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An approach for mapping large-area impervious surfaces: Synergistic use of Landsat-7 ETM+ and high spatial resolution imagery

Canadian Journal of Remote Sensing

By:
, , , , and
DOI: 10.5589/m02-098

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Abstract

A wide range of urban ecosystem studies, including urban hydrology, urban climate, land use planning, and resource management, require current and accurate geospatial data of urban impervious surfaces. We developed an approach to quantify urban impervious surfaces as a continuous variable by using multisensor and multisource datasets. Subpixel percent impervious surfaces at 30-m resolution were mapped using a regression tree model. The utility, practicality, and affordability of the proposed method for large-area imperviousness mapping were tested over three spatial scales (Sioux Falls, South Dakota, Richmond, Virginia, and the Chesapeake Bay areas of the United States). Average error of predicted versus actual percent impervious surface ranged from 8.8 to 11.4%, with correlation coefficients from 0.82 to 0.91. The approach is being implemented to map impervious surfaces for the entire United States as one of the major components of the circa 2000 national land cover database.

Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
An approach for mapping large-area impervious surfaces: Synergistic use of Landsat-7 ETM+ and high spatial resolution imagery
Series title:
Canadian Journal of Remote Sensing
DOI:
10.5589/m02-098
Volume:
29
Issue:
2
Year Published:
2003
Language:
English
Publisher:
Canadian Aeronautics and Space Institute
Description:
11 p.
First page:
230
Last page:
240
Online Only (Y/N):
N
Additional Online Files (Y/N):
N