Soil Grids 250m v2.0¶

SoilGrids is designed as a globally consistent, data-driven system that predicts soil properties and classes using global covariates and globally fitted models. If you are looking for soil information on national and/or local levels we advise to compare SoilGrids predictions with soil maps derived from national and local soil geographical databases. National soil maps are usually based on more detailed input soil information and therefore are often more accurate than SoilGrids (within the local coverage area). For an overview of national and regional soil databases, please refer to the Soil Geographic Databases compendium. The ‘mean’ and ‘median (0.5 quantile)’ may both be used as predictions of the soil property for a given cell. The mean represents the ‘expected value’ and provides an unbiased prediction of the soil property.

Name	Description	Mapped units	Conversion factor	Conventional units	Assets on GEE
bdod	Bulk density of the fine earth fraction	cg/cm³	100	kg/dm³	bdod_mean
cec	Cation Exchange Capacity of the soil	mmol©/kg	10	cmol©/kg	cec_mean
cfvo	Volumetric fraction of coarse fragments (> 2 mm)	cm3/dm3 (vol‰)	10	cm3/100cm3 (vol%)	cfvo_mean
clay	Proportion of clay particles (< 0.002 mm) in the fine earth fraction	g/kg	10	g/100g (%)	clay_mean
nitrogen	Total nitrogen (N)	cg/kg	100	g/kg	nitrogen_mean
phh2o	Soil pH	pHx10	10	pH	phh2o_mean
sand	Proportion of sand particles (> 0.05 mm) in the fine earth fraction	g/kg	10	g/100g (%)	sand_mean
silt	Proportion of silt particles (≥ 0.002 mm and ≤ 0.05 mm) in the fine earth fraction	g/kg	10	g/100g (%)	silt_mean
soc	Soil organic carbon content in the fine earth fraction	dg/kg	10	g/kg	soc_mean
ocd	Organic carbon density	hg/dm³	10	kg/dm³	ocd_mean
ocs	Organic carbon stocks	t/ha	10	kg/m²	ocs_mean

Citation¶

Poggio, L., de Sousa, L. M., Batjes, N. H., Heuvelink, G. B. M., Kempen, B., Ribeiro, E., and Rossiter, D.: SoilGrids 2.0: producing soil information for the globe with quantified spatial uncertainty, SOIL, 7, 217–240, https://doi.org/10.5194/soil-7-217-2021, 2021.

gee_isric_main

Earth Engine Snippet¶

var isric_bdod_mean = ee.Image("projects/soilgrids-isric/bdod_mean");
var isric_cec = ee.Image("projects/soilgrids-isric/cec_mean");
var isric_cfvo = ee.Image("projects/soilgrids-isric/cfvo_mean");
var isric_clay = ee.Image("projects/soilgrids-isric/clay_mean");
var isric_sand = ee.Image("projects/soilgrids-isric/sand_mean");
var isric_silt = ee.Image("projects/soilgrids-isric/silt_mean");
var isric_nitrogen = ee.Image("projects/soilgrids-isric/nitrogen_mean");
var isric_phh20 = ee.Image("projects/soilgrids-isric/phh2o_mean");
var isric_soc = ee.Image("projects/soilgrids-isric/soc_mean");
var isric_ocd = ee.Image("projects/soilgrids-isric/ocd_mean");
var isric_ocs = ee.Image("projects/soilgrids-isric/ocs_mean");