Observing the compact trend of urban expansion patterns in global 33 megacities during 2000-2020
文献类型：期刊论文
| 作者 | Hou, Yali1,2; Kuang, Wenhui1; Dou, Yinyin1 |
| 刊名 | JOURNAL OF GEOGRAPHICAL SCIENCES
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 33期号:12页码:2359-2376 |
| 关键词 | megacities radial dimension radial dimension difference urban expansion urban land use efficiency |
| ISSN号 | 1009-637X |
| DOI | 10.1007/s11442-023-2180-0 |
| 通讯作者 | Dou, Yinyin(douyinyin@igsnrr.ac.cn) |
| 英文摘要 | Megacities serve as global centers for economic, cultural, and high-tech industries. The structural features and population agglomerations are typical traits of urbanization, yet little is known about the morphological features and expansion patterns of megacities worldwide. Here we examined the spatiotemporal variations of urban land in megalopolises from 2000 to 2020 using the Urban Expansion Intensity Differentiation Index. The fractal features and expansion patterns of megacities were analyzed using the Area-Radius Multidimensional Scaling Model. Urban land use efficiency was then evaluated based on the linear relationship between urban land area and population. We found that Southeast Asia and China were the hotspots of urban expansion in megacities from 2000 to 2020, with urban land areas expanding by 3148.32 km2 and 5996.26 km2, respectively. The morphological features and expansion patterns of megacities exhibited a growing trend towards intensification and compactness, with the average radial dimension increasing from 1.54 to 1.56. The annual decrease in fractal dimensions indicated the integration of inner urban areas. North America and Europe megacities showed a low urban land use efficiency, with a ratio of urban land area to population ranging from 0.89 to 4.11 in 2020. Conversely, South Asia and Africa megacities exhibited a high urban land use efficiency, with the ratios between 0.23 and 0.87. Our results provide information for promoting efficient urban land utilization and sustainable cities. It is proposed to control the scale of urban expansion and to promote balanced development between inner and outer urban areas for achieving resilient and sustainable urban development. |
| WOS关键词 | FRACTAL DIMENSIONS ; LAND CHANGES ; CITIES ; GROWTH ; COVER ; FORM |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA20040403] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA23100201] |
| WOS研究方向 | Physical Geography |
| 语种 | 英语 |
| WOS记录号 | WOS:001128838600004 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/201285]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Dou, Yinyin |
| 作者单位 | 1.Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hou, Yali,Kuang, Wenhui,Dou, Yinyin. Observing the compact trend of urban expansion patterns in global 33 megacities during 2000-2020[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2023,33(12):2359-2376. |
| APA | Hou, Yali,Kuang, Wenhui,&Dou, Yinyin.(2023).Observing the compact trend of urban expansion patterns in global 33 megacities during 2000-2020.JOURNAL OF GEOGRAPHICAL SCIENCES,33(12),2359-2376. |
| MLA | Hou, Yali,et al."Observing the compact trend of urban expansion patterns in global 33 megacities during 2000-2020".JOURNAL OF GEOGRAPHICAL SCIENCES 33.12(2023):2359-2376. |
入库方式： OAI收割
来源：地理科学与资源研究所
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