Towards a low carbon transition of urban public transport in megacities

A case study of Shenzhen, China

Dan Dong, Huabo Duan*, Ruichang Mao, Qingbin Song, Jian Zuo, Jiasong Zhu, Gang Wang, Mingwei Hu, Biqin Dong, Gang Liu

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The urgent need to develop low carbon urban transport systems particularly in Asian megacities is facing the significant challenge of growing motorization following population increase and economic development. Sustainable urban public transport (UPT) plays a crucial role to fulfil the ambitious targets on carbon emission reduction. In this study, life cycle assessment was employed to quantify the environmental impacts (measured by carbon emissions) of UPT systems (including bus and subway) in Shenzhen, a leading megacity in South China, and then to examine corresponding carbon intensity reduction potentials. Results showed that the total carbon emissions from UPT in Shenzhen have increased rapidly from 0.70 Mt in 2005 to 1.74 Mt in 2015 due to the fast growth of the volume of transport turnover. However, current low-carbon UPT mode has only reduced 0.21 Mt CO2 e (cumulative value, from 2005 to 2015), and thus could not contribute proportionally to the city's overall emission reduction target. Three advanced scenarios (from conservative to optimistic) were further simulated to estimate carbon emissions and their intensity reduction potentials over the next 15 years (2016–2030). Compared to the business-as-usual scenario, all these three low-carbon transition scenarios could significantly mitigate the rapid growth of carbon emissions and consequently help achieve Shenzhen's carbon intensity reduction goal by 2030 (60%, compared to 2005 level). These findings could not only inform evidence-based policy making to facilitate the low-carbon transition of the urban transport sector in Shenzhen, but also shed light on sustainable urban transition in other megacities.

Original languageEnglish
JournalResources, Conservation and Recycling
Volume134
Pages (from-to)149-155
ISSN0921-3449
DOIs
Publication statusPublished - 2018

Fingerprint

megacity
public transport
carbon emission
carbon
urban transport
policy making
Public transport
Carbon
Shenzhen
China
turnover
economic development
environmental impact
life cycle
Carbon emissions
Scenarios

Keywords

  • Carbon emission intensity
  • Life cycle assessment
  • Shenzhen
  • Subway
  • Urban public transport

Cite this

Dong, Dan ; Duan, Huabo ; Mao, Ruichang ; Song, Qingbin ; Zuo, Jian ; Zhu, Jiasong ; Wang, Gang ; Hu, Mingwei ; Dong, Biqin ; Liu, Gang. / Towards a low carbon transition of urban public transport in megacities : A case study of Shenzhen, China. In: Resources, Conservation and Recycling. 2018 ; Vol. 134. pp. 149-155.
@article{fe17538116524060b9b2110fe45f4d49,
title = "Towards a low carbon transition of urban public transport in megacities: A case study of Shenzhen, China",
abstract = "The urgent need to develop low carbon urban transport systems particularly in Asian megacities is facing the significant challenge of growing motorization following population increase and economic development. Sustainable urban public transport (UPT) plays a crucial role to fulfil the ambitious targets on carbon emission reduction. In this study, life cycle assessment was employed to quantify the environmental impacts (measured by carbon emissions) of UPT systems (including bus and subway) in Shenzhen, a leading megacity in South China, and then to examine corresponding carbon intensity reduction potentials. Results showed that the total carbon emissions from UPT in Shenzhen have increased rapidly from 0.70 Mt in 2005 to 1.74 Mt in 2015 due to the fast growth of the volume of transport turnover. However, current low-carbon UPT mode has only reduced 0.21 Mt CO2 e (cumulative value, from 2005 to 2015), and thus could not contribute proportionally to the city's overall emission reduction target. Three advanced scenarios (from conservative to optimistic) were further simulated to estimate carbon emissions and their intensity reduction potentials over the next 15 years (2016–2030). Compared to the business-as-usual scenario, all these three low-carbon transition scenarios could significantly mitigate the rapid growth of carbon emissions and consequently help achieve Shenzhen's carbon intensity reduction goal by 2030 (60{\%}, compared to 2005 level). These findings could not only inform evidence-based policy making to facilitate the low-carbon transition of the urban transport sector in Shenzhen, but also shed light on sustainable urban transition in other megacities.",
keywords = "Carbon emission intensity, Life cycle assessment, Shenzhen, Subway, Urban public transport",
author = "Dan Dong and Huabo Duan and Ruichang Mao and Qingbin Song and Jian Zuo and Jiasong Zhu and Gang Wang and Mingwei Hu and Biqin Dong and Gang Liu",
year = "2018",
doi = "10.1016/j.resconrec.2018.03.011",
language = "English",
volume = "134",
pages = "149--155",
journal = "Resources, Conservation and Recycling",
issn = "0921-3449",
publisher = "Elsevier",

}

Towards a low carbon transition of urban public transport in megacities : A case study of Shenzhen, China. / Dong, Dan; Duan, Huabo; Mao, Ruichang; Song, Qingbin; Zuo, Jian; Zhu, Jiasong; Wang, Gang; Hu, Mingwei; Dong, Biqin; Liu, Gang.

In: Resources, Conservation and Recycling, Vol. 134, 2018, p. 149-155.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Towards a low carbon transition of urban public transport in megacities

T2 - A case study of Shenzhen, China

AU - Dong, Dan

AU - Duan, Huabo

AU - Mao, Ruichang

AU - Song, Qingbin

AU - Zuo, Jian

AU - Zhu, Jiasong

AU - Wang, Gang

AU - Hu, Mingwei

AU - Dong, Biqin

AU - Liu, Gang

PY - 2018

Y1 - 2018

N2 - The urgent need to develop low carbon urban transport systems particularly in Asian megacities is facing the significant challenge of growing motorization following population increase and economic development. Sustainable urban public transport (UPT) plays a crucial role to fulfil the ambitious targets on carbon emission reduction. In this study, life cycle assessment was employed to quantify the environmental impacts (measured by carbon emissions) of UPT systems (including bus and subway) in Shenzhen, a leading megacity in South China, and then to examine corresponding carbon intensity reduction potentials. Results showed that the total carbon emissions from UPT in Shenzhen have increased rapidly from 0.70 Mt in 2005 to 1.74 Mt in 2015 due to the fast growth of the volume of transport turnover. However, current low-carbon UPT mode has only reduced 0.21 Mt CO2 e (cumulative value, from 2005 to 2015), and thus could not contribute proportionally to the city's overall emission reduction target. Three advanced scenarios (from conservative to optimistic) were further simulated to estimate carbon emissions and their intensity reduction potentials over the next 15 years (2016–2030). Compared to the business-as-usual scenario, all these three low-carbon transition scenarios could significantly mitigate the rapid growth of carbon emissions and consequently help achieve Shenzhen's carbon intensity reduction goal by 2030 (60%, compared to 2005 level). These findings could not only inform evidence-based policy making to facilitate the low-carbon transition of the urban transport sector in Shenzhen, but also shed light on sustainable urban transition in other megacities.

AB - The urgent need to develop low carbon urban transport systems particularly in Asian megacities is facing the significant challenge of growing motorization following population increase and economic development. Sustainable urban public transport (UPT) plays a crucial role to fulfil the ambitious targets on carbon emission reduction. In this study, life cycle assessment was employed to quantify the environmental impacts (measured by carbon emissions) of UPT systems (including bus and subway) in Shenzhen, a leading megacity in South China, and then to examine corresponding carbon intensity reduction potentials. Results showed that the total carbon emissions from UPT in Shenzhen have increased rapidly from 0.70 Mt in 2005 to 1.74 Mt in 2015 due to the fast growth of the volume of transport turnover. However, current low-carbon UPT mode has only reduced 0.21 Mt CO2 e (cumulative value, from 2005 to 2015), and thus could not contribute proportionally to the city's overall emission reduction target. Three advanced scenarios (from conservative to optimistic) were further simulated to estimate carbon emissions and their intensity reduction potentials over the next 15 years (2016–2030). Compared to the business-as-usual scenario, all these three low-carbon transition scenarios could significantly mitigate the rapid growth of carbon emissions and consequently help achieve Shenzhen's carbon intensity reduction goal by 2030 (60%, compared to 2005 level). These findings could not only inform evidence-based policy making to facilitate the low-carbon transition of the urban transport sector in Shenzhen, but also shed light on sustainable urban transition in other megacities.

KW - Carbon emission intensity

KW - Life cycle assessment

KW - Shenzhen

KW - Subway

KW - Urban public transport

U2 - 10.1016/j.resconrec.2018.03.011

DO - 10.1016/j.resconrec.2018.03.011

M3 - Journal article

VL - 134

SP - 149

EP - 155

JO - Resources, Conservation and Recycling

JF - Resources, Conservation and Recycling

SN - 0921-3449

ER -