基于遥感影像的济南市城市扩张与驱动力分析

Analysis of Urban Expansion and Driving Force in Jinan Based on Remote Sensing Imagery

城市扩张是判断城市化程度的重要指标,城市扩张研究对城市合理规划具有重要意义。本文运用GIS和RS技术,以济南市2003、2009、2020年Landsat影像为数据源,结合城市扩张强度、紧凑度等指标,定量分析济南市城市扩张时空动态变化特征,并分析其驱动因素。结果表明:2003~2020年济南市城市用地面积扩张了1049.35 km2,扩张强度先上升后下降。近10年来,济南市城市扩张形态较狭长,城市重心向东南方向偏移,自然环境、人口增长、经济发展等影响因子影响着济南市的城市扩张。

Urban expansion is an important indicator to judge the degree of urbanization, and the study of urban expansion is of great significance to the rational planning of cities. This paper uses GIS and RS technology, takes Landsat images of Jinan in 2003, 2009 and 2020 as data sources, combines urban expansion intensity and compactness, and quantitatively analyzes the temporal and spatial dynamic changes of Jinan’s urban expansion, and analyzes its driving factors. The results show that from 2003 to 2020, the urban land area of Jinan City expanded by 1049.35 km2, and the expansion intensity first increased and then decreased. In the past 10 years, Jinan’s urban expansion has been narrow and long, the center of gravity of the city has shifted to the southeast, and the natural environment, population growth, economic development and other influencing factors have affected Jinan’s urban expansion.