摘要
本文以RS和GIS技术为支撑,以西咸一体化进程为研究对象,基于多时相TM/ETM+及相关统计数据,采用监督分类和归一化裸露指数(NDBI)等方法提取西安、咸阳两市的城市空间特征信息,结合地学统计方法,定量研究了城市扩张强度、紧凑度等指标,并探讨了影响西咸一体化进程的因子。得出:西咸一体化政策的出台是主导西咸两市对向不断扩张的核心因素,社会经济发展与城镇人口的不断增长是加速两市边缘不断向外扩张的主要因素,且人居环境的改善和城市交通的发展对两市扩张空间表现出明显的牵引力作用。
Based on the technology of the Remote Sensing and the Geography Information System, Xi＇an and the Xianyang city area expansion information were extracted fi＇om multi-temporal Landsat data using Supervised Classification and Normalized Difference Barren Index（NDBI）. With the help of the index as Construction Land Expansion Intensity and Compact Ratio, the main factors affecting the urban integration were also identified in this paper. The conclusion was obtained as follows ： the policy of integration process was the leading factor, socio-economic development and urban population growth accelerated the expansion of cities edges, and the environ- mental improvement and urban transport development between the two cities showed a clear space for expansion.
出处
《测绘科学》
CSCD
北大核心
2011年第1期102-104,72,共4页
Science of Surveying and Mapping
基金
国家重大基础研究项目(973)(2007CB407203)
西安建筑科技大学青年科技基金(DA02018)
关键词
城市扩张
西咸一体化
监督分类
NDBI
扩展强度
紧凑度
驱动力
urban expansion
the integration of Xi＇an and Xianyang
supervised classification
NDBI
expansion intensity
compact ratio
driving force
