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Uchiyama Y, Mori K. Methods for specifying spatial boundaries of cities in the world: The impacts of delineation methods on city sustainability indices. Sci Total Environ. 2017;592:345-356doi: 10.1016/j.scitotenv.2017.03.014.
Uchiyama, Y., & Mori, K. (2017). Methods for specifying spatial boundaries of cities in the world: The impacts of delineation methods on city sustainability indices. The Science of the total environment, 592345-356. https://doi.org/10.1016/j.scitotenv.2017.03.014
Uchiyama, Yuta, and Mori, Koichiro. "Methods for specifying spatial boundaries of cities in the world: The impacts of delineation methods on city sustainability indices." The Science of the total environment vol. 592 (2017): 345-356. doi: https://doi.org/10.1016/j.scitotenv.2017.03.014
Uchiyama Y, Mori K. Methods for specifying spatial boundaries of cities in the world: The impacts of delineation methods on city sustainability indices. Sci Total Environ. 2017 Aug 15;592:345-356. doi: 10.1016/j.scitotenv.2017.03.014. Epub 2017 Mar 29. PMID: 28319721.
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Sci Total Environ. 2017 Aug 15;592:345-356. doi: 10.1016/j.scitotenv.2017.03.014. Epub 2017 Mar 29.

Methods for specifying spatial boundaries of cities in the world: The impacts of delineation methods on city sustainability indices.

The Science of the total environment

Yuta Uchiyama, Koichiro Mori

Affiliations

  1. Graduate School of Environmental Studies, Tohoku University, Aoba, 468-1, Aramaki, Aoba-ku, Sendai 980-0845, Japan. Electronic address: [email protected].
  2. International Center, Shiga University, 1-1-1 Banba, Hikone 522-8522, Shiga, Japan.. Electronic address: [email protected].

PMID: 28319721 DOI: 10.1016/j.scitotenv.2017.03.014

Abstract

The purpose of this paper is to analyze how different definitions and methods for delineating the spatial boundaries of cities have an impact on the values of city sustainability indicators. It is necessary to distinguish the inside of cities from the outside when calculating the values of sustainability indicators that assess the impacts of human activities within cities on areas beyond their boundaries. For this purpose, spatial boundaries of cities should be practically detected on the basis of a relevant definition of a city. Although no definition of a city is commonly shared among academic fields, three practical methods for identifying urban areas are available in remote sensing science. Those practical methods are based on population density, landcover, and night-time lights. These methods are correlated, but non-negligible differences exist in their determination of urban extents and urban population. Furthermore, critical and statistically significant differences in some urban environmental sustainability indicators result from the three different urban detection methods. For example, the average values of CO

Copyright © 2017 Elsevier B.V. All rights reserved.

Keywords: City; City sustainability index; LandScan population grid; Landcover; Night-time light; Urban area

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