Low Elevation Coastal Zone (LECZ) Urban-Rural Population Estimates, Global Rural-Urban Mapping Project (GRUMP), Alpha Version

The Low Elevation Coastal Zone (LECZ) Urban-Rural Population Estimates consists of country-level estimates of urban, rural and total population and land area country-wide and in the LECZ, if applicable. Additionally, the data set provides the number of urban extents, their population and land area that intersect the LECZ, by city-size population classifications of less than 100,000, 100,000 to 500,000, 500,000 to 1,000,000, 1,000,000 to 5,000,000, and more than 5,000,000. All estimates are based on GRUMP Alpha data products. The LECZ was generated using SRTM Digital Elevation Model data and includes all land area that is contiguous with the coast and 10 meters or less in elevation. All grids used for population, land area, urban mask, and LECZ were of 30 arc-second (~1 km ) resolution. This data set is produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with the International Institute for Environment and Development (IIED).

《低海拔沿海地带（LECZ）城乡人口估计》数据集包含各国城乡及总人口及国土面积的国家级估计，若适用，还包括LECZ范围内的数据。此外，该数据集提供了与LECZ相交的城市面积、人口及国土面积，并按城市人口规模分为少于10万、10万至50万、50万至100万、100万至500万、500万至5000万以及超过5000万等类别。所有估计均基于GRUMP Alpha数据产品。LECZ的生成利用了SRTM数字高程模型数据，包括与海岸线相连且海拔10米或以下的所有陆地面积。用于人口、国土面积、城市掩膜和LECZ的所有网格均为30弧秒（约1公里）的分辨率。本数据集由哥伦比亚大学国际地球科学信息网络中心（CIESIN）与国际环境与发展研究所（IIED）合作制作。