长春市近50年城市扩展的遥感监测及时空过程分析

城市空间扩展是城市化现象在空间上的表现,因此城市空间扩展是衡量城市化水平的主要测度指标之一。我国现在正处在城市化进程快速发展时期,及时掌握城市空间扩展的信息,对于城市规划、城市建设、管理及决策具有重要的现实意义。本文结合地形图与遥感数据对长春市近50年来的城市扩展时空过程及其发展机制进行了分析与研究。在近50年来,长春市的城市空间扩展较快,但总体上是有序的、速度适中的和可持续性的。在新的多中心和组团式的城市空间快速扩展之时,贯彻新的城市总体规划和保护基本农田是当务之急。

Remote Sensing Monitor and Spatial-temporal Process' Analyses on Urban Expansion of Changchun City During Past 50 Years

The urban spatial expansionis the exhibition of the urbanizationphenomenon in space.Therefore the urban spatial expansionis one of the importantmeasure indexesto estimate the level of the urbanization.Because China is in the rapid developmentperiod of urbanization,toknowthe information of urban expansion in time has important value to urban planning,urban construction,urban management and decision-making.The thesis combined topography map and remote sensing data to analyze and research the spatial-temporal process and mechanism of the urbanexpansionin Changchun city during past 50 years.During past 50 years,the urban expansion was quick in Changchun city,as a whole,having been well ordered,mezzo speed and continuableprocess.When new polycentricand group urban expansion are occurring,to effectively carry out new master urban planning and protect basiccropland are urgent affairs.