Wang Hou-jun, Li Xiao-yu, Zhang Zu-lu, He Xing-yuan, Chen Wei, Chen Yan-bin, Hu Jian-bo
College of Population, Resource and Environment, Shandong Normal University, Ji' nan 250014, China.
Ying Yong Sheng Tai Xue Bao. 2008 Dec;19(12):2673-9.
Based on the 1979, 1992, 2001 and 2006 satellite images, the spatial expansion information of Shenyang City was extracted by human-computer interactive method, and the temporal and spatial expansion characteristics of Shenyang City as well as their driving forces were analyzed from the aspects of growth intensity, center coordinates, compact index, fractal index, and elasticity coefficient, with the help of the statistic and analytic functions of GIS for the spatial data. The results showed that in 1979-2006, both the urban build-up area and its expansion rate in Shenyang were increased continuously, and reached the maximum in 2001-2006. The urban expansion showed obvious spatial heterogeneity, with the gravity shifted to the southwest. In the meantime, the compact index was decreasing while the fractal index was increasing, implying that the urban spatial configuration in Shenyang became more and more complex. Natural environmental factors, economic development, population growth, traffic infrastructure construction, and government policy and planning were the main driving forces of the urban expansion.
基于1979年、1992年、2001年和2006年的卫星影像，采用人机交互方法提取沈阳市的空间扩展信息，并借助GIS对空间数据的统计和分析功能，从增长强度、中心坐标、紧凑指数、分形指数和弹性系数等方面分析了沈阳市的时空扩展特征及其驱动力。结果表明，1979—2006年，沈阳市建成区面积及其扩展速率均持续增加，并在2001—2006年达到最大值。城市扩展呈现出明显的空间异质性，重心向西南转移。与此同时，紧凑指数减小，分形指数增大，表明沈阳市城市空间形态变得越来越复杂。自然环境因素、经济发展、人口增长、交通基础设施建设以及政府政策和规划是城市扩展的主要驱动力。
