基于高分影像分类的易门县城镇扩展及驱动机制  

Town Expansion and Driving Mechanism of Yimen County Based on High Spatial Resolution Classification

作　　者：陈国平[1,2] 骆延青 李亚筠[1] 欧阳慧[1] 张伟红[1] 张晓伦[1] 

机构地区：[1]昆明冶金高等专科学校测绘学院,云南昆明650033 [2]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《昆明冶金高等专科学校学报》2017年第5期25-33,共9页Journal of Kunming Metallurgy College

基　　金：昆明冶金高等专科学校科研基金:滇中城市群土地利用空间多尺度时空演化及模拟(2016xjzk01);国家自然科学基金:滇中城市群国土空间格局多尺度演化模拟及优化配置(41761081)

摘　　要：遥感和地理信息技术相结合是实现对变化快速的城镇扩展进行变化检测研究的最佳手段之一。获取城镇扩展的基础数据,分析城镇扩展的空间分异特征及城镇体系结构特征,揭示城镇扩展的驱动机制有助于政府管理部门做出正确的决策。采用面向对象分类技术,以高分卫星影像为主要数据源,对易门县城区2009—2013年城镇扩展进行分析。结果表明:(1)研究区谷歌影像的最佳分割尺度为120,形状因子为0.6,紧致度因子为0.7。面向对象分类后总体精度为84%、Kappa系数72.9%;(2)2009—2013年扩展变化率为38.26%、扩展动态度为9.57%、扩展强度0.02、扩展综合指数为0.61;(3)影响易门县城镇扩展变化的驱动因素依次为:城市化水平、非农业人口、工业用地面积,关联度数值分别为0.91、0.85和0.73。The combination of high score image and geographic information technology is one of the best means to achieve real-time and accurate monitoring of rapid urban expansion. Obtaining the basic data of urban expansion,analyzing the spatial differentiation characteristics of urban expansion and the structural characteristics of urban architecture,revealing the driving mechanism of urban expansion and making the government management make the right decision. The object-oriented classification technology is used to monitor the urban expansion of Yimen County from 2009 to 2013,and the monitoring results are analyzed with high score satellite imagery as the main data source. The results show that:( 1) the best scale of Quick Bird image is 50,the shape factor is 0. 6,the compactness factor is 0. 7,the overall classification accuracy is 86%,and the Kappa coefficient is 77. 7%,which can meet the research needs;( 2) In the study area,the rate of change is 38. 26%,the expansion degree is 9. 57%,the expansion intensity is0. 02,and the extended comprehensive index is 0. 61;( 3) Through the gray relational model,the driving force of urban expansion is : Urbanization level,non-agricultural population,industrial land area,the correlation value were 0. 91,0. 85 and 0. 73.

关 键 词：城镇扩展 驱动力 灰色关联度 

分 类 号：F301.24[经济管理—产业经济]