【摘要】 利用Landsat与DMSP/OLS相结合的建成区提取方法分析了1993-2010年广州市建成区扩张的时空特点及其驱动因子。首先采用突变检测法提取DMSP/OLS夜间灯光数据的建成区范围,并对利用SVM监督分类方法提取的Landsat影像建成区进行过滤,得到广州市城市建成区空间分布;再通过统计数据的相关性分析验证该方法的有效性;然后采用紧凑度、扩张速度、重心迁移等指标分析了广州市建成区扩张的时空特点;最后通过建成区面积与统计数据中经济参量的回归分析探讨了建成区扩张的驱动因子。更多还原

【Abstract】 In this paper, we used the extraction method of built-up area combining with Landsat and DMSP/OLS to analyze the spatio-temporal characteristics and driving factors of the expansion of built-up area in Guangzhou from 1993 to 2010. Firstly, we used the mutation detection method to extract the builtup area from the DMSP/OLS nighttime light images, filtered the Landsat image built-up area extracted by the SVM supervised classification method to obtain the distribution range of the built-up area, and used the correlation analysis of statistical data to validate the method. And then, we used compactness, expansion speed and center of gravity to analyze the spatio-temporal characteristics of the expansion of built-up area. Finally, we used the regression analysis of the builtup area and the economic parameters of the statistical data to explore the driving factors of the built-up area.更多还原