贵阳市1973—2010年建成区遥感动态监测与驱动力  

Dynamic Monitoring of Guiyang Built-up Area and Its Driving Forces for 1973—2010 Based On Remote Sensing Images

作　　者：李玲玲[1] 安裕伦[1] 邓焯文 

机构地区：[1]贵州师范大学地理与环境科学学院,贵州贵阳550001 [2]贵州省测绘产品质量监督检验站,贵州贵阳550001

出　　处：《山地学报》2014年第1期30-37,共8页Mountain Research

基　　金：贵州省科技厅工业攻关项目(黔科合(2007)3017)~~

摘　　要：城市建成区的空间扩展情况是衡量城市化水平的重要指标。以不同时段的遥感影像为数据源,应用GIS的空间分析,提取出6个时期贵阳市建成区扩展及对周边土地占用的相关信息;同时,应用分维数和紧凑度对建成区1973—2010年的扩展情况进行空间特征分析。结果表明:在37 a间,贵阳市建成区面积扩展了3.8倍,2010年建成区面积达到227.45 km2,相当于1973年的4.8倍,1973—1990年的17 a间,仅增加28.23 km2,而1990—2010年的20 a间,增加了152.23 km2。贵阳市建成区扩展的方式是以老城区为中心向四周扩展,西北方向为其主要的扩展方向,扩展占用的土地主要是耕地。自然环境对建成区的扩展形态起着限制作用,人口和社会经济的增长是建成区扩展的主要推动力,交通的发展是建成区扩展方向的牵引力,政策和规划在很大程度上对建成区扩展起着引导和推动作用。Situation of the urban space extension is one of the important indicators to measure the level of urbaniza- tion. This paper used different times of the remote sensing images as data source, applied GIS spatial analysis, to ex- tract six periods of urban spatial features and surrounding land use information of Guiyang, Guizhou, China. At the same time, the indicators fractal dimension and compactness were applied to analyze space characteristics of Guiy- ang＇ s extension from 1973 to 2010. Results show that： in 37 years, Guiyang＇ s area was expanded 3.8 times,which was 227.45 km2 in 2010,4.8 times in 1973;during the 17 years from 1973 to 1990,area increased just 28.23 km2 ,while it increased 152.23 km2 during the 20 years from 1990 to 2010. Guiyang＇ s urban space extended in the way making old city as the center to expand, the northwest as the main expansion direction, cultivated land as the main occupied land. Natural environment plays a limited role on the propagation of the built up area, population and society economic growth are the main driver of extension, the traffic is the traction of development, and policies and programming play a guiding and promoting role to a large extent to urban space extension.

关 键 词：贵阳市 建成区扩展 遥感监测 空间特征 驱动力 

分 类 号：X22[环境科学与工程—环境科学]