中国27省乡镇(街道)级人口密度数据集(2000年)

A dataset of population density at township level for 27 provinces of China(2000)

人口密度是表现人口分布最主要的形式和衡量人口分布地区差异的主要指标。乡镇(街道)处于我国行政体系的基层位置,也是中国人口普查数据公开发布的最小行政单元,乡镇级人口密度数据能够客观、精细地表征中国人口分布的空间格局和态势,对于资源、环境及人口问题的研究具有十分重要的意义。本文规范化处理了中国辽宁、吉林、内蒙古(部分地区)、北京、天津、上海、河北、河南、陕西、宁夏、山西、山东、安徽、江苏、湖南、湖北、江西、浙江、福建、广东、海南、云南、贵州、四川、重庆、青海、西藏这27个省(直辖市、自治区)乡镇(街道)级行政界线数据及第五次人口普查乡镇(街道)级人口统计数据,保证乡镇边界和县(区)界一致、各乡镇单元空间范围和人口普查信息一一对应。在此基础上,准确地匹配了各乡镇的空间范围及人口普查信息,计算了公里格网尺度的各乡镇平均人口密度,形成了本数据集。

Population density is the key indicator to characterize the pattern of population distribution and to measure regional differences in this respect.In China,township level is the basic administrative unit and the finest level for which census data are publicly available.Average population density data at township level can accurately describe the spatial pattern and trend of population distribution.Moreover,it can supplement adequate information for studies on resources,environment and population problems.In this paper,we systematically processed the township boundary data and the township-level demographic data in China’s 27 provinces.Then,a database of GIS-linked circa 2000 census data at township level covering 27 provinces was constructed.Based on the database,the average population density at township level was calculated and the dataset of population distribution at township level for China’s 27 provinces(2000)was generated.