Annual National Land Cover Database (NLCD) Collection 1.1 Impervious Descriptor

The USGS Land Cover program has combined the tried-and-true methodologies from premier land cover projects, National Land Cover Database (NLCD) and Land Change...美国地质调查局（United States Geological Survey, USGS）土地覆盖项目整合了来自两项顶级土地覆盖项目——全国土地覆盖数据库（National Land Cover Database, NLCD）与土地变化……的久经考验的方法体系