济南市区域交通可达性与城市功能用地变化研究

RESEARCH ON ACCESSIBILITY OF TRANSPORT AND URBAN FUNCTION OF LAND USE CHANGE IN JINAN

区域交通可达性对城市形态具有重要的影响,对分析城市形态发展和城市中各个类型功能用地的演变具有很大作用.利用Arc GIS空间分析技术,将济南市城区内交通路网矢量化,然后转成栅格数据文件重分类再赋值,生成基于交通可达性的成本距离栅格文件,与济南市城市功能用地进行叠加分析,研究区域交通可达性对城市功能用地结构演化的影响.结论为:济南市各类城市功能用地在城市交通网络发展带动下的演变过程中,呈现先高速增长向外扩张,后稳定增长的趋势.

Regional transportation accessibility has important effects on urban form, it also has an important influence on analysis of urban form development and the evolution of the urban land for various types of functions. Using the spatial analysis of ArcGIS to vector quantization transportation network in Jinan city, and then converted to grid data file reclassification to assign a new value, based on the transportation accessibility the cost of distance grid file is generated. Combined with the Overlay analysis the grid file and land for urban functions of Jinan the impact of the area traffic accessibility on the evolution of urban functions of Jinan is studiced. The conclusion is： with the development of the urban traffic network evolution, the various types of land for urban functions presents the first high-speed growth outward expansion, then has steady growth trend.