National Land Cover Database (NLCD) 2011 Land Cover Conterminous United States

The National Land Cover Database 2011 (NLCD2011) USFS percent tree canopy product was produced through a cooperative project conducted by the Multi-Resolution Land...美国林务局（United States Forest Service，USFS）2011年全国土地覆盖数据库（National Land Cover Database 2011，简称NLCD2011）树木冠层覆盖率产品，系由多分辨率土地（Multi-Resolution Land）……开展的合作项目所研制生成。