摘要
城市形态学在城市地理学的发展过程中占有重要地位 ,为战后城市地理学成为一门独立学科起了重要的推动作用。 2 0世纪 5 0年代后 ,因城市形态的研究没有取得突破性的进展 ,城市形态的研究似乎变成传统景观研究内容的一部分。 2 0世纪 80年代后 ,城市化、城市郊区化进程加快 ,城镇研究越来越受到重视 ,但城市地理学者在研究城镇之前必须对城乡进行划分 ,而城乡划分的基础是城市形态的信息提取 ,因而对城市形态的研究又得到重视 ,但城镇形态信息提取没有找到一个切实有效的方法。利用遥感技术 ,以太湖流域苏锡常地区为例 ,建立城镇形态信息的提取模型———仿归一化植被指数法 ,且通过对比监督分类法 ,说明仿归一化植被指数法提取城镇信息的特点 ,为城乡划分、城镇聚落结构、城市群等研究提供客观。
City form is one of the major part in urban geography which plays key role in promoting urban geography to become an in dependent scientific discipline in human geography after World War Ⅱ. The research on city form did not get to great progress since 1950s, which resulted in city form gradually become one of the traditional city landscape. Since 1980s, urbanization becomes fast and city problems become more and more concerned. But urban geography researchers must divide lines between city and country before studying cities.So city form becomes concerned again.However,urban researchers have not found an effective way to divide city and country until now. In this paper, we first build an extraction model of spatial information (simulated NDVI) in remote sensing technology, then explain advantages of this model to extract city and town form by contrasting supervised classification.
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2002年第1期27-31,共5页
Resources and Environment in the Yangtze Basin
基金
江苏省自然科学基金项目 ( 1999DLX0 0 0 0SZ1)
