浙江大学学报（理学版）2017，Vol.44Issue(6)：631-639,9.DOI:10.3785/j.issn.1008-9497.2017.06.001
基于Landsat的合肥市城市扩张研究
Study on urban expansion of Hefei city based on Landsat data
摘要
Abstract
Analysis on urban expansion and its potential drivers play an important role in coordinating the contradiction between urban expansion and land resources protection and in promoting the urban sustainable development .Based on the series of Landsat images in 1996 ,1999 ,2002 ,2005 ,2008 ,2011 and 2014 ,we extracted the spatio-temporal distribution of city information of Hefei using supervised classification method . The urban expansion of Hefei city were analyzed from three aspects ,urban area change ,shape change and center of gravity . Furthermore ,the natural environment ,economic development ,population grow th ,traffic construction ,government behavior and other factors were combined to investigate the driving forces of urban development in Hefei city .The results show that :From 1996 to 2014 ,the urban land area of Hefei is 286 .09 km2 ;The expansion rate is 394 .7％ ;And the expansion velocity is 15 .89 km2 · a-1 .The appearance of urban expansion is very obvious .Specifically speaking ,during the past nearly 20 a ,the expansion appearance of Hefei city gradually tends to be narrow with the expansion direction towards the southwest ;And ,the expansion pattern appears as the star expansion mainly by transportation routes .The driving force analyses show that the main influencing factors of Hefei expansion are population growth and economic development .关键词
城市扩张/遥感/空间分析/驱动力Key words
urban expansion/remote sensing/spatial analysis/driving forces分类
天文与地球科学引用本文复制引用
吴小君,方秀琴,苗月鲜,王凯,庞婵云..基于Landsat的合肥市城市扩张研究[J].浙江大学学报（理学版）,2017,44(6):631-639,9.基金项目
"十三五"国家重点研发计划项目(2016YFA0601500) （2016YFA0601500）
中央高校基本科研业务费专项资金资助项目(2016B05414). （2016B05414）
