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China physical urban area dataset

  Introduction: China physical urban area dataset (namely CPUA) represent the boundaries of physical urban areas (PUA) in 2019, covering 81 cities, with an accuracy of 92.5%. PUA characterize both physical and socioeconomic features of urban area, and are fundamental date to monitor urbanization, evaluate sustainable city development, and also for a wide range of urban studies. Previous studies extract PUA by densely populated, night-lighted, built-up, or artificial impervious surfaces, which consider either physical or socioeconomic aspect of PUA, but cannot measure both. While, CPUA is generated based on urban landscapes considering their physical representations and socioeconomic attributes, thus is complementary to existing studies and urban-boundary datasets. download