Basic Information and Field Description of the Black Soil Health Database

The database contains 238 sampling sites, 19,756 data records, and 43 field categories, with a total data volume of approximately 75 GB. Its fields cover site information—including province or municipality, demonstration area, sampling location, sampling method, sampling depth, geographic coordinates, and soil type—as well as land use, crop type, soil pH, organic matter, total nutrients, available nutrients, inorganic nitrogen, available micronutrients, total carbon, soil organic carbon, carbon-to-nitrogen ratio, and carbon-to-phosphorus ratio.

The database also incorporates microbial diversity, functional genes, climate data, and pollutant information. It provides a data foundation for black soil health assessment, multi-source data integration, environmental-impact analysis, cultivated-land quality monitoring, and black soil conservation and management.