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Is spatial resolution critical in urbanization velocity analysis? Investigations in the Pearl River Delta.

Wei, Chunzhu und Blaschke, Thomas und Kazakopoulos, Pavlos und Taubenböck, Hannes und Tiede, Dirk (2017) Is spatial resolution critical in urbanization velocity analysis? Investigations in the Pearl River Delta. Remote Sensing, 9 (1), Seiten 1-25. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/rs9010080. ISSN 2072-4292.

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Offizielle URL: http://www.mdpi.com/2072-4292/9/1/80

Kurzfassung

Grid-based urbanization velocity analysis of remote sensing imagery is used to measure urban growth rates. However, it remains unclear how critical the spatial resolution of the imagery is to such grid-based approaches. This research therefore investigated how urbanization velocity estimates respond to different spatial resolutions, as determined by the grid sizes used. Landsat satellite images of the Pearl River Delta (PRD) in China from the years 2000, 2005, 2010 and 2015 were hierarchically aggregated using different grid sizes. Statistical analyses of urbanization velocity derived using different spatial resolutions (or grid sizes) were used to investigate the relationships between socio-economic indicators and the velocity of urbanization for 27 large cities in PRD. The results revealed that those cities with above-average urbanization velocities remain unaffected by the spatial resolution (or grid-size), and the relationships between urbanization velocities and socio-economic indicators are independent of spatial resolution (or grid sizes) used. Moreover, empirical variogram models, the local variance model, and the geographical variance model all indicated that coarse resolution version (480 m) of Landsat images based on aggregated pixel yielded more appropriate results than the original fine resolution version (30 m), when identifying the characteristics of spatial autocorrelation and spatial structure variability of urbanization patterns and processes. The results conclude that the most appropriate spatial resolution for investigations into urbanization velocities is not always the highest resolution. The resulting patterns of urbanization velocities at different spatial resolutions can be used as a basis for studying the spatial heterogeneity of other datasets with variable spatial resolutions, especially for evaluating the capability of a multi-resolution dataset in reflecting spatial structure and spatial autocorrelation features in an urban environment.

elib-URL des Eintrags:https://elib.dlr.de/111040/
Dokumentart:Zeitschriftenbeitrag
Titel:Is spatial resolution critical in urbanization velocity analysis? Investigations in the Pearl River Delta.
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Wei, Chunzhuuniversität salzburgNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Blaschke, Thomasdepartment of geography and geology, university of salzburg, hellbrunnerstrasse 34, salzburg, 5020, austriaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Kazakopoulos, Pavlosdepartment of geography and geology, university of salzburg, hellbrunnerstrasse 34, salzburg, 5020, austriaNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Taubenböck, Hanneshannes.taubenboeck (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Tiede, Dirkparis-lodron-universität salzburg, zgisNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:Januar 2017
Erschienen in:Remote Sensing
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:9
DOI:10.3390/rs9010080
Seitenbereich:Seiten 1-25
Verlag:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2072-4292
Status:veröffentlicht
Stichwörter:urbanization velocity; spatial resolution; empirical variograms; local variance model; geographical variance model; spatial autocorrelation
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Fernerkundung u. Geoforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Georisiken und zivile Sicherheit
Hinterlegt von: Taubenböck, Prof. Dr. Hannes
Hinterlegt am:14 Feb 2017 08:39
Letzte Änderung:29 Jul 2022 13:26

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