Exposing the urban continuum:implications and crosscomparison from an interdisciplinary perspective  

作　　者：Johannes H.Uhl Hamidreza Zoraghein Stefan Leyk Deborah Balk Christina Corbane Vasileios Syrris Aneta JFlorczyk 

机构地区：[1]Department of Geography,University of Colorado Boulder,Boulder,CO,USA [2]National Center for Atmospheric Research(NCAR),Boulder,CO,USA [3]CUNY Institute for Demographic Research and Baruch College,City University of New York,New York City,NY,USA [4]European Commission,Joint Research Centre(JRC),Ispra,Italy

出　　处：《International Journal of Digital Earth》2020年第1期22-44,共23页国际数字地球学报（英文）

基　　金：This research has been funded,in part,by the U.S.National Science Foundation(Directorate for Social,Behavioral and Economic Sciences)award#1416860 to the City University of New York,the Population Council,the National Center for Atmospheric Research and the University of Colorado at Boulder;It has been supported,in part,by the Eunice Kennedy Shriver National Institute of Child Health and Human Development of the National Institutes of Health under Award Number P2CHD066613;Furthermore,this work has been funded,in part,by an Andrew Carnegie Fellowship(#G-F-16-53680)from the Carnegie Corporation of New York to D.Balk;Innovative Seed Grant funding from the University of Colorado,support through Earth Lab,a University of Colorado Boulder Grand Challenge Initiative,as well as a development grant received from the University of Colorado Population Center(CUPC)at the Institute of Behavioral Science(University of Colorado Boulder),are acknowledged.

摘　　要：There is an increasing availability of geospatial data describing patterns of human settlement and population such as various global remote-sensing based built-up land layers,fine-grained census-based population estimates,and publicly available cadastral and building footprint data.This development constitutes new integrative modeling opportunities to characterize the continuum of urban,peri-urban,and rural settlements and populations.However,little research has been done regarding the agreement between such data products in measuring human presence which is measured by different proxy variables(i.e.presence of built-up structures derived from different remote sensors,census-derived population counts,or cadastral land parcels).In this work,we quantitatively evaluate and cross-compare the ability of such data to model the urban continuum,using a unique,integrated validation database of cadastral and building footprint data,U.S.census data,and three different versions of the Global Human Settlement Layer(GHSL)derived from remotely sensed data.We identify advantages and shortcomings of these data types across different geographic settings in the U.S.,which will inform future data users on implications of data accuracy and suitability for a given application,even in data-poor regions of the world.

关 键 词：Built-up surfaces Global Human Settlement Layer(GHSL) Sentinel-1 LANDSAT agreement assessment urban modeling cadastral parcel data U.S.census data 

分 类 号：P27[天文地球—测绘科学与技术]