Vector Dataset of Changes in Chinese River Systems from 2000 to 2022

The "Vector data set of river network changes in China from 2000 to 2022" contains a set of vector data of China's river network in recent 20 years, including 2000, 2005, 2010, 2015, 2020 and 2022. The data format is.SHP vector data and.DBF,.PRJ,.shx and other auxiliary data files. The average amount of data in each phase is about 1.01GB, and the data contains three types of data files: (1) Channel center line vector data; (2) river network node vector data; (3) River width vector data of river center point.
Based on the "China 30-meter Land Cover Dataset (CLCD) from 1990 to 2022" and "Raster Data from the Global River Width Dataset based on Landsat Data (GRWL)", the main data processing processes include: 1. Image segmentation: regular segmentation, overlapping, with geographic coordinates, while extracting water objects;2. Remove small water objects;3. Remove Bridges, roads, DAMS and other targets;4. Extract the framework river width of water body (raster and vector data);5. Image splicing and vector reconnection (form raster data set).