Zhou Rui, Li Yue-Hui, Hu Yuan-Man, Xi Feng-Ming, Shan Tao, He Hong-Shi, Liu Miao, Wang Jin-Nian
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Ying Yong Sheng Tai Xue Bao. 2009 Oct;20(10):2446-54.
By using 1985, 1995, 1997, 2000 and 2004 satellite images and GIS technology, three indices including built-up area density, expansion intensity index, and fractal dimension were chosen to analyze the spatiotemporal characteristics, spatial differentiation, and morphological changes of urban and rural built-up areas in Shenyang City in 1985-2004, with the main driving factors discussed. In the study period, the high-density area of urban built-up area in the City increased year by year, and that of rural built-up area changed slightly before 1997 but increased gradually thereafter. The increased area, expansion speed, and expansion intensity of built-up area were evidently greater in urban than in rural area. An obvious spatial differentiation was observed in the expansion of built-up area between urban and rural areas, with the high-speed expansion mainly concentrated in urban area. The fractal dimension in urban area increased gradually, which meant that the integrated configuration of urban area became more and more complex, while that in rural area changed irregularly, because of the lack of reasonable planning and construction. Economic development, population growth, transportation, natural environment, policy-guiding, and urban planning were the main driving forces of the expansion of built-up areas in Shenyang City.
利用1985年、1995年、1997年、2000年和2004年的卫星影像及地理信息系统（GIS）技术，选取建成区密度、扩展强度指数和分形维数3项指标，分析1985—2004年沈阳市城乡建成区的时空特征、空间分异及形态变化，并探讨其主要驱动因素。研究期间，沈阳市城市建成区高密度区逐年增加，农村建成区高密度区在1997年前变化较小，之后逐渐增加。建成区的增加面积、扩展速度和扩展强度在城市明显大于农村。城乡建成区扩展存在明显的空间分异，高速扩展主要集中在城市地区。城市地区的分形维数逐渐增加，这意味着城市地区的整体形态变得越来越复杂，而农村地区由于缺乏合理规划建设，分形维数变化不规则。经济发展、人口增长、交通、自然环境、政策引导和城市规划是沈阳市建成区扩展的主要驱动力。
