基于多源遥感数据的宝鸡市城市扩展分析

Analysis of Urban Expansion Based on Multi-source Remote Sensing Data in Baoji City

以宝鸡市城市规划区为研究对象,使用多时相遥感图像研究宝鸡市城市扩展,采用1988~2015年间,5个时相的遥感影像为数据源,采取非监督分类与人工目视相结合的方法,制成城区图,并结合宝鸡市的自然状况、社会经济状况、人口、交通、政策等情况,对宝鸡市近27年的城市建设用地在不同时期的城市扩展特征、扩展方式和速度进行研究,并对其扩展的驱动力因素进行分析。结果表明：宝鸡市在近27年间城市建成区面积持续扩大,各时期的城市扩展速率和扩展强度基本一致,建成区重心逐步向东发展。

In this study,the multi-temporal remote sensing data was used to analyze the expansion of Baoji city by the city planning region. The five different periods of remote sensing images during 1988 ~ 2015 were used as data sources,combined the unsupervised classification and visual interpretation methods to made urban expansion map,and then according to natural conditions,socio-economic status,population,transportation and policy in Baoji city,the expansion characteristics,mode and speed of Baoji city in the past 27 years were studied under different periods,while the driving forces of urban expansion were also analyzed. The results showed that： In nearly 27 years,the city built-up regions continue to expand. Urban expansion rate and expansion intensity in each period was consistent. The City centre was gradually developed to the east.