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Land consumption in cities: A comparative study across the globe

Hu, Jingliang and Wang, Yuanyuan and Taubenböck, Hannes and Zhu, Xiao Xiang (2021) Land consumption in cities: A comparative study across the globe. Cities, 113, 103163_1-103163_17. Elsevier. doi: 10.1016/j.cities.2021.103163. ISSN 0264-2751.

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Official URL: https://www.sciencedirect.com/science/article/pii/S0264275121000615


Land consumption delineates how effectively we use our living space - whether wastefully in area or efficiently. As the United Nations (UN) projects 5.1 billion population will live in urban areas in 2030, it is crucial to measure, compare, and understand land consumption for our cities across the globe. Currently global approaches for land consumption analysis rely on settlement layers produced by remote sensing data and population data achieved by distributing census data over settlement layers. These layers, however, do not have sufficient spatial details to capture the intra-urban structural variability within a city. In this study, we develop a classification system that consistently produces accurate local climate zone (LCZ) maps at intra-urban scale for 40 cities using Sentinel data. We use the LCZ classes as proxies to disaggregate the global population grids (GHS-POP) to this intra-urban scale. With the refined data, we perform an intra-urban land consumption analysis for 40 cities across the globe. Our measurements shows that current per-city land consumption studies severely deviate from the intra-urban variability. We argue urban land consumption at global scale must proceed to an intra-urban reso-lution. In addition, our measurements also indicate that urban land consumption is differing immensely across the globe.

Item URL in elib:https://elib.dlr.de/137599/
Document Type:Article
Title:Land consumption in cities: A comparative study across the globe
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hu, Jingliangjingliang.hu (at) dlr.deUNSPECIFIED
Wang, YuanyuanYuanyuan.Wang (at) dlr.deUNSPECIFIED
Taubenböck, Hanneshannes.taubenboeck (at) dlr.deUNSPECIFIED
Zhu, Xiao Xiangxiao.zhu (at) dlr.deUNSPECIFIED
Date:June 2021
Journal or Publication Title:Cities
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.cities.2021.103163
Page Range:103163_1-103163_17
Keywords:Land consumption, Local climate zone~(LCZ), Population density, Sentinel-1, Sentinel-2, Topology enhanced ensemble classification, Urban land consumption, Urban morphology
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical remote sensing, R - Remote Sensing and Geo Research
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > EO Data Science
German Remote Sensing Data Center > Geo Risks and Civil Security
Deposited By: Hu, Jingliang
Deposited On:05 Mar 2021 10:35
Last Modified:24 Aug 2021 16:03

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