基于多源遥感的珠江三角洲城市化时空格局分析

Spatial-temporal Pattern Analysis of Urbanization in Pearl River Delta Based on Multisource Remote Sensing

本文选取珠三角地区近15年3期Landsat遥感影像,结合夜间灯光数据,采用非监督分类和目视解译,提取不透水地表分析珠三角地区城市化空间分布格局及动态演变。结果表明:1.利用Landsat影像和灯光数据相结合可以提高不透水地表提取精度,可以快速、有效地监测城市扩张情况,分析空间格局演变。2.珠三角2000-2015年呈现城市快速扩张态势,其中以广州和佛山扩张情况最为显著。

Based on 3 phases Landsat remote sensing images of Pearl River Delta in recent 15 years, combined with the night light data, the spatial distribution pattern and dynamic evolution of urbanization in Pearl River Delta were analyzed by unsupervised classification and visual interpretation in this paper. The results show that： 1.The combination of Landsat image and light data can improve the extraction accuracy of impervious surface, and can monitor the urban expansion and analyze the evolution of spatial pattern quickly and effectively. 2.From 2000 to 2015, the Pearl River Delta showed the trend of rapid urban expansion, especially in Guangzhou and Foshan, the expansion was most pronounced.