Geocradle

Geocradle

Soil spectral library from the Geocradle region (Balkans, Middle East, and North Africa)

VNIR NIR MIR
Regional — Balkans, Middle East, and North Africa
1,000+ samples first release (v1) ODbL

Database access

Data originally provided by:

Available files

Type Filename Link
Soil lab measurements — CSV (gzip) ossl_soillab_v1.3.csv.gz Download
Soil lab measurements — Parquet ossl_soillab_v1.3.parquet Download
Soil site metadata — CSV (gzip) ossl_soilsite_v1.3.csv.gz Download
Soil site metadata — Parquet ossl_soilsite_v1.3.parquet Download
VisNIR spectra — CSV (gzip) ossl_visnir_v1.3.csv.gz Download
VisNIR spectra — Parquet ossl_visnir_v1.3.parquet Download

Map

Soil site information

  • Coordinates precision: precise, country
  • Sampling depth: various
  • Geography: soil taxonomy, elevation
  • Variables available (OSSL): 13 out of 13 — see Database description for full schema
  • Populated columns: id.layer_uuid_txt, id.layer_local_c, latitude.point_wgs84_dd, longitude.point_wgs84_dd, observation.date_src_yyyy.mm.dd, layer.lower.depth_usda_cm, loc.country_src_txt, site.clim.koeppen_src_code, site.alt_src_m, pedon.taxa_wrb_code, pedon.taxa_wrb_txt, pedon.taxa_usda_txt, layer.texture_usda_txt

Soil laboratory information

  • Total samples: 1,753
  • Properties available (original): 18
  • Properties standardized (OSSL): 7 — summarized in Table 1 below
  • Categories: physical, chemical, carbon & nutrients
  • Original source: see Database access

Hover over any OSSL code in the table below to see its full description.

Table 1: Summary statistics (mean, SD, percentiles) for OSSL-standardized soil properties.
skim_variable n_missing mean sd p0 p25 p50 p75 p100
sand.tot_usda.c405_w.pctSand, Total, N prepMethod: usda.c405Unit: w.pct 264 53.48 22.85 0.40 36.85 54.00 69.00 99.00
clay.tot_usda.a334_w.pctClayMethod: usda.a334Unit: w.pct 77 21.26 16.01 0.00 9.39 17.00 29.10 94.80
silt.tot_usda.c407_w.pctSilt, Total, N prepMethod: usda.c407Unit: w.pct 264 26.67 14.31 0.00 16.00 26.00 37.40 68.00
oc_iso.10694_w.pctOrganic Carbon, ISO 10694Method: iso.10694Unit: w.pct 132 0.74 0.84 0.00 0.29 0.58 0.94 20.75
caco3_iso.10693_w.pctCarbonate, ISO 10693Method: iso.10693Unit: w.pct 388 6.83 14.87 0.00 0.00 0.20 3.40 89.99
ph.h2o_usda.a268_indexpH, 1:1 Soil-Water SuspensionMethod: usda.a268Unit: index 1141 7.22 1.09 3.50 6.50 7.44 8.01 10.07
ec_iso.11265_ds.mElectrical Conductivity, ISO 11265Method: iso.11265Unit: ds.m 1412 2.29 9.32 0.02 0.16 0.67 1.42 120.00

VNIR

  • Acquisition mode: Not available
  • Intensity: reflectance
  • Original range: 350-2500
  • Instrument: ASD FieldSpec Pro & PSR+ Spectrometer
  • Manufacturer: (PANanalytical BV, Boulder, CO, USA formerly Analytical Spectral Devices) & Spectral Evolution Inc., Lawrence, Massachusetts,USA
  • Instrument co-scans: 10
  • Scan repeats: Not available
  • Scan accessory: Not available
  • Original resolution: 1
  • Sample preparation: Air-dried, Sieved < 2 mm
  • Additional info: Not available

VNIR plot

References

  1. Publication 1
  2. Publication 2