Satellite monitoring of shrinking cities on the globe and containment solutions

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

18 Scopus Citations
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Author(s)

  • Weixin Zhai
  • Zhidian Jiang
  • Xiangfeng Meng
  • Ying Long

Detail(s)

Original languageEnglish
Article number104411
Journal / PublicationiScience
Volume25
Issue number6
Online published16 May 2022
Publication statusPublished - 17 Jun 2022

Link(s)

Abstract

Shrinking cities are often neglected in the context of global urbanization, the tip of the iceberg that was driven by underlying complex sets of causes. Therefore, it is urgent and crucial to investigate the invisible aspects of global urbanization propelling specific challenges to attain Sustainable Development Goal 11 (SDG 11) related to sustainable cities and communities. Here, we identify shrinking cities in 1992-2000, 2000-2012, and 2013-2018 and predict them in 2018-2050, using nighttime light images and redefined natural city boundaries. The proportion of shrinking cities increased from 9% to 16 and 25%. Looking ahead, there will be 7,166 predicted shrinking cities in 2050, accounting for 37% of all cities. In this context, synergistic efforts like regreening vacant lands and constructing compact cities would help achieve SDG 11 in consideration of the new urban shrinking landscape with multisource data like CO2 emissions and points of interests (POIs).

Research Area(s)

  • URBAN-DEVELOPMENT, NATURAL CITIES, UNITED-STATES, CITY, DENSITY, GERMANY, SPRAWL, CONSUMPTION, SCENARIOS, PATTERNS

Citation Format(s)

Satellite monitoring of shrinking cities on the globe and containment solutions. / Zhai, Weixin; Jiang, Zhidian; Meng, Xiangfeng et al.
In: iScience, Vol. 25, No. 6, 104411, 17.06.2022.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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