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作者

Xinyue Ye;Shengwen Li;Qiong Peng

来源

CITIES,Vol.109,Issue1,Article 103041

语言

英文

关键字

Geographical awareness;Spatial out-awareness rate index;Spatial in-awareness index;Social media;China;COVID-19

作者单位

Department of Landscape Architecture and Urban Planning, Texas A&M University, USA;School of Geography and Information Engineering, China University of Geosciences, China;Department of Urban Studies and Planning, National Center for Smart Growth, University of Maryland, College Park, 1219D Preinkert Field House, College Park, MD 20742, USA;Department of Landscape Architecture and Urban Planning, Texas A&M University, USA;School of Geography and Information Engineering, China University of Geosciences, China;Department of Urban Studies and Planning, National Center for Smart Growth, University of Maryland, College Park, 1219D Preinkert Field House, College Park, MD 20742, USA

摘要

Unlike the large body of research on investigating interactions among cities using survey data, the social media-based city interaction study has received much less exploration. Based on geographical studies of social media content in China, we develop a few indices quantifying various levels of geographical awareness among cities. (1) We find that the geographical awareness proxy by the social media-based indices can measure interactions among cities. Specifically, the geographical awareness among cities follows gravitational law and is highly correlated with mobility flows. (2) The spatial in-awareness index (SIAI) is an appropriate index indicating a city's ranking in the urban hierarchy (3) the spatial out-awareness rate (SOAR) can indicate the interactions from a focal city to other cities. Our findings also show that SOAR can predict the number of people infected during a pandemic in a city system. Once the origin city or hotspots of the outbreak and the number of infected persons within those cities are known, we can use the social media-based SOAR index to predict number of cases for other else cities in the urban system. With this information, governments can properly and efficiently deliver medical equipment and staff to cities where large populations are infected.