[[["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 Bureau of Land Management (BLM) has collected over 6,000 terrestrial field plots since 2011 to assess land health through its AIM strategy. The USGS, in collaboration with federal agencies, has created the National Land Cover Database (NLCD), available for multiple epochs (2001-2021), updating land cover data. The NLCD utilizes 30-m Landsat-based imagery and is available from multiple years with two to three year intervals from 2016 onward.\n"]]