| The development of urban agglomerations is affected by multiple factors.The element boundary in the traditional sense is a virtual boundary.Under the background of big data,it is difficult to define and visualize the elements.It also provides technical support for the research of complex urban agglomerations.This article focuses on applying the core technology of big data to the study of urban agglomerations.Taking the Yangtze River Delta urban agglomeration as an example,it uses multi-source data and multi-perspective development to comprehensively evaluate the population,industry,ecology,and public resources of the Yangtze River Delta urban agglomeration.,In order to define the boundary under the multi-core elements of the urban agglomeration and make targeted development suggestions.Big data technology is used to collect all kinds of information.The data sources mainly include national statistical yearbook data,Baidu POI data,enterprise search and Kedao network enterprise information,air quality historical data,Baidu migration data,etc.,which respectively reflect the comprehensive strength of the Yangtze River Delta region,The level of infrastructure construction,industrial advantages and enterprise clustering,the level of green development,and the status quo of population macro-flow.Through multi-source data standardization results,combined with analysis methods such as entropy weight method,principal component analysis,and discontinuous point analysis,the boundaries of multi-core elements are visualized with BI,GI and other software.Integrating the results of multi-element standardization and boundary visualization,it can be seen that the development of the Yangtze River Delta urban agglomeration is already at a relatively mature stage of network formation.Although there are obvious regional differences within the urban agglomeration,advantageous resources including population,economy,and social infrastructure will gather in several metropolitan areas,but with the continuous advancement of the integration process,all cities and regions are in an upward trend.Some backward border cities have received development dividends such as infrastructure construction under the promotion of policies.Comprehensively evaluate the development status of 177 districts and counties within the Yangtze River Delta City Group,and propose future development suggestions based on their statusThrough the research of the Yangtze River Delta urban agglomeration from the perspective of big data,future related research provides a feasible paradigm. |
