Scaling laws between different urban land and population size of cities in the Yangtze River Economic Belt
FU Man1， XU Gang2，Chen Jiangping3
(1.School of Geography and Planning， Sun Yat-Sen University， Guangzhou 510006， China；2.School of Resource and Environmental Science， Wuhan University， Wuhan 430079， China；3.School of Remote Sensing and Information Engineering， Wuhan University， Wuhan 430079， China)
Abstract：A prominent contradiction in China’s rapid urbanization process is that land urbanization is generally faster than population urbanization. However， the relationship between land use area and population growth in different types of cities is still unclear， especially the lack of understanding of the evolution of the human-land relationship from the perspective of complex urban systems. Taking county-level and above cities in the Yangtze River Economic Zone as an example， the urban scaling law is used to explore the nonlinear relationship between land use area and population size of different types of cities， and reveal the evolution of urban-rural relationships from the perspective of land use structure. Results are shown as follows. 1) From 2012 to 2021， the growth rate of road and transportation facilities was significantly faster than that of urban population， which is the main reason for land urbanization faster than population urbanization. 2) Urban land use and population size generally show a sub-linear relationship， reflecting economies of scale. However， industrial land use and population size exhibit a super-linear relationship， indicating a systematic deviation of oversupply of industrial land in large cities. 3) Based on the land use efficiency evaluation using the scale adjustment index， the results show that among cities of the same size， the cities in the middle reaches of the Yangtze River have relatively less residential land per capita， and the industrial land scale adjustment index has more obvious spatial characteristics of “more in the east and less in the west”. The theory of complex urban systems provides a new method for understanding urban-rural relationships and their evolution， and it’s neccesary to optimize and adjust urban-rural relationships from the perspectives of land use structure and spatial layout in the furture.
符 曼,许 刚,陈江平. 不同类型城市用地面积与人口规模的标度律研究——以长江经济带城市为例[J]. 华中师范大学学报(自然科学版), 2024, 58(2): 234-243.
FU Man,XU Gang,Chen Jiangping. Scaling laws between different urban land and population size of cities in the Yangtze River Economic Belt. journal1, 2024, 58(2): 234-243.
2024, Vol. 58 
