融合空间距离测度市场分割指数的方法设计与应用

Designing and Applying of Market Segmentation Index Based on Spatial Distance Measurement

市场分割是具有空间属性的概念,但是已有市场分割指数的测度方法普遍忽略了关键的空间因素。鉴于此,基于广泛使用的相对价格法,融合地理空间距离、经济空间距离和产业空间距离三个因素,提出了空间距离法测度市场分割指数。为检验空间距离法的测度效果,以扩容后的长三角城市群作为应用示例研究对象,采用地理空间分异可视化、箱线图离群点侦测和散点拟合曲线等方法,分析了长三角城市群的市场分割动态以及区域一体化发展水平等,并与价格法的结果进行对比分析。研究结果表明,空间距离法能够较好地测度市场分割程度及其动态特征,相较于价格法更具准确性和稳定性。长三角地区的市场分割程度总体在下降,一体化水平在上升,但同时区域市场的中心—外围结构特征愈发显著,需要引起重视。

Market segmentation is a concept with spatial attributes,but the existing measurement methods of market segmentation index generally ignore the key spatial factors.Based on the widely used relative price method,the spatial distance method is put forward to calculate the market segmentation index by integrating three factors:geographical space distance,economic space distance and industrial space distance.In order to test the measurement effect of the spatial distance method,the expanded Yangtze River Delta Urban Agglomeration is taken as an example study object.The methods of visualization of geographical spatial differentiation,detection of outliers of box line map and fitting curve of scattered points,etc.are used to analyze the market segmentation dynamics and the level of regional integration development of the urban agglomeration in the Yangtze River Delta which is compared with the price method.The results show that the spatial distance method can measure the market segmentation and it is more accurate and stable compared with the price method.The market segmentation degree of Yangtze River Delta region is generally declining,and the integration level is rising.However,the central peripheral structure of regional market is more and more obvious,which needs to be paid attention to.