Urban Land Density Distribution and Its Evolution:A Comparative Analysis of Morphology-oriented and Process-oriented Models
The purposes of this study are to analyze the spatial distribution and evolution of urban land density,and to elucidate the dynamics of urban spatial structure and development.The concentric circle analysis method,integrating morphology-oriented(ULD)and process-oriented models(GMP)are used to offer the insights into the changing urban landscape.The research results show that:1)urban land density prominently displays an inverted S shap distribution,influenced mainly by the tension between central urban attraction and land scarcity.2)During the period of rapid urbanization,suburban areas expands faster than central areas,resulting in a decline in urban compactness and underscoring the significance of effective boundary control.3)Urban compactness demonstrates a pattern of initial decrease followed by an increase,mirroring a shift in land use from dispersed to concentrated utilization.4)For cities with complex urban forms,such as multi-centered cities,introducing new parameters can further improve the goodness of fit of the process-oriented model.In conclusion,this study reveals the morphological characteristics and process mechanisms of the spatial decay of urban land density.Both morphology-oriented and process-oriented models provide effective tools for quantitatively understanding the spatial structural characteristics of urban land density.
urban land useurban land densityspatial structureurban morphologyurban compactness
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