We measure soil mineral composition and organic content. Soil probes are ranging from undisturbed soils to fine grain size by iteratively separating components.
We use reflectance spectroscopy in the VIS/NIR/SWIR domains of the electromagnetic spectrum.
We compare the use of Petri dishes made of Quartz glass, requiring prior calibration and characterization with a low reflecting dish. Advantages are minimization of calibration efforts with a black dish versus specular reflectance effects needing characterization.
Prof. Dr. Michael E. Schaepman
Photo: © Sanne Diek / Giulia Ghielmetti, RSL, University of Zurich