Working Paper

The Evolution of City Form : Evidence from Satellite Data

Show simple item record

collection.link.5
https://openknowledge.worldbank.org/handle/10986/9
collection.name.5
Policy Research Working Papers
dc.contributor.author
Lall, Somik V.
dc.contributor.author
Lebrand, Mathilde
dc.contributor.author
Soppelsa, Maria Edisa
dc.date.accessioned
2021-04-19T13:13:37Z
dc.date.available
2021-04-19T13:13:37Z
dc.date.issued
2021-04
dc.date.lastModified
2022-07-04T00:09:04Z
dc.description.abstract
This paper describes new global evidence—derived from satellite data—for rates and patterns of urban spatial development since 1990 along three margins: horizontal spread (outward extension), infill development (inward additions in the gaps left between earlier structures), and vertical layering (upward construction). The end product of this growth is floor space, the amount and distribution of which are central to understanding how a city becomes livable and sustainable. Over the quarter century between 1990 and 2015, urban built-up area worldwide grew by 30 percent through horizontal spread and infill. While most cities grow through a combination of horizontal spread and infill, the paper provides the first estimates of the relative prominence of each type of expansion at different stages of economic development. In low-income and lower-middle-income countries, 90 percent of urban built-up area expansion occurs as horizontal spread. The study also finds that increasing incomes are a uniquely necessary condition for a rise in floor space per person through vertical layering: the reason is that building tall is capital intensive. The analysis highlights that if a city’s population doubles but incomes stay constant, the city’s floor space per person declines by 40 percent; by contrast, if per capita income doubles but population stays constant, the city’s total floor space per person increases by 29 percent.
en
dc.identifier
http://documents.worldbank.org/curated/en/551511618021559759/The-Evolution-of-City-Form-Evidence-from-Satellite-Data
dc.identifier.uri
http://hdl.handle.net/10986/35440
dc.language
English
dc.publisher
World Bank, Washington, DC
dc.relation.ispartofseries
Policy Research Working Paper;No. 9618
dc.rights
CC BY 3.0 IGO
dc.rights.holder
World Bank
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/igo
dc.subject
TRANSPORT NETWORK
dc.subject
LAND USE
dc.subject
CITY STRUCTURE
dc.subject
SATELLITE IMAGERY
dc.title
The Evolution of City Form
en
dc.title.subtitle
Evidence from Satellite Data
en
dc.type
Working Paper
en
okr.date.disclosure
2021-04-09
okr.doctype
Publications & Research
okr.doctype
Publications & Research :: Policy Research Working Paper
okr.docurl
http://documents.worldbank.org/curated/en/551511618021559759/The-Evolution-of-City-Form-Evidence-from-Satellite-Data
okr.googlescholar.linkpresent
yes
okr.guid
551511618021559759
okr.identifier.doi
10.1596/1813-9450-9618
okr.identifier.externaldocumentum
090224b0884d5dee_1_0
okr.identifier.internaldocumentum
32986585
okr.identifier.report
WPS9618
okr.imported
true
en
okr.language.supported
en
okr.pdfurl
http://documents.worldbank.org/curated/en/551511618021559759/pdf/The-Evolution-of-City-Form-Evidence-from-Satellite-Data.pdf
en
okr.statistics.combined
768
okr.statistics.dr
551511618021559759
okr.topic
Urban Development :: Municipal Housing and Land
okr.topic
Urban Development :: Transport in Urban Areas
okr.topic
Urban Development :: Urban Economic Development
okr.unit
Urban, Disaster Risk Management, Resilience and Land Global Practice

Show simple item record



This item appears in the following Collection(s)