【摘要】：不同城市要素的集聚現(xiàn)象具有不同的空間模式,定量化研究城市要素集聚模式的差異和聯(lián)系對于理解城市發(fā)展機理、合理制定城市規(guī)劃具有重要意義。本文以武漢市為例,獲取不透水表面、商業(yè)服務業(yè)網點(POI)、人口、容積率、城市道路等城市要素數(shù)據(jù);采用核密度估計法識別城市主次中心,從城市要素的分布形態(tài)、集聚程度、集聚模式等來研究城市要素的空間分布格局特征。研究發(fā)現(xiàn),武漢市呈現(xiàn)"一主七副"的多中心結構,各城市要素從城市中心向外呈反S型的圈層遞減。采用集聚度指數(shù)衡量城市要素的集聚水平,結果顯示商業(yè)POI、人口密度的集聚程度最大,其次是容積率、道路密度、不透水表面占比。高度集聚的商業(yè)POI、人口密度呈現(xiàn)出點狀模式與帶狀模式相結合的分布模式,中度集聚的道路密度、容積率呈現(xiàn)點狀模式、環(huán)狀模式與軸狀模式相結合的分布模式,低度集聚的不透水表面密度主要表現(xiàn)為環(huán)狀模式。城市中心的吸引、立體空間開發(fā)等促進了城市要素的向心集聚,交通干線、稀缺景觀資源的廊道效應等重塑了城市要素的空間分布形態(tài)。
[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.
【作者單位】： 武漢大學資源與環(huán)境科學學院;武漢大學地理信息系統(tǒng)教育部重點實驗室;武漢大學測繪遙感信息工程國家重點實驗室;
【基金】：國家自然科學基金項目(41571385)~~
【分類號】：F127

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本文編號：2522641