Quantification of carbon footprint of urban roads via life cycle assessment

Case study of a megacity-Shenzhen, China

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

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

As one of the largest energy consumers, the transport sector generated direct and indirect emissions which significantly affect the environment, accounting for approximately one-third of the total carbon emissions. While the major impacts are from transport energy use and emissions, very few studies attempted to examine the impacts from transport infrastructure, especially at a city or country level. This paper, taking Shenzhen in China (a fast developing megacity) as the case study, is specially designed to quantify the carbon footprint of the urban roads by using streamlined life cycle assessment method. For given years (ranged from 2004 to 2013), various activities of urban roads (e.g. newly planned road construction, maintenance of road in use, and road renovation and demolition) have been examined in this study. The results show that the total carbon footprint from urban roads in Shenzhen was 260 (±20) thousand tons CO2e in 2013. The major contributor was the materials use (embodied impact) from newly constructed roads, which accounts for 52.3% of the total carbon footprint, followed by the maintenance stage (24.3%). The eco-design process of road construction plays a vital role in achieving the effective carbon footprint reduction. These findings help to better understand the carbon footprint from urban roads in megacities, and provide useful inputs for policy making process in terms of identifying carbon reduction opportunities for the transport sector. In addition, the methodologies are useful for the quantification of carbon footprint in other cities of China and beyond.

Original languageEnglish
JournalJournal of Cleaner Production
Volume166
Pages (from-to)40-48
ISSN0959-6526
DOIs
Publication statusPublished - 2017

Fingerprint

Carbon footprint
carbon footprint
megacity
Life cycle
life cycle
road
Road construction
road construction
Demolition
Carbon
demolition
assessment method
carbon emission
Roads
Shenzhen
China
Quantification
Life cycle assessment
energy use
policy making

Keywords

  • Carbon footprint
  • China
  • Shenzhen city
  • Streamlined life cycle assessment
  • Urban roads

Cite this

Mao, Ruichang ; Duan, Huabo ; Dong, Dan ; Zuo, Jian ; Song, Qingbin ; Liu, Gang ; Hu, Mingwei ; Zhu, Jiasong ; Dong, Biqin. / Quantification of carbon footprint of urban roads via life cycle assessment : Case study of a megacity-Shenzhen, China. In: Journal of Cleaner Production. 2017 ; Vol. 166. pp. 40-48.
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title = "Quantification of carbon footprint of urban roads via life cycle assessment: Case study of a megacity-Shenzhen, China",
abstract = "As one of the largest energy consumers, the transport sector generated direct and indirect emissions which significantly affect the environment, accounting for approximately one-third of the total carbon emissions. While the major impacts are from transport energy use and emissions, very few studies attempted to examine the impacts from transport infrastructure, especially at a city or country level. This paper, taking Shenzhen in China (a fast developing megacity) as the case study, is specially designed to quantify the carbon footprint of the urban roads by using streamlined life cycle assessment method. For given years (ranged from 2004 to 2013), various activities of urban roads (e.g. newly planned road construction, maintenance of road in use, and road renovation and demolition) have been examined in this study. The results show that the total carbon footprint from urban roads in Shenzhen was 260 (±20) thousand tons CO2e in 2013. The major contributor was the materials use (embodied impact) from newly constructed roads, which accounts for 52.3{\%} of the total carbon footprint, followed by the maintenance stage (24.3{\%}). The eco-design process of road construction plays a vital role in achieving the effective carbon footprint reduction. These findings help to better understand the carbon footprint from urban roads in megacities, and provide useful inputs for policy making process in terms of identifying carbon reduction opportunities for the transport sector. In addition, the methodologies are useful for the quantification of carbon footprint in other cities of China and beyond.",
keywords = "Carbon footprint, China, Shenzhen city, Streamlined life cycle assessment, Urban roads",
author = "Ruichang Mao and Huabo Duan and Dan Dong and Jian Zuo and Qingbin Song and Gang Liu and Mingwei Hu and Jiasong Zhu and Biqin Dong",
year = "2017",
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Quantification of carbon footprint of urban roads via life cycle assessment : Case study of a megacity-Shenzhen, China. / Mao, Ruichang; Duan, Huabo; Dong, Dan; Zuo, Jian; Song, Qingbin; Liu, Gang; Hu, Mingwei; Zhu, Jiasong; Dong, Biqin.

In: Journal of Cleaner Production, Vol. 166, 2017, p. 40-48.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Quantification of carbon footprint of urban roads via life cycle assessment

T2 - Case study of a megacity-Shenzhen, China

AU - Mao, Ruichang

AU - Duan, Huabo

AU - Dong, Dan

AU - Zuo, Jian

AU - Song, Qingbin

AU - Liu, Gang

AU - Hu, Mingwei

AU - Zhu, Jiasong

AU - Dong, Biqin

PY - 2017

Y1 - 2017

N2 - As one of the largest energy consumers, the transport sector generated direct and indirect emissions which significantly affect the environment, accounting for approximately one-third of the total carbon emissions. While the major impacts are from transport energy use and emissions, very few studies attempted to examine the impacts from transport infrastructure, especially at a city or country level. This paper, taking Shenzhen in China (a fast developing megacity) as the case study, is specially designed to quantify the carbon footprint of the urban roads by using streamlined life cycle assessment method. For given years (ranged from 2004 to 2013), various activities of urban roads (e.g. newly planned road construction, maintenance of road in use, and road renovation and demolition) have been examined in this study. The results show that the total carbon footprint from urban roads in Shenzhen was 260 (±20) thousand tons CO2e in 2013. The major contributor was the materials use (embodied impact) from newly constructed roads, which accounts for 52.3% of the total carbon footprint, followed by the maintenance stage (24.3%). The eco-design process of road construction plays a vital role in achieving the effective carbon footprint reduction. These findings help to better understand the carbon footprint from urban roads in megacities, and provide useful inputs for policy making process in terms of identifying carbon reduction opportunities for the transport sector. In addition, the methodologies are useful for the quantification of carbon footprint in other cities of China and beyond.

AB - As one of the largest energy consumers, the transport sector generated direct and indirect emissions which significantly affect the environment, accounting for approximately one-third of the total carbon emissions. While the major impacts are from transport energy use and emissions, very few studies attempted to examine the impacts from transport infrastructure, especially at a city or country level. This paper, taking Shenzhen in China (a fast developing megacity) as the case study, is specially designed to quantify the carbon footprint of the urban roads by using streamlined life cycle assessment method. For given years (ranged from 2004 to 2013), various activities of urban roads (e.g. newly planned road construction, maintenance of road in use, and road renovation and demolition) have been examined in this study. The results show that the total carbon footprint from urban roads in Shenzhen was 260 (±20) thousand tons CO2e in 2013. The major contributor was the materials use (embodied impact) from newly constructed roads, which accounts for 52.3% of the total carbon footprint, followed by the maintenance stage (24.3%). The eco-design process of road construction plays a vital role in achieving the effective carbon footprint reduction. These findings help to better understand the carbon footprint from urban roads in megacities, and provide useful inputs for policy making process in terms of identifying carbon reduction opportunities for the transport sector. In addition, the methodologies are useful for the quantification of carbon footprint in other cities of China and beyond.

KW - Carbon footprint

KW - China

KW - Shenzhen city

KW - Streamlined life cycle assessment

KW - Urban roads

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DO - 10.1016/j.jclepro.2017.07.173

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JO - Journal of Cleaner Production

JF - Journal of Cleaner Production

SN - 0959-6526

ER -