快速城市化进程中我国城市空间形态演化特征分析  

Quantitative analyses of changes in urban spatial morphology under rapid urbanization in China

作　　者：宋瑜[1,2] 刘婷[1,2] 唐尧[1,2,3] 祝炜平[1,2,3] 汤维[1] 

机构地区：[1]杭州师范大学理学院遥感与地球科学研究院,杭州311121 [2]浙江省城市湿地与区域变化研究重点实验室,杭州311121 [3]杭州师范大学生命与环境科学学院,杭州311121

出　　处：《生态科学》2015年第3期122-126,共5页Ecological Science

基　　金：国家自然科学基金(41301484);浙江省自然科学基金(LQ13C030007);浙江省公益技术研究社会发展项目(2014C33049)

摘　　要：基于Landsat TM/ETM+数据完成了我国30个案例城市建设用地的遥感信息提取,采用空间自相关Moran’s I指数实现了城市空间形态集聚程度的分析与评价,以期阐明近年来中国城市空间扩展的现状和发展趋势,并为城市空间形态定量研究方法提供一定的技术手段。结果表明,案例城市人口空间结构基本上呈"单核"分布;2000—2010年间城市建设用地全局空间自相关Moran’s I指数平均变化率为–5.80%,即我国城市空间形态的集聚程度表现为整体性下降的趋势。因而,在我国快速城市化进程中,要特别注意城市用地过度扩展而引发的大分散和蔓延式扩张态势,遏制城市空间失控以促进城市经济、社会与环境的可持续发展。Quantitative metrics are of crucial importance to understanding the status and trends of the expansion of urban spatial morphology. In this study, based on the unsupervised classification and visual interpretation, the urban built-up areas of 30 case cities were extracted from Landsat TM/ETM＋ images, and the urban population distribution and spatial clustering feature were analyzed by using Local Moran＇s I index and global Moran＇s I indices respectively. The results showed that the spatial distribution of urban population in China＇s major cities exhibited single-core structure, and the Moran＇s I indices of the built-up areas generally decreased, and exhibited downward trends with an average rate of change of -5.80% from 2000 to 2010. During the studied 10 years of rapid process of urbanization, the clustering feature of the major cities generally decreased. We concluded that in order to promote the healthy development of socio-economic and environmental sustainability, it＇s necessary to curb the excessive sprawl trends of urban morphology in China.

关 键 词：城市形态 Moran’s I 集聚 城市化 

分 类 号：K901.8[历史地理—人文地理学]