基于多尺度窗口分析的西安城市化空间格局及其特征  

The Spatial Patterns and Characteristic of Urbanization in Xi'an Based on Multi-scale Moving Window Analysis

作　　者：樊相宁[1] 孙晶 杨新军[1] 

机构地区：[1]西北大学城市与环境学院,西安710127 [2]密西根州立大学系统综合与可持续发展研究中心,美国东兰辛市48823

出　　处：《地域研究与开发》2014年第3期73-78,共6页Areal Research and Development

基　　金：国家自然科学基金项目(41171127);陕西省重点学科"地理学"学科建设经费资助项目(0705);教育部人文社会科学研究项目(12YJC790072)

摘　　要：以西安城区2000,2005和2010年的土地利用图为基础,结合移动窗口法和迭代自组织聚类法,实现城市发展对其周边地区影响的多尺度分析与聚类并绘制成图,按照城市化水平的高低,将其分为:城市核心区、半城市化区、城市边缘区和乡村地区。结果表明,在局地尺度(0.81 km)上,2010年城市核心区、半城市化区、城市边缘区和乡村地区的城市建设用地比例分别为96%,59%,38%和8%。城市核心区集中在碑林区、莲湖区和雁塔区,是西安城市化水平和质量最高的地区,半城市化区多呈斑块状镶嵌在城市核心区周围,城市边缘区连片环绕城市核心区分布,乡村地区分布在区域最外围。在区域尺度(16.11 km)上,各类地区的城市建设用地比例逐年增加,西安城区整体的城市化质量和水平逐步提高。In order to analyze urban impacts on its surrounding area across multiple spatial-temporal scales, taking time-series land cover maps （2000--2005--2010） of Xi＇ an as an example, this article employed a moving window operation with different window sizes to realize multiple scale analysis combined with an iterative-self organ- ization algorithm to map and classify the urban influence into four clusters which are core urban area, peri-urban area, urban fringe area and rural area. Our results indicate that urban influence is not limited to its borders physically, but exhibiting spatial gradients and expanding from a local scale to a regional scale with different urban influence degrees. At local scale, i. e. , 0. 81 km window size, the percentages of urban construction land in core urban area, peri-urban area, urban fringe area and rural area were 96% , 59% , 38% and 8% respectively in 2010. The most developed area, core urban area was mostly in Beilin District, Lianhu District and Yanta District. Most periurban area consisted of many small patches which were mostly around the core urban area. Urban fringe area surrounded the core urban area with many peri-urban patches embedded in. The least developed area, rural area surrounded the urban fringe area as the periphery of the study region. At regional scale, i. e. , 16.11 kin, the percentage of urban construction land in each land use cluster increased obviously from 2000 to 2010 which indicated that this region had experienced better quality of urbanization and its regional urbanization level had increased.

关 键 词：城市化 空间格局 土地利用 多尺度窗口分析 西安市 

分 类 号：K901.8[历史地理—人文地理学]