基于景观空间指标与移动窗口的济南城市空间格局变化

Spatial pattern change of Jinan City based on landscape metrics and moving window method

应用高分辨率遥感数据,基于ArcGIS、FRAGSTATS软件平台,采用移动窗口、转移矩阵和梯度分析结合的方法,定量分析了1996—2009年济南市城市土地利用景观空间指标,特别是建设用地的空间格局及其变化特征。结果表明,移动窗口方法能更好地挖掘城市土地利用变化过程,并将其更加准确地与土地利用格局变化相连接;在研究时段内,济南市城市建设用地迅速增加,而城市绿地和农业用地明显减少;该市建设用地的空间发展不均匀,城市发展呈现不规则同心圆结构,这与济南城市发展的政策导向、城市绿地空间的宜人性以及特殊的地理形态紧密相关。研究结果将有利于指导城市土地利用的规划和城市自然资源的管理与保护。

Based on high resolution remote sensing data, and by using the methods of moving window, transformation matrices, and gradient analysis, this paper quantitatively analyzed the spatial patterns and change characteristics of the land use types, especially of built-up area, in Jinan City in 1996-2009. The analysis was implemented with ArcGIS and FRAGSTATS platforms, and the landscape metrics was taken as the assessment indicator. Among the methods used, moving window could better explore the processes of land use change, and better link these processes with the changes of land use pattern. In the study period, the urban built-up area in the city increased rapidly, while the green space and agricultural land decreased significantly. The expansion of the built-up area was anisotropic, and the built-up area was structured as an irregular concentric cycle, which was closely related to the policy guideline of urban development, agreeableness of urban green spaces, and unique urban topography there. This study would benefit urban land use planning and natural resources management and protection.