S social and economic development; and their urban spatial structure has also been reconstructed. However; there’s nevertheless a specific lack of understanding with the qualities in the spatial structure of China’s megacities. This study aimed to reveal traits on the spatial structure of Chinese Nimbolide web megacities at various scales making use of jobs-housing huge information. To attain this target, spatial autocorrelation and also a geographically weighted regression (GWR) model were applied to reveal static polycentricity, and community detection was employed to reveal dynamic commuting communities. The distribution of jobs in urban space and jobs ousing balance levels in commuting communities were additional analyzed. Experiments have been conducted in Tianjin, China. We identified that: (1) the static qualities of the spatial structure of megacities presented the coexistence of polycentricity in addition to a higher degree of dispersion at macro- and meso-scales; (two) the dynamic traits in the spatial structure of megacities revealed two forms of commuting communities at macro- and meso-scales and most commuting communities had a good jobs-housing balance. These findings may be referenced by urban managers and planners to formulate relevant policies for spatial distribution optimization of urban functions and transportation improvement at various spatial scales. Keyword phrases: megacity; spatial structure; polycentricity; commuting communities; Tianjin1. Introduction In recent decades, the agglomeration of population and industries in metropolitan places has become a widespread phenomenon of urbanization worldwide [1], which can be specifically obvious in China [4,5]. Due to the fact China’s reform and opening-up, the country has accomplished the fastest urbanization rate in the world. The share of Chinese folks living in urban places has enhanced significantly from 17.9 in 1978 to 63.9 in 2020. According to China’s criteria for urban scale, cities with more than 5 million residents in an urban location are classified as megacities. At present, you will find twenty-one megacities in China, seven of which have more than ten million residents inside their urban area. Megacities, also as dense urban places with megacities as the core, have undoubtedly come to be the core spatial carriers major China’s social and financial improvement. With urban expansion, the spatial structure of megacities has also been reconstructed [6], major to adjustments inside the distribution of distinctive kinds of urban land use, and alterations in travel patterns of residents. These adjustments have led to a series of problems inside the sustainable improvement of megacities, like jobs ousing segregation [7], excess commuting [8], air pollution [9], along with a decline inside the top quality of life [10]. As a AS-0141 web result, an investigation of thePublisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.Copyright: 2021 by the authors. Licensee MDPI, Basel, Switzerland. This short article is definitely an open access article distributed beneath the terms and situations of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ four.0/).Land 2021, ten, 1144. https://doi.org/10.3390/landhttps://www.mdpi.com/journal/landLand 2021, ten,two ofcharacteristics from the spatial structure of megacities would aid to know the current spatial improvement of Chinese cities, and provide corresponding urban transport and land use policies. By taking a look at the case of Tianjin, this paper aimed to rev.
