商业空间“规模-效益”耦合评价与机制研究——以长沙中心城区为例

THE SCALE-BENEFIT COUPLING RELATIONSHIP AND MECHANISM OF COMMERCIAL SPACE:A CASE STUDY OF THE CENTRAL URBAN AREA OF CHANGSHA

基于网络点评数据,首先,从城市层面分析了商业空间规模和效益的耦合与演变,发现:二者在时序上呈现出动态耦合关系,在空间上具有“中心-外围”圈层分异特征。具体而言,中心圈层耦合度较高,效益水平整体高于周边地区;外围圈层空间效益的增长滞后于规模的增长,存在发展不协调问题,但随着新兴商业中心逐步发展成熟,耦合动态水平有所提升,耦合区域沿空间扩张方向呈跳跃式推移。其次,从单体层面进一步分析发现,规模和效益不是简单的线性正比关系,过度规模反而导致单位效益下降,进而呈现出较低的耦合水平。外围圈层单体规模向超大型化发展明显,不耦合现象尤为显著。最后,分别从政策规划、经济人口、区位交通、业态需求及环境设施5方面探讨了耦合动力机制及影响差异。

Based on the online comment data,this article firstly analyzes the coupling relationship between commercial space scale and benefit at the city level.The result reveals that the scale and benefit are dynamically coupled in different development stages,and show a feature of spatial differentiation of the“center-periphery”layer.More specifically,the coupling degree of the central layer is higher,which reflects an overall higher benefit level of the central area.Meanwhile,the spatial benefit growth in peripheral layer lags behind its spatial scale expansion,and the mismatch is obvious.Along with the gradual development and maturity of newly constructed commercial centers,the coupling level is dynamically improved,and the coupling region moves by leaps along the spatial expansion direction.Secondly,analyzed from the individual commercial facility level,it shows that the relationship between scale and benefit is not a simple linear proportional relationship,and excessive scale leads to the decrease of coupling degree and unit benefit level.Because of the obvious trend of super-large scale of individual commercial facilities,the decoupling is particularly significant in peripheral layer.Finally,the coupling dynamic mechanism and difference are discussed from the following five aspects:urban policy and planning,economy and population,location and transportation,demand of industrial forms,and environmental facilities.