Modeling population density based on nighttime light images and land use data in China
Modeling population density based on nighttime light images and land use data in China
复制标题
基于中国夜间灯光图像和土地利用数据的人口密度建模
DOI：
10.1016/j.apgeog.2017.12.012
复制
发表时间：
2018-01-01
影响因子：
4.9
通讯作者：
Xiang, Wenli
中科院分区：
文献类型：
--
作者：
Tan, Minghong;Li, Xiubin;Xiang, Wenli
人口变化是影响气候变化、生态建设、水土利用和经济增长的关键变量。人口普查数据通常是点数据，而在科学研究中往往需要平面数据。利用夜间光照（NTL）影像和土地利用数据，结合全国第五次和第六次人口普查县级数据，分别对各县人口进行空间匹配，建立了空间分辨率为1 x 1 km的2000年和2010年中国人口密度图。本文提出的方法相对简单，仿真精度高。结果表明：世纪前10年，中国人口空间格局变化呈现出以下显著特征：1）中密度区的“消失”，即人口密度在500 ~ 1500人/km 2之间的地区在10年间减少了41%;即，人口密度超过1500人/km（2）的地区增加了76%; 3）低密度地区的扩张趋势与高密度地区相似。
Population change is a key variable that influences climate change, ecological construction, soil and water use, and economic growth. Census data are always point data, whereas planar data are often required in scientific research. By using nighttime light (NTL) images and land use data, combined with the fifth and sixth census data of China at the county level, we carried out spatial matching on the population of each county, respectively, and established population density diagrams of China for 2000 and 2010, which had a spatial resolution of 1 x 1 km. The method proposed in this paper is relatively simple and has a high simulation precision. The results showed that during the first ten years of the 21st century, there are some remarkable characteristics in Chinese population spatial pattern change: 1) the "disappearance" of intermediate-density regions; namely, areas with a population density between 500 and 1500 persons/km(2) have decreased by 41% during the ten years; 2) continuous growth of high-density regions; namely, areas with a population density of more than 1500 persons/km(2) have increased by 76%; 3) an expansion tendency of low-density regions similar to high-density regions.