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Characterizing the urban spatial structure using taxi trip big data and implications for urban planning

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Frontiers of Earth Science 2021年第1期15卷 70-80页

作者： Haibo LI Xiaocong XU Xia LI Shifa MA Honghui ZHANG School of Geography and Planning Guangdong Key Laboratory for Urbanization and Geo-simulationSunYat-sen UniversityGuangzhou 510275China School of Geographic Sciences Key Lab.of Geographic Information Science(Ministry of Education)East China Normal UniversityShanghai 200241China School of Architecture and urban Planning Guangdong University of Technology Guangzhou 510090China Guangdong Guodi Planning Science Technology Co. ltdGuangzhou 510275China

urban spatial structure is an important feature for assessing the effects of urban *** an urban spatial structure cannot only help in identifying the problems with current planning but also provide a basic reference for future *** of spatial structure is a difficult task for planners and researchers and this has been usually carried out by comparing different land use ***,these methods cannot efficiently reflect the influence of human *** the wide application of big data,analyzing data on human travel behavior has increasingly been carried out to reveal the relationship between urban spatial structure and urban *** this study,we constructed a human-activity space network using the taxi trip big *** at different scales revealed the hierarchy and redundancy of the spatial structure for assessing the appropriateness and shortcomings of urban *** method was applied to a case study based on one-month taxi trip data of Dongguan *** urban spatial structures at different scales were retrieved and utilized to assess the effectiveness of the master plan designed for 2000 to 2015 and 2008 to 2020,which can help identify the limitations and improvements in the spatial structure designed in these two versions of the master *** also evaluated the potential effect of the master plan designed for 2016 to 2035 by providing a reference for reconstructing and optimizing future urban spatial *** analysis demonstrated that the taxi trip data are important big data on social spatial perception,and taxi data should be used for evaluating spatial structures in future urban planning.

关键词： urban structure taxi GPS data complex networks community management

Socioeconomic impact of urban redevelopment in inner city of Ningbo

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第8期7卷 1386-1395页

作者： BACHOUR Bachir Department of Architecture Southeast University Nanjing 210096 China

Since market-oriented economy reform, China has experienced significant changes in urban landscapes and the internal structure of cities. Housing marketization provides an opportunity for households to choose their residences. However, not all households benefit equally from residential relocation. Residential relocation in urban China has relatively strong association with the household’s position within the spectrum from state redistribution to market reward than with life cycles and consequent adjustment of housing demand, which are the primary reasons for residential mobility in a mature market. In this research we focused on social aspects, mainly relating to the impact of urban redevelopment in inner city of Ningbo and the resultant potential housing problem. This research is based on a questionnaire survey that was conducted in three neighborhoods redeveloped at different time periods in the past fifteen years. The findings suggest that new strategy of redevelopment of the integrated envi-ronment of the old city while still improving the living condition for its residents can be heard due to the efforts of many people at various positions. Yet, many things need to be done to change people’s ideas: information and education through newspapers, academic discussions through academic journals, conferences, and reports to decision makers.

关键词： urban redevelopment Housing reform Neighborhood urban structure Socioeconomic Social interaction

The fractal or scaling perspective on progressively generated intra-urban clusters from street junctions

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International Journal of Digital Earth 2023年第1期16卷 1944-1961页

作者： Biao He Renzhong Guo Minmin Li Ying Jing Zhigang Zhao Wei Zhu Chen Zhang Chengyue Zhang Ding Ma Research Institute for Smart Cities School of Architecture and Urban PlanningShenzhen University&MNR Technology Innovation Center of Territorial&Spatial Big Data&MNR Key Laboratory of Urban Land Resources Monitoring and Simulation&Guangdong-Hong Kong-Macao Joint Laboratory for Smart CitiesShenzhenPeople’s Republic of China Guangdong Laboratory of Artificial Intelligence and Digital Economy(SZ) ShenzhenPeople’s Republic of China Ningbo Institute of Technology School of EconomicsZhejiang UniversityNingboPeople’s Republic of China School of Resource and Environmental Sciences Wuhan UniversityWuhanPeople’s Republic of China

The underlying complexity of urban space can be manifested by its fractal forms and scaling *** paper examines these characteristics at the intra-urban scale through the lens of clustered street junctions(including road ends)in two Chinese metropolitan areas:Beijing and *** derived the cluster sets with Euclidean distance thresholds starting at 100 meters(m)and ending at 1000 m,and outlined each cluster using a concave-hull method to maintain their original irregular *** each delimited cluster,we examined four urban attributes:gross domestic product,number of street nodes,polygon area,and *** analysis revealed that power law distribution applied to almost every cluster set in terms of the four attributes,but varied from one attribute to another or from city to city,represented primarily byfluctuated power law exponents and ht-index values whose profiles along with the cluster growth can effectively characterize the urban ***,we computed the spectrum of intra-urban scaling exponents with cluster size increments,contributing new insights into the allometric relationships between urban configuration and function.

关键词： Spatial clustering urban structure urban function power law intra-urban scaling law

Spatio-temporal characteristics of intra-urban land cover in the cities of China and USA from 1978 to 2010

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Journal of Geographical Sciences 2015年第1期25卷 3-18页

作者： CHI Wenfeng SHI Wenjiao KUANG Wenhui Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China

urban land cover has major impacts on a city＇s ecosystem services and the inherent quality of its urban residential environment. The spatio-temporal distribution of impervious surface area and green areas in Chinese cities has exhibited a significantly marked difference in comparison with USA cities. This study focused on monitoring and comparing the spatio-temporal dynamics, land cover patterns and characteristics of functional regions in six Chinese （n=3） and USA （n=3） cities. The study data were collated from Landsat TM/MSS imagery during the period 1978-2010. Results indicate that Chinese cities have developed compactly over the past three decades, while development has been notably dispersed among USA cities. Mean vegetation coverage in USA cities is approximately 2.2 times that found amongst Chinese urban agglomerations. Land use types within Chinese cities are significantly more complex, with a higher density of impervious surface area. Conversely, the central business district （CBD） and residential areas within USA cities were compdsed of a lower proportion of impervious surface area and a higher proportion of green land. Results may be used to contribute to future urban planning and administration efforts in both China and the USA.

关键词： urban structure impervious surface area vegetation China USA remote sensing

urban structural evolution over a century in Changchun city, Northeast China

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Journal of Geographical Sciences 2018年第12期28卷 1877-1895页

作者：匡文慧颜凤芹 Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research CAS Northeast Institute of Geography and Agroecology CAS

Knowledge on urban land-use change and its driving forces has vital significance in the practice of urban planning and management. However, the characteristics of historical, long-term changes and their quantitative relationships with the urban environment are still poorly understood. Based on multi-source data, including remote sensing imageries, large-scale topographic maps, historical maps, multi-temporal city maps, and other urban thematic maps, high-quality spatial information on urban land use in the built-up area of Changchun has been extracted for 1898, 1932, 1954, 1976, 1990, 2002, and 2012 by means of geographic information systems and remote sensing. We found that the land-use structure and spatial configuration has undergone tremendous alterations according to urban function in the 100-year history of Changchun city. The built-up area of Changchun expanded from 2.26 km^2 in 1898 to 328.12 km^2 in 2012, increasing about 144 times over the past century. Historically, the development of Changchun can be categorized into three stages: the initial forming stage, the old industrial development stage, and the modern metropolis development stage. Commercial and industrial land expanded rapidly following the founding of the People's Republic of China in 1949, with an increase from 1.74 km^2 in 1954 to 15.91 km^2 in 2012, and from 16.45 km^2 in 1954 to 107.05 km^2 in 2012, respectively. Although there was substantial growth in residential land use(from 1.81 km^2 in 1898 to 113.95 km^2 in 2012), the area percentage of residential land decreased continuously(from 80.09% in 1898 to 34.73% in 2012). Moreover, it was noted that the spatial configuration and structural percentage for commercial, industrial, and residential lands and others had tremendous divergences at different stages. These divergences of land-use structure occurred between the stages and were associated with social regimes and the functional orientation of urban society across the 100 years of histor

关键词： urban expansion land use urban structure driving factors Changchun city China

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中国城镇化“十一五”回顾和“十二五”展望

区域与城市经济