GHS Population Grids

The Global Human Settlement Layer (GHSL) Population Grids are a set of global raster datasets that provide the distribution of population, expressed as the number of people per cell. Residential population estimates between 1975 and 2020 in 5 years intervals and projections to 2025 and 2030 derived from CIESIN GPWv4.11 were disaggregated from census or administrative units to grid cells, informed by the distribution, density, and classification of built-up as mapped in the Global Human Settlement Layer (GHSL) global layer per corresponding epoch.This dataset is an update of the product released in 2022. Major improvements are the following: use of built-up volume maps (GHS-BUILT-V R2022A); use of more recent and detailed population estimates derived from GPWv4.11 integrating both UN World Population Prospects 2022 country population data and World Urbanisation Prospects 2018 data on Cities; revision of GPWv4.11 population growthrates by convergence to upper administrative level growthrates; systematic improvement of census coastlines; systematic revision of census units declared as unpopulated; integration of non-residential built-up volume information (GHS-BUILT-V_NRES R2023A); spatial resolution of 100m Mollweide (and 3 arcseconds in WGS84); projections to 2030. The GHSL population grids are produced by the Joint Research Centre (JRC) of the European Commission.

全球人类住区图层（Global Human Settlement Layer，以下简称GHSL）人口网格是一套全球栅格数据集，用于表征人口空间分布，以单栅格内的人口数为统计单位。该数据集涵盖1975年至2020年每5年间隔的居住人口估算数据，以及基于CIESIN GPWv4.11推导的2025年、2030年人口预测数据；此类数据最初来源于人口普查或行政单元的统计结果，后结合GHSL对应时期建成区的分布、密度与分类制图信息，被空间分解至栅格单元。本数据集为2022年发布的同系列产品的更新版本，主要改进包括：采用建成区体积地图（GHS-BUILT-V R2022A）；采用基于GPWv4.11的最新详细人口估算数据，该数据整合了联合国《世界人口展望2022》国家人口统计数据与《世界城市化展望2018》城市相关统计数据；通过向高级行政单元人口增长率收敛的方式，修正了GPWv4.11的人口增长率参数；系统性优化普查海岸线数据；系统性修订了被标注为无人居住的普查单元；整合非居住类建成区体积信息（GHS-BUILT-V_NRES R2023A）；空间分辨率为100米莫尔韦德投影坐标系（WGS84坐标系下为3角秒）；新增2030年人口预测维度。本GHSL人口网格数据集由欧盟委员会联合研究中心（Joint Research Centre，以下简称JRC）编制发布。

搜集汇总

背景与挑战

背景概述

GHS Population Grids是一个全球人口分布数据集，提供1975年至2020年每5年一次的人口估计及未来预测，空间分辨率为100米。该数据集由欧盟委员会联合研究中心制作，2022年版本进行了多项数据质量和精度改进。