基于夜间灯光影像数据的黄河流域中心城市建成区空间扩展及动力因子分析

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史海金^a(

), 吴文恒^a^,^b(

), 李研^a, 刘金凤^a, 万赟^a

Study on spatial expansion and dynamic factors of built-up area of central cities in the Yellow River Basin based on night-time light data

Haijin Shi^a(

), Wenheng Wu^a^,^b(

), Yan Li^a, Jinfeng Liu^a, Yun Wan^a

图2. 1992—2018年中心城市建成区空间扩展

Fig.2. Spatial expansion of built-up areas in central cities from 1992 to 2018