[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[],["The USGS National Land Cover Database (NLCD) provides 30-meter land cover data from Landsat imagery. It includes nine epochs: 2001, 2004, 2006, 2008, 2011, 2013, 2016, 2019, and 2021. NLCD products have been released for seven datasets : 1992, 2001, 2006, 2011, 2016, 2019 and 2021. The 2016 release started using two-to-three-year intervals. The data, which relies on imperviousness layers for urban areas, are created in partnership with federal agencies.\n"]]
