武汉市城市空间集聚要素的分布特征与模式
发布时间：2019-08-03 15:28
【摘要】：不同城市要素的集聚现象具有不同的空间模式,定量化研究城市要素集聚模式的差异和联系对于理解城市发展机理、合理制定城市规划具有重要意义。本文以武汉市为例,获取不透水表面、商业服务业网点(POI)、人口、容积率、城市道路等城市要素数据;采用核密度估计法识别城市主次中心,从城市要素的分布形态、集聚程度、集聚模式等来研究城市要素的空间分布格局特征。研究发现,武汉市呈现"一主七副"的多中心结构,各城市要素从城市中心向外呈反S型的圈层递减。采用集聚度指数衡量城市要素的集聚水平,结果显示商业POI、人口密度的集聚程度最大,其次是容积率、道路密度、不透水表面占比。高度集聚的商业POI、人口密度呈现出点状模式与带状模式相结合的分布模式,中度集聚的道路密度、容积率呈现点状模式、环状模式与轴状模式相结合的分布模式,低度集聚的不透水表面密度主要表现为环状模式。城市中心的吸引、立体空间开发等促进了城市要素的向心集聚,交通干线、稀缺景观资源的廊道效应等重塑了城市要素的空间分布形态。
[Abstract]:The agglomeration phenomenon of different urban elements has different spatial models. It is of great significance to quantitatively study the differences and connections of urban factor agglomeration patterns for understanding the mechanism of urban development and making rational urban planning. Taking Wuhan as an example, this paper obtains the data of urban elements such as (POI), population, volume rate, urban road and so on, and uses the nuclear density estimation method to identify the primary and secondary centers of the city, and studies the spatial distribution pattern characteristics of the urban elements from the distribution form, agglomeration degree and agglomeration mode of the urban elements. It is found that Wuhan has a multi-center structure of "one main and seven pairs", and the urban elements decrease in reverse S-shaped circle from the center of the city to the outside. The concentration index is used to measure the agglomeration level of urban elements. the results show that the agglomeration degree of commercial POI, population density is the largest, followed by volume rate, road density and the proportion of impermeable surface. The population density of commercial POI, with high agglomeration shows the distribution mode of the combination of dot model and banded model, the road density and volume rate of moderate agglomeration are punctate model, the distribution mode of annular model and axial model is the combination of annular model, and the impermeable surface density of low agglomeration is mainly annular model. The attraction of urban center and the development of three-dimensional space promote the concentric agglomeration of urban elements, the traffic trunk lines, the corridor effect of scarce landscape resources and so on, which reshape the spatial distribution of urban elements.
【作者单位】： 武汉大学资源与环境科学学院;武汉大学地理信息系统教育部重点实验室;武汉大学测绘遥感信息工程国家重点实验室;
【基金】：国家自然科学基金项目(41571385)~~
【分类号】：F127
本文编号：2522641
[Abstract]:The agglomeration phenomenon of different urban elements has different spatial models. It is of great significance to quantitatively study the differences and connections of urban factor agglomeration patterns for understanding the mechanism of urban development and making rational urban planning. Taking Wuhan as an example, this paper obtains the data of urban elements such as (POI), population, volume rate, urban road and so on, and uses the nuclear density estimation method to identify the primary and secondary centers of the city, and studies the spatial distribution pattern characteristics of the urban elements from the distribution form, agglomeration degree and agglomeration mode of the urban elements. It is found that Wuhan has a multi-center structure of "one main and seven pairs", and the urban elements decrease in reverse S-shaped circle from the center of the city to the outside. The concentration index is used to measure the agglomeration level of urban elements. the results show that the agglomeration degree of commercial POI, population density is the largest, followed by volume rate, road density and the proportion of impermeable surface. The population density of commercial POI, with high agglomeration shows the distribution mode of the combination of dot model and banded model, the road density and volume rate of moderate agglomeration are punctate model, the distribution mode of annular model and axial model is the combination of annular model, and the impermeable surface density of low agglomeration is mainly annular model. The attraction of urban center and the development of three-dimensional space promote the concentric agglomeration of urban elements, the traffic trunk lines, the corridor effect of scarce landscape resources and so on, which reshape the spatial distribution of urban elements.
【作者单位】： 武汉大学资源与环境科学学院;武汉大学地理信息系统教育部重点实验室;武汉大学测绘遥感信息工程国家重点实验室;
【基金】：国家自然科学基金项目(41571385)~~
【分类号】：F127
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