Abstract
The evolution of urban spatial structure and urban land use is a topical issue in urban studies. The analysis of the complexity of functional urban spaces evolution is valuable for a deeper understanding of the changes in urban spatial structure. Taking the central city of Changchun as the study area, the paper uses the urban land conversion method to analyze the spatial and temporal characteristics of functional urban spaces evolution in different aspects. The study found that the evolution of functional urban spaces presents significant spatial and temporal differences in different stages and different aspects. There is a close relationship between functional urban spaces evolution and scale. As the scale becomes smaller, the spatial differences and patterns of functional urban spaces evolution become more complex. In the context of rapid urbanization, the mutual replacement of functional urban spaces is frequent, which is not conducive to the sustainable development of urban space as a whole. This study will deepen the understanding of the evolution of urban spatial structure and the complexity of urban systems and provide theoretical support for the optimization and sustainable development of urban spaces.
Highlights
A city is a large system composed of social, economic, ecological, resource, environmental, and other subsystems [1,2,3]
We focus on residential land (RL), public service land (PL), commercial land (CL), and industrial land (IL). ese four types of urban land we focus on account for nearly 70% of the total urban land in the central city
The replacement of residential and industrial land is active (Table 2). rough urban land replacement, residential land was mainly replaced by public service and commercial lands, and, simultaneously, industrial land was largely replaced by residential lands
Summary
A city is a large system composed of social, economic, ecological, resource, environmental, and other subsystems [1,2,3]. It is challenging to comprehensively understand the urban system from a single field of study [7, 8]. Research on the complexity of urban space has attracted the attention of scholars. Complex methods, such as urban fractal theory [10,11,12], cellular automata [13,14,15,16], and selforganization theory [7, 17, 18], are used to analyze the complexity of urban land use changes or urban spatial evolution [19, 20]. E study of urban space complexity focuses on three aspects: urban subsystems, urban system structure, and urban space structure evolution. Urban landscape structures, and urban morphological structures are topical issues in the study of the complexity of urban system structures [25,26,27]. e mathematical model and scenario simulation of urban spatial structure evolution are the key points of urban spatial structure evolution research [28,29,30,31,32,33]
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