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Accuracy Assessment of the NLCD 2006 Impervious Surface for Roanoke and Blacksburg

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dc.contributorVirginia Tech GIS & Remote Sensing 2014 Research Symposiumen
dc.contributor.authorZhao, Suwenen
dc.contributor.authorFeng, Leyangen
dc.contributor.authorShao, Yangen
dc.contributor.authorDymond, Randel L.en
dc.contributor.departmentCenter for Environmental Applications of Remote Sensing (CEARS)en
dc.contributor.departmentVirginia Tech GIS and Remote Sensing Research Symposiumen
dc.coverage.cityRoanokeen
dc.coverage.cityBlacksburgen
dc.coverage.countryUnited Statesen
dc.coverage.stateVirginiaen
dc.date.accessioned2014-11-04T19:39:22Zen
dc.date.available2014-11-04T19:39:22Zen
dc.date.issued2014en
dc.description.abstractImpervious surface map products are important for the study of urbanization, urban heat island effects, watershed hydrology, water pollution, and ecosystem services in general. At the conterminous US scale, impervious surfaces are mapped for 2001 and 2006. The accuracy of the 2006 NLCD impervious surface, however, has not been thoroughly examined, especially for small and intermediate size cities (e.g., regional city). In this study, we selected two transects in two cities and visually interpreted aerial photo to develop impervious surface reference maps. We then compared percent impervious surface of the NLCD and aerial photo-interpreted reference maps. The comparison was conducted at 90m resolution to minimize the errors in image registration. Overall, we found that the 2006 NLCD impervious surface matched well with our reference data, although slight skewness at two extremes is present. The R² and RMSE statistics improved when the two datasets are compared at coarse aggregation levels (e.g. 180m).en
dc.description.sponsorshipVirginia Tech. Office of Geographical Information Systems and Remote Sensingen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/50685en
dc.language.isoenen
dc.rightsIn Copyrighten
dc.rights.holderZhao, Suwenen
dc.rights.holderFeng, Leyangen
dc.rights.holderShao, Yangen
dc.rights.holderDymond, Randel L.en
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectNational land cover data impervious surface dataset (NLCD IS)en
dc.subjectAerial photographyen
dc.subjectRoanoke, Va.en
dc.subjectBlacksburg, Va.en
dc.subjectLand use mappingen
dc.titleAccuracy Assessment of the NLCD 2006 Impervious Surface for Roanoke and Blacksburgen
dc.typePosteren
dc.type.dcmitypeTexten
dc.type.dcmitypeImageen

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