Annual National Land Cover Database (NLCD) Collection 1 Fractional Impervious Surface Conterminous United States
收藏U.S. Geological Survey2026-04-23 收录
下载链接：
https://www.usgs.gov/centers/eros/science/usgs-eros-archive-land-cover-annual-nlcd-collection-1-fractional-impervious
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资源简介：
The Annual National Land Cover Database (NLCD) Fractional Impervious Surface product provides the fractional or percent surface area of a 30-meter map pixel that is covered with processed materials or structures (pavement, concrete, rooftops, and other constructed materials) that generate surface runoff. The majority of these materials are impervious to water, but many features that are not impervious like lawns and channelized ditches also contribute to surface runoff and water impairment.
提供机构：
Earth Resources Observation and Science Center
