华北平原中小城市扩展的时空特征研究——以聊城市为例

发布时间：2018-03-16 16:47

本文选题：城市空间扩展　切入点：城市形态　出处：《广西师范大学学报(自然科学版)》2017年04期 　论文类型：期刊论文

【摘要】：以1987、1990、1994、1998、2002、2007、2011、2015年8期的Landsat TM/OLI遥感影像为基础,利用GIS的空间分析方法,选取城市扩展强度、分形维数、紧凑度、城市重心坐标等指标,研究华北平原腹地的山东省聊城市1987年以来的城市空间扩展特征;并结合相关统计数据对聊城市城市扩展的驱动力进行分析。结果表明:1987—2015年,聊城市建成区规模逐年扩大,由1987年的20.81km~2扩展到2015年的123.87km~2,年均扩展面积3.68km~2,扩展强度指数达17.69%。城市紧凑度整体上呈现波动下降趋势;分形维数先增加后减小再增加;城市扩展方向总体上呈现向东波动迁移的特征,城市形态呈现"扩张-内部填充-再扩张"的趋势。驱动力方面,自然地理条件是城市扩展的基础,经济发展与城市扩展相互促进,交通基建和国家政策规划是影响聊城市城市扩展特征的主要驱动因素。
[Abstract]:Based on the remote sensing images of Landsat TM/OLI in 1987-1990 / 1994-1998,2007.2011 and 8 issues of 2015, using the spatial analysis method of GIS, the indexes of urban expansion intensity, fractal dimension, compactness, urban barycenter coordinate and so on are selected. This paper studies the characteristics of urban spatial expansion in Liaocheng City, Shandong Province, in the hinterland of North China Plain since 1987, and analyzes the driving force of Liaocheng City expansion with relevant statistical data. The results show that the scale of Liaocheng completed area expands year by year from 1987 to 2015. From 20.81 km2 in 1987 to 123.87 km2 in 2015, the average annual expansion area is 3.68 kmm2, and the expansion intensity index is 17.699.The urban compactness shows a downward trend of fluctuation, the fractal dimension increases first and then decreases and then increases. The direction of urban expansion generally presents the characteristics of eastward fluctuation and migration, and the urban morphology shows the trend of "expansion-internal filling and re-expanding". In terms of driving force, the physical geographical conditions are the basis of urban expansion. Economic development and urban expansion promote each other. Transportation infrastructure and national policy planning are the main driving factors that affect the characteristics of urban expansion in Liaocheng city.
【作者单位】：聊城大学环境与规划学院;北京林业大学水土保持学院;中国环境科学研究院生态文明研究中心;海南师范大学地理与环境科学学院;
【基金】：聊城大学博士基金(318051530) 国家自然科学基金(41201602)
【分类号】：F299.27

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