HSDOS

HSDOS

Soil spectral library from the Hungarian Soil Degradation Observation System (HSDOS)

VNIR NIR MIR
National — Hungarian
5,000+ samples version v3 CC-BY

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
  • Sampling depth: various
  • Geography: none
  • Variables available (OSSL): 8 out of 8 — see Database description for full schema
  • Populated columns: id.layer_uuid_txt, id.layer_local_c, observation.date_src_yyy.mm.dd, longitude.point_wgs84_dd, latitude.point_wgs84_dd, layer.upper.depth_usda_cm, layer.lower.depth_usda_cm, layer.sequence_usda_uint16

Soil laboratory information

  • Total samples: 5,490
  • Properties available (original): 8
  • 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
ph_kcl_iso.10390_index 0 7.36 0.85 4.18 6.84 7.62 7.94 9.93
oc_wb1934_w.pctOrganic Carbon, Walkley-Black method, 1934Method: wb1934Unit: w.pct 0 1.63 0.99 0.10 0.84 1.46 2.21 8.00
caco3_iso.10693_w.pctCarbonate, ISO 10693Method: iso.10693Unit: w.pct 0 7.81 10.16 0.00 0.00 3.60 13.00 90.00
ec_iso.11265_ds.mElectrical Conductivity, ISO 11265Method: iso.11265Unit: ds.m 0 0.99 0.93 0.50 0.50 0.50 1.25 12.75
n.tot_iso.11261_w.pctNitrogen, Total NCS, ISO 11261Method: iso.11261Unit: w.pct 0 0.00 0.00 0.00 0.00 0.00 0.00 0.05
p.ext_msz.20135_mg.kgPhosphorus, Extractable, Ammonium Lactate (AL)Method: msz.20135Unit: mg.kg 0 162.69 297.26 1.50 38.90 83.70 176.00 7900.00
k.ext_msz.20135_mg.kgPotassium, K2O, Extractable, Ammonium Lactate (AL)Method: msz.20135Unit: mg.kg 0 197.12 160.74 5.10 103.00 158.00 242.00 3320.00

VNIR

  • Acquisition mode: Not available
  • Intensity: reflectance
  • Original range: 350-2500
  • Instrument: FieldSpec 4 Spectroradiometer
  • Manufacturer: ASD (currently Malvern Panalytical)
  • Instrument co-scans: 50
  • Scan repeats: 5
  • Scan accessory: Not available
  • Original resolution: 3
  • Sample preparation: Air-dried, Sieved < 2 mm
  • Additional info: Not available

VNIR plot

References

  1. Publication 1