Urban Footprint, Zhengzhou, China, 1990

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Abstract/Contents

Abstract: This raster layer contains the total area occupied by the built-up area of Zhengzhou, China and its urbanized open space in 1990. Categories of urban land use represented in these data include: urban, suburban, rural and urbanized open land. The built-up area of the city is the area occupied by built-up pixels within the set of administrative boundaries defining the city. The urbanized open space consists of all fringe open spaces (including exterior open spaces) and all captured open spaces. These data are part of the Atlas of Urban Expansion.
Purpose: The Atlas of Urban Expansion provides the geographic and quantitative dimensions of urban expansion and its key attributes in cities the world over. The data and images are available for free downloading, for scholars, public officials, planners, those engaged in international development, and concerned citizens. The global empirical evidence presented here is critical for an intelligent discussion of plans and policies to manage urban expansion everywhere. This resource provides both the conceptual framework and, for the first time, the basic empirical data and quantitative dimensions of past, present, and future urban expansion in cities around the world that are necessary for making minimal preparations for the massive urban growth expected in the coming decades.

Type of resource	cartographic, software, multimedia
Form	GeoTIFF
Place	Cambridge, MA, US
Publisher	Lincoln Institute of Land Policy
Date valid	1990
Publication date	2012
Language	English
Digital origin	born digital
Map data	Scale not given. ; EPSG::32649 E 113°6ʹ42ʺ--E 114°12ʹ21ʺ/N 34°59ʹ55ʺ--N 34°17ʹ20ʺE 113°6ʹ42ʺ--E 114°12ʹ21ʺ/N 34°59ʹ55ʺ--N 34°17ʹ19ʺ, Scale not given ; EPSG::4326

Supplemental information	This downloaded layer may also conain an ERDAS Imagine Image format raster dataset. The Atlas of Urban Expansion is also available as a printed book. The Atlas of Urban Expansion accompanies the Policy Focus Report Making Room for a Planet of Cities, a comprehensive and original analysis of the quantitative dimensions of past, present, and future global urban land cover, culminating in a proposed new paradigm for preparing for explosive growth in cities the world over. Further detail of that analysis is available in three working papers available for downloading: The Persistent Decline in Urban Densities, The Fragmentation of Urban Footprints, and A Planet of Cities: Country Estimates and Projections of Urban Land Cover, 2000-2050. A forthcoming book, titled The Expansion of Cities, bringing together the analysis of the maps in the Atlas of Urban Expansion within a broader discussion of urban expansion in a global and historical perspective, will be published by the Lincoln Institute in 2012.
WGS84 Cartographics	This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Location	https://purl.stanford.edu/mn016vx3828

Use and reproduction: This item is in the public domain. There are no restrictions on use.
Copyright: This work is in the Public Domain, meaning that it is not subject to copyright.

Preferred citation: Angel, S., J. Parent, D. L. Civco and A. M. Blei, 2010. Atlas of Urban Expansion, Cambridge MA: Lincoln Institute of Land Policy, online at http://www.lincolninst.edu/subcenters/atlas-urban-expansion/.

Atlas of urban expansion : GIS data for cities

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