基于多源数据的北京市城市中心及其空间结构研究  

Study on Beijing urban center and its spatial structure based on multi-source data

作　　者：吴健宇 袁涛[1,2] 袁春 李洁[1] 林秀锋 WU Jian-yu;YUAN Tao;YUAN Chun;LI Jie;LIN Xiu-feng(School of Land Science and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Key Laboratory of Land Consolidation and Rehabilitation,Ministry of Nature Resources,Beijing 100034,China)

机构地区：[1]中国地质大学(北京)土地科学技术学院,北京100083 [2]自然资源部土地整治重点实验室,北京100034

出　　处：《资源开发与市场》2023年第3期257-265,376,共10页Resource Development & Market

基　　金：自然资源部土地利用重点实验室开放课题(编号:20211511182)。

摘　　要：首先利用NPP-VIIRS夜间灯光数据并基于改进的阈值二分法识别北京市城市建成区,其次利用多源地理大数据和局部等值线树算法识别北京市城市中心,最后结合现行规划蓝图分析提取结果。结果表明:一般而言,基于夜间灯光亮度等值线树能够识别出基础设施完善且集中连片的产业园区、交通枢纽中心或者公共用地作为城市中心。基于手机信令人口密度等值线树能够识别出人类活动密集的居住用地或景点绿地作为城市中心。基于POI核密度分析数据等值线树能够识别出经济活动繁荣的商业用地作为城市中心。最后,通过发挥各种数据源的不同优势进一步验证发现北京市城市布局与城市战略定位相一致,北京市呈现明显的“一核一主一副,两轴多点一区”的空间结构。在对比验证提取结果的基础上,针对未能识别出的区域提出解决办法。First,this paper used the NPP-VIIRS nighttime light data to identify urban built-up areas of Beijing with an improved threshold dichotomy,then used the multi-source geographic big data and local contour tree algorithms to identify urban centers of Beijing,and finally analyzed the extraction results using current blueprints.The results showed that:generally speaking,the contour tree of nighttime light identified industrial parks,transportation hubs or public land with complete infrastructure and contiguous areas as urban centers.The contour tree of cell phone signaling population density detected residential land or scenic green areas with intensive human activities as urban centers.The contour tree of the POI kernel density analysis data recognized the commercial land with prosperous economic activity as urban centers.Finally,it found that by giving full play to the advantages of various data sources,the urban layout of Beijing could be further verified and found to be consistent with the strategic positioning of the city.Beijing had an obvious spatial structure of“one core,one main and one auxiliary,two axes,multiple points and one area”.Based on the comparison and verification of the extraction results,this paper put forward the solutions for the unrecognized areas.

关 键 词：多源数据 局部等值线树算法 城市中心 城市空间结构 北京 

分 类 号：TU984[建筑科学—城市规划与设计]