INSPIRE - CARBIOSOL - Uncertainties of Total Organic Carbon Contents - 2015-2019 period in Wallonia (BE)

This INSPIRE data layer shows the uncertainties of the Total Organic Carbon content in soils under crops and permanent grassland in Wallonia in the period 2015-2019.

This INSPIRE compliant data comes from the source data CARBIOSOL - Uncertainties of Total Organic Carbon Contents - period 2015-2019.

This data layer includes the uncertainties (here coefficient of variation - CV) of modelling for the Total Organic Carbon (TOC) contents predicted in soils under crops and meadows of the Walloon territory for the period 2015-2019. It is therefore a modeling of the prediction error.

The prediction comes from modelling the total organic carbon content of soils under crops and meadows as part of the CARBIOSOL project (UCLouvain - ULiège - DGARNE) and its production by REQUASUD for the 2015-2019 data layer.
For more details on the modeling implemented under CARBIOSOL, please refer to the metadata sheet documenting the data layer series.

For each land use, a Generalised Additive Model (GAM) has been adjusted to a calibration set containing two thirds of the observation points concerned. It was then validated on the remaining third.

Uncertainty modelling is a potential error that allows a better interpretation of the final cartographic products generated by the CARBIOSOL project. The mapping of total organic carbon contents for the period 2015-2019 should therefore be read in conjunction with the uncertainty map. Significant uncertainty reflects a less reliable prediction and therefore greater caution in the interpretation of values.

The mapping of modelling uncertainties associated with predicted TOC concentrations for the period 2015-2019 is a spatially continuous raster layer on soils under crops and grasslands with a resolution of 90 metres. The uncertainty in each pixel is expressed as a relative percentage of carbon.