Global and local carbon footprints of city of Hong Kong and Macao from 2000 to 2015

Xinyu Dou*, Zhu Deng, Taochun Sun, Piyu Ke, Biqing Zhu, Yuli Shan, Zhu Liu*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Hong Kong and Macao are featured with their urban metabolism as they heavily rely on the energy and resource supply from other regions. However, a comprehensive perspective is lacked to depict their CO2 emissions due to the independence of statistical data. Here we analyze the carbon footprints of Hong Kong and Macao. The direct energy-related emissions (Scope 1), the emissions of cross-boundary electricity (Scope 2), and the embodied emissions associated with trade (Scope 3) are examined. Scope 1 carbon footprints of the two areas were stabilized at 50 Mt, accounting for 0.6% of those from Mainland China in 2018. Their global footprints were approximately three times of their Scope 1 emissions, accompanied by a continuous growth between 2000 and 2015, and the contribution of their local footprints has doubled on average. Their Scope 3 emissions were mainly due to the enormous unfavorable balance of trade. Meanwhile, the increasing impact of imports' higher emission intensity on their Scope 3 emissions should not be ignored. We suggest that Hong Kong and Macao should adjust their mitigation policies that focus only on Scope 1 emissions as developed cities outsourcing production through supply chains.

Original languageEnglish
Article number105167
Number of pages12
JournalResources, Conservation and Recycling
Volume164
DOIs
Publication statusPublished - Jan-2021

Keywords

  • Carbon footprint
  • Three scopes emissions
  • Urban metabolism
  • Hong Kong
  • Macao
  • GHG EMISSIONS
  • CO2 EMISSIONS
  • ENERGY
  • CONSUMPTION
  • CITIES
  • METABOLISM
  • POLICY
  • TRADE

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