Reference Soil Sample Collection

Reference collection of soil samples from profiles described in the ISRIC Soil Information System (ISIS), fully analyzed by standard methods.
 
Maintenance of the data, completion of analytical data, and gradual expansion of the collection remains an important task but emphasis will shift to use of the data, verification for applications, and data generation by pedotransfer functions. Samples from ISRIC's World Soil Reference Collection have been provided to various research groups for specialized studies, most recently:
 

  • ICRAF to evaluate the ability of mid-infrared diffuse reflectance spectroscopy (4000–602 cm−1) to predict chemical and textural properties for a globally distributed soil spectral library   more ...

  • Wageningen University and Universite Catholique de Louvain for spectral reflectance based indices for soil organic carbon quantification   more ...

  • Wageningen University for research on quantitative retrieval of soil organic carbon using laboratory spectroscopy and spectral indices, and for studies of clay-associated organic matter in kaolinitic and smectitic soils   more ...

  • The Royal Netherlands Institute for Sea Research (NIOZ), Texel, for assessment of marine influences on shore soils   more ...  

  • The World Agroforestry Centre (ICRAF), Nairobi, to calibrate newly developed spectro-analytical equipment for “finger printing” important soil properties   more ... 
     
  • The International Centre for Agricultural Research in Dry Areas, Aleppo (Syria), for assessment of pre- and post-Chernobyl soil conditions in the Middle East