Vis-NIR Spectral data for Texture and Soil Organic Carbon prediction - La Peyne - France

The spectral resolution ranged from 3 nm (at 700 nm) to 10 nm (in the SWIR). The spectral sampling interval varies between 1.4 nm from 350 to 1000 nm and 2 nm from 1000 to 2500 nm. Data are resampled to 1 nm output values.

ASD measurements have a SNR better than 1000 at its original spectral resolution. The measurements were made using a black room to control irradiance conditions. A white Spectralon panel (12 × 12 cm labsphere, North Sutton, USA) provided the absolute reflectance factors for laboratory measurements.

Thirty individual reflectance measurements were acquired for each soil sample. Further explanations about the methodology can be found in the Peyne2009_ReadMe.txt file. SOC and texture determination Granulometry was measured using pipette method and organic carbon was determined after dry combustion minus the inorganic C. Analyses were performed by the Soil Analysis Laboratory of the INRA (Arras, France), which is accredited by the French Ministry of Agriculture.

Projects & Fundings This dataset is part of the project Digisoil-Hymed, granted by the French National research agency (ANR) (ANR-08-BLAN-0284-01) (2009 - 2012). It has been also supported by IRD and INRAE. This dataset is also part of the ALAMOD project (2024-2027), financed by the PEPR FairCarbon .