中等城市人居环境空间分异研究--以丹东市为例

The Preliminary Study of Spatial Differentiation of Urban Human Settlement in Medium-sized Cities——A Case of Dandong

城市人居环境的空间分异已经成为城市学、社会学、地理学等学科研究的热点之一,我国对于城市空间分异的研究大多集中于大城市,很少涉及中等城市。实际上,在我国快速城市化进程中,人居环境空间分异并不仅仅存在于大城市,在广大中等城市中也已初见端倪。我们以中等城市——丹东市为例,通过调查走访获取数据,建立数学模型,使用MapInfo和Surfer作图软件进行数据分析和图像处理,探讨了丹东市人居环境空间分异的特点。研究结果表明:(1)丹东市作为典型的中等城市,其内部人居环境已经异化,显现出明显的空间分异趋势;(2)人居环境空间分异的总趋势是沿鸭绿江岸线向陆地呈扇形逐级递减;(3)扇形外围——西北部地区的人居环境空间分异打破逐级递减和平行扩散的规律,在局部形成小范围的次级核心点。

Spatial differentiation of urban settlement environment has becoming one of the hot focuses of re- search subjects, such as the urban, sociology, geography and etc. But these studies mostly concentrate in the me- tropolis. And these of medium-sized cities have not been reported yet. In fact, in our rapid urbanization process, the spatial differentiation of urban settlement environment not only exists in the metropolis, but also has begun in many medium-sized cities. It takes Dandong a medium-sized city as an example, by surveying through out the whole city, establishing mathematical models, using mapInfo and surfer software to deal with data analysis and im- age processing, it discusses the spatial differentiation characteristics of the settlement environment of Dandong City. The results shows ： （ 1 ） The trends of spatial differentiation of urban settlement of Dandong, which is a typical medi- um-sized city, has begun and become more and more obviously. （2）The general trend of spatial differentiation of urban settlement of Dandong is declining from the Yalu river shoreline to the inland in fan-shaped. （3）Spatial dif- ferentiation of urban settlement in the external area of fan-shaped, northwest region, breaks the gradual declining and the parallel laws, and formats secondary core point in local small-scale.