FAO联合国粮农组织：2025年地理信息-分类系统：土地覆盖元语言（LCML）报告-第一部分（英文版）

The ISO 19144-3 – land use meta language (LUML) was prepared jointly by FAO, Technical Committee of ISO i.e., Technical Committee 211 (TC211) on Geographic information/Geomatics, and European Committee for Standardization (CEN) Technical Committee CEN/TC 287. This document specifies a Land Use Meta Language (LUML) expressed as a UML metamodel that allows different land use classification systems to be described. This document recognizes that there are a number of land use classification syste