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Functional urban area delineations of cities on the Chinese mainland using massive Didi ride-hailing records
توصیف های کاربردی منطقه شهری از شهرها در سرزمین اصلی چین با استفاده از سوابق گسترده تگرگ سوار بر دیدنی Didi-2020 The problem associated with a citys administrative boundary being “under-” or “over-bounded” has become a
global phenomenon. A citys administrative boundary city does not effectively represent the actual size and
impact of its labor force and economic activity. While many existing case studies have investigated the functional
urban areas of single cities, the problem of how to delineate urban areas in geographic space relating to large
bodies of cities or at the scale of an entire country has not been investigated. This study proposed a method for
FUA identification that relies on ride-hailing big data. In this study, over 43 million anonymized 2016 car-hailing
records were collected from Didi Chuxing, the largest car-hailing online platform in the world (to the best of our
knowledge). A core-periphery approach is then proposed that uses nationwide and fine-grained trips to understand
functional urban areas in Mainland China. This study examined 4456 out of all 39,007 townships in an
attempt to provide a new method for the definition of urban functional areas in Chinese Mainland. In addition,
four types of cities are identified using a comparison of functional urban areas with their administrative limits,
and a further evaluation is conducted using 23 Chinese urban agglomerations. With the rapidly increasing use of
internet-based ride-hailing services, such as Didi, Grab, Lyft, and Uber, globally, this study provides a practical
benchmark for the delineation of functional urban areas at larger scales.. Keywords: Functional urban area | Car-hailing records | |National level | Delineating standards | City system |
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