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A gradient model for the spatial patterns of cities | | Jie Chang
; Guofu Yang
; Shun Liu
; Hanhui Jin
; Zhaoping Wu
; Ronghua Xu
; Yong Min
; Kaiwen Zheng
; Bin Xu
; Weidong Luo
; Ying Ge
; Feng Mao
; Kang Hao Cheong
; | | Date: |
15 Oct 2020 | | Abstract: | The dynamics of city’s spatial structures are determined by the coupling of
functional components (such as restaurants and shops) and human beings within
the city. Yet, there still lacks mechanism models to quantify the spatial
distribution of functional components. Here, we establish a gradient model to
simulate the density curves of multiple types of components based on the
equilibria of gravitational and repulsive forces along the urban-rural
gradient. The forces from city center to components are determined by both the
city’s attributes (land rent, population and people’s environmental
preferences) and the components attributes (supply capacity, product
transportability and environmental impacts). The simulation for the
distribution curves of 22 types of components on the urban-rural gradient are a
good fit for the real-world data in cities. Based on the 4 typical types of
components, the model reveals a bottom-up self-organizing mechanism that is,
the patterns in city development are determined by the economic, ecological,
and social attributes of both cities and components. Based on the mechanism, we
predict the distribution curves of many types of components along with the
development of cities. The model provides a general tool for analyzing the
distribution of objects on the gradients. | | Source: | arXiv, 2010.07700 | | Services: | Forum | Review | PDF | Favorites | |
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