期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B7
页码：1373-1378
出版社：Copernicus Publications
摘要：Global Map is global digital framework geographic information. 179 countries and regions participate with the project to develop the Global Map and over 96 % of whole land areas of the earth are included in the project. The first version of the Global Map data set has released by June, 2008. Global Map consists of eight layers, namely, boundaries, drainage, transportation, population centers, elevation, land-cover, land-use and vegetation. The scale of Global Map is 1 to 1 million or 1 km resolution. The former four layers are provided by vector format and the latter four layers are provided as raster images. For monitoring and evaluation of the global environment issues, the data have to be updated continuously. Therefore, the Global Map is planed to update in every five years
