Gridded Population of the World, Version 3 (GPWv3): National Administrative Boundaries

The Gridded Population of the World, Version 3 (GPWv3): National Administrative Boundaries are derived from the land area grid to show the outlines of pixels (cells) that contain administrative Units in GPWv3 on a per-country/territory basis. The National Boundaries data are derived from the pixels as polygons and thus have rectilinear boundaries at large scale. Note that the polygons that outline the countries and territories are not official representations; rather, they represent the area covered by the statistical data as provided. The national/territorial boundaries are designed for cartographic use with the GPWv3 population raster data sets. GPWv3 is produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with Centro Internacional de Agricultura Tropical (CIAT).

《世界栅格人口，版本3（GPWv3）》：本数据集的国家行政边界由土地面积栅格派生，用以展示包含GPWv3中行政单元的像素（单元格）轮廓，并按国家/地区划分。国家边界数据由像素派生为多边形，因此在较大比例尺上具有矩形边界。请注意，勾勒国家及地区轮廓的多边形并非官方表示，它们仅代表所提供统计数据覆盖的区域。国家/地区边界旨在与GPWv3人口栅格数据集相结合，用于制图。GPWv3由哥伦比亚大学国际地球科学信息网络中心（CIESIN）与国际热带农业研究中心（CIAT）合作制作。