[[["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"]],[],[],["Agriculture and Agri-Food Canada (AAFC) initiated annual crop type mapping in 2009, starting with the Prairie Provinces, using a Decision Tree methodology. A 2019 satellite-based forest age map of Canada was created utilizing Landsat and MODIS data at a 30-meter resolution. Natural Resources Canada's (NRCan) Canadian Digital Elevation Model (CDEM), part of the altimetry system, provides elevation data comprising multiple Digital Elevation Models (DEMs).\n"]]