基于夜间灯光和POI数据的昆明市城市空间经济结构分析

Urban Spatial Economic Structure Analysis of Kunming City Based on Nighttime Light and POI Data

摘要: 城市空间经济结构的研究对于城市科学规划和深入了解城市发展现状具有重要意义。本文通过将夜间灯光数据与兴趣点数据相结合，构建了多重城市经济发展指数(MUEDI)，综合“当前经济发展水平”，“经济影响力”和“经济协调度”三个层面研究城市空间经济结构。实验以中国西南的云南省昆明市为研究区域，结果表明：1) 主城区占有昆明市最多的社会经济要素资源，它们之间的社会经济活动最为剧烈。在主城区内部，五华区的社会经济联系总量(TR)在昆明市是最高的。2) 未来，昆明市的城市空间经济结构将以主城区和呈贡区为多中心进行发展，经济重心有可能向东南方向偏移。3) 通过分析主城区之外的社会经济联系和全市交通线路的空间分布模式，发现了以呈贡区为主的另一个城市集群“呈贡–安宁–晋宁”。

Abstract: The study of urban spatial economic structure is important for scientific urban planning and in-depth understanding of urban development. In this paper, the Multiple Urban Economic Development Index (MUEDI) is constructed by combining nighttime lighting data and Point of Interest (POI) data to study the spatial economic structure of cities at three levels: “current economic development level”, “economic influence” and “economic coordination”. The MUEDI was constructed to study the spatial economic structure of cities in three dimensions: “Current economic development level”, “Economic influence” and “Economic coordination”. The results show that: 1) The main urban area has the most socio-economic factors and resources in Kunming, and the socio- economic activities among them are the most intense. Within the main urban area, the total socioeconomic relation (TR) of Wuhua District is the highest in Kunming. 2) In the future, the urban spatial economic structure of Kunming City will be developed with the main urban area and Chenggong District as the polycenter, and the economic center of gravity is likely to shift to the southeast. 3) By analyzing the spatial distribution pattern of socio-economic links and traffic routes outside the main urban area, another urban cluster “Chenggong-An Ning-Jinning” is found, mainly in Chenggong District.