Code and data for tracking persistent agricultural ponds in the Hetao Irrigation District

This archive contains research code, derived analytical samples, final pond vector products, and supporting tables for the Hetao Irrigation District, China. It includes separate annual pond polygon layers for 2017 (843 objects), 2020 (834 objects), and 2024 (823 objects), together with 542 three-year persistent pond tracks. The spatial products are provided in GeoPackage (.gpkg) format in the 02_result_data/spatial_products folder. See User_Guide.docx for package contents, usage instructions, and reuse limitations.