ICRAF_ISRIC
ICRAF_ISRIC
Soil spectral libraries from the ISRIC World Soil Reference Collection (58 countries) scanned by ICRAF
4,000+ samples
first release (v1)
CC-BY
Map
Database access
Data originally provided by:
- Contact: ISRIC - World Soil Information
- Email: afsis.info@africasoils.net
- Original source: https://data.isric.org/geonetwork/srv/eng/catalog.search#/metadata/1b65024a-cd9f-11e9-a8f9-a0481ca9e724
Available files
| Type | Filename | Link |
|---|---|---|
| MIR spectra — CSV (gzip) | ossl_mir_v1.3.csv.gz |
Download |
| MIR spectra — Parquet | ossl_mir_v1.3.parquet |
Download |
| 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 |
Soil laboratory information
Summary statistics for soil properties in this dataset, sourced from the ossl-imports README.
| skim_variable | n_missing | mean | sd | p0 | p25 | p50 | p75 | p100 |
|---|---|---|---|---|---|---|---|---|
| ph.h2o_usda.a268_index | 297 | 6.11 | 1.40 | 3.00 | 5.00 | 5.90 | 7.10 | 10.50 |
| ph.cacl2_usda.a481_index | 4039 | 4.99 | 1.26 | 3.10 | 4.00 | 5.10 | 6.05 | 7.90 |
| caco3_usda.a54_w.pct | 2956 | 9.94 | 16.41 | 0.00 | 1.00 | 2.60 | 11.60 | 99.70 |
| oc_usda.c1059_w.pct | 373 | 1.20 | 2.66 | 0.00 | 0.22 | 0.48 | 1.20 | 60.00 |
| ca.ext_usda.a722_cmolc.kg | 401 | 10.81 | 15.58 | 0.00 | 0.40 | 3.60 | 14.90 | 168.20 |
| mg.ext_usda.a724_cmolc.kg | 393 | 2.81 | 4.69 | 0.00 | 0.20 | 1.00 | 3.40 | 68.00 |
| na.ext_usda.a726_cmolc.kg | 409 | 0.62 | 2.39 | 0.00 | 0.00 | 0.10 | 0.30 | 31.60 |
| k.ext_usda.a725_cmolc.kg | 399 | 0.33 | 0.57 | 0.00 | 0.10 | 0.20 | 0.40 | 9.80 |
| acidity_usda.a795_cmolc.kg | 2562 | 1.99 | 2.95 | 0.00 | 0.20 | 0.90 | 2.60 | 25.50 |
| al.ext_usda.a69_cmolc.kg | 2532 | 1.58 | 2.56 | 0.00 | 0.00 | 0.70 | 2.10 | 25.30 |
| cec_usda.a723_cmolc.kg | 419 | 16.27 | 16.41 | 0.00 | 5.20 | 11.50 | 21.60 | 189.60 |
| sand.tot_usda.c60_w.pct | 392 | 38.24 | 29.15 | 0.00 | 11.10 | 33.00 | 61.20 | 99.60 |
| silt.tot_usda.c62_w.pct | 339 | 29.22 | 20.39 | 0.00 | 13.00 | 25.00 | 42.50 | 256.00 |
| clay.tot_usda.a334_w.pct | 333 | 32.60 | 22.27 | 0.00 | 14.70 | 30.10 | 47.00 | 96.80 |
| bd_usda.a21_g.cm3 | 3074 | 1.26 | 0.29 | 0.28 | 1.10 | 1.31 | 1.48 | 1.89 |
| wr.10kPa_usda.a8_w.pct | 3145 | 36.77 | 13.27 | 4.40 | 28.60 | 36.45 | 45.62 | 77.30 |
| wr.33kPa_usda.a9_w.pct | 3150 | 31.82 | 13.34 | 2.30 | 22.90 | 31.40 | 41.50 | 71.40 |
| wr.1500kPa_usda.a417_w.pct | 3102 | 21.74 | 11.44 | 0.10 | 12.90 | 21.90 | 29.55 | 56.40 |
Soil site information
- coordinates precision: precise, country
- sampling depth: various
- geography: landuse
MIR
- Acquisition mode: Not available
- Intensity: absorbance
- Original range: 400-4000
- Standardized range: 600-4000
- Instrument: FTS-7000 FT-IR Spectrometer
- Manufacturer: Bruker Optics (Karsruhe, Germany)
- Scan accessory: Not available
- Sample preparation: Air-dried, finely ground <0.1 mm
- Additional info: Liquid N2–cooled HgCdTe detector; Al as the reference material
MIR plot
VNIR
- Acquisition mode: Not available
- Intensity: reflectance
- Original range: 350-2500
- Instrument: FieldSpec FR Spectroradiometer
- Manufacturer: Analytical Spectral Devices (Boulder, CO, USA)
- Instrument co-scans: 25
- Scan repeats: 2
- Scan accessory: Not available
- Original resolution: 1
- Sample preparation: Air-dried, Sieved < 2 mm
- Additional info: Aluminum reflectors; Ten white reference spectra were recorded using calibrated spectralon
VNIR plot
