15-19世纪中国晚期帝制时期的城墙城市和城市范围数据集

我们根据多份历史文献重建了从15世纪到19世纪的中国城墙城市。中国晚期帝国（明清两代，1368-1911年）的城市通常都有城墙，这些城墙通常建在城市建成区周围。通过恢复城墙的范围，有助于探索这一时期的城市扩张。首先，我们从历史数据中收集了城墙建设或重建的年份。具体来说，城墙范围保持不变的时期被记录为其生命周期。其次，可以根据城市形态方法和各种文献（包括历史文献资料、20世纪上半叶的军事地形图以及20世纪70年代的遥感图像）对城墙的范围进行专门化。生命周期和空间数据的关联与整合将产生晚期帝国的中国城墙区域数据集（CCWAD）。基于大多数城墙的接近时间，我们从CCWAD中选择了六个具有代表性的年份（即1400年、1537年、1648年、1708年、1787年和1866年）来制作15-19世纪的中国城市范围数据集（CUED）。

We reconstructed walled cities in China from the 15th to the 19th century based on multiple historical documents. Cities in Late Imperial China (Ming and Qing dynasties, 1368–1911) were typically walled, with city walls built around the urban built-up areas. Restoring the extent of these city walls facilitates the exploration of urban expansion during this period. First, we collected the years of construction or reconstruction of city walls from historical data. Specifically, periods during which the extent of the city walls remained unchanged were recorded as their lifecycles. Second, the spatial extent of the city walls can be delineated using urban morphological methods and various sources, including historical documents, military topographic maps from the first half of the 20th century, and remote sensing images from the 1970s. The association and integration of lifecycle and spatial data will yield the Chinese City Wall Area Dataset (CCWAD) for Late Imperial China. Based on the approximate timestamps of most city walls, we selected six representative years (i.e., 1400, 1537, 1648, 1708, 1787, and 1866) from the CCWAD to create the Chinese Urban Extent Dataset (CUED) for the 15th to 19th centuries.