基于遥感和GIS的天津城市空间形态变化分析  

Analysis of Tianjin Urban Expansion and Spatial Morphologic Change Based on GIS and RS in Recent 26 years

作　　者：蔡博峰[1] 张增祥[1] 刘斌[1] 周全斌[1] 

机构地区：[1]中国科学院遥感应用研究所,北京100101

出　　处：《地球信息科学》2007年第5期89-93,F0002,共6页Geo-information Science

基　　金：国家重点基础研究发展计划项目(973计划)(2002CB412507)资助

摘　　要：选用分维数和紧凑度作为城市形态指数,与城市土地利用变化相结合研究城市扩展的过程和特征。以天津市为例,利用遥感提取26年内9个时相的数据进行研究,结果表明,天津市近26年内有2次快速城市扩展,但两阶段的特征不同,后期虽然扩展速率高于前期,但形态指数变化速率却低于前期,反映出后期城市扩展更趋于理性和有序。城市形态指数与土地利用变化指标有很好的互补性,两者结合可以更充分描述城市扩展的特征和过程。The process and characteristics of urban expansion are analyzed using fractal dimension and compactness based spatial morphologic measurement coupled with land use change survey. The Tianjin city is selected as a study case with nine Landsat TM images abstracted in 26 years. The results showed that there are two terms of high speed urban expansions in this period. The latter one expanded fast than the former one but its morphologic metrics change speed was lower than that of the former. This means the latter term was more rational and regular. The metrics of urban morphology and urban land use are compulsory to each other which can be used to satisfactorily describe the process and characteristics of urban expansion.

关 键 词：分维数 紧凑度 城市扩展 城市土地利用变化 城市形态 

分 类 号：P208[天文地球—地图制图学与地理信息工程]