城市热点空间紧凑度对城市经济增长的倒U型效应
The inverted U-shaped effect of urban hotspots spatial compactness on urban economic growth
摘要：
紧凑城市作为一个可持续发展的概念，旨在提高城市功能的效率。然而，以前的研究更多地集中在形态上，而不是结构上。本研究侧重于城市结构要素，即，本报告分析了由高密度和高强度社会经济区组成的城市热点地区，并探讨了与其空间结构相关的经济绩效。我们使用夜间光度（NTL）数据和Loubar方法来识别和提取热点，并最终得出两个结论。首先，中国、欧盟和美国的热点数量与人口增长呈次线性关系，指数在0.50~0.55之间，但相交值却完全不同，这主要是由于经济发展水平的不同。其次，我们证明了热点的紧凑性对经济增长的影响呈倒U形，这意味着最佳紧凑性系数确实存在。这些发现对城市规划有一定的参考价值。
英文摘要：
The compact city, as a sustainable concept, is intended to augment the efficiency of urban function. However, previous studies have concentrated more on morphology than on structure. The present study focuses on urban structural elements, i.e., urban hotspots consisting of high-density and high-intensity socioeconomic zones, and explores the economic performance associated with their spatial structure. We use nighttime luminosity (NTL) data and the Loubar method to identify and extract the hotspot and ultimately draw two conclusions. First, with population increasing, the hotspot number scales sublinearly with an exponent of approximately 0.50~0.55, regardless of the location in China, the EU or the US, while the intersect values are totally different, which is mainly due to different economic developmental level. Secondly, we demonstrate that the compactness of hotspots imposes an inverted U-shaped influence on economic growth, which implies that an optimal compactness coefficient does exist. These findings are helpful for urban planning.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
