长三角行政区划变革数据集(1998-2021年)

该数据集为长三角行政区划变革数据集，时间为1998-2021年，涵盖了地市级和区县级两个尺度。基于中国人民共和国民政部全国行政区划信息查询平台，整理长三角地区三省一市县级以上行政区划变更情况，结合权威官方的行政区划数据，加工形成了1998-2021年分省逐年行政区划变革信息表（在线）和长三角逐年行政区划矢量数据集（实名离线）。

This dataset is the Yangtze River Delta Administrative Division Change Dataset, covering the period from 1998 to 2021 and including two levels: prefecture-level and county-level. Based on the National Administrative Division Information Inquiry Platform of the Ministry of Civil Affairs of the People's Republic of China, it collated the changes in administrative divisions above the county level in the three provinces and one municipality of the Yangtze River Delta region, combined with authoritative official administrative division data, and processed to form province-specific annual administrative division change information tables (online) for 1998-2021 and annual administrative division vector datasets (real-name offline) for the Yangtze River Delta.