期刊
HABITAT INTERNATIONAL
卷 107, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.habitatint.2020.102296
关键词
Land-use structure; Population density; Urbanization; Land substitution; Shrinking city; China
资金
- Natural Science Foundation of China [41401191, 41871094]
- Humanities and Social Sciences of Ministry of Education Planning Fund [18YJAZH078]
- Key Research and Development Program of Hunan Province [2019SK2101]
- Scientific Research Program of Ministry of Housing and Urban-Rural Development of the People's Republic of China [2018-R2-029]
- Open Fund of Hunan Key Laboratory of Land Resources Evaluation and Utilization [SYS-MT-201902]
- Cluster of Excellence 'Climate, Climatic Change and Society' (CLICCS) at the University of Hamburg - DFG
The study reveals that the dynamics of urban population density are influenced by changes in urban land-use structure, with high economic returns of land use and land scarcity being key factors. The holistic theoretical framework helps in understanding these impacts and considering them in the structural reform of urban land supply is crucial for promoting sustainable city growth.
The dynamics of urban population density (UPD) has attracted extensive attention from both policymakers and scholars because it can be used to indicate the sustainability of city growth. Substantial research considering urban areas as whole units has demonstrated a close relationship between urban land expansion and demographic urbanization. However, the impacts of the urban land-use structure (ULUS) on sustainable city growth from the perspective of UPD dynamics have largely been ignored. Based on the understanding of human-land interactions in the process of city evolution, we present a holistic theoretical framework for the impacts of changing ULUS on UPD dynamics. Taking 331 cities proper in China as the study objects, we found that the designation of urban land has mostly depended upon land substitution resulting from the high economic returns of land used for secondary and tertiary industries and residential purposes. This is induced by the increasing scarcity of urban land and people's primary requirements for the dwelling and employment functions of a city rather than its living-environment function. The results confirmed that the holistic theoretical framework is effective for understanding the impacts of changing ULUS on UPD dynamics, and that taking consideration of these impacts in the structural reform of urban land supply is significant for promoting sustainable city growth. This study also provides inspiration for understanding the uncertainties relating to sustainable city growth based on identification of city shrinkage and growth patterns. We discuss regionally differentiated policies relating to structural reform of urban land supply and strategies for coping with city shrinkage.
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