermore, this study evaluates the actions that can be taken to reduce energy consumption and emissions. A comparative analysis between metros and other public transportation modes has also been conducted. The results show that the annual carbon emissions from the metro’s operation phase in Shenzhen city increased from 63,000 t CO(2)e in 2005 to 1.3 Mt CO(2)e in 2021, and the historically accumulated carbon emissions are 9.5 Mt CO(2)e. The unit operating mileage, the unit station area, and the per capita carbon emission intensity were 2.1 kg CO(2)e/km, 132.5 kg CO(2)e/m(2), and 0.6 kg CO(2)e per capita (13th Five-Year Plan Period), respectively. By continually promoting the low-carbon operation of the subway, the cumulative carbon savings could reach 0.1 Mt CO(2)e (2022–2035).
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spelling pubmed-98196342023-01-07 Uncovering the Carbon Emission Intensity and Reduction Potentials of the Metro Operation Phase: A Case Study in Shenzhen Megacity Chen, Kunyang Zhang, Guobin Wu, Huanyu Mao, Ruichang Chen, Xiangsheng Int J Environ Res Public Health Article The huge energy consumption of metro operations has become a significant challenge faced by the urban public transportation sector to achieve low-carbon development. Using Shenzhen as an example, this study has made efforts to quantify the metro’s energy consumption and carbon emission intensity during the operation phase by using the Life Cycle Assessment approach. Furthermore, this study evaluates the actions that can be taken to reduce energy consumption and emissions. A comparative analysis between metros and other public transportation modes has also been conducted. The results show that the annual carbon emissions from the metro’s operation phase in Shenzhen city increased from 63,000 t CO(2)e in 2005 to 1.3 Mt CO(2)e in 2021, and the historically accumulated carbon emissions are 9.5 Mt CO(2)e. The unit operating mileage, the unit station area, and the per capita carbon emission intensity were 2.1 kg CO(2)e/km, 132.5 kg CO(2)e/m(2), and 0.6 kg CO(2)e per capita (13th Five-Year Plan Period), respectively. By continually promoting the low-carbon operation of the subway, the cumulative carbon savings could reach 0.1 Mt CO(2)e (2022–2035). MDPI 2022-12-23 /pmc/articles/PMC9819634/ /pubmed/36612525 http://dx.doi.org/10.3390/ijerph20010206 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Kunyang
Zhang, Guobin
Wu, Huanyu
Mao, Ruichang
Chen, Xiangsheng
Uncovering the Carbon Emission Intensity and Reduction Potentials of the Metro Operation Phase: A Case Study in Shenzhen Megacity
title Uncovering the Carbon Emission Intensity and Reduction Potentials of the Metro Operation Phase: A Case Study in Shenzhen Megacity
title_full Uncovering the Carbon Emission Intensity and Reduction Potentials of the Metro Operation Phase: A Case Study in Shenzhen Megacity
title_fullStr Uncovering the Carbon Emission Intensity and Reduction Potentials of the Metro Operation Phase: A Case Study in Shenzhen Megacity
title_full_unstemmed Uncovering the Carbon Emission Intensity and Reduction Potentials of the Metro Operation Phase: A Case Study in Shenzhen Megacity
title_short Uncovering the Carbon Emission Intensity and Reduction Potentials of the Metro Operation Phase: A Case Study in Shenzhen Megacity
title_sort uncovering the carbon emission intensity and reduction potentials of the metro operation phase: a case study in shenzhen megacity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9819634/
https://www.ncbi.nlm.nih.gov/pubmed/36612525
http://dx.doi.org/10.3390/ijerph20010206
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