论文推荐 | 全球收缩城市中城市空地的时空变化及其分布格局

题目：Spatiotemporal changes of urban vacant land and its distribution patterns in shrinking cities on the globe

（全球收缩城市中城市空地的时空变化及其分布格局）

作者：Tangqi Tu, Xinyu Wang and Ying Long*

发表刊物：

Science of The Total Environment

DOI：

https://doi.org/10.1016/j.scitotenv.2024.174424

Urban vacant land (UVL) has been an important issue in the urbanization process, especially for shrinking cities. Identifying UVL and analyzing its spatiotemporal characteristics are the foundation for coping with this issue. This study identified UVL in 497 shrinking cities on the globe (10 % of shrinking cities in total) in 2016 and 2021 using manual labeling and deep learning to reflect the distribution patterns of UVL and its spatiotemporal changes. The results reveal that a global expansion of UVL from 2016 to 2021 in 497 shrinking cities, with diverse distribution patterns and varying changes across different regions. As for socioeconomic factors, UVL is related to population shrinkage, and the UVL ratio presents a phased change with the increase of the urbanization rate, revealing an inverted U-shaped relationship between the UVL ratio and the urbanization rate. The distribution patterns of UVL also vary globally in different urbanization phases. This study can provide theoretical and practical insights for improving urban planning and promoting sustainable urbanization.

更多相关的研究工作详见BCL的【Vacant Land】单元链接：

https://www.beijingcitylab.com/projects-1/56-vacant-land/

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BCL北京城市实验室“空地” （Vacant Land）项目涵盖《基于高分辨率遥感影像语义分割的城市空地大规模自动识别》等研究内容，欢迎探索。

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