Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Urban Extents Grid

The Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Urban Extents Grid distinguishes urban and rural areas based on a combination of population counts (persons), settlement points, and the presence of Nighttime Lights. Areas are defined as urban where contiguous lighted cells from the Nighttime Lights or approximated urban extents based on buffered settlement points for which the total population is greater than 5,000 persons. This data set is produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with the International Food Policy Research Institute (IFPRI), The World Bank, and Centro Internacional de Agricultura Tropical (CIAT).

全球城乡映射项目，版本1（GRUMPv1）：城市范围网格通过人口数量（人）、定居点以及夜间灯光的存在来区分城乡区域。该数据集将连续的夜间灯光照亮单元格或基于缓冲定居点的近似城市范围定义为城市区域，其中总人口数量超过5,000人。该数据集由哥伦比亚大学国际地球科学信息网络中心（CIESIN）与国际粮食政策研究所（IFPRI）、世界银行以及国际热带农业研究中心（CIAT）合作制作。