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The Global Administrative Unit Layers (GAUL) is a spatial database of the administrative units for all the countries in the world. It is a project of the Food and Agriculture Organization (FAO) of the United Nations. ==Mission== The GAUL aims at compiling and disseminating the most reliable geographic information on administrative units for all the countries in the world, thereby contributing to the standardization of the spatial dataset representing administrative units. In this framework, its purposes are: * to overcome the fragmentation of the global dataset occurring when administrative units layers are digitized on a country-by-country basis * to keep historical track of changes occurring on the shapes and extent of the administrative units * to promote a unified coding system that reduces maintenance efforts. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Global Administrative Unit Layers」の詳細全文を読む スポンサード リンク
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