A global dataset of soil particulate organic carbon

This original data provides soil particulate organic carbon concentration
at the biome and global scale. Sampling site latitude and longitude were
available for the majority of the samples that enabled assembling
additional soil properties(soil type, soil texture, soil moisture, soil
temperature, soil pH, bulk density, porosity, total organic carbon, total
nitrogen, soil dissolved carbon, soil dissovled nitrogen, soil microbial
biomass carbon, soil microbial biomass nitrogen), geographic information
(latitude, longtidue), climatic information (mean annual air temperature,
mean annual precipitation), vegetation type,  sampling dates and
depth. A total of 3,418 data points were finally collected from the LUCAS
database and 244 publications from 1988 to 2020. The database was divided
into two groups: one group consists of 2,507 data points for topsoil (0 –
30 cm) in 632 sites, and 911 data points for soil profile (0 – 100 cm) in
55 sites. The concentrations of soil particulate organic carbon, in
combination with other soil databases, were used to estimate the global
storage of soil particulate organic carbon in 0-30 cm and 0-100 cm soil
profiles. These storage estimates were combined with a spatial map of 12
major biomes (boreal forest, temperate coniferous forest, temperate
broadleaf forest, tropical and subtropical forests, mixed forest,
grassland, shrub, tundra, desert, natural wetland, cropland, and pasture)
at 0.05-degree by 0.5-degree spatial resolution. The biome map and
estimates of soil particulate organic carbon are provided in a single
netCDF format file.