Towards a more compact urban form: A spatial-temporal study on the multi-dimensional compactness index of urban form in China

IF 4 2区 地球科学 Q1 GEOGRAPHY
Xiaoxu Xing , Weihao Shi , Xiwei Wu , Yang Liu , Xiaoxi Wang , Yaojun Zhang
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引用次数: 0

Abstract

Compact urban forms are essential for sustainable development, while few studies developed multidimensional urban form compactness index at the national scale from the perspective of spatial-temporal data, limiting our understanding of urban compactness mechanisms. In this study, a multidimensional urban form compactness index was created for 296 cities in China, focusing on spatial topology, morphology, and dynamics, addressing a gap in national-scale analyses from spatial-temporal viewpoints. Key findings include: (i) In the last two decades, significant alterations have occurred in urban compactness, with cities witnessing enhancements from 2005 to 2020. There's a spatial evolution trend characterized by higher compactness in the southeast and lower in the northwest, advancing from northwest to southeast. (ii) Urban expansion elements generally undermine urban compactness, whereas agglomeration efficiency elements contribute positively. (iii) Over time, while urban expansion impacts have shown relative stability over the years, agglomeration efficiency indicators have undergone an N-shaped fluctuation. Spatially, factors associated with urban sprawl enhance compactness in western and northeastern China, while land use factors are particularly effective in the northeastern, western, and northern areas. The study emphasizes the importance of using multidimensional composite indicators for thorough understanding of urban form compactness, offering significant insights for future policy and urban management.

Abstract Image

迈向更紧凑的城市形态:中国城市形态多维紧凑指数的时空研究
紧凑的城市形态对可持续发展至关重要,但很少有研究从时空数据的角度编制全国尺度的多维城市形态紧凑指数,这限制了我们对城市紧凑机制的理解。本研究从空间拓扑、形态和动态三个维度,建立了中国 296 个城市的多维城市形态紧凑指数,弥补了从时空角度进行全国尺度分析的空白。主要研究结果包括(i) 近 20 年来,城市紧凑度发生了显著变化,2005 年至 2020 年城市紧凑度均有所提高。城市紧凑度呈现出东南高西北低、由西北向东南推进的空间演化趋势。(ii) 城市扩张要素总体上削弱了城市紧凑性,而集聚效率要素则起到了积极作用。(iii) 从时间上看,多年来城市扩张的影响相对稳定,而集聚效率指标则经历了 N 型波动。从空间上看,与城市扩张相关的因素增强了中国西部和东北地区的紧凑性,而土地利用因素在东北、西部和北部地区尤为有效。该研究强调了使用多维综合指标深入理解城市形态紧凑性的重要性,为未来的政策和城市管理提供了重要启示。
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来源期刊
Applied Geography
Applied Geography GEOGRAPHY-
CiteScore
8.00
自引率
2.00%
发文量
134
期刊介绍: Applied Geography is a journal devoted to the publication of research which utilizes geographic approaches (human, physical, nature-society and GIScience) to resolve human problems that have a spatial dimension. These problems may be related to the assessment, management and allocation of the world physical and/or human resources. The underlying rationale of the journal is that only through a clear understanding of the relevant societal, physical, and coupled natural-humans systems can we resolve such problems. Papers are invited on any theme involving the application of geographical theory and methodology in the resolution of human problems.
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